WO2013011911A1 - 素子基板の製造方法 - Google Patents
素子基板の製造方法 Download PDFInfo
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- WO2013011911A1 WO2013011911A1 PCT/JP2012/067778 JP2012067778W WO2013011911A1 WO 2013011911 A1 WO2013011911 A1 WO 2013011911A1 JP 2012067778 W JP2012067778 W JP 2012067778W WO 2013011911 A1 WO2013011911 A1 WO 2013011911A1
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- wiring
- inspection
- region
- driver side
- removal
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/1262—Multistep manufacturing methods with a particular formation, treatment or coating of the substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/14—Measuring as part of the manufacturing process for electrical parameters, e.g. resistance, deep-levels, CV, diffusions by electrical means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/30—Structural arrangements specially adapted for testing or measuring during manufacture or treatment, or specially adapted for reliability measurements
- H01L22/32—Additional lead-in metallisation on a device or substrate, e.g. additional pads or pad portions, lines in the scribe line, sacrificed conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
Definitions
- the present invention relates to a method for manufacturing an element substrate.
- a liquid crystal panel used in a liquid crystal display device has a structure in which a liquid crystal layer is sandwiched between a pair of glass substrates.
- One of the glass substrates has a TFT as an active element for controlling the operation of each pixel.
- the formed array substrate is used.
- the display area of the array substrate has a structure in which a large number of gate lines and source lines are provided in a grid pattern, and TFTs are provided at intersections of the gate lines and the source lines.
- inspection wiring for inspecting disconnection or short circuit of the gate wiring and source wiring in the manufacturing process of the array substrate wiring connection for connecting the inspection wiring to each wiring And an inspection input unit connected to the inspection wiring and capable of inputting an inspection signal.
- the area of the non-display area in the array substrate can be reduced, the area of the display area can be increased correspondingly, which is useful for increasing the screen size.
- the array substrate is manufactured by taking out a plurality of pieces from a large mother glass, if the area of the non-display area in each array substrate can be reduced, the outer shape of each array substrate can be reduced. It is possible to increase the number of sheets taken out from the mother glass.
- simply reducing the area of the non-display area will reduce the layout space for the inspection wiring, wiring connection portion, and inspection input portion. There is a possibility that a problem such as disappearance may occur, and there is a limit to reducing the area of the non-display area.
- the present invention has been completed based on the above-described circumstances, and an object of the present invention is to provide a manufacturing method suitable for narrowing the outer peripheral region of the element substrate.
- a plurality of first wirings are formed on a substrate so as to straddle a first region of the substrate and a second region adjacent to the outside of the first region.
- a plurality of first inspection wirings are formed so as to straddle the second region and a third region adjacent to the outside of the first region and adjacent to the second region.
- a plurality of first wiring connection portions that connect the first wiring and the first inspection wiring are formed, a second wiring is formed across the first region and the third region, and the third region is formed in the third region.
- each wiring, each inspection wiring, and each wiring connection portion are formed on the substrate through the wiring formation process, it is inspected whether each wiring is disconnected or short-circuited through the inspection process. Then, after completing the inspection process, each wiring and each inspection wiring can be disconnected from each other by removing at least a part of each inspection wiring through the removal process.
- the plurality of first inspection wirings are formed so as to straddle the second region and the third region of the substrate, whereas the plurality of first inspection wirings are formed as the plurality of first wirings.
- the plurality of first wiring connection portions connected to the second wiring are formed separately in the second region, and the second inspection wiring connected to the second wiring and the second wiring connection portion are formed separately in the third region.
- the outer area of the second area and the third area are outside. The distance between the end and the outer end of the first region can be kept short.
- the second region and the third region can be narrowed, so that the first region can be expanded by the narrowing, and in other words, the outer shape of the substrate can be reduced. It becomes possible.
- the following configuration is preferable.
- the plurality of first inspection wirings are made of the same material and in the same layer, whereas the second inspection wiring is made of a material different from that of the first inspection wiring.
- the first inspection wiring is formed in a different layer with an insulating layer interposed. In this way, since it is possible to adopt an arrangement in which at least a part of the first inspection wiring and the second inspection wiring overlap each other, a plurality of first inspection wirings and second inspection wirings are arranged with higher density. This is more suitable for narrowing the second region and the third region.
- a plurality of the first wiring and the second wiring are made of the same material and in the same layer as the second inspection wiring, and the first wiring or the Forming an opening at a position overlapping with the first inspection wiring, and forming the first wiring connection portion connecting the first wiring and the first inspection wiring which are different layers so as to cover the opening; Yes. If it does in this way, the 1st wiring connected as a different layer and the 1st inspection wiring can be satisfactorily connected by forming the 1st wiring connection part in the form which covers the opening formed in the insulating layer. . Further, since the second wiring and the second inspection wiring are formed of the same material and in the same layer, they are well connected by the second wiring connecting portion.
- the first wiring connection portion is formed of the same material and the same layer as the pixel electrode. In this way, the first wiring connection portion can also be formed when the pixel electrode is formed, so that the manufacturing cost can be reduced.
- an ESD protection circuit connected to the plurality of first inspection wirings and the second inspection wirings is formed. In this way, the plurality of first inspection wirings and second inspection wirings can be protected from ESD (electrostatic discharge) by the ESD protection circuit.
- the ESD protection circuit As the ESD protection circuit, a plurality of the first inspection wirings are connected to the first inspection wiring and the second inspection wiring, respectively, and a threshold voltage is applied to the inspection step. Thus, a transistor that is relatively higher than the voltage value of the inspection signal input to the first inspection wiring and the second inspection wiring is formed. According to this configuration, when an inspection signal is input to one of the first inspection wiring and the second inspection wiring in the inspection process, the voltage value is relatively higher than the threshold voltage of the transistor forming the ESD protection circuit. Since it is low, it is avoided that the inspection signal flows to either one of the first inspection wiring and the second inspection wiring. Accordingly, each wiring can be normally inspected.
- the wiring formation step at least a pair of the plurality of first inspection wirings parallel to the outer end of the second region are formed, and the plurality of first wiring connection portions are formed in the second region. It is arranged between at least a pair of the first inspection wirings parallel to the outer end, and is formed in parallel along the extending direction. In this way, the distance between the outer end of the second region and the outer end of the first region can be further shortened, and the second region can be further narrowed.
- the wiring forming step at least a pair of the plurality of first inspection wirings parallel to the outer end of the second region are formed, and the plurality of first wiring connection portions are formed in the second region. At least one of the pair of the first inspection wirings parallel to the outer end is formed at a position where it is sandwiched. In this way, the plurality of first wiring connection portions can be arranged at a narrow pitch in the extending direction of at least one pair of first inspection wirings parallel to the outer end of the second region. The second region can be narrowed in the extending direction of the inspection wiring.
- the wiring is formed on the substrate so as to straddle the non-removed region of the substrate and the first removed region adjacent to the outside of the non-removed region, An inspection wiring is formed so as to straddle the first removal region and the second removal region adjacent to the outside of the non-removal region and adjacent to the first removal region, and the wiring and the wiring are formed in the first removal region.
- the inspection wiring, the wiring connection portion, and the inspection input portion are formed on the substrate through the wiring formation process, it is inspected whether the wiring is disconnected or short-circuited through the inspection process. Then, after finishing the inspection process, through the removal process, at least a part of the inspection wiring and the wiring connection part are removed, so that the wiring and the inspection wiring are disconnected, and a part of the inspection input part Remove.
- the inspection wiring is formed so as to straddle the first removal region and the second removal region in the substrate, whereas the wiring connection portion that connects the inspection wiring to the wiring is first.
- the inspection input part that can input the inspection signal by being connected to the inspection wiring is formed separately in the second removal area, so that in addition to the inspection wiring and the wiring connection part, The distance between the outer ends of the first removal region and the second removal region and the outer end of the non-removal region can be kept short as compared with the case where the inspection input parts are formed in the same region.
- the first removal region and the second removal region can be narrowed, so that the non-removal region can be expanded by the narrowing, and in other words, the outer shape of the substrate can be reduced. It becomes possible.
- the inspection input unit is expanded from the first removal region to the non-removal region, a sufficiently large area is secured as compared with the case where the inspection input unit is formed only in the first removal region. Thereby, in the inspection process, workability at the time of performing the operation of inputting the inspection signal to the inspection input unit is improved, and it is also suitable for reducing the equipment cost related to the inspection process.
- the inner peripheral side region of the substrate and a pair of outer peripheral side regions arranged so as to sandwich the inner peripheral side region from both outer sides are formed.
- each wiring and each inspection wiring are formed on the substrate through the wiring formation process, it is inspected whether each wiring is disconnected or short-circuited through the inspection process. Then, after the inspection process is completed, at least a part of each inspection wiring is removed through a removal process, whereby each wiring and each inspection wiring can be disconnected.
- the other inspection wiring connected to the other end of the other wiring is formed in the other outer peripheral area, the two inspection wirings are aggregated in one outer peripheral area.
- the connection structure between each inspection wiring and each wiring can be simplified, and the outer end of each outer peripheral region and the inner peripheral region can be The distance between the outer ends can be kept short.
- each outer peripheral region can be narrowed, so that the inner peripheral region can be expanded by that narrowing, and in other words, the outer shape of the substrate can be reduced in size.
- a substrate dividing step of taking out a plurality of substrates by dividing a substrate base material between the wiring forming step and the inspection step is performed, and in the wiring forming step, the one inspection wiring And the other inspection wiring are formed so as to straddle the substrate dividing position in the substrate dividing step.
- the line width of the inspection wiring formed on the substrate base material so as to straddle the substrate dividing position is ensured sufficiently large and the wiring resistance is lowered. Therefore, it is effective for ESD (electrostatic discharge) countermeasures.
- ESD electrostatic discharge
- a second wiring is formed in at least one of the pair of outer peripheral regions, and the second inspection wiring connected to the second wiring is divided into the substrate in the substrate dividing step.
- the inspection wiring connection portion is removed from the substrate as the substrate is divided from the substrate base material. In this way, in the stage before performing the substrate dividing step, one inspection wiring formed in a form straddling the substrate dividing position or the other inspection wiring and the second inspection wiring are connected by the inspection wiring connecting portion. Therefore, the wiring resistance of one inspection wiring connected to each other or the other inspection wiring and the second inspection wiring can be further reduced, which is effective for ESD countermeasures.
- the following configuration is preferable as an embodiment of the first to third element substrate manufacturing methods according to the present invention.
- a plurality of removal inspection input portions are formed at positions where at least a part of the substrate is not removed in the removal step, and the plurality of removal inspection input portions are connected.
- a removal inspection connection wiring arranged at a position to be removed in the removal step of the substrate is formed, and after performing the removal step, the energization state between the plurality of removal inspection input units is established.
- the removal inspection step for determining whether or not the removal step has been performed normally is performed. In this way, if the removal process is performed normally, the removal inspection connection wiring is removed, so that the plurality of removal inspection input units cannot be energized in the removal inspection process.
- the removal inspection connection wiring is not completely removed, so that a plurality of removal inspection input units can be energized in the removal inspection process.
- the substrate is chamfered over a predetermined range from the outer end.
- the second region and the third region, the first removal region and the second removal region in the substrate are compared with the case where the outer end side portion in the substrate is divided and removed in the removal step. Or, it is more suitable for narrowing the outer peripheral side region, and further, the cost of the apparatus used in the removal process can be reduced.
- a polarizing plate attaching step of attaching a polarizing plate to a surface of the substrate opposite to the wiring forming surface is performed prior to the removing step.
- each wiring can be protected from ESD (electrostatic discharge) by each inspection wiring formed on the substrate.
- FIG. 1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1 of the present invention.
- the exploded perspective view which shows schematic structure of the liquid crystal display device with which a television receiver is equipped
- Sectional drawing which shows schematically the cross-sectional structure of a liquid crystal display device
- Sectional drawing which shows the cross-sectional structure of a liquid crystal panel roughly
- the top view which shows the plane structure of the display area in the array substrate which comprises a liquid crystal panel
- a plan view schematically showing a wiring configuration in an array substrate constituting a liquid crystal panel The top view which shows the wiring structure in the edge part by the side of the source driver in an array substrate
- FIG. 1 The top view which shows the planar structure of the 1st source driver side test
- FIG. 3 The top view which shows the planar structure of the 1st source driver side test
- FIG. 4 The top view which shows the planar structure of the 1st source driver side test
- FIG. The top view which shows the planar structure of the 1st source driver side test
- FIG. The top view which shows the planar structure of the 1st source driver side test
- FIG. The top view which shows the planar structure of the 1st source driver side test
- FIG. The top view which shows the wiring structure in the corner
- the top view which shows roughly the wiring structure in the array substrate based on Embodiment 6 of this invention The top view which shows the wiring structure in the edge part by the side of the source driver in an array substrate
- the flowchart which shows the manufacturing method of the liquid crystal panel which concerns on other embodiment (1) of this invention.
- FIGS. 1 A first embodiment of the present invention will be described with reference to FIGS.
- a method for manufacturing the array substrate 20 provided in the liquid crystal panel (display panel) 11 constituting the liquid crystal display device 10 is illustrated.
- a part of each drawing shows an X axis, a Y axis, and a Z axis, and each axis direction is drawn to be a direction shown in each drawing.
- the upper side shown in FIG. 3 be a front side
- the lower side of the figure be a back side.
- the television receiver TV includes a liquid crystal display device (display device) 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the liquid crystal display device 10, a power supply P, A tuner T and a stand S are provided.
- the liquid crystal display device 10 has a horizontally long rectangular shape as a whole, and includes a liquid crystal panel 11 as a display panel and a backlight device (illumination device) 12 as an external light source, as shown in FIGS. Is integrally held by the bezel 13 or the like.
- the backlight device 12 is a so-called direct type in which a light source is disposed directly under the back surface of the liquid crystal panel 11.
- the backlight device 12 includes a chassis 14 having a light emitting portion opened on the front side (light emitting side, liquid crystal panel 11 side), a reflective sheet (reflecting member) 15 laid in the chassis 14, and light emitting from the chassis 14.
- An optical member 16 attached so as to cover the portion, a frame 17 for holding the optical member 16, a plurality of cold cathode tubes (light sources) 18 accommodated in parallel in the chassis 14, and a cold cathode
- the lamp holder 19 is configured to shield the end of the tube 18 and to have light reflectivity.
- the liquid crystal panel 11 is formed by sealing a liquid crystal layer 22 containing a liquid crystal material, which is a substance whose optical characteristics change with application of an electric field, between a pair of substrates 20 and 21.
- the liquid crystal panel 11 has a frame shape (frame shape) surrounding the display area AA on the outer periphery side of the screen, whereas the area on the center side of the screen is a display area (inner periphery side area) AA capable of displaying an image. Is a non-display area (outer peripheral area) NAA incapable of displaying an image (see FIG. 8).
- the inner area surrounded by the alternate long and short dash line indicates the display area AA.
- a pair of front and back polarizing plates 23 are respectively attached to the outer surface sides of the substrates 20 and 21.
- the one disposed on the back side (backlight device 12 side) is an array substrate (element substrate, active matrix substrate) 20 as shown in FIG.
- a substrate disposed on the front side (light emitting side) is a CF substrate (counter substrate) 21.
- Each of the array substrate 20 and the CF substrate 21 is formed by laminating various structures (thin films) described later on a transparent (translucent) glass substrate GS.
- a large mother glass from which a plurality of glass substrates GS can be taken out in consideration of production efficiency, costs related to production facilities, etc.
