WO2010092639A1 - 表示装置及びその製造方法、並びにアクティブマトリクス基板 - Google Patents
表示装置及びその製造方法、並びにアクティブマトリクス基板 Download PDFInfo
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- WO2010092639A1 WO2010092639A1 PCT/JP2009/005343 JP2009005343W WO2010092639A1 WO 2010092639 A1 WO2010092639 A1 WO 2010092639A1 JP 2009005343 W JP2009005343 W JP 2009005343W WO 2010092639 A1 WO2010092639 A1 WO 2010092639A1
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136259—Repairing; Defects
- G02F1/136263—Line defects
Definitions
- the present invention relates to a display device, a manufacturing method thereof, and an active matrix substrate, and more particularly, to a breakage correction technique for display wiring disposed on the active matrix substrate and the display device.
- the liquid crystal display device includes, for example, an active matrix substrate and a counter substrate that are arranged to face each other.
- This active matrix substrate includes, as display wirings, for example, a plurality of gate lines provided so as to extend in parallel with each other, and a plurality of source lines provided so as to extend in parallel with each other in a direction orthogonal to each gate line. It has. Therefore, in the liquid crystal display device provided with this active matrix substrate, when a disconnection occurs in the display wiring of the gate line or the source line, the display signal from the drive circuit is transmitted from the disconnection portion in the display wiring in which the disconnection has occurred. Since it is not supplied first, there is a problem that display quality is remarkably lowered.
- JP 2000-321599 A Japanese Patent Laid-Open No. 11-160677 JP 2000-105576 A JP 2008-58337 A
- FIG. 14 is a plan view of a conventional liquid crystal display device 150 corresponding to the schematic plan view of the liquid crystal display element described in FIG. 5 of Patent Document 1 and the driving circuit board disposed on the outer periphery thereof.
- the liquid crystal display device 150 is attached to the liquid crystal display panel 140, three film substrates 141 attached to the upper end of the liquid crystal display panel 140 in the drawing, and upper ends of the film substrates 141 in the drawing, respectively.
- Printed circuit board 145 As shown in FIG. 14, the liquid crystal display device 150 is attached to the liquid crystal display panel 140, three film substrates 141 attached to the upper end of the liquid crystal display panel 140 in the drawing, and upper ends of the film substrates 141 in the drawing, respectively.
- Printed circuit board 145 is attached to the liquid crystal display panel 140, three film substrates 141 attached to the upper end of the liquid crystal display panel 140 in the drawing, and upper ends of the film substrates 141 in the drawing, respectively.
- the liquid crystal display panel 140 is provided in the display region D so as to extend in parallel to each other in a direction orthogonal to the source lines 103 and a plurality of source lines 103 provided to extend in parallel to each other. And a plurality of gate lines (not shown).
- the plurality of source lines 103 are divided into three blocks Ba, Bb, and Bc for each of a plurality of adjacent lines, and are provided for each of the blocks Ba, Bb, and Bc.
- the driving circuit (not shown) on the film substrate 141 is connected.
- the liquid crystal display device 150 extends along the lower side and the left side of the liquid crystal display panel 140 so as to intersect the lower end portion of each source line 103 in the drawing, and the film substrate on the left side in the drawing.
- a first wiring path Wa provided in a substantially U shape so as to extend along the upper side of the printed circuit board 145 in the figure, and a display area for each of the blocks Ba, Bb and Bc of the liquid crystal display panel 140.
- Three second wiring paths Wb provided in an L shape so as to intersect the upper end portion of each source line 103 in the drawing outside D and to intersect the first wiring path Wa on the printed circuit board 145. I have.
- the printed circuit board 145 is provided with an amplifier circuit A at the left end portion of the first wiring path Wa in the drawing.
- a display signal (source signal) from a drive circuit (not shown) provided on the film substrate 141 is applied to the source line 103 in the lower part of the figure than the broken X portion. Is supplied via the second wiring path Wb of the block Bb and the first wiring path Wa having the amplifier circuit A, and from the disconnection point (X portion) of the source line 103 before the drive circuit. Since the source signal is supplied, the disconnection of the source line 103 can be corrected.
- the second wiring path Wb for one block is connected to the portion above the X portion of the source line 103 in which the disconnection is corrected, as shown in FIG.