- Substrate base material MGS is used. Specifically, one mother glass MGS is divided to take out a total of nine glass substrates GS.
- a frame surrounded by an alternate long and short dash line indicates the outer shape of the glass substrate GS.
- three electrodes 24a to 24c are provided in the display area AA on the inner surface side (the liquid crystal layer 22 side, the surface facing the CF substrate 21, and the wiring formation surface) of the array substrate 20 (glass substrate GS).
- a large number of TFTs (Thin Film Transistors) 24 and pixel electrodes 25 which are switching elements having a gate electrode are provided side by side.
- a gate wiring 26 and a source wiring 27 forming a lattice shape are surrounded. It is arranged in this way.
- the pixel electrode 25 is made of a translucent conductive material (transparent conductive material) such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide). Both the gate wiring 26 and the source wiring 27 are made of a conductive metal material. In particular, the source wiring 27 has a two-layer structure in which different metal films 39 and 40 are laminated. Of these, the lower-layer metal film 39 is made of titanium (Ti), whereas the upper-layer metal film. 40 is made of aluminum (Al) (see FIG. 7). The gate line 26 and the source line 27 are connected to the gate electrode 24a and the source electrode 24b of the TFT 24, respectively, and the pixel electrode 25 is connected to the drain electrode 24c of the TFT 24 via the drain line 34.
- transparent conductive material such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide).
- the array substrate 20 is provided with a capacitor wiring (auxiliary capacitor wiring, storage capacitor wiring, Cs wiring) 33 that is parallel to the gate wiring 26 and overlaps the pixel electrode 25 in plan view.
- the capacitor wiring 33 is made of the same material as the gate wiring 26 and is formed in the same layer in the same process in the manufacturing process.
- the capacitor wiring 33 is arranged alternately with the gate wiring 26 in the Y-axis direction.
- the gate wiring 26 is disposed between the pixel electrodes 25 adjacent in the Y-axis direction, whereas the capacitor wiring 33 is disposed at a position that substantially crosses the central portion of each pixel electrode 25 in the Y-axis direction.
- An alignment film 28 for aligning liquid crystal molecules contained in the liquid crystal layer 22 is formed on the inner surface side of the array substrate 20 (FIG. 4).
- each colored portion 29 has a vertically long rectangular shape in plan view following the outer shape of the pixel electrode 25.
- the light-shielding part (black matrix) 30 which makes
- the light shielding portion 30 is arranged so as to overlap with the gate wiring 26, the source wiring 27, and the capacitor wiring 33 on the array substrate 20 in plan view.
- a counter electrode 31 that faces the pixel electrode 25 on the array substrate 20 side is provided on the surface of each colored portion 29 and the light shielding portion 30.
- An alignment film 32 for aligning liquid crystal molecules contained in the liquid crystal layer 22 is formed on the inner surface side of the CF substrate 21.
- the alignment films 28 and 32 formed on both the substrates 20 and 21 are both vertical alignment films for aligning the liquid crystal molecules contained in the liquid crystal layer 22 almost vertically, and the surface thereof is subjected to photo-alignment treatment.
- This is a photo-alignment film that makes it possible to impart alignment regulating force to liquid crystal molecules.
- the surface is irradiated with light in a specific wavelength region such as ultraviolet rays (UV light) from a specific angle.
- UV light ultraviolet rays
- the light irradiation directions are made different depending on the regions in the respective planes with respect to the alignment films 28 and 32, and the pair of alignment films 28 and 32 are thereby made to face each other.
- one pixel region for example, one transparent electrode 25
- one transparent electrode 25 is divided into four regions, that is, domains, in which the alignment directions of liquid crystal molecules are different from each other.
- the viewing angle characteristics are averaged, and a good display can be obtained.
- a technique described in Japanese Patent Application Laid-Open No. 2008-145700 can be applied.
- the TFT 24 that is a switching element among the structures of the array substrate 20 will be described in detail.
- the TFT 24 has a structure in which a plurality of thin films are sequentially stacked on a glass substrate GS forming the array substrate 20, and specifically, gates in order from the lower layer side (glass substrate GS side).
- a gate electrode 24a connected to the wiring 26, a gate insulating film 35, a semiconductor film 36, a doping semiconductor film 42, a source electrode 24b connected to the source wiring 27, a drain electrode 24c connected to the drain wiring 34, and an interlayer insulating film ( Passivation film) 37 and protective film 38 are laminated.
- the gate electrode 24a is made of the same material as the gate wiring 26 and is patterned immediately above the glass substrate GS in the same process as the gate wiring 26.
- the gate electrode 24a extends from the vicinity of the intersection of the gate wiring 26 extending along the X-axis direction with the source wiring 27 in the branch line extending along the Y-axis direction. It is constituted by.
- the gate insulating film 35 is made of, for example, a silicon nitride film (SiNx), and as shown in FIG. 7, the gate electrode 24a and a semiconductor film 36 described below are kept in an insulating state.
- the gate insulating film 35 has a solid pattern not only on the formation region of the TFT 24 but also on almost the entire surface of the glass substrate GS.
- the semiconductor film 36 is made of, for example, amorphous silicon (a-Si). As shown in FIG. 7, one end side is connected to the source electrode 24b and the other end side is connected to the drain electrode 24c. It has a channel region CH for conducting.
- the doping semiconductor film 42 is made of amorphous silicon (n + Si) doped with an n-type impurity such as phosphorus (P) at a high concentration. The doping semiconductor film 42 extends along the semiconductor film 36 but is removed with respect to the range of the channel region CH, and a pair of portions arranged with the channel region CH interposed therebetween are a source electrode 24b and a drain described below. It constitutes a part of the electrode 24c.
- the source electrode 24 b and the drain electrode 24 c include the same material as the source wiring 27 and the drain wiring 34 and are patterned on the glass substrate GS in the same process as the source wiring 27 and the drain wiring 34. .
- the source electrode 24b and the drain electrode 24c are arranged to face each other with a predetermined interval in the X-axis direction.
- the source electrode 24b and the drain electrode 24c are disposed on the upper layer side with respect to the gate electrode 24a via the gate insulating film 35 and the semiconductor film 36, respectively, and a part (opposing portion) of the source electrode 24b and the drain electrode 24c The overlapping portion is placed on the gate electrode 24a.
- the source electrode 24b and the drain electrode 24c have a structure in which first conductive films 24b1 and 24c1 on the lower layer side (semiconductor film 36 side) and second conductive films 24b2 and 24c2 on the upper layer side (interlayer insulating film 37 side) are stacked. Is done.
- the first conductive films 24b1 and 24c1 on the lower layer side are respectively constituted by the end portions of the doping semiconductor film 42 described above, and function as ohmic contact layers that are in ohmic contact with the semiconductor film 36 on the lower layer side. is there.
- the second conductive films 24b2 and 24c2 on the upper layer side have a two-layer structure in which different metal films are laminated, and the metal film 39 on the lower layer side is made of titanium (Ti), whereas the metal on the upper layer side is made.
- the film 40 is made of aluminum (Al). That is, the source electrode 24b and the drain electrode 24c are common to the source wiring 27 in that they have the second conductive films 24b2 and 24c2 made of two metal films 39 and 40.
- the structure differs from the source wiring 27 in that the first conductive films 24b1 and 24c1 are provided. Further, as shown in FIG. 5, the source electrode 24b extends along a branch line extending along the X-axis direction from the vicinity of the intersection with the gate wiring 26 in the source wiring 27 extending along the Y-axis direction. It is comprised by the front-end
- the interlayer insulating film 37 is made of, for example, a silicon nitride film (SiNx), and is made of the same material as the gate insulating film 35 described above.
- the protective film 38 is made of an acrylic resin (for example, polymethyl methacrylate resin (PMMA)) or a polyimide resin, which is an organic material. Therefore, the protective film 38 is thicker than the gate insulating film 35 and the interlayer insulating film 37 made of other inorganic materials and functions as a planarizing film.
- Each of the interlayer insulating film 37 and the protective film 38 has a substantially solid pattern that covers not only the region where the TFT 24 is formed but also the entire surface of the glass substrate GS.
- the interlayer insulating film 37 and the protective film 38 are interposed between the relatively lower source wiring 27 and drain wiring 34 and the relatively upper pixel electrode 25 outside the TFT 24 formation region. These are kept in an insulating state.
- the drain wiring 34 connected to the drain electrode 24c is substantially L-shaped in plan view as shown in FIG. 5, and one end side of the drain wiring 34 is connected to the drain electrode 24c. In contrast, the other end is connected to the pixel connection portion 41 connected to the pixel electrode 25. As shown in FIG. 7, the drain wiring 34 is formed on the gate insulating film 35, is made of the same material as the source wiring 27, and has the same two-layer structure. Titanium (Ti) A lower metal film 39 made of aluminum and an upper metal film 40 made of aluminum (Al).
- the drain wiring 34 is composed of only the second conductive films 24b2 and 24c2 (39, 40) of the source electrode 24b and the drain electrode 24c, as in the case of the source wiring 27, and the first conductive films 24b1, 24c1 (42). It differs from these in that it does not have.
- a gate driver (gate side driving component) GD and a source driver (source side driving component) for driving the TFT 24 are provided in the non-display area NAA on the inner surface side of the glass substrate GS constituting the array substrate 20, as shown in FIG. 8, a gate driver (gate side driving component) GD and a source driver (source side driving component) for driving the TFT 24 are provided.
- SD is connected via an anisotropic conductive film.
- the gate driver GD and the source driver SD are connected to a control board (not shown), and the TFT 24 can be driven by supplying various signals output from the control board to each wiring of the array substrate 20. Has been.
- Three source drivers SD are attached side by side along the X-axis direction with respect to one end portion (end portion on the source driver SD side) along the long side direction (X-axis direction) of the array substrate 20. Yes.
- two gate drivers GD each along the Y-axis direction with respect to a pair of end portions (end portions on the gate driver GD side) along the short side direction (Y-axis direction) of the array substrate 20. Installed side by side.
- a gate wiring 26, a source wiring 27, and a capacitor wiring 33 existing on the display area AA side are respectively extended.
- the source wiring 27 reaches the connection point of the source driver SD at the connection point of the driver GD. That is, the gate line 26, the source line 27, and the capacitor line 33 are formed so as to straddle the display area AA and the non-display area NAA.
- the extension end of the capacitor wiring 33 is arranged at a position on the inner side (display area AA side) of the non-display area NAA than the connection position of the gate driver GD, and the capacitor wiring trunk 43 formed there. Connected to.
- the capacity wiring trunks 43 are respectively arranged at both ends along the short side direction in the non-display area NAA of the array substrate 20 and along the Y-axis direction (parallel to the source wiring 27) while traversing all the capacity wirings 33. And the ends thereof reach the connection locations of the source drivers SD arranged at both ends in the X-axis direction, and are connected to the source drivers SD, respectively. Furthermore, the end on the source driver SD side in the non-display area NAA of the array substrate 20, which is on the inner side (display area AA side) than the connection location of each source driver SD, is opposed to the CF substrate 21 side. A common wiring 44 for supplying a common potential to the electrode 31 is formed.
- a plurality of common wirings 44 are arranged on the array substrate 20 so as to correspond to the positions closer to the center of each source driver SD, one end side of which is connected to each source driver SD, and the other end side of the liquid crystal layer 22. Are connected to the counter electrode 31 on the CF substrate 21 side by conductive particles (not shown) arranged so as to penetrate through. For this reason, the group of source wirings 27 connected to one source driver SD is arranged in a state where it is separated from the left and right by a common wiring 44 arranged closer to the center at the connection location of the source driver SD (FIG. 9).
- the capacitor wiring trunk 43 and the common wiring 44 are both made of the same material as the source wiring 27 and are formed in the same layer in the same process in the manufacturing process, and the lower layer side metal film 39 and the upper layer side metal film 40 are connected to each other. Prepare. As described above, various signals and the like are supplied from the gate driver GD to the gate wiring 26 and from the source driver SD to the source wiring 27, the capacitor wiring 33, and the common wiring 44, respectively.
- the gate wiring 26 is driven on both sides by connecting both ends thereof to the gate drivers GD on both sides, whereas the source wiring 27 is connected only to one end on the source driver SD. Driven on one side.
- the gate wiring 26, the source wiring 27, the capacitor wiring trunk 43 (capacitor wiring 33), and the common wiring 44 are included.
- Inspection wirings 45 and 46 for inspecting whether or not a defect such as disconnection or short circuit has occurred are formed. Since the inspection wirings 45 and 46 are used in an inspection process performed in the manufacturing process of the liquid crystal panel 11, at least one of the inspection wirings 45 and 46 is formed on the glass substrate GS in the chamfering (removal process) performed after the inspection process is finished. The part is removed.
- inspection input portions 47 and 48 that can input inspection signals from the outside to the above-described inspection wirings 45 and 46 are formed.
- the inspection wirings 45 and 46 include a plurality of source driver side inspection wirings 45 connected to the source wiring 27, the capacitor wiring trunk 43 and the common wiring 44, and a plurality of gate driver side inspection wirings 46 connected to the gate wiring 26. And are included.
- the inspection input units 47 and 48 include a source driver side inspection input unit 47 connected to the source driver side inspection wiring 45 and a gate driver side inspection input unit connected to the gate driver side inspection wiring 46. 48 is included. As shown in FIG.
- the source driver side inspection wiring 45 and the source driver side inspection input portion 47 are arranged at one end (end on the source driver SD side) along the long side direction in the non-display area NAA of the array substrate 20. It is arranged.
- the gate driver side inspection wiring 46 and the gate driver side inspection input unit 48 are provided at both ends (ends on the gate driver GD side) along the short side direction in the non-display area NAA of the array substrate 20. Each is arranged. 9 and 10, the alternate long and short dash line with a wide line width and a wide dot interval indicates the outer shape (outer end position, dividing position) of the glass substrate GS.
- the source driver side inspection wiring 45 includes a first source driver side inspection wiring 45 A connected to the source wiring 27 and a second source driver side connected to the capacitor wiring trunk 43 or the common wiring 44. Inspection wiring 45B is included.
- the source driver side inspection input section 47 is connected to the first source driver side inspection input section 47A connected to the first source driver side inspection wiring 45A and the second source driver side inspection wiring 45B. And a second source driver side inspection input unit 47B.
- a total of six first source driver side inspection wirings 45A are provided for each group of 27 source wirings connected to each source driver SD (see FIG. 8).
- a pair of first source driver side inspection wirings 45A is connected to the group of source wirings 27 connected to one source driver SD.
- Two second source driver side inspection wirings 45B correspond to the capacitor wiring trunk 43 and the common wiring 44 respectively connected to both source drivers SD arranged at both ends of the array substrate 20 in the long side direction,
- One line corresponding to the common wiring 44 connected to the source driver SD disposed in the line is provided, for a total of five lines (see FIG. 8).
- the first source driver side inspection input units 47A are provided in the same number as the first source driver side inspection wirings 45A to be connected.
- the second source driver side inspection input units 47B are connected to the second source driver side inspection wires 47A. The same number as the inspection wiring 45B is provided.
- one first source driver side inspection wiring 45 ⁇ / b> A is connected to a plurality of source wirings 27, and a plurality of first wirings provided individually for each source wiring 27. They are connected by one wiring connection portion 49.
- the second source driver side inspection wiring 45 ⁇ / b> B is connected to the capacitor wiring trunk 43 or the common wiring 44 by the second wiring connection unit 50.