- the second wiring path Wb intersects all the source lines 103 arranged in the block Bb, the electrical resistance due to the routing of the second wiring path Wb for one block and the second for one block.
- a load of electric capacity is applied at the intersection of the wiring path Wb and each source line 103, and the source signal is delayed in the portion up to the disconnection portion (X portion) of the source line 103 in which the disconnection is corrected.
- each pixel along the source line 103 whose wire break has been corrected has different luminance due to insufficient charging, so that the display quality may be deteriorated.
- the present invention has been made in view of such a point, and an object of the present invention is to suppress signal delay in the display wiring when the disconnection is corrected.
- the present invention amplifies not only the other side of the display wiring (the side opposite to the drive circuit) but also one side (the drive circuit side) of the display signal from the drive circuit.
- a wiring path is provided so as to be supplied via a circuit.
- a display device includes a display panel provided with a plurality of display wirings so as to extend in parallel with each other, and provided on one end side of each of the display wirings.
- a drive circuit connected to the first wiring path, a first wiring path and a second wiring path provided so as to intersect one end of each display wiring line in an insulated state, and the other end of each display wiring line
- a first wiring path and a third wiring path respectively connected to the first wiring path and the second wiring path, the path including the first wiring path and the second wiring path, and the first wiring path
- Each of the routes including the wiring route and the third wiring route is provided with an amplifier circuit.
- both ends of each display wiring are supplied to the other side (opposite to the driving circuit) of the display wiring from which the display signal from the driving circuit is disconnected via the amplifier circuit.
- the display wiring from one side (driving circuit side) where the display signal from the driving circuit is disconnected Since the second wiring path is provided so as to intersect with one end of each display wiring in an insulated state in order to be supplied via the amplifier circuit, it is assumed that in one of the plurality of display wirings When the presence of disconnection is detected, one end of the display wiring in which the disconnection is detected is connected to the first wiring path and the second wiring path, and the other of the display wiring in which the disconnection is detected.
- the display signal from the drive circuit side is to cut one end of the display wiring so that it is not directly supplied line.
- the display signal from the drive circuit is supplied via the amplifier circuit not only to the other side but also to the other side of the display wiring in which the disconnection is corrected. Signal delay in the wiring is suppressed.
- the amplifier circuit may be provided in the first wiring path.
- the amplifier circuit may be provided in each of the second wiring path and the third wiring path.
- one side of the disconnected display wiring via the other amplification circuit different from the amplification circuit for supplying the display signal from the drive circuit to the other side of the disconnected display wiring Since the display signal from the drive circuit is supplied to the display circuit, the ability of the amplifier circuit to supply the display signal from the drive circuit to the other side of the disconnected display wiring, and the disconnected display wiring It is possible to separately set the ability of the amplifier circuit for supplying the display signal from the drive circuit to one side of the signal.
- the amplifier circuit may be built in the drive circuit.
- the plurality of display wirings may be divided into a plurality of blocks for every plurality of adjacent lines, and a plurality of the drive circuits may be provided for each of the blocks.
- the drive circuit is one, the wiring path is designed to be long, so that a signal delay is likely to occur in the display wiring in which the disconnection is corrected, but the disconnection is corrected as described above. Since the signal delay in the display wiring at the time is suppressed, the operational effect of the present invention is effectively exhibited.
- At least one of a load capacitor and a load resistor capable of adjusting the waveform of the display signal from the drive circuit is connected to at least one of the first wiring path, the second wiring path, and the third wiring path. Good.
- At least one of the load capacitance and the load resistance capable of adjusting the waveform of the display signal from the drive circuit is included in at least one of the first wiring route, the second wiring route, and the third wiring route. Since the connection is established, if each pixel along the display wiring in which the disconnection is corrected is overcharged than other normal pixels, the first wiring path, the second wiring path, and the third wiring path By causing at least one of the load capacitance and the load resistance connected to at least one of these to function, the display wiring can be corrected by the first wiring path, the second wiring path, and the third wiring path.
- At least one of a load capacitor and a load resistor capable of adjusting the waveform of the display signal from the drive circuit is provided to be connectable to at least one of the first wiring path, the second wiring path, and the third wiring path. It may be.