- the source wiring 27 extends to the connection point of the source driver SD in the non-display area NAA and has a vertically long source terminal portion 27a connected to the source driver SD, and in addition to the source terminal 27a.
- a branch line 45Aa extends from the first source driver side inspection wiring 45A so as to overlap the extended portion 27b.
- a first wiring connection portion 49 is provided in the overlapping portion between the extension portion 27b and the branch line 45Aa.
- the source terminal portion 27a has a transparent electrode material such as ITO or IZO on the surface of the lower layer metal film 39 (titanium) of the two layers of metal films 39 and 40 constituting the source wiring 27.
- the upper metal film 40 (aluminum) is not formed. A detailed connection structure of the first wiring connection portion 49 will be described later.
- the capacitor wiring trunk 43 and the common wiring 44 extend to the connection portion of the source driver SD in the non-display area NAA and have a capacitor terminal portion (not shown) and a common terminal portion 44a connected to the source driver SD. Each has.
- the capacitor terminal portion and the common terminal portion 44a are also connected to the second source driver side inspection wiring 45B, thereby also serving as the second wiring connection portion 50.
- the capacitor terminal portion and the common terminal portion 44a are formed by applying the surface of the lower metal film 39 (titanium) of the two layers of metal films 39 and 40 constituting the capacitor wiring trunk 43 and the common wiring 44 to the pixel electrode 25.
- the metal film 40 (aluminum) on the upper layer side is not formed, and is covered with a transparent electrode material such as ITO or IZO.
- the connection structure between the capacity wiring trunk 43 and the second wiring connection portion 50 is the same as the connection structure between the common wiring 44 and the second wiring connection portion 50 shown in FIG. .
- each source driver side inspection input section 47 has a substantially square shape when viewed in plan and has a relatively larger area than the source terminal section 27a.
- the first source driver side inspection input section 47A is connected to the first source driver side inspection wiring 45A by the third wiring connection section 51.
- the first source driver side inspection input unit 47A on the right side shown in FIG. 9 to be connected is connected from the first source driver side inspection wiring 45A which is disposed relatively outside (near the outer end of the glass substrate GS).
- An extension line 45Ab extending toward the extension line 45Ab is formed, whereas an extension part 47Aa is formed from the first source driver side inspection input part 47A so as to overlap the extension line 45Ab.
- the 3rd wiring connection part 51 is provided in the overlapping part of extension line 45Ab and overlapping part 47Aa.
- the detailed connection structure of the third wiring connection portion 51 will be described later.
- the first source driver side inspection wiring 45A disposed on the relatively inner side also extends to the left first source driver side inspection input section 47A shown in FIG. While the outgoing line 45Ab is formed, an overhang part 47Aa is also formed from the first source driver side inspection input part 47A, and these are connected by the third wiring connection part 51.
- the second source driver side inspection input section 47B is connected to the second source driver side inspection wiring 45B by the fourth wiring connection section 52.
- a branch line 45Ba extends from the second source driver side inspection wiring 45B toward the second source driver side inspection input portion 47B and is directly connected to the second source driver side inspection input portion 47B.
- the branch line 45Ba constitutes the fourth wiring connecting portion 52.
- the source driver side inspection wiring 45 (first source driver side inspection wiring 45A and second source driver side inspection wiring 45B), the source driver side inspection input unit 47 (first source driver) Side inspection input section 47A and second source driver side inspection input section 47B), first wiring connection section 49, second wiring connection section 50, third wiring connection section 51, and fourth wiring connection section 52 will be described in detail.
- the non-display area NAA of the array substrate 20 one end portion along the long side direction to which each source driver SD is connected is a first area adjacent to the outside of the display area AA (see FIG. 9).
- the dividing line that divides the first area A1, the second area A2, and the third area A3 is substantially the same as the one-dot chain line indicating the outer shape of the glass substrate GS and the interval between the points.
- the source wiring 27 extends across the first area A1 and the second area A2, and the capacitor wiring trunk 43 and the common wiring 44 straddle the first area A1 and the third area A3.
- the first wiring connection portion 49 is connected to the second area A2, the second source driver side inspection wiring 45B, each source driver side inspection input section 47,
- the second wiring connection portion 50 is formed so as to be positioned in the third region A3.
- the third wiring connection portion 51 and the fourth wiring connection portion 52 are both arranged in the third region A3.
- the positional relationship between the second area A2 and the third area A3 is such that the third area A3 where a part of the common wiring 44 is arranged is located substantially at the center of each source driver SD.
- the second region A2 is arranged in a pair so as to sandwich the third region A3 on the center side from both sides in the X-axis direction, and further, the third region A3 in which a part of the capacitor wiring trunk 43 is disposed
- the two source drivers SD located at both ends of the array substrate 20 are disposed at the ends near the end of the array substrate 20.
- each source driver side inspection input unit 47 is arranged side by side along the X-axis direction at a substantially central position of the third region A3.
- the input unit 47B is arranged in the center, and a pair of first source driver side inspection input units 47A are arranged so as to sandwich the second source driver side inspection input unit 47B from both sides thereof.
- the pair of first source driver side inspection wirings 45A is parallel to each other with a predetermined interval in the Y-axis direction (the outer ends of the second region A2 and the third region A3, Although extending along the outer shape of the glass substrate GS, in the third region A3, the first source driver side inspection wiring is disposed relatively inside (the first region A1 side, the lower side shown in FIG. 9). 45A is bent so as to pass inside each source driver side inspection input unit 47 so as to bypass each source driver side inspection input unit 47 described above.
- the bent portion of the first source driver side inspection wiring 45A disposed on the relatively inner side has a shape that follows the outer shape of the three source driver side inspection input units 47 group, and the source driver side inspection input unit 47 group and The arrangement passes between the capacitor wiring trunk 43 and the common wiring 44.
- the first source driver side inspection wiring 45A disposed relatively outside is not bent in the middle of the third region A3 as well. It extends along the axial direction and is substantially linear over its entire length.
- the second source driver side inspection wiring 45B extends mostly along the X-axis direction in the third region A3, and is relatively outside the first source driver side inspection wiring in the Y-axis direction.
- the first source driver side inspection wiring 45 ⁇ / b> A on the relatively inner side is connected to the second wiring connection portion 50 while crossing the first source driver side inspection wiring 45 ⁇ / b> A.
- the first wiring connection portion 49 is arranged between the pair of first source driver side inspection wirings 45A in the Y-axis direction and also in the X-axis direction (first source line).
- a plurality of driver side inspection wirings 45A are arranged in parallel along the extending direction of the driver side inspection wiring 45A. Therefore, since the adjacent first wiring connection portions 49 are in a positional relationship that partially overlaps in the Y-axis direction, the arrangement space in the Y-axis direction is smaller than in the case of a positional relationship that does not overlap. ing.
- the width of the second region A2 having a strip shape extending along the X-axis direction that is, the distance between the outer end of the second region A2 and the outer end of the first region A1
- the second region A2 can be narrowed.
- a pair of first source driver side inspection wirings 45A arranged across a plurality of first wiring connection parts 49 arranged in parallel are alternately connected to each first wiring connection part 49 (source wiring 27). . That is, one of the first source driver side inspection wirings 45A is connected to the odd-numbered first wiring connection part 49 (source wiring 27) among the plurality of first wiring connection parts 49 (source wiring 27) arranged in parallel.
- the other first source driver side inspection wiring 45A is connected to the even-numbered first wiring connection portion 49 (source wiring 27).
- the second wiring connection portion 50 is arranged side by side along the X-axis direction so as to be adjacent to the first wiring connection portion 49 arranged closest to the third region A3.
- the 2nd wiring connection part 50 is located in the edge part by the side of 2nd area
- the first source driver side inspection wiring 45A and the second source driver side inspection wiring 45B are in a positional relationship where a part thereof overlaps in plan view as shown in FIG. And is insulated via the gate insulating film 35, so that there is no short circuit.
- the first source driver side inspection wiring 45A is made of the same material as the gate wiring 26 and is formed in the same layer in the same process in the manufacturing process
- the second source driver side inspection wiring 45B are made of the same material as the source wiring 27, the capacitor wiring trunk 43, and the common wiring 44, and are formed in the same layer in the same manufacturing process.
- the lower metal film 39 and the upper metal film 40 are connected to each other. Prepare.
- each of the three source driver side inspection input portions 47 includes the same material as the second source driver side inspection wiring 45B and the source wiring 27, and is formed in the same layer in the same process in the manufacturing process.
- each source driver side inspection input unit 47 has the same layer of ITO or the same as the pixel electrode 25 on the surface of the lower layer metal film 39 (titanium) of the two layers of metal films 39 and 40 constituting the source wiring 27. It is configured to be covered with a transparent electrode material such as IZO, and the upper metal film 40 (aluminum) is not formed.
- the first source driver side inspection wiring 45A is formed in a different layer from the source wiring 27 and the first source driver side inspection input portion 47A to be connected through the gate insulating film 35.
- the first wiring connection portion 49 and the third wiring connection portion 51 that connect the two have the following connection structure. That is, as shown in FIGS. 11 and 12, the first wiring connection portion 49 is formed so as to cover the openings 35a, 37a, and 38a formed in the gate insulating film 35, the interlayer insulating film 37, and the protective film 38.
- the branch line 45Aa of the first source driver side inspection wiring 45A exposed through the openings 35a, 37a, and 38a and the extension portion 27b of the source wiring 27 are connected.
- the first wiring connection portion 49 is made of the same material as the pixel electrode 25 formed on the protective film 38 and is formed in the same layer in the same manufacturing process.
- the first wiring connection portion 49 and the openings 35a, 37a, and 38a are arranged at positions that overlap with the overlapping portion of the branch line 45Aa of the first source driver side inspection wiring 45A and the extension portion 27b of the source wiring 27. .
- the openings 37 a and 38 a of the interlayer insulating film 37 and the protective film 38 are formed over a wider range than the openings 35 a of the gate insulating film 35.
- the extended portion 27b of the source wiring 27 is partially removed over a wider area than the opening 35a of the gate insulating film 35, and the removal range of the upper metal film 40 made of aluminum (Al) is titanium ( It is wider than the lower metal film 39 made of Ti).
- the first wiring connection portion 49 made of the same ITO as the pixel electrode 25 is in contact only with the lower metal film 39 made of titanium, and is not directly in contact with the upper metal film 40 made of aluminum. Therefore, the occurrence of galvanic corrosion can be prevented and high connection reliability can be obtained.
- the third wiring connection portion 51 also has a connection structure substantially similar to that of the first wiring connection portion 49 described above, and the extension line 45Ab of the first source driver side inspection wiring 45A through each opening 35a, 37a, 38a. Are connected to the overhanging portion 47Aa of the first source driver side inspection input portion 47A.
- the third wiring connection portion 51 three openings 35a, 37a, 38a are arranged side by side, and there are three connection locations between the extension wire 45Ab and the overhang portion 47Aa. This is different from the one-wire connecting portion 49 (see FIG. 9).
- FIGS. 11 and 12 reference numerals related to the connection structure related to the third wiring connection portion 51 are shown in parentheses.
- the capacitor wiring trunk 43 arranged in the same layer as the source wiring 27 is connected to the first wiring connecting portion 49 described above with respect to each capacitor wiring 33 arranged in the same layer as the gate wiring 26. It is connected with the same connection structure (see FIG. 10).
- the source driver side inspection input units 47 arranged in parallel along the X-axis direction are connected to each other via the ESD protection circuit 53 as shown in FIG.
- the first source driver side inspection wiring 45A connected to the inspection input unit 47A and the second source driver side inspection wiring 45B connected to the second source driver side inspection input unit 47B are mutually connected via the ESD protection circuit 53. Will be connected.
- the ESD protection circuit By connecting each source driver side inspection wiring 45 by 53, the TFT 24, the capacitor wiring trunk 43 and the common wiring 44 connected to the source wiring 27 are protected from a high voltage (surge voltage) due to ESD (electrostatic discharge). Can do.
- the ESD protection circuit 53 includes two protection circuit TFTs 53a, which are transistor elements, connected in parallel between adjacent source driver side inspection input units 47.
- the protection circuit TFT 53 a has the same structure as the TFT 24 arranged in the display area AA of the array substrate 20 and is formed in a single step in the same process as the TFT 24.
- the two protective circuit TFTs 53a connected in parallel have the same potential by connecting the gate electrode and the source electrode to the same line.
- the gate electrode and the source electrode in one protective circuit TFT 53a have the same potential as the drain electrode in the other protective circuit TFT 53a, and the gate electrode in the other protective circuit TFT 53a.
- each protection circuit TFT 53a is higher than the voltage value related to the inspection signal, but is lower than the voltage value (surge voltage value) applied when ESD occurs.
- the protection circuit TFT 53a is not driven, and thereby the adjacent source driver via the ESD protection circuit 53 It is possible to prevent a current from flowing between the side inspection input units 47.
- the protection circuit TFT 53a is driven and the adjacent source driver side inspection input via the ESD protection circuit 53 is driven.
- a current flows between the portions 47, a current flows through all of the source driver side inspection wiring 45, and thus the TFT 24, the capacitor wiring trunk 43 and the common wiring 44 connected to the source wiring 27 can be protected.
- a pair of gate driver side inspection wirings 46 are arranged at both ends along the short side direction in the non-display area (outer peripheral area) NAA of the array substrate 20, and along the X-axis direction.
- the gate wiring 26 extending in such a manner as to be sandwiched from both sides is arranged.
- a total of four gate driver side inspection wirings 46 are provided, one for each group of gate wirings 26 connected to each gate driver GD.
- the gate driver side inspection wiring 46 is arranged outside the connection portion (gate terminal portion 26 a) of the gate driver GD in the non-display area NAA and crosses each gate wiring 26.
- the gate wiring 26 has a horizontally elongated gate terminal portion 26a that extends to the connection location of each gate driver GD in the non-display area NAA and is connected to each gate driver GD.
- it has an extension 26b that extends further outward from the gate terminal portion 26a, and this extension 26b is connected to the gate driver side inspection wiring 46.
- a pair of gate terminal portions 26a are formed at both ends of each gate wiring 26 and connected to gate drivers GD attached to both sides of the array substrate 20 in the X-axis direction, thereby driving the gate wiring 26 on both sides. It is possible to do. Since the gate driver side inspection wiring 46 is made of the same material as the gate wiring 26 and is formed in the same layer in the same manufacturing process, the extension 26b of the gate wiring 26 can be directly connected. Has been.
- the pair of gate driver side inspection wirings 46 are alternately connected to a plurality of gate wirings 26 arranged in the Y-axis direction. That is, of the pair of gate driver side inspection wirings 46, one of the gate driver side inspection wirings 46 is connected to the odd-numbered gate wiring 26, while the other gate driver side inspection wiring 46 is even-numbered.
- each gate wiring 26 has gate terminal portions 26a at both ends thereof, but the extension portion 26b is formed only on one of the pair of gate terminal portions 26a.
- the extended portions 26b extend toward the opposite sides in the X-axis direction, in other words, the gate terminals where the extended portions 26b are formed.
- the portions 26a are opposite to each other.
- One gate driver side inspection input section 48 is provided for each gate driver side inspection wiring 46. As shown in FIG. 10, the gate driver side inspection input unit 48 has a substantially square shape in plan view, and has a relatively larger area than the gate terminal portion 26 a. The gate driver side inspection input section 48 is arranged at a position adjacent to the gate terminal section 26a and the extension section 26b in each gate wiring 26 in the Y-axis direction, in other words, an overlapping position in the X-axis direction. The gate driver side inspection input section 48 is arranged at a position adjacent to the gate driver side inspection wiring 46 in the X-axis direction, and an end portion on the adjacent side is connected to the gate driver side inspection wiring 46. . The gate driver side inspection input unit 48 is made of the same material as the gate wiring 26 and is formed in the same layer in the same process in the manufacturing process, and thus is directly connected to the gate driver side inspection wiring 46.
- the chamfering range (removal range) of the structure in the non-display area NAA of the array substrate 20 in the chamfering process performed in the manufacturing process of the liquid crystal panel 11 will be described.
- the non-display area NAA of the array substrate 20 is not removed over the entire area in the chamfering step, but the outer peripheral frame-shaped area (area extending from the outer end of the glass substrate GS) is removed by chamfering.
- the frame-like region on the inner peripheral side of the removal region RA is a non-removal region NRA where the region is not removed.
- the removal area RA can be somewhat varied in size due to an error during processing by a chamfering device (removal device) used in the chamfering process.
- the boundary line between the removal region RA and the non-removal region NRA is indicated by two alternate long and short dash lines (one-dot chain line whose line width is narrower than the one-dot chain line indicating the outer shape of the glass substrate GS).
- the relatively inner one-dot chain line indicates the allowable maximum range of the removal region RA
- the relatively outer one-dot chain line indicates the allowable minimum range of the removal region RA.
- the removal region RA is designed to be able to vary in a range between two one-dot chain lines shown in FIGS. 9 and 10.
- the removal area RA and the non-removal area NRA at the end on the source driver SD side in the non-display area NAA of the array substrate 20 will be described.
- the removal region RA is narrower in the Y-axis direction than the second region A2 and the third region A3 described above.
- the non-removal region NRA is Y more than the first region A1. Widened in the axial direction. That is, the non-removed region NRA includes the inner peripheral side portions in the second region A2 and the third region A3 in addition to the first region A1.
- a region overlapping with the second region A2 is referred to as a first removal region RA1
- a region overlapping with the third region A3 is referred to as a second removal region RA2.
- the boundary line between the removed region RA and the non-removed region NRA at the end on the source driver SD side forms a straight line along the X-axis direction, and the source terminal portion 27a and the first wiring connection It is located between the part 49.
- the source terminal portion 27a, the main body portion of the source wiring 27, the capacitance terminal portion, the capacitance wiring trunk 43, the common terminal portion 44a, the common wiring 44, the third wiring connection portion 51, and the ESD protection circuit 53 is arranged as a whole, while the extended portion 27b from the source wiring 27, the bent portion of the first source driver side inspection wiring 45A disposed relatively inside, the second source driver side inspection wiring 45B and each source driver side inspection input unit 47 are partially arranged.
- the first wiring connection portion 49 and the first source driver side inspection wiring 45A disposed on the relatively outer side are all disposed, while extending from the source wiring 27.
- each source driver side inspection wiring 45 is arranged across the first removal region RA1 and the second removal region RA2 in the removal region RA, whereas the first wiring connection portion 49 has the first removal region.
- each source driver side inspection input unit 47 is disposed across the non-removed region NRA and the second removed region RA2. Therefore, it can be said that the first wiring connection portion 49 and each source driver side inspection input portion 47 are separately arranged in the first removal region RA1 and the second removal region RA2, and these are aggregated in the same region.
- each source driver side inspection input unit 47 is expanded from the first removal region RA1 to the non-removal region NRA, it is sufficiently larger than the case where it is formed only in the first removal region RA1. Area is secured.
- the removal area RA and the non-removal area NRA at the end on the gate driver GD side in the non-display area NAA of the array substrate 20 will be described.
- the boundary line between the removal region RA and the non-removal region NRA forms a straight line along the Y-axis direction and is positioned between the gate terminal portion 26a and the gate driver side inspection wiring 46. ing. Therefore, while the gate terminal portion 26a, the main body portion of the gate wiring 26, the capacity wiring 33, and the capacity wiring trunk 43 are all arranged in the non-removed region NRA, an extension from the gate wiring 26 is provided. 26b and each gate driver side inspection input section 48 are partially arranged.
- the gate driver side inspection wiring 46 is entirely disposed, whereas the extension 26b from the gate wiring 26 and each gate driver side inspection input portion 48 are partially disposed. ing.
- the gate driver side inspection input unit 48 is arranged so as to straddle the removal region RA and the non-removal region NRA, a sufficiently large area is ensured as compared with the case where it is formed only in the removal region RA. ing.
- This embodiment has the structure as described above, and its operation will be described next.
- a manufacturing method of the liquid crystal display device 10 will be schematically described.
- the liquid crystal panel 11 and the backlight device 12 are separately manufactured, and the liquid crystal panel 11 and the backlight device 12 are assembled via a bezel 13 or the like.
- the manufacturing method of the liquid crystal panel 11, especially the manufacturing method of the array substrate 20, will be described in detail.
- an array substrate structure forming step (wiring forming step) for forming each structure on the mother glass MGS forming the array substrate 20 and a CF substrate 21 are formed.
- the mother glass MGS forming the array substrate 20 and the mother glass MGS forming the CF substrate 21 are pasted with the liquid crystal layer 22 interposed therebetween.
- substrate bonding process to match is performed.
- each liquid crystal panel 11 (each array substrate 20 and each CF substrate 21) is taken out, and after performing a dividing step (substrate dividing step), each wiring 26, 27 , 33, 43, and 44 are subjected to an inspection process for inspecting whether or not a disconnection or a short circuit has occurred.
- the chamfering is performed by removing the structure existing in the removal region RA in the array substrate 20 by chamfering.
- a process (removal process) is performed.
- the liquid crystal panel 11 is manufactured by performing a driver mounting process of mounting the gate driver GD and the source driver SD on the non-display area NAA of the array substrate 20. Subsequently, each step will be described in detail.
- the TFT 24, the wirings 26, 27, 33, 43, and 44, the insulating films 35, 37, and 38, and the pixels are formed on the mother glass MGS forming the array substrate 20 by a known photolithography method.
- the electrodes 25 and the like are sequentially stacked.
- the gate wiring 26 in the non-display area NAA, when forming the gate wiring 26, the first source driver side inspection wiring 45A, the gate driver side inspection wiring 46, and the gate driver side inspection input section 48 are formed. Are collectively formed (see FIGS. 9 and 10). Further, when the source wiring 26 is formed, the second source driver side inspection wiring 45B, each source driver side inspection input section 47, and the like are collectively formed (see FIG. 9).
- the array substrate structure forming process includes a wiring forming process. After the pixel electrode 25 is formed, an alignment film 28 is formed, and a photo-alignment process is performed on the alignment film 28.
- the alignment film 28 is irradiated with ultraviolet rays from a specific direction for a predetermined time.
- the array substrate structure forming step includes an alignment film forming step and a photo-alignment treatment step.
- the CF substrate structure forming step the colored portions 29, the light shielding portions 30, and the counter electrode 31 of the color filter are sequentially formed, and then the alignment film 32 is formed, and then the alignment film 32 is formed.
- a photo-alignment process is performed in the same manner as described above.
- the substrate bonding step is performed by applying a sealing agent on one mother glass MGS and dropping a liquid crystal material, and then curing the sealing agent while bonding the other mother glass MGS.
- the mother glass MGS in a bonded state is divided into a plurality of pieces by using either a laser-type cutting device that emits laser light or a mechanical-type cutting device having a grooved blade.
- a laser-type cutting device that emits laser light
- a mechanical-type cutting device having a grooved blade One (9 in FIG. 15) liquid crystal panels 11 are taken out.
- the liquid crystal panel 11 is irradiated with light from a backlight device for inspection (not shown), and the inspection input units 47 and 48 arranged in the non-display area NAA in the array substrate 20 are applied.
- the probe pins connected to the inspection device (not shown) are brought into contact with each other, and inspection signals are input from the inspection device to the inspection wirings 45 and 46 via the inspection input portions 47 and 48, respectively.
- the pair of first source driver side inspection wirings 45A are alternately connected to a plurality of parallel source wirings 27 (one skipped), in the inspection process, for example, adjacent source wirings 27 are connected. Are supplied with different inspection signals.
- the pair of gate driver side inspection wirings 46 are alternately connected to a large number of gate wirings 26 arranged in parallel, in the inspection process, for example, different inspection signals are supplied to the adjacent gate wirings 26. Yes.
- an operator visually observes an image displayed on the liquid crystal panel 11 or picks up an image with an image pickup device and performs image processing, so that a line defect, a bright spot defect, The presence or absence of various defects caused by disconnection or short circuit such as black spot defects can be inspected.
- the protection circuit TFT 53a included in the ESD protection circuit 53 that connects the adjacent source driver side inspection input units 47 is set to have a threshold voltage larger than the voltage value related to the inspection signal. Therefore, the protection circuit TFT 53a is not driven when the signal is input, thereby preventing the same inspection signal from being input to all the source driver side inspection wirings 45.
- the laminator In the polarizing plate pasting step, the laminator is attached to the outer surfaces of the pair of glass substrates GS, and then the laminator is peeled off from the polarizing plate 23. For this reason, ESD is easily generated in the polarizing plate attaching step.
- the array substrate 20 is formed with an ESD protection circuit 53 that connects adjacent source driver side inspection input units 47, and all the source driver side inspection wirings 45 are connected via the ESD protection circuit 53. Yes. Therefore, when ESD occurs in the polarizing plate attaching process, and accordingly, a high voltage exceeding the threshold voltage of the protective circuit TFT 53a is applied to any of the source driver side inspection input sections 47, it is shown in FIG.
- the protection circuit TFT 53a in the ESD protection circuit 53 is driven, and current is passed between the adjacent source driver side inspection input units 47 via the ESD protection circuit 53, so that all the source driver side A current is passed through the inspection wiring 45.
- the TFT 24, the capacitor wiring trunk 43, and the common wiring 44 connected to the source wiring 27 can be protected from a high voltage.
- the chamfering process is performed by chamfering the removal area RA of the non-display area NAA in the array substrate 20 of the liquid crystal panel 11 by a chamfering apparatus (removal apparatus) such as a grinder.
- the chamfering is performed by removing the corner of the outer end on the inner surface (wiring forming surface) side of the glass substrate GS forming the array substrate 20 by, for example, grinding with an abrasive or the like.
- Each structure that has been removed is also removed at the same time. In this chamfering process, among the structures arranged at the end on the source driver SD side in the non-display area NAA of the array substrate 20, as shown in FIG.
- the first source driver side inspection wiring 45A thus removed is removed almost over the entire area, whereas the extended portion 27b from the source wiring 27, the first source driver side inspection wiring 45A disposed relatively inside, the second The source driver side inspection wiring 45B and each source driver side inspection input unit 47 are partially removed.
- the gate driver side inspection wiring 46 extends over almost the entire area of the non-display area NAA of the array substrate 20 at the end on the gate driver GD side as shown in FIG.
- the extension 26b from the gate wiring 26 and each gate driver side inspection input section 48 are partially removed.
- the large number of source lines 27 are electrically independent from the state of being short-circuited by the first source driver side inspection lines 45A, and the large number of gate lines 26 are short-circuited by the gate driver side inspection lines 46. It is electrically independent from the state.
- the polarizing plate 23 is already attached to the outer surface of the liquid crystal panel 11. Accordingly, since the external light (particularly ultraviolet rays) is difficult to enter the liquid crystal panel 11 by the polarizing plate 23, it is possible to prevent the alignment regulation of the alignment films 28 and 32 from being changed by the external light. (See FIG. 4).
- an anisotropic conductive film is applied to the formation positions of the source terminal portions 27a, the capacitor terminal portions, and the common terminal portions 44a in the array substrate 20, and then the source driver SD is thermocompression bonded.
- the source driver SD is fixed in the attached state.
- the gate driver GD is fixed in an attached state by applying an anisotropic conductive film to the formation location of each gate terminal portion 26a in the array substrate 20 and then thermocompression bonding the gate driver GD. is doing.
- the method of manufacturing the array substrate (element substrate) 20 includes the first region A1 in the glass substrate GS and the first region A1 adjacent to the outside of the first region A1 on the glass substrate (substrate) GS.
- a plurality of source wirings (first wirings) 27 are formed so as to straddle the two regions A2, a second region A2, and a third region A3 adjacent to the outside of the first region A1 and adjacent to the second region A2.
- a plurality of first source driver side inspection wirings (first inspection wirings) 45A are formed so as to straddle the plurality of first source driver side inspection wirings 45A in the second region A2.
- a wiring connection portion 49 is formed, a capacitor wiring trunk 43 (second wiring) and a common wiring 44 (second wiring) are formed across the first region A1 and the third region A3, and the third region A3 2 Source driver side inspection wiring (second inspection wiring) 4 B, a wiring formation process for forming the second wiring connection portion 50 for connecting the capacitor wiring trunk 43 and the common wiring 44 to the second source driver side inspection wiring 45B, and a plurality of first source driver side inspection wirings 45A By inputting an inspection signal to the second source driver side inspection wiring 45B, an inspection process for inspecting the plurality of source wirings 27, the capacitor wiring trunk 43, and the common wiring 44, respectively, the second region A2 and the third region A3 In FIG.
- At least a part of the first source driver side inspection wiring 45A and the second source driver side inspection wiring 45B is removed, so that the source wiring 27 and the first source driver side inspection wiring 45A and the capacitor wiring trunk 43 are shared.
- a removal step of disconnecting the wiring 44 and the second source driver side inspection wiring 45B from each other is performed.
- the wirings 27, 43, and 44, the inspection wirings 45A and 45B, and the wiring connection portions 49 and 50 are formed on the glass substrate GS through the wiring formation process
- the wirings 27 are passed through the inspection process.
- 43, 44 are inspected for disconnection or short circuit.
- at least a part of each of the inspection wirings 45A and 45B is removed, so that the wirings 27, 43, and 44 are not connected to the inspection wirings 45A and 45B, respectively. State.
- the plurality of first source driver side inspection wirings 45A are formed so as to straddle the second region A2 and the third region A3 in the glass substrate GS, whereas the plurality of first source driver side inspection wirings 45A are formed.
- the plurality of first wiring connection portions 49 that connect the source driver side inspection wiring 45 ⁇ / b> A to the plurality of source wirings 27 are arranged in the second region A ⁇ b> 2 and the second source driver side inspection wiring connected to the capacitor wiring trunk 43 and the common wiring 44.
- 45B and the second wiring connection portion 50 are formed separately in the third region A3, so that the second source is added to the plurality of first source driver side inspection wirings 45A and the plurality of first wiring connection portions 49.
- the plurality of first source driver side inspection wirings 45A are formed of the same material and in the same layer, whereas the second source driver side inspection wirings 45B are formed of the first source driver side inspection wirings.
- the wiring 45A is made of a different material and the first source driver side inspection wiring 45A is formed in a different layer with a gate insulating film (insulating layer) 35 interposed therebetween.
- insulating layer gate insulating film
- the plurality of source wirings 27, the capacitor wiring trunks 43, and the common wirings 44 are formed of the same material and in the same layer as the second source driver side inspection wirings 45B.
- An opening 35a is formed at a position overlapping the wiring 27 or the first source driver side inspection wiring 45A, and the source wiring 27 and the first source driver side inspection wiring 45A that are different layers are connected so as to cover the opening 35a.