- At least one of the load capacitance and the load resistance capable of adjusting the waveform of the display signal from the drive circuit is included in at least one of the first wiring route, the second wiring route, and the third wiring route. Since it is provided so that it can be connected, if each pixel along the display wiring with corrected disconnection is overcharged than other normal pixels, at least one of load capacitance and load resistance and corresponding to it A load capacitance and a load connected to at least one of the first wiring path, the second wiring path, and the third wiring path by connecting at least one of the first wiring path, the second wiring path, and the third wiring path By causing at least one of the resistors to function, the display wiring can be corrected by the first wiring path, the second wiring path, and the third wiring path.
- the drive circuit is provided in the display panel, and a film substrate is attached to the display panel, and at least one of the first wiring path, the second wiring path, and the third wiring path passes through the film substrate. It may be provided to do.
- the drive circuit is provided in the display panel, and at least one of the first wiring path, the second wiring path, and the third wiring path is provided so as to pass through the film substrate. It is possible to simplify the surrounding wiring layout.
- a film substrate is attached to the display panel, the drive circuit is provided on the film substrate, a printed circuit board is attached to the film substrate, the first wiring path, the second wiring path, and the third wiring. At least one of the paths may be provided so as to pass through the film substrate and the printed circuit board.
- the drive circuit is provided on the film substrate, and at least one of the first wiring route, the second wiring route, and the third wiring route is provided so as to pass through the film substrate and the printed circuit board.
- the wiring layout on the film substrate can be simplified.
- the drive circuit, the first wiring path, the second wiring path, and the third wiring path may be provided on the display panel.
- the drive circuit, the first wiring path, the second wiring path, and the third wiring path are provided on the display panel, for example, the wiring layout on the film substrate attached to the display panel is simplified. It becomes possible to do.
- the first wiring path and the second wiring path may be provided so as to be separated from each other so that the display wirings can be cut.
- the first wiring path and the second wiring path are provided so as to be separated from each other by 5 ⁇ m or more, for example, so that the first wiring path and the second wiring path are arranged between the first wiring path and the second wiring path. Since the display wiring in which the disconnection is detected is easily disconnected, it is specifically possible to prevent the display signal from the drive circuit from being directly supplied to one side of the display wiring in which the disconnection is detected.
- the display panel includes a plurality of gate lines and a plurality of source lines provided so as to cross each other, and an insulating film provided between the plurality of gate lines and the plurality of source lines.
- the first wiring path, the second wiring path, and the third wiring path may be provided so as to be connectable by forming a contact hole in the insulating film.
- the insulating film disposed between the first wiring path, the second wiring path, and the third wiring path, and between the plurality of gate lines and the plurality of source lines Since the insulating film to be arranged is the same, it is possible to configure the first wiring path, the second wiring path, and the third wiring path for disconnection correction without adding a manufacturing process.
- the display device manufacturing method includes a display panel provided with a plurality of display wirings so as to extend in parallel to each other, and provided on one end side of each of the display wirings.
- a driving circuit connected to the display wiring, a first wiring path and a second wiring path provided so as to cross one end of each display wiring in an insulated state, and the other of the display wirings And a third wiring path respectively connected to the first wiring path and the second wiring path, the path including the first wiring path and the second wiring path, and the above
- both ends of each display wiring are supplied to the other side (opposite side of the drive circuit) of the display wiring from which the display signal from the drive circuit is disconnected through the amplifier circuit.
- the display wiring from one side (driving circuit side) where the display signal from the driving circuit is disconnected In order to supply via the amplifier circuit, a second wiring path is provided so as to intersect one end of each display wiring in an insulated state. In the disconnection detection step, one of the plurality of display wirings is provided.
- one end of the display wiring in which the disconnection is detected is connected to the first wiring path and the second wiring path, and the display in which the disconnection is detected is displayed. Connect the other end of the wiring to the third wiring path and In the cutting process, one end of the display wiring is cut so that the display signal from the drive circuit is not directly supplied to one side of the display wiring in which the disconnection is detected.
- the display signal from the drive circuit is supplied to the one side as well as the other side of the signal through the amplifier circuit, and the signal delay in the display wiring when the disconnection is corrected is suppressed.
- the wiring connection process and the wiring cutting process may be performed by laser light irradiation.