- a first wiring connection portion 49 is formed. In this way, by forming the first wiring connection portion 49 so as to cover the opening 35a formed in the gate insulating film 35, the source wiring 27 and the first source driver side inspection wiring 45A that are different layers are formed. Can be connected well. Further, since the capacitor wiring trunk 43 and the common wiring 44 and the second source driver side inspection wiring 45B are formed of the same material and in the same layer, they are well connected by the second wiring connection portion 50.
- the pixel electrode 25 is formed, and the first wiring connection portion 49 is made of the same material as the pixel electrode 25 and is formed in the same layer. In this way, the first wiring connection portion 49 can also be formed when the pixel electrode 25 is formed, so that the manufacturing cost can be reduced.
- the ESD protection circuit 53 connected to the plurality of first source driver side inspection wirings 45A and the second source driver side inspection wirings 45B is formed. In this way, the plurality of first source driver side inspection wirings 45A and the second source driver side inspection wirings 45B can be protected from ESD (electrostatic discharge) by the ESD protection circuit 53.
- the ESD protection circuit 53 As the ESD protection circuit 53, the plurality of first source driver side inspection wirings 45A are connected to the first source driver side inspection wiring 45A and the second source driver side inspection wiring 45B, and A protective circuit TFT (transistor) 53a whose threshold voltage is relatively higher than the voltage value of the inspection signal input to the first source driver side inspection wiring 45A and the second source driver side inspection wiring 45B in the inspection process is formed. ing. In this manner, when an inspection signal is input to either the first source driver side inspection wiring 45A or the second source driver side inspection wiring 45B in the inspection process, the voltage value forms the ESD protection circuit 53.
- the inspection signal is prevented from flowing to either one of the first source driver side inspection wiring 45A and the second source driver side inspection wiring 45B. The Therefore, the inspection of each wiring 27, 43, 44 can be performed normally.
- an ESD voltage that exceeds the threshold voltage of the protection circuit TFT 53a is applied to any of the source driver side inspection wirings 45A and 45B, another source driver side inspection wiring is provided via the protection circuit TFT 53a.
- the wiring formation step at least a pair of the plurality of first source driver side inspection wirings 45A parallel to the outer end of the second region A2 is formed, and the plurality of first wiring connection portions 49 are formed in the second region A2.
- the plurality of first wiring connection portions 49 are formed in the second region A2.
- the method for manufacturing the array substrate (element substrate) 20 of the present embodiment includes a non-removable region NRA on the glass substrate GS and a first removed region RA1 adjacent to the outside of the non-removed region NRA on the glass substrate GS.
- a source wiring (wiring) 27 is formed so as to straddle, and the source driver is formed so as to straddle the first removal region RA1 and the second removal region RA2 adjacent to the outside of the non-removal region NRA and adjacent to the first removal region RA1.
- a side inspection wiring (inspection wiring) 45 is formed, and a first wiring connection portion (wiring connection portion) 49 that connects the source wiring 27 and the source driver side inspection wiring 45 is formed in the first removal region RA1, and is not removed.
- the source wiring 27 and the source driver side inspection wiring 45 are disconnected from each other, and one of the source driver side inspection input portions 47 is connected.
- the source driver side inspection wiring 45, the first wiring connection portion 49, and the source driver side inspection input portion 47 are formed on the glass substrate GS through the wiring formation process, It is inspected whether the source wiring 27 is disconnected or short-circuited. After completing the inspection process, at least a part of the source driver side inspection wiring 45 and the first wiring connection portion 49 are removed through a removal process, whereby the source wiring 27 and the source driver side inspection wiring 45 are removed. While not connected, a part of the source driver side inspection input unit 47 is removed.
- the source driver side inspection wiring 45 is formed so as to straddle the first removal region RA1 and the second removal region RA2 in the glass substrate GS, whereas the source driver side inspection wiring 45 is formed.
- the first wiring connection portion 49 for connecting the source wiring 27 to the source wiring 27 is connected to the source driver side inspection wiring 45 in the first removal region RA1, so that the source driver side inspection input portion 47 can input the inspection signal.
- the source driver side inspection input portion 47 is collectively formed in the same region in addition to the source driver side inspection wiring 45 and the first wiring connection portion 49.
- the distance between the outer ends of the first removal region RA1 and the second removal region RA2 and the outer end of the non-removal region NRA is kept short. It can be.
- the non-removal region NRA can be expanded by the narrowing, or in other words, the glass substrate GS.
- the external shape can be reduced.
- the source driver side inspection input unit 47 is extended from the first removal region RA1 to the non-removal region NRA, the area is sufficiently large compared to the case where it is formed only in the first removal region RA1. Is secured.
- workability when performing an operation of inputting an inspection signal to the source driver side inspection input unit 47 is improved, and it is also suitable for reducing the equipment cost related to the inspection process. .
- the method of manufacturing the array substrate (element substrate) 20 according to the present embodiment is arranged on the glass substrate GS so that the display area (inner peripheral area) AA and the display area AA on the glass substrate GS are sandwiched from both outer sides.
- At least a pair of gate wirings (a pair of wirings) 26 are formed so as to straddle a pair of non-display areas (outer peripheral areas) NAA, and at least one non-display area NAA of the pair of non-display areas NAA
- One gate driver side inspection wiring (one inspection wiring) 46 connected to one end side of one gate wiring (one wiring) 26 of the pair of gate wirings 26 is formed, and the pair of non-display areas NAA is formed.
- the other gate driver connected to the other end of the other gate wiring (the other wiring) 26 of at least one of the pair of gate wirings 26 is connected to the other non-display area NAA.
- At least a pair of gate wirings by inputting a test signal to the wiring forming step for forming the bus-side inspection wiring (the other inspection wiring) 46 and the gate driver-side inspection wiring 46 and the other gate driver-side inspection wiring 46 26, and at least part of each of the gate driver side inspection wiring 46 and the other gate driver side inspection wiring 46 in the pair of non-display areas NAA is removed, so that one of the gate wiring 26 and the gate A removal step is performed in which the driver side inspection wiring 46 and the other gate wiring 26 and the other gate driver side inspection wiring 46 are disconnected from each other.
- each gate wiring 26 and each gate driver side inspection wiring 46 are formed on the glass substrate GS through the wiring formation process, whether or not a disconnection or a short circuit has occurred in each gate wiring 26 through the inspection process. Inspect. When the inspection process is completed, at least a part of each gate driver side inspection wiring 46 is removed through a removal process, so that each gate wiring 26 and each gate driver side inspection wiring 46 are disconnected. can do.
- the gate driver side inspection wiring 46 connected to one end side of one gate wiring 26 has a pair of non-display areas NAA arranged so as to sandwich the display area AA from both outsides of the glass substrate GS.
- the other gate driver side inspection wiring 46 connected to the other end side of the other gate wiring 26 is formed in the other non-display area NAA, while the other gate wiring 26 is formed in the other non-display area NAA.
- the gate driver side inspection wirings are collectively formed in one non-display area NAA, the connection structure to the gate wiring tends to be complicated, compared with each gate driver side inspection wiring 46 and each gate wiring 26.
- connection structure can be simplified and the distance between the outer edge of each non-display area NAA and the outer edge of the display area AA can be kept short. That. As a result, each non-display area NAA can be narrowed, so that the display area AA can be expanded by the narrowed area. In other words, the outer shape of the glass substrate GS can be reduced. It becomes possible.
- the glass substrate GS is chamfered over a predetermined range from the outer end.
- the second region A2, the third region A3, and the first removal in the glass substrate GS are compared with the case where the outer end side portion in the glass substrate GS is divided and removed in the removal step. This is more suitable for narrowing the area RA1 and the second removal area RA2 or the non-display area NAA, and further, the cost of the apparatus used in the removal process can be reduced.
- the polarizing plate attaching step for attaching the polarizing plate 23 to the surface of the glass substrate GS opposite to the wiring forming surface is performed prior to the removing step.
- each wiring can be protected from ESD (electrostatic discharge) by each inspection wiring formed on the glass substrate GS. it can.
- Embodiment 1 of this invention was shown, this invention is not restricted to the said embodiment, For example, the following modifications can also be included.
- members similar to those in the above embodiment are denoted by the same reference numerals as those in the above embodiment, and illustration and description thereof may be omitted.
- the first wiring connection portion 49-1 according to the present modification is relatively different from that arranged between the pair of first source driver side inspection wirings 45A-1 in the Y-axis direction. Are arranged further inside than the first source driver side inspection wiring 45A-1 arranged inside.
- the first wiring connection portion 49-1 includes a portion arranged relatively inside in the Y-axis direction and a portion arranged relatively outside, and these are relatively The positional relationship is such that the first source driver side inspection wiring 45A-1 disposed inside is sandwiched.
- the first source driver side inspection wiring 45A-1 that is relatively arranged on the outer side is a first source that is relatively arranged on the inner side of the first wiring connection portion 49-1 that is relatively arranged on the outer side.
- the driver side inspection wiring 45A-1 is connected to the first wiring connection portion 49-1 disposed relatively inside.
- the first wiring connection portion 49-1 disposed relatively on the inside and the first wiring connection portion 49-1 disposed relatively on the outside are, for example, in the X-axis direction. It can be arranged so as to partially overlap. Accordingly, the first wiring connection portions 49-1 can be arranged with a narrow pitch in the X-axis direction, and the arrangement space of the first wiring connection portions 49-1 and thus the second region A2 can be reduced in the X-axis direction. be able to.
- the first wiring connection portion 49-1 is formed at a position where either one of at least one pair of first source driver side inspection wirings 45A-1 parallel to the outer end of the second region A2 is sandwiched.
- the plurality of first wiring connection portions 49-1 are arranged at a narrow pitch in the extending direction of at least a pair of first source driver side inspection wirings 45A-1 parallel to the outer end of the second region A2. Therefore, the second region A2 can be narrowed in the extending direction of the pair of first source driver side inspection wirings 45A-1.
- the first wiring connection portion 49-2 according to the present modification is relatively different from that disposed between the pair of first source driver side inspection wirings 45A-2 in the Y-axis direction. And the first source driver side inspection wiring 45A-2 disposed outside. That is, the first wiring connection portion 49-2 disposed relatively inward in the Y-axis direction and the first wiring connection portion 49-2 disposed relatively outward are relatively outward.
- the first source driver side inspection wiring 45A-2 is disposed so as to sandwich the first source driver side inspection wiring 45A-2. According to such a configuration, the same effect as that of the first modification of the first embodiment can be obtained.
- the first wiring connection portion 49-3 according to this modification is arranged further outside the first source driver side inspection wiring 45 ⁇ / b> A- 3 that is relatively arranged outside. And the wiring arranged further inside than the first source driver side inspection wiring 45A-3 arranged relatively inside.
- the first wiring connection portion 49-3 disposed relatively inward in the Y-axis direction and the first wiring connection portion 49-3 disposed relatively outwardly include a pair of first sources.
- the driver-side inspection wiring 45A-3 is in a positional relationship in which the driver-side inspection wiring 45A-3 is sandwiched collectively from the inside and the outside in the Y-axis direction. According to such a configuration, the same effect as that of the first modification of the first embodiment can be obtained.
- the first source driver side inspection wiring 45A-4 disposed relatively outside is, as shown in FIG. It is made of the same material as -4 and formed in the same layer in the same process in the manufacturing process. Therefore, the first source driver side inspection wiring 45A-4 disposed relatively inside is similar to the above-described first embodiment with respect to the extension 27b-4 of the source wiring 27-4 formed in a different layer.
- the first source driver side inspection wiring 45A-4, which is connected to the first wiring driver 49-4 via the first wiring connection portion 49-4, is relatively connected to the source wiring 27-4 formed in the same layer. It is directly connected to the extension 27b-4.
- the extension 27b-4 of the source wiring 27-4 is extended to a position that reaches the first source driver side inspection wiring 45A-4 disposed relatively outside, thereby achieving connection. .
- the connection structure between the first source driver side inspection wiring 45A-4 and the source wiring 27-4 can be simplified.
- Modification 5 of Embodiment 1 Modification 5 of Embodiment 1 will be described with reference to FIG. Here, an arrangement in which the arrangement of the first source driver side inspection wiring 45A-5 is further changed from the first modification of the first embodiment is shown.
- the pair of first source driver side inspection wirings 45A-5 according to the present modification are arranged at positions where they overlap each other when seen in a plane.
- the first source driver side inspection wiring 45A-5 disposed relatively outside and the first source driver side inspection wiring disposed relatively inside. 45A-5 is formed in a different layer, and a gate insulating film (not shown) is interposed between them. Therefore, the first source driver side inspection wiring 45A-5 disposed on the upper layer side of the first source driver side inspection wiring 45A-5 disposed on the relatively inner side is replaced with the first source driver side inspection wiring 45A-5 disposed on the upper layer side. It is possible to obtain a positional relationship of overlapping. In this way, it is possible to reduce the arrangement space of the first source driver side inspection wiring 45A-5 in the Y-axis direction, thereby further narrowing the second region A2.
- a common wiring (second wiring) 144 is formed at the end on the gate driver GD side in the non-display area NAA.
- the common wiring 144 is arranged at a position adjacent to the group of gate wirings 126 arranged in the Y-axis direction in the Y-axis direction.
- the common wiring 144 extends mostly to the connection part of the gate driver GD while being bent outward at both ends, while most of the central side extends along the Y-axis direction. It has a common terminal part 144a connected to the driver GD.
- the common wiring 144 is made of the same material as the gate wiring 126 and is formed in the same layer in the same process in the manufacturing process.
- the gate driver side inspection wiring 146 is connected to the above-described common wiring 144 in addition to the first gate driver side inspection wiring (one inspection wiring or the other inspection wiring) 146A connected to the gate wiring 126 (wiring).
- a second gate driver side inspection wiring (second inspection wiring) 146B is provided. Both the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B are linearly extended along the Y-axis direction, and are substantially in the same position in the X-axis direction, that is, substantially the same straight line. It is an arrangement (arrangement adjacent in the Y-axis direction) arranged on the line.
- the second gate driver side inspection wiring 146B is made of the same material as the gate wiring 126 and the first gate driver side inspection wiring 146A, and is formed in the same layer in the same process in the manufacturing process.
- the second gate driver side inspection wiring 146B is directly connected to an extension portion 144b extending further outward from the common terminal portion 144a of the common wiring 144.
- the gate driver side inspection input unit 148 is connected to the second gate driver side inspection wiring 146B in addition to the first gate driver side inspection input unit 148A connected to the first gate driver side inspection wiring 146A. It has a second gate driver side inspection input section (removal inspection input section) 148B.
- the second gate driver side inspection input section 148B is made of the same material as the gate wiring 126 and the first gate driver side inspection input section 148A, and is formed in the same layer in the same process in the manufacturing process.
- a branch line 146Ba extending inward from the second gate driver side inspection wiring 146B is directly connected to the second gate driver side inspection input unit 148B. Thereby, in the inspection process, it is possible to inspect the common wiring by inputting the inspection signal to the second gate driver side inspection wiring 146B and the common wiring 144 via the second gate driver side inspection input unit 148B. .
- first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B are one point in which the line width is large and the distance between the dots is large in FIG. 21 before the glass substrate GS is divided from the mother glass MGS.
- the glass substrate GS indicated by a chain line is formed so as to straddle the dividing position (outer shape, outer end) inside and outside. That is, in the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B, the line width before dividing the glass substrate GS is larger than the line width after dividing the glass substrate GS, In FIG. 21, it is about twice.
- the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B are also present at the outer end positions of the glass substrate GS. Furthermore, in a state before dividing the glass substrate GS, the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B are connected to each other by the inspection wiring connection portion 54.
- the inspection wiring connection portion 54 is located outside the dividing position of the glass substrate GS in the mother glass MGS, and protrudes further outward than the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B. Yes. Accordingly, the entire area of the inspection wiring connection portion 54 is removed from the glass substrate GS as the glass substrate GS is divided from the mother glass MGS.
- the gate driver side inspection wiring 146 has a lower wiring resistance before dividing the glass substrate GS than wiring resistance after dividing the glass substrate GS. Therefore, even when ESD occurs in the manufacturing process and a high voltage is applied to the gate driver side inspection wiring 146, the TFT 24 and the common wiring 144 connected to the gate wiring 126 can be protected from the high voltage.
- a chamfer inspection process for inspecting whether or not the actual chamfering range (removal range) in the array substrate 120 that has undergone the chamfering process (removal process) is normal is performed.
- the boundary line between the removal region RA and the non-removal region NRA is indicated by two alternate long and short dash lines (one-dot chain line whose line width is narrower than the one-dot chain line indicating the division position of the glass substrate GS).
- the relatively inner one-dot chain line indicates the allowable maximum range of the removal region RA
- the relatively outer one-dot chain line indicates the allowable minimum range of the removal region RA.
- a removal inspection input unit 55 used in the chamfer inspection step is formed in the non-removal region NRA on the array substrate 120.
- the removal inspection input unit 55 is arranged side by side along the Y-axis direction with respect to the second gate driver side inspection input unit 148B.
- the removal inspection input unit 55 includes a first removal inspection input unit 55A adjacent to the second gate driver side inspection input unit 148B, and a second removal inspection input unit 55B adjacent to the first removal inspection input unit 55A. Consists of.
- the first removal inspection input unit 55A, the second removal inspection input unit 55B, and the second gate driver side inspection input unit 148B are arranged so that the outer end positions in the X-axis direction are substantially flush with each other, and the removal region RA.
- the first removal inspection input unit 55A and the second removal inspection input unit 55B have a substantially square shape when viewed from above, and have substantially the same area as the second gate driver side inspection input unit 148B.
- the second gate driver side inspection input unit 148B and the first removal inspection input unit 55A are connected by the first removal inspection connection wiring 56, and further, the first removal inspection input unit 55A and the second removal inspection input.
- the part 55B is connected by a second removal inspection connection wiring 57.
- the first removal inspection connection wiring 56 extends along the Y-axis direction and is connected to outer ends of the second gate driver side inspection input unit 148B and the first removal inspection input unit 55A in the X-axis direction.
- the entire area is between a one-dot chain line indicating the allowable maximum range of the removal area RA and a one-dot chain line indicating the allowable minimum range.
- the second removal inspection connection wiring 57 has a substantially annular shape that connects the outer ends of the first removal inspection input portion 55A and the second removal inspection input portion 55B in the X-axis direction, and extends along the X-axis direction.
- the pair of extending portions traverses the alternate long and short dash line indicating the allowable maximum range of the removal region RA and the alternate long and short dash line indicating the allowable minimum range, whereas the extending portion along the Y-axis direction is from the alternate long and short dashed line indicating the allowable minimum range. Is also arranged on the outside.
- the removal range in the array substrate 120 is normal, and the boundary position between the non-removal region NRA and the removal region RA is between two dash-dot lines with a narrow line width shown in FIG. If it is positioned, the second removal inspection connection wiring 57 is disconnected, but the first removal inspection connection wiring 56 is not disconnected, and the second gate driver side inspection input unit 148B and the first removal inspection input. The part 55A is kept in a connected state. Therefore, in the chamfering inspection process, the second gate driver side inspection input unit 148B and the first removal inspection input unit 55A are energized, and the first removal inspection input unit 55A and the second removal inspection input unit 55B must be energized. In this case, it is determined that the chamfering process has been normally performed.
- the removal range in the array substrate 120 is excessive (excessive) in the chamfering process
- the two-dot chain lines having the narrow line width shown in FIG. Therefore, the first removal inspection connection wiring 56 and the second removal inspection connection wiring 57 are both disconnected. Therefore, in the chamfering inspection process, the second gate driver side inspection input unit 148B and the first removal inspection input unit 55A are not energized, and the first removal inspection input unit 55A and the second removal inspection input unit 55B are energized. Otherwise, it is determined that the removal range in the chamfering process is excessive.
- the boundary position between the non-removal region NRA and the removal region RA is two lines having a narrow line width shown in FIG. Since the first removal inspection connection wiring 56 and the second removal inspection connection wiring 57 are not disconnected together, the second gate driver side inspection input unit 148B is connected to the second gate driver side inspection input unit 148B. While the first removal inspection input unit 55A is kept in a connected state, the first removal inspection input unit 55A and the second removal inspection input unit 55B are kept in a connected state.
- the second gate driver side inspection input unit 148B and the first removal inspection input unit 55A are energized, and the first removal inspection input unit 55A and the second removal inspection input unit 55B are energized. For example, it is determined that the removal range in the chamfering process is too small.
- the substrate dividing step of taking out a plurality of glass substrates GS by dividing the mother glass (substrate base material) MGS between the wiring forming step and the inspection step is performed.
- the wiring formation process at least one of the one gate driver side inspection wiring 146 and the other gate driver side inspection wiring 146 is formed across the division position of the glass substrate GS in the substrate division process. .
- the line width of the gate driver side inspection wiring 146 formed so as to straddle the dividing position of the glass substrate GS in the mother glass MGS is ensured sufficiently large. Since the wiring resistance is low, it is effective for ESD (electrostatic discharge) countermeasures.
- the gate driver side inspection wiring 146 exists up to the outer end position of the non-display area NAA, so that the line width of the gate driver side inspection wiring 146 is ensured to be large. This is effective for ESD countermeasures.
- the common wiring 144 is formed in at least one of the pair of non-display areas NAA, and the second gate driver side inspection wiring 146B connected to the common wiring 144 is formed on the glass substrate GS in the substrate dividing process.
- the inspection wiring connecting portion 54 formed so as to straddle the dividing position and connected to the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B is outside the division position of the glass substrate GS in the substrate dividing step.
- the inspection wiring connection portion 54 is removed from the glass substrate GS as the glass substrate GS is divided from the mother glass MGS.
- the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B formed across the dividing position of the glass substrate GS are inspected wiring. Since they are connected by the connecting portion 54, the wiring resistance in the first gate driver side inspection wiring 146A and the second gate driver side inspection wiring 146B connected to each other can be further reduced, which is effective for ESD countermeasures. is there.
- a plurality of removal inspection input units 55 arranged at positions where at least a part of the glass substrate GS is not removed in the removal step are formed, and the plurality of removal inspection input units 55 are connected.
- the removal inspection connection wiring 57 arranged at the position to be removed in the removal process in the glass substrate GS is formed, and after the removal process is performed, based on the energization state between the plurality of removal inspection input portions 55. Then, a removal inspection step is performed to determine whether or not the removal step has been performed normally. In this way, if the removal process is performed normally, the removal inspection connection wiring 57 has been removed, so that the plurality of removal inspection input portions 55 cannot be energized in the removal inspection process.
- the removal inspection connection wiring 57 is not completely removed, and therefore, the plurality of removal inspection input portions 55 can be energized in the removal inspection process. By going through such a removal inspection process, it is possible to reduce defective products.
- the redundant wiring 58 is formed at the end on the source driver SD side in the non-display area NAA of the array substrate 220, and the second source driver side inspection wiring 245B for inspecting the redundant wiring 58 is formed. Indicates what was done.
- the redundant wiring 58 is arranged at a position adjacent to the common wiring 244 and is arranged so as to be substantially parallel to the common wiring 244.
- a redundant terminal portion 58a connected to the source driver SD is formed at one end of the redundant wiring 58, and the redundant terminal portion 58a is disposed adjacent to the common terminal portion 244a.
- the redundant wiring 58 is made of the same material as the common wiring 244 and the source wiring 227 and is formed in the same layer in the same process in the manufacturing process.
- the other end of the redundant wiring 58 extends along the X-axis direction across the parallel group of source wirings 227 and is formed on the same layer as the gate wiring 26.
- a signal is supplied to the disconnected source wiring 227 via the redundant wiring 58 by short-circuiting the overlapping portion of the wiring and the disconnected source wiring 227.
- the second source driver side inspection wiring 245B and the second source driver side inspection input unit 247B are each provided with one connected to the redundant wiring 58 in addition to the one connected to the common wiring 244. Yes.
- the second source driver side inspection wiring 245B connected to the redundant wiring 58 is L-shaped as a whole, and extends outward along the Y-axis direction from the redundant terminal portion 58a and then extends along the X-axis direction. It is a form that extends.
- the second source driver side inspection input unit 247B connected to the redundant wiring 58 is connected to the first source driver side inspection input unit 247A connected to the first source driver side inspection wiring 245A relatively inside and the redundant terminal. It arrange
- each source driver side inspection input unit 247 is provided. That is, the number of each source driver side inspection wiring 245 and each source driver side inspection input unit 247 installed per source driver SD is twice that of the first embodiment.
- the third area A3 in the non-display area NAA four first source driver side inspection input units 247A and four second source driver side inspection input units 247B are arranged along the X-axis direction. It is arranged. Note that a total of eight source driver side test input units 247 arranged in parallel are connected to each other by an ESD protection circuit 253. Further, the four first source driver side inspection wirings 245A and the second source driver side inspection wirings 245B are arranged so as to be symmetric in the left and right directions in FIG. It is arranged so as to straddle the area A3.
- three first source driver side inspection wirings 345A are provided for the group of source wirings 327.
- the three first source driver side inspection wirings 345A include those arranged on the outermost side in the second region A2 in the Y-axis direction, those arranged on the innermost side, and those arranged on the central side. include.
- These three first source driver side inspection wirings 345A are alternately and repeatedly connected to the respective source wirings 327 included in the group of source wirings 327. Specifically, in the group of source wirings 327, the outermost first source driver side inspection wiring 345 ⁇ / b> A is counted as the first source wiring 327 counted from the left side shown in FIG. 23, and the second source wiring 327 is centered.
- the third source wiring 327 has the innermost first source driver side inspection wiring 345A
- the fourth source wiring 327 has the outermost first source driver side.
- the inspection wiring 345A is connected in the following order. That is, when “n” is a natural number, the outermost first source driver side inspection wiring 345A has the (3n ⁇ 2) th source wiring 327 and the central first source driver side inspection wiring 345A. It can be said that the (3n-1) th source wiring 327 is connected to the innermost first source driver side inspection wiring 345A, and the 3nth source wiring 327 is connected thereto.
- each source wiring 327 is connected to each TFT 24 connected to the pixel electrode 25 facing the colored portion 29 of the three colors R, G, and B of the color filter on the CF substrate 21 side (see FIG. 4), and is divided into a source wiring 327R for the R pixel, a source wiring 327G for the G pixel, and a source wiring 327B for the B pixel.
- the three first source driver side inspection wirings 345A are connected to the source wiring 327R for the R pixel, the source wiring 327G for the G pixel, and the source wiring 327B for the B pixel for each type. Has been.
- the outermost first source driver side inspection wiring 345A is a plurality of R pixel source wirings 327R
- the central first source driver side inspection wiring 345A is a plurality of G pixel source wirings 327G.
- the innermost first source driver side inspection wiring 345A is connected to a plurality of source wirings 327B for B pixels. Therefore, in the inspection process, by inputting inspection signals individually to the three first source driver side inspection wirings 345A, it is possible to perform inspection by displaying a monochrome image on the liquid crystal panel 11.
- an inspection signal for white display (for example, the maximum gradation value) is input to the outermost first source driver side inspection wiring 345A, and black is displayed on the other first source driver side inspection wiring 345A. If an inspection signal (for example, the minimum value of the gradation value) is input, a red single color image is displayed on the liquid crystal panel 11. Further, if a white display inspection signal is input to the first source driver side inspection wiring 345A on the center side and a black display inspection signal is input to the other first source driver side inspection wiring 345A, the liquid crystal panel 11 is supplied. Displays a green single-color image.
- the liquid crystal panel 11 is supplied. Will display a blue single-color image.
- the first wiring connection portion 349 that connects the outermost first source driver side inspection wiring 345A and the source wiring 327 is disposed further outward in the Y-axis direction than the outermost first source driver side inspection wiring 345A. Yes.
- the wiring connection portion 349 is arranged between the first source driver side inspection wiring 345A on the center side and the innermost first source driver side inspection wiring 345A in the Y-axis direction and aligned along the X-axis direction. In this case, the positional relationship is overlapped in the Y-axis direction.
- Embodiment 4 of this invention was shown, this invention is not restricted to the said embodiment, For example, the following modifications can also be included.
- members similar to those in the above embodiment are denoted by the same reference numerals as those in the above embodiment, and illustration and description thereof may be omitted.
- Modification 1 of Embodiment 4 will be described with reference to FIG. Here, the arrangement of the first wiring connection portion 349-1 is changed.
- the first wiring connection portion 349-1 is disposed between the adjacent first source driver side inspection wirings 345A-1.
- the outermost first source driver side inspection wiring 345A-1 and the source wiring 327-1 are connected to each other, and the center side first source driver side inspection wiring 345A- 1 and the first wiring connection part 349-1 connecting the source wiring 327-1 are both the outermost first source driver side inspection wiring 345 ⁇ / b> A- 1 and the center side first source driver side inspection. It is arranged between the wiring 345A-1 and arranged side by side along the X-axis direction, and has a positional relationship overlapping in the Y-axis direction.
- the first wiring connection portion 349-1 that connects the innermost first source driver side inspection wiring 345 ⁇ / b> A- 1 and the source wiring 327-1 is the first source driver side inspection wiring 345 ⁇ / b> A on the center side in the Y-axis direction. -1 and the innermost first source driver side inspection wiring 345A-1.
- the first wiring connection portion 349-2 is arranged so as not to overlap in the Y-axis direction, as shown in FIG. Specifically, the outermost first source driver side inspection wiring 345A- connects the outermost first source driver side inspection wiring 345A-2 and the source wiring 327-2 with the outermost first source driver side inspection wiring 345A-. It is arranged further outside in the Y-axis direction than 2.
- the first wiring connection portion 349-2 that connects the first source driver side inspection wiring 345A-2 and the source wiring 327-2 on the center side is the outermost first source driver side inspection wiring 345A-2 in the Y-axis direction. And the first source driver side inspection wiring 345A-2 on the center side.
- the first wiring connection portion 349-2 that connects the innermost first source driver side inspection wiring 345A-2 and the source wiring 327-2 is the first source driver side inspection wiring 345A-2 at the center in the Y-axis direction. And the innermost first source driver side inspection wiring 345A-2.
- the outermost first source driver side inspection wiring 345A-3 is the same as the source wiring 327-3, as shown in FIG. It is made of a material and formed in the same layer in the same process in the manufacturing process. Accordingly, the other two first source driver side inspection wirings 345A-3 are connected to the extension 327b-3 of the source wiring 327-3 formed in different layers via the first wiring connection part 349-3. Although connected to each other, the outermost first source driver side inspection wiring 345A-3 is directly connected to the extension 327b-3 of the source wiring 327-3 formed in the same layer.