- each end portion of one end of the display wiring where the disconnection is detected, the first wiring path and the second wiring path, and the display wiring where the disconnection is detected By irradiating laser beams to the intersections between the other end of the first wiring path and the third wiring path, one end of the display wiring where the disconnection is detected is connected to the first wiring path and the second wiring path. The other end of the display wiring in which the disconnection is detected is connected to the third wiring path, and in the wiring cutting process, one end of the display wiring in which the disconnection is detected is irradiated with laser light.
- the display signal from the drive circuit is not directly supplied to one side of the display wiring in which the disconnection is detected, so that not only the other side of the display wiring in which the disconnection is corrected but also the one side is driven.
- Display signal from the circuit passes through the amplifier circuit Supplied Te, the signal delay in the display wiring when modifying the disconnection is specifically inhibited.
- the active matrix substrate according to the present invention is provided on a plurality of display wirings provided so as to extend in parallel with each other and on one end side of each of the display wirings, and is connected to the display wirings. Insulated at the other end of each display wiring and the first wiring path and the second wiring path provided so as to intersect with one end of each display wiring in an insulated state. And a third wiring path connected to the first wiring path and the second wiring path, respectively, the path including the first wiring path and the second wiring path, and the first wiring path and Each of the paths including the third wiring path is provided with an amplifier circuit.
- both ends of each display wiring are supplied to the other side (opposite to the driving circuit) of the display wiring from which the display signal from the driving circuit is disconnected via the amplifier circuit.
- the display wiring from one side (driving circuit side) where the display signal from the driving circuit is disconnected Since the second wiring path is provided so as to intersect with one end of each display wiring in an insulated state in order to be supplied via the amplifier circuit, it is assumed that in one of the plurality of display wirings When the presence of disconnection is detected, one end of the display wiring in which the disconnection is detected is connected to the first wiring path and the second wiring path, and the other of the display wiring in which the disconnection is detected.
- the display signal from the drive circuit side is to cut one end of the display wiring so that it is not directly supplied line.
- the display signal from the drive circuit is supplied via the amplifier circuit not only to the other side but also to the other side of the display wiring where the disconnection is corrected. Therefore, the disconnection is corrected in the active matrix substrate. In this case, signal delay in the display wiring is suppressed.
- the wiring path is provided so as to supply not only the other side of the display wiring from which the display signal from the drive circuit is disconnected but also to the other side through the amplifier circuit.
- the signal delay in the display wiring when correcting the error can be suppressed.
- FIG. 1 is a plan view of a liquid crystal display device 50a according to the first embodiment.
- FIG. 2 is a plan view showing one pixel of the active matrix substrate 20a constituting the liquid crystal display device 50a.
- FIG. 3 is a cross-sectional view of the active matrix substrate 20a and the liquid crystal display panel 40a including the active matrix substrate 20a along the line III-III in FIG.
- FIG. 4 is a cross-sectional view of the active matrix substrate 20a taken along line IV-IV in FIG.
- FIG. 5 is a plan view of the liquid crystal display device 50b according to the second embodiment.
- FIG. 6 is a plan view of a liquid crystal display device 50c according to the third embodiment.
- FIG. 7 is a plan view of the load capacitor C constituting the liquid crystal display device 50c.
- FIG. 8 is a plan view of another load capacitor C constituting the liquid crystal display device 50c.
- FIG. 9 is a plan view of the load resistance portion R constituting the liquid crystal display device 50c.
- FIG. 10 is a plan view of another load resistance unit R constituting the liquid crystal display device 50c.
- FIG. 11 is a plan view of the load resistance capacitor unit E constituting the liquid crystal display device 50c.
- FIG. 12 is a plan view of a liquid crystal display device 50d according to the fourth embodiment.
- FIG. 13 is a plan view of a liquid crystal display device 50e according to the fifth embodiment.
- FIG. 14 is a plan view of a conventional liquid crystal display device 150.
- Embodiment 1 of the Invention 1 to 4 show Embodiment 1 of a display device according to the present invention, a method for manufacturing the same, and an active matrix substrate.
- FIG. 1 is a plan view of the liquid crystal display device 50a of the present embodiment
- FIG. 2 is a plan view showing one pixel of the active matrix substrate 20a constituting the liquid crystal display device 50a.