- the extension 327b-3 of the source wiring 327-3 is extended to a position that reaches the outermost first source driver side inspection wiring 345A-3, thereby achieving connection. In this way, the connection structure between the first source driver side inspection wiring 345A-3 and the source wiring 327-3 can be simplified.
- a first wiring connection portion 349-4 that connects the first source driver side inspection wiring 345A-4 and the source wiring 327-4 on the center side, and the innermost first source driver side inspection wiring 345A- 4 and the first wiring connection portion 349-4 that connects the source wiring 327-4, the first source driver side inspection wiring 345A-4 on the center side in the Y-axis direction and the innermost first source driver side inspection It is arranged between the wirings 345A-4 and arranged side by side along the X-axis direction so that they overlap with each other in the Y-axis direction.
- Embodiment 5 of the present invention will be described with reference to FIG.
- the power supply wiring 59, the clock wiring 60, and the ground wiring 61 are provided in the non-display area NAA of the array substrate 420.
- a power source potential, a clock signal, and a ground potential are transmitted from the source driver SD to the gate driver GD, respectively.
- a power supply wiring 59, a clock wiring 60, and a ground wiring 61 are formed.
- the power supply wiring 59, the clock wiring 60, and the ground wiring 61 each have an L shape as a whole, and are formed so as to extend from the connection location of the source driver SD to the connection location of the gate driver GD.
- the gate driver side power supply terminal portion 59a, the gate driver side clock terminal portion 60a, and the gate driver side ground terminal portion 61a are provided at the end on the gate driver GD side.
- a source driver side power supply terminal portion 59b, a source driver side clock terminal portion 60b, and a source driver side ground terminal portion 61b are respectively formed at the end portion on the driver SD side.
- the power supply wiring 59, the clock wiring 60, and the ground wiring 61 are all made of the same material as the source wiring 427, and are formed in the same layer in the same process in the manufacturing process. In FIG. 28, two power supply wirings 59, two clock wirings 60, and one ground wiring 61 are shown.
- inspection wirings 62 to 64 for inspecting whether the power supply wiring 59, the clock wiring 60, and the ground wiring 61 are disconnected or short-circuited are formed at the corners of the non-display area NAA of the array substrate 420.
- the inspection wirings 62 to 64 are made of the same material as the source wiring 427 and formed in the same layer in the same manufacturing process, and the same material as the pixel electrode 25 and in the manufacturing process. Second type inspection wirings 63 and 64 formed in the same layer in the same process are included.
- an inspection input section 65 that is connected to the above-described inspection wirings 62 to 64 and can input an inspection signal is formed.
- Test input units 65 are arranged along the Y-axis direction with respect to the gate driver side test input unit 448. All of the three inspection input portions 65 are made of the same material as the source wiring 427 and are formed in the same layer in the same process in the manufacturing process.
- the first type inspection wiring 62 includes the uppermost gate driver side power supply terminal portion 59a in FIG. 28 among the five gate driver side terminal portions 59a to 61a and the center of the three inspection input portions 65. Of the five gate driver side terminal portions 59a to 61a, the second gate driver side power supply terminal portion 59a from the top and the uppermost of the three inspection input portions 65 are connected. A gate driver side clock terminal portion 60a located third from the top among the five gate driver side terminal portions 59a to 61a and five gate driver side terminal portions 59a to 61a to be connected to the inspection input unit 65 And the gate driver side ground terminal portion 61a located fifth from the top are included. Since each first type inspection wiring 62 is formed in the same layer as each gate driver side terminal portion 59a to 61a and each inspection input portion 65, it is directly connected thereto.
- the second type inspection wiring 63 arranged on the connection side of the gate driver GD is the top of FIG. 28 among the five gate driver side terminal portions 59a to 61a.
- the gate driver side clock terminal unit 60 a positioned fourth is connected to the lowermost test input unit 65 of the three test input units 65.
- the second type inspection wiring 63 is formed in a layer different from the gate driver side clock terminal unit 60a, the inspection input unit 65, and the first type inspection wiring 62 (upper layer sandwiching the interlayer insulating film 37 and the protective film 38). Therefore, the gate driver side clock terminal portion 60a and the inspection input portion 65 are contacted through an opening (not shown) formed in the interlayer insulating film 37 and the protective film 38, and the first type inspection is performed.
- the wiring 62 is partially overlapped in plan view.
- the second type inspection wiring 64 disposed on the connection location side of the source driver SD is the most common among the five source driver side terminal portions 59b to 61b in FIG. Connecting the left source driver side power terminal 59b and the third source driver side clock terminal 60b from the left, connecting the second source driver side power terminal 59b from the left, and from the left And a source driver side clock terminal portion 60b positioned fourth. From the source driver side power supply terminal portion 59b and the source driver side clock terminal portion 60b, an extension portion extending toward the connection portion with the second type inspection wiring 64 is formed.
- the second type inspection wiring 64 is a layer different from the source driver side power supply terminal portion 59b, the source driver side clock terminal portion 60b, and the first source driver side inspection wiring 445A (an upper layer sandwiching the interlayer insulating film 37 and the protective film 38). Therefore, the source driver side power supply terminal portion 59b and the source driver side clock terminal portion 60b are contacted through openings (not shown) formed in the interlayer insulating film 37 and the protective film 38. In addition, the first source driver side inspection wiring 445A is partially overlapped in plan view.
- the source driver side ground terminal portion 61b located on the rightmost side in FIG. 28 has an extension portion extending outward, and this extension portion is It is connected to the first source driver side inspection wiring 445A. Therefore, the ground wiring 61 is connected to the first source driver side inspection input unit 447A via the first source driver side inspection wiring 445A.
- the inspection step for example, it is determined whether or not energization is performed between the central inspection input unit 65 in FIG. 28 among the three inspection input units 65 and the first source driver side inspection input unit 447 to which the ground wiring 61 is connected. inspect. If no current is supplied at this time, any one of the uppermost (left) power supply wiring 59, the clock wiring 60 located third from the upper (left), and the lowermost (right) ground wiring 61 in FIG. If it is energized, it is found that no breakage has occurred in these wirings 59-61. Further, in the inspection process, it is inspected whether or not electricity is passed between the uppermost inspection input unit 65 and the lowermost inspection input unit 65 in FIG.
- the gate driver GD described in the first embodiment is not attached to the array substrate 520 according to the present embodiment, and a gate driving unit 62 is provided instead.
- the gate driving unit 62 is directly formed on the glass substrate GS that forms the array substrate 520, and is formed collectively when the TFTs 24 to be formed in the display area AA are formed in the manufacturing process.
- Wirings 63 to 66 for supplying various signals from the source driver SD to the gate driving unit 62 are formed at corners of the non-display area NAA of the array substrate 520.
- the wirings 63 to 66 include an STV wiring 63 that supplies a start signal to the gate driving unit 62, a CKV wiring 64 that supplies a first clock signal, and a CKVB wiring 65 that supplies a second clock signal. And a VSS wiring 66 for supplying a ground potential.
- Each of the wirings 63 to 66 has one end connected to the gate drive unit 62, while the other end is connected to the inspection input unit 67 as shown in FIG.
- Each inspection input portion 67 has an extension wiring 68 formed therein, and an end thereof is connected to an extension terminal portion 68a parallel to the source terminal portion 527a and the common terminal portion 544a along the X-axis direction. Has been.
- the extension terminal portion 68a is connected to the source driver SD so that a signal from the source driver SD is transmitted to the wirings 63 to 66.
- the inspection input units 67 arranged in parallel along the X-axis direction are connected to each other by an ESD protection circuit 553.
- the wirings 63 to 66, the inspection input units 67, the extended wirings 68, and the extended terminal portions 68a described above are arranged in the X-axis direction with the arrangement region of the source driver side inspection input units 547, and It is arranged between the arrangement area of the one wiring connection portion 549.
- a seventh embodiment of the present invention will be described with reference to FIG.
- the seventh embodiment should be referred to as a modification of the first embodiment described above, and shows a configuration in which the number of source drivers SD and the arrangement of the common wiring 644 are changed.
- six source drivers SD are attached side by side along the X-axis direction to one end portion along the long side direction of the array substrate 620.
- the common wiring 644 is arranged on the array substrate 620 in association with a position near the end of each source driver SD, and one end thereof is connected to each source driver SD.
- the common wiring 644 is connected to the pair of source drivers SD arranged at both ends in the long side direction of the array substrate 620 and an end portion to which the common wiring trunk 643 is connected.
- the group of source wirings 627 connected to one source driver SD is sandwiched between the common wiring trunk 643 and the common wiring 644 arranged on the end side of the source driver SD in the non-display area NAA.
- a region or a region sandwiched between both common wirings 644 is arranged. Also in the array substrate 620 as described above, it is possible to adopt the same wiring configuration as in the first embodiment.
- the source wiring 727 is composed of metal films of different layers in the display area AA and the non-display area NAA.
- the portion of the source wiring 727 according to the present embodiment that is disposed in the display area AA is disposed on the upper layer side of the gate insulating film 35 and the lower-layer side metal made of titanium (Ti).
- the display area side wiring section 69 has a two-layer structure of a film 39 and an upper metal film 40 made of aluminum (Al) (see FIGS. 5 and 7).
- the portion of the source wiring 727 that is disposed in the non-display area NAA is disposed on the lower layer side of the gate insulating film 35 and is non-display made of the same material as the gate electrode 24a (see FIGS. 5 and 7).
- the region-side wiring unit 70 is used.
- the one-dot chain line extending along the X-axis direction shown at the bottom in FIG. 32 represents the boundary line between the display area AA and the non-display area NAA.
- the display area side wiring part 69 has an end extending to the non-display area NAA, and is arranged so as to overlap the end of the non-display area side wiring part 70 in a plan view.
- a source wiring connection portion 71 that connects the display region side wiring portion 69 and the non-display region side wiring portion 70 disposed in different layers via the gate insulating film 35 is formed in this overlapping portion.
- the specific connection structure of the source wiring connection portion 71 is the same as the connection structure of the first wiring connection portion 49 and the third wiring connection portion 51 described in the first embodiment (see FIGS. 11 and 12). , I will omit the duplicate explanation.
- the source terminal portion 727a and the extension portion 727b included in the source wiring 727 are made of the same material as the above-described non-display area side wiring portion 70 and are arranged in the same layer.
- the source terminal portion 727a is configured such that the surface of the metal film constituting the gate electrode 24a is covered with the same transparent electrode material as ITO or IZO as the pixel electrode 25.
- the first source driver side inspection wiring 745A connected to the extension 727b which is the non-display area side wiring section 70 of the source wiring 727 is made of the same material as the display area side wiring section 69 of the source wiring 727, and A two-layer structure of the metal film 39 and the upper metal film 40 is formed.
- the first wiring connection portion 749 that connects the extension 727b of the source wiring 727 and the first source driver side inspection wiring 745A is the same as that described in the first embodiment (see FIGS. 11 and 12). This is the structure of and will not be described redundantly.
- the common wiring 744 is made of the same material as that of the gate electrode 24a, and the common terminal portion 744a (second wiring connection portion 750) has the same surface as the pixel electrode 25 made of ITO or the like as the pixel electrode 25.
- the structure is covered with a transparent electrode material such as IZO.
- the second source driver side inspection wiring 745B connected to the common wiring 744 is made of the same material as the gate electrode 24a and the common wiring 744.
- the first source driver side inspection input unit 747A and the second source driver side inspection input unit 747B are both made of the same material as the gate electrode 24a, and the surface thereof is covered with the same transparent electrode material such as ITO or IZO as the pixel electrode 25. It is supposed to be configured. Further, the third wiring connection portion 751 for connecting the first source driver side inspection wiring 745A and the first source driver side inspection input portion 747A is the same as that described in the first embodiment (see FIGS. 11 and 12). It is the same structure, and the overlapping description is omitted.
- the present invention is not limited to the embodiments described with reference to the above description and drawings.
- the following embodiments are also included in the technical scope of the present invention.
- the method for manufacturing the liquid crystal panel (array substrate) can be changed as appropriate. For example, as shown in FIG. 33, the inspection process using each inspection wiring and each inspection input unit is performed twice, the first first inspection process is performed after the dividing process is completed, and the second second process is performed. You may make it perform an inspection process after finishing a polarizing plate sticking process.
- each inspection wiring or the like may be removed by dividing the glass substrate instead of the chamfering step. Specifically, as shown in FIG. 34, after completing the substrate bonding process, a primary dividing process of dividing each liquid crystal panel from the mother glass is performed, and after the polarizing plate bonding process, each inspection wiring is removed. In order to do this, a secondary cutting step (removal step) for cutting the end portion of the glass substrate may be performed.
- the first wiring connection portion that connects the source driver side inspection wiring and the source wiring is arranged at a position shifted from the source driver side inspection wiring in the Y-axis direction.
- the first source driver side inspection wiring straddles the second region and the third region, the first wiring connection portion is in the second region, the second source driver side inspection wiring, and Although the second wiring connection portion is formed in the third region, these arrangements can be applied to the gate driver side inspection wiring and the wiring connection portion.
- one gate driver side inspection wiring is connected to one end side of one gate wiring, and the other gate driver side inspection wiring is connected to the other end side of the other gate wiring.
- the source driver side inspection wiring and the source wiring it is also possible to apply these arrangement configurations to the source driver side inspection wiring and the source wiring.
- the source driver is attached only to one end of the array substrate, and the source wiring is driven on one side by the source driver. It is also possible to adopt a configuration in which the source wiring is driven on both sides by being attached to both ends.
- the gate driver is attached to both ends of the array substrate and the gate wiring is driven on both sides by the gate driver. It is also possible to attach to only one end and drive the gate wiring on one side.
- each gate driver side inspection wiring is formed so as to straddle the dividing position of the glass substrate, but this structure is also applied to each source driver side inspection wiring.
- Each source driver side inspection wiring can be configured to be formed so as to straddle the dividing position of the glass substrate. Furthermore, it is also possible to adopt a configuration in which the adjacent source driver side inspection wirings are connected by the inspection wiring connection portion.
- the removal inspection input portion and the removal inspection connection wiring are formed at the end on the gate driver side of the array substrate, but are removed at the end of the array substrate on the source driver side. You may make it form a test
- the first wiring connection portion and the third wiring connection portion for connecting different layers are made of the same material and the same layer as the pixel electrode. However, it may be formed in a different layer using a conductive material different from that of the pixel electrode.
- the specific configuration of the ESD protection circuit can be appropriately changed.
- a varistor element may be used.
- the reference potential is supplied from the source driver to the capacitor wiring via the capacitor wiring trunk.
- the capacitor connection wiring connected to the gate driver is formed on the array substrate.
- the reference potential may be supplied from the source driver to the capacitor wiring via the capacitor connection wiring and the gate driver.
- the substrate bonding process is performed and then the inspection process using each inspection wiring and each inspection input unit is performed. It is possible to perform the inspection process after performing the process, and then perform the substrate bonding process.
- the direct type is exemplified as the backlight device included in the liquid crystal display device, but the present invention includes a backlight device of an edge light type.
- a transmissive liquid crystal display device including a backlight device that is an external light source has been exemplified.
- the present invention provides a reflective liquid crystal display device that performs display using external light.
- the backlight device can be omitted.
- a TFT is used as a switching element of a liquid crystal display device.
- the present invention can also be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)).
- a switching element other than TFT for example, a thin film diode (TFD)
- the present invention can also be applied to a liquid crystal display device for monochrome display.
- a liquid crystal display device using a liquid crystal panel as an example of the display panel has been exemplified.
- the present invention is applicable to a display device using another type of display panel (PDP, organic EL panel, etc.). Applicable. In that case, the backlight device can be omitted.
- the source driver side inspection wirings straddle a plurality of source driver arrangement regions. It is also possible to adopt a configuration arranged in the range. For example, two source driver side inspection wirings are arranged in a range extending over all the source driver arrangement areas, one of the source driver side inspection wirings is an odd-numbered source wiring, and the other source driver side inspection wiring is an even number. It is possible to connect to the second source wiring. Note that when adopting the above-described configuration, the total number of source driver side inspection wirings formed on the array substrate can be appropriately changed in addition to two. For example, the number of source drivers installed is less than twice the number of installed source drivers. It can be.
- second wiring connection part (wiring connection part), 53 ... ESD protection circuit, 53a ... TFT for protection circuit (transience ), 54... Inspection wiring connection section, 55... Removal inspection input section, 56... First removal inspection connection wiring (removal inspection connection wiring), 57.
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Abstract
Description
ところで、アレイ基板における非表示領域の面積を小さくできれば、その分表示領域の面積を大きくすることができるので、大画面化を図る上で有用となる。また、アレイ基板は、大型のマザーガラスから複数枚取り出されて製造されるものであることから、各アレイ基板における非表示領域の面積を小さくできれば、個々のアレイ基板の外形を小さくでき、それによりマザーガラスからの取り出し枚数を増やすことが可能となる。しかしながら、単に非表示領域の面積を小さくすれば、検査配線、配線接続部及び検査入力部の配置スペースが減少することになるため、検査配線の線幅や検査入力部の面積を十分に確保できなくなるなどの問題が生じる可能性があり、非表示領域の面積を小さくするにも限界があった。
本発明に係る第1の素子基板の製造方法は、基板上に、前記基板における第1領域と、前記第1領域の外側に隣り合う第2領域とに跨る形で複数の第1配線を形成し、前記第2領域と、前記第1領域の外側に隣り合い且つ前記第2領域に隣り合う第3領域とに跨る形で複数の第1検査配線を形成し、前記第2領域に、前記第1配線と前記第1検査配線とを接続する複数の第1配線接続部を形成し、前記第1領域と前記第3領域とに跨る形で第2配線を形成し、前記第3領域に第2検査配線、及び前記第2配線と前記第2検査配線とを接続する第2配線接続部をそれぞれ形成する、配線形成工程と、複数の前記第1検査配線と前記第2検査配線とに検査信号を入力することで、複数の前記第1配線と前記第2配線とをそれぞれ検査する検査工程と、前記第2領域及び前記第3領域において、少なくとも前記第1検査配線及び前記第2検査配線の少なくとも一部を除去することで、前記第1配線及び前記第1検査配線と、前記第2配線及び前記第2検査配線とをそれぞれ非接続状態とする除去工程とを行う。
(1)前記配線形成工程では、複数の前記第1検査配線を同一の材料とし且つ同一の層に形成しているのに対し、前記第2検査配線を前記第1検査配線とは異なる材料とし且つ前記第1検査配線とは絶縁層を介在させつつ異なる層に形成している。このようにすれば、第1検査配線と第2検査配線とにおける少なくとも一部同士が重なり合う配置を採ることが可能となるので、複数の第1検査配線及び第2検査配線をより高密度に配することができ、第2領域及び第3領域の狭小化を図る上でより好適となる。
(1)前記配線形成工程と前記検査工程との間に基板母材を分割することで前記基板を複数枚取り出す基板分割工程を行うようにしており、前記配線形成工程では、前記一方の検査配線と前記他方の検査配線との少なくともいずれか一方を、前記基板分割工程における前記基板の分割位置を跨ぐ形で形成している。このようにすれば、基板分割工程を行う前の段階では、基板母材において基板の分割位置を跨ぐ形で形成された検査配線の線幅が十分に大きく確保されるとともにその配線抵抗が低くなっているので、ESD(静電気放電)対策などに有効である。また、基板分割工程を経た後においても、検査配線が外周側領域の外端位置にまで存在することになるから、当該検査配線の線幅が大きく確保されていてESD対策などに有効である。
(1)前記配線形成工程では、前記基板のうち少なくとも一部が前記除去工程で除去されない予定の位置に配される複数の除去検査入力部を形成し、複数の前記除去検査入力部間を接続し且つ前記基板のうち前記除去工程で除去される予定の位置に配される除去検査接続配線を形成しており、前記除去工程を行った後に、複数の前記除去検査入力部間の通電状態に基づいて前記除去工程が正常に行われたか否かを判定する前記除去検査工程を行う。このようにすれば、除去工程が正常に行われれば、除去検査接続配線が除去されているので、除去検査工程では複数の除去検査入力部間が通電不能となる。一方、除去工程が正常に行われなければ、除去検査接続配線が完全には除去されないため、除去検査工程では複数の除去検査入力部間が通電可能となる。このような除去検査工程を経ることで、不良品の低減が図られる。
本発明の実施形態1を図1から図15によって説明する。本実施形態では、液晶表示装置10を構成する液晶パネル(表示パネル)11に備えられるアレイ基板20の製造方法について例示する。なお、各図面の一部にはX軸、Y軸及びZ軸を示しており、各軸方向が各図面で示した方向となるように描かれている。また、図3に示す上側を表側とするとともに同図下側を裏側とする。
実施形態1の変形例1について図16を用いて説明する。ここでは、第1配線接続部49‐1の配置を変更したものを示す。
実施形態1の変形例2について図17を用いて説明する。ここでは、上記した実施形態1の変形例1からさらに第1配線接続部49‐2の配置を変更したものを示す。
実施形態1の変形例3について図18を用いて説明する。ここでは、上記した実施形態1の変形例1からさらに第1配線接続部49‐3の配置を変更したものを示す。
実施形態1の変形例4について図19を用いて説明する。ここでは、上記した実施形態1の変形例1からさらに第1ソースドライバ側検査配線45A‐4の構成、及びソース配線27‐4との接続構造を変更したものを示す。
実施形態1の変形例5について図20を用いて説明する。ここでは、上記した実施形態1の変形例1からさらに第1ソースドライバ側検査配線45A‐5の配置を変更したものを示す。
本発明の実施形態2を図21によって説明する。この実施形態2では、ゲートドライバ側検査配線146の配置などを変更したものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
本発明の実施形態3を図22によって説明する。この実施形態3では、アレイ基板220の非表示領域NAAにおけるソースドライバSD側の端部に、冗長配線58を形成し、その冗長配線58を検査するための第2ソースドライバ側検査配線245Bを形成するなどしたものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
本発明の実施形態4を図23によって説明する。この実施形態4では、第1ソースドライバ側検査配線345Aの設置数などを変更したものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
実施形態4の変形例1について図24を用いて説明する。ここでは、第1配線接続部349‐1の配置を変更したものを示す。
実施形態4の変形例2について図25を用いて説明する。ここでは、第1配線接続部349‐2の配置を変更したものを示す。
実施形態4の変形例3について図26を用いて説明する。ここでは、上記した実施形態4の変形例2からさらに第1ソースドライバ側検査配線345A‐3の構成、及びソース配線327‐3との接続構造を変更したものを示す。
実施形態4の変形例4について図27を用いて説明する。ここでは、上記した実施形態4の変形例3からさらに第1配線接続部349‐4の配置を変更したものを示す。
本発明の実施形態5を図28によって説明する。この実施形態5では、アレイ基板420の非表示領域NAAに電源配線59、クロック配線60及びグランド配線61を設けるようにしたものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
本発明の実施形態6を図29または図30によって説明する。この実施形態6では、ゲートドライバGDを除去したものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
本発明の実施形態7を図31によって説明する。この実施形態7は、上記した実施形態1の変形例とも言うべきものであって、ソースドライバSDの設置数及び共通配線644の配置を変更したものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
本発明の実施形態8を図32によって説明する。この実施形態8では、ソース配線727が表示領域AAと非表示領域NAAとで異なる層の金属膜からなる構成としたものを示す。なお、上記した実施形態1と同様の構造、作用及び効果について重複する説明は省略する。
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
(1)上記した各実施形態以外にも、液晶パネル(アレイ基板)の製造方法は適宜に変更可能である。例えば、図33に示すように、各検査配線及び各検査入力部を用いた検査工程を二度行うようにし、一度目の第1検査工程を分断工程を終えた後に行い、二度目の第2検査工程を偏光板貼り付け工程を終えた後に行うようにしても構わない。
Claims (15)
- 基板上に、
前記基板における第1領域と、前記第1領域の外側に隣り合う第2領域とに跨る形で複数の第1配線を形成し、
前記第2領域と、前記第1領域の外側に隣り合い且つ前記第2領域に隣り合う第3領域とに跨る形で複数の第1検査配線を形成し、
前記第2領域に、前記第1配線と前記第1検査配線とを接続する複数の第1配線接続部を形成し、
前記第1領域と前記第3領域とに跨る形で第2配線を形成し、
前記第3領域に第2検査配線、及び前記第2配線と前記第2検査配線とを接続する第2配線接続部をそれぞれ形成する、
配線形成工程と、
複数の前記第1検査配線と前記第2検査配線とに検査信号を入力することで、複数の前記第1配線と前記第2配線とをそれぞれ検査する検査工程と、
前記第2領域及び前記第3領域において、少なくとも前記第1検査配線及び前記第2検査配線の少なくとも一部を除去することで、前記第1配線及び前記第1検査配線と、前記第2配線及び前記第2検査配線とをそれぞれ非接続状態とする除去工程とを行う素子基板の製造方法。 - 前記配線形成工程では、複数の前記第1検査配線を同一の材料とし且つ同一の層に形成しているのに対し、前記第2検査配線を前記第1検査配線とは異なる材料とし且つ前記第1検査配線とは絶縁層を介在させつつ異なる層に形成している請求項1記載の素子基板の製造方法。
- 前記配線形成工程では、
複数の前記第1配線及び前記第2配線を前記第2検査配線と同一の材料とし且つ同一の層に形成し、
前記絶縁層のうち前記第1配線または前記第1検査配線と重畳する位置に開口部を形成し、
前記開口部を覆う形で異なる層である前記第1配線と前記第1検査配線とを接続する前記第1配線接続部を形成している請求項2記載の素子基板の製造方法。 - 前記配線形成工程では、画素電極を形成するとともに、前記第1配線接続部を前記画素電極と同一の材料とし且つ同一の層に形成している請求項3記載の素子基板の製造方法。
- 前記配線形成工程では、複数の前記第1検査配線及び前記第2検査配線に接続されるESD保護回路を形成している請求項1から請求項4のいずれか1項に記載の素子基板の製造方法。
- 前記配線形成工程では、前記ESD保護回路として、複数の前記第1検査配線同士と、前記第1検査配線及び前記第2検査配線とをそれぞれ接続し、且つ閾値電圧が前記検査工程にて前記第1検査配線及び前記第2検査配線に入力される前記検査信号の電圧値よりも相対的に高いトランジスタを形成している請求項5記載の素子基板の製造方法。
- 前記配線形成工程では、複数の前記第1検査配線として前記第2領域の外端に並行するものを少なくとも一対形成するとともに、複数の前記第1配線接続部を、前記第2領域の外端に並行する少なくとも一対の前記第1検査配線の間に配し且つその延在方向に沿って並列するよう形成している請求項1から請求項6のいずれか1項に記載の素子基板の製造方法。
- 前記配線形成工程では、複数の前記第1検査配線として前記第2領域の外端に並行するものを少なくとも一対形成するとともに、複数の前記第1配線接続部を、前記第2領域の外端に並行する少なくとも一対の前記第1検査配線のうちのいずれか一方を挟み込む位置に形成している請求項1から請求項6のいずれか1項に記載の素子基板の製造方法。
- 基板上に、
前記基板における非除去領域と、前記非除去領域の外側に隣り合う第1除去領域とに跨る形で配線を形成し、
前記第1除去領域と、前記非除去領域の外側に隣り合い且つ前記第1除去領域に隣り合う第2除去領域とに跨る形で検査配線を形成し、
前記第1除去領域に、前記配線と前記検査配線とを接続する配線接続部を形成し、
前記非除去領域と前記第2除去領域とに跨る形で前記検査配線に接続される検査入力部を形成する、
配線形成工程と、
前記検査入力部に検査信号を入力することで、前記検査配線を介して前記配線を検査する検査工程と、
前記第1除去領域及び前記第2除去領域において、少なくとも前記検査配線の少なくとも一部と前記配線接続部とを除去することで、前記配線と前記検査配線とを非接続状態とするとともに、前記検査入力部の一部を除去する除去工程とを行う素子基板の製造方法。 - 基板上に、
前記基板における内周側領域と、前記内周側領域を両外側から挟むようにして配される一対の外周側領域とに跨る形で少なくとも一対の配線を形成し、
前記一対の外周側領域のうちの一方の外周側領域に、前記少なくとも一対の配線のうちの一方の配線における一端側に接続される一方の検査配線を形成し、
前記一対の外周側領域のうちの他方の外周側領域に、前記少なくとも一対の配線のうちの他方の配線における他端側に接続される他方の検査配線を形成する、
配線形成工程と、
前記一方の検査配線と前記他方の検査配線とに検査信号を入力することで、前記少なくとも一対の配線を検査する検査工程と、
前記一対の外周側領域において、少なくとも前記一方の検査配線及び前記他方の検査配線の少なくとも一部ずつを除去することで、前記一方の配線及び前記一方の検査配線と、前記他方の配線及び前記他方の検査配線とをそれぞれ非接続状態とする除去工程とを行う素子基板の製造方法。 - 前記配線形成工程と前記検査工程との間に基板母材を分割することで前記基板を複数枚取り出す基板分割工程を行うようにしており、
前記配線形成工程では、前記一方の検査配線と前記他方の検査配線との少なくともいずれか一方を、前記基板分割工程における前記基板の分割位置を跨ぐ形で形成している請求項10記載の素子基板の製造方法。 - 前記配線形成工程では、
前記一対の外周側領域の少なくともいずれか一方に第2配線を形成し、
前記第2配線に接続される第2検査配線を前記基板分割工程における前記基板の分割位置を跨ぐ形で形成し、
前記一方の検査配線または前記他方の検査配線と前記第2検査配線とに接続される検査配線接続部を前記基板分割工程における前記基板の分割位置よりも外側の領域に形成しており、
前記基板分割工程では、前記基板母材から前記基板を分割するのに伴って前記基板から前記検査配線接続部を除去している請求項11記載の素子基板の製造方法。 - 前記配線形成工程では、
前記基板のうち少なくとも一部が前記除去工程で除去されない予定の位置に配される複数の除去検査入力部を形成し、
複数の前記除去検査入力部間を接続し且つ前記基板のうち前記除去工程で除去される予定の位置に配される除去検査接続配線を形成しており、
前記除去工程を行った後に、複数の前記除去検査入力部間の通電状態に基づいて前記除去工程が正常に行われたか否かを判定する前記除去検査工程を行う請求項1から請求項12のいずれか1項に記載の素子基板の製造方法。 - 前記除去工程では、前記基板のうち外端から所定範囲にわたって面取りするようにしている請求項1から請求項13のいずれか1項に記載の素子基板の製造方法。
- 前記基板における配線形成面とは反対側の面に偏光板を取り付ける偏光板取付工程を、前記除去工程に先立って行うようにしている請求項1から請求項14のいずれか1項に記載の素子基板の製造方法。
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