- 3 is a cross-sectional view of the active matrix substrate 20a and the liquid crystal display panel 40a including the active matrix substrate 20a along the line III-III in FIG. 2, and
- FIG. 4 is along the line IV-IV in FIG. It is sectional drawing of the active matrix substrate 20a.
- the liquid crystal display device 50a includes a liquid crystal display panel 40a and three film substrates 41a attached to the upper end of the liquid crystal display panel 40a via ACF (Anisotropic Conductive Film, not shown).
- Each film substrate 41a includes a printed circuit board 45a attached to the upper end of the film substrate 41a via an ACF (not shown).
- the liquid crystal display panel 40 a includes an active matrix substrate 20 a and a counter substrate 30 that are arranged to face each other, and a liquid crystal layer 25 provided between the active matrix substrate 20 a and the counter substrate 30. ing.
- a display area D for image display is defined, and the display area D has three blocks Ba, Bb and Bc extending in parallel to each other.
- the active matrix substrate 20a includes a plurality of gate lines 1a provided as display wirings so as to extend in parallel to each other on the insulating substrate 10a in the display region D, and each gate line 1a.
- a plurality of capacitor lines 1b provided so as to extend in parallel with each other, a gate insulating film 11 provided so as to cover each gate line 1a and each capacitor line 1b, and each gate line on the gate insulating film 11
- a plurality of source lines 3 provided as display wirings so as to extend in parallel with each other in a direction orthogonal to 1a, and a plurality of TFTs (Thin Film Transistor) provided at the intersection of each gate line 1a and each source line 3, respectively.
- TFTs Thin Film Transistor
- an interlayer insulating film 12 provided so as to cover each TFT 5 and each source line 3
- a plurality of pixel electrodes 6 provided in a matrix on the interlayer insulating film 12, and each pixel And an alignment film (not shown) provided so as to cover the electrode 6.
- the TFT 5 includes a gate electrode 1aa which is a portion protruding to the side of each gate line 1a, a gate insulating film 11 provided so as to cover the gate electrode 1aa, and a gate insulating film 11 includes a semiconductor layer 2 provided in an island shape at a position corresponding to the gate electrode 1aa, and a source electrode 3a and a drain electrode 3b provided on the semiconductor layer 2 so as to face each other.
- the source electrode 3a is a portion protruding to the side of each source line 3 as shown in FIG.
- the drain electrode 3b is extended to a region overlapping the capacitor line 1b to form an auxiliary capacitor, and a contact hole 12a formed in the interlayer insulating film 12 on the capacitor line 1b. Is connected to the pixel electrode 6 via
- the counter substrate 30 includes an insulating substrate 10b, a black matrix 16 provided in a frame shape on the insulating substrate 10b and in a lattice shape in the frame, and between the lattices of the black matrix 16.
- an alignment film (not shown) provided so as to cover the common electrode 18.
- the liquid crystal layer 25 is made of a nematic liquid crystal material having electro-optical characteristics.
- a source driver 44a is mounted on the film substrate 41a as a drive circuit.
- all the source lines 3 arranged in each of the blocks Ba to Bc are connected to the source driver 44a, and a part of a first wiring path Wa, which will be described later, and an amplifier circuit provided on the part A, a part of the second wiring path Wb, and a part of the third wiring path Wc are incorporated.
- Each gate line 1a is connected to a panel driver or a gate driver (not shown) mounted on a film substrate attached to the end.
- the liquid crystal display device 50a extends along the upper side in the drawing of the liquid crystal display panel 40a so as to intersect the upper end portions in the drawing of all the source lines 3 arranged in the respective blocks Ba, Bb and Bc. After that, in the figure of each source line 3 for each of the blocks Ba, Bb, and Bc, as well as the three substantially L-shaped first wiring paths Wa bent to the film substrate 41a and the printed circuit board 45a side. After extending along the upper side in the drawing of the liquid crystal display panel 40a so as to intersect the upper end portion, the liquid crystal display panel 40a is bent toward the film substrate 41a and the printed circuit board 45a and connected to each first wiring path Wa on the printed circuit board 45a.
- the film on the left side of the figure after extending along the upper side of the printed board 45a from the connection portions of the three substantially L-shaped second wiring paths Wb and the first wiring path Wa and the second wiring path Wb Substrate 41a The three substantially U-shaped lines extending along the left side in the drawing of the liquid crystal display panel 40a and extending along the lower side in the drawing of the liquid crystal display panel 40a so as to intersect the lower end portion of the source line 3 in the drawing.
- the first wiring path Wa and the second wiring path Wb are separated from each other by, for example, 5 ⁇ m or more so that the source line 3 disposed therebetween can be cut.
- a gate signal is sent from a gate driver (not shown) to the gate electrode 1aa via the gate line 1a, and the TFT 5 is turned on.
- a source signal is sent from the source driver 44a to the source electrode 3a through the source line 3, and a predetermined charge is written into the pixel electrode 6 through the semiconductor layer 2 and the drain electrode 3b.
- a potential difference is generated between each pixel electrode 6 of the active matrix substrate 20 a and the common electrode 18 of the counter substrate 30, and a predetermined voltage is applied to the liquid crystal layer 25.
- an image is displayed by adjusting the light transmittance of the liquid crystal layer 25 by changing the alignment state of the liquid crystal layer 25 according to the magnitude of the voltage applied to the liquid crystal layer 25.
- the manufacturing method of this embodiment includes an active matrix substrate manufacturing process, a counter substrate manufacturing process, a liquid crystal display panel manufacturing process, a disconnection detection process, a wiring connection process, a wiring cutting process, and a mounting process.
- a titanium film, an aluminum film, a titanium film, and the like are sequentially formed on the entire substrate of the insulating substrate 10a such as a glass substrate by sputtering, and then patterned by photolithography to obtain the gate line 1a and the gate electrode.
- the insulating substrate 10a such as a glass substrate by sputtering
- the gate line 1a and the gate electrode are formed to a thickness of about 4000 mm.
- the entire substrate on which the gate line 1a, the gate electrode 1aa, the capacitor line 1b, the panel part of the first wiring path Wa, the panel part of the second wiring path Wb, and the panel part of the third wiring path Wc are formed For example, a silicon nitride film or the like is formed by plasma CVD (Chemical Vapor Deposition), and the gate insulating film 11 is formed to a thickness of about 4000 mm.
- an intrinsic amorphous silicon film and an n + amorphous silicon film doped with phosphorus are successively formed on the entire substrate on which the gate insulating film 11 is formed by a plasma CVD method, and then by photolithography.
- Patterning in an island shape on the gate electrode 1aa forms a semiconductor formation layer in which an intrinsic amorphous silicon layer having a thickness of about 2000 mm and an n + amorphous silicon layer having a thickness of about 500 mm are stacked.
- an aluminum film and a titanium film are formed on the entire substrate on which the semiconductor formation layer is formed by sputtering, and then patterned by photolithography to form the source line 3, the source electrode 3a, and the drain electrode.
- 3b is formed to a thickness of about 2000 mm.
- the n + amorphous silicon layer of the semiconductor formation layer is etched by using the source electrode 3a and the drain electrode 3b as a mask, thereby patterning the channel portion to form the semiconductor layer 2 and the TFT 5 including the same.
- an acrylic photosensitive resin is applied to the entire substrate on which the TFT 5 is formed by a spin coating method, and the applied photosensitive resin is exposed through a photomask and then developed.
- An interlayer insulating film 12 having a contact hole 12a is formed on the drain electrode 3b to a thickness of about 2 ⁇ m.
- an ITO (Indium Tin Oxide) film is formed on the entire substrate on the interlayer insulating film 12 by sputtering, and then patterned by photolithography to form the pixel electrode 6 with a thickness of about 1000 mm. .
- a polyimide resin is applied to the entire substrate on which the pixel electrodes 6 are formed by a printing method, and then a rubbing process is performed to form an alignment film with a thickness of about 1000 mm.
- the active matrix substrate 20a can be manufactured.
- an acrylic photosensitive resin in which fine particles such as carbon are dispersed is applied to the whole substrate of the insulating substrate 10b such as a glass substrate by a spin coating method, and the applied photosensitive resin is applied to a photomask.
- the black matrix 16 is formed to a thickness of about 1.5 ⁇ m by developing after being exposed to light.
- an acrylic photosensitive resin colored in red, green, or blue is applied onto the substrate on which the black matrix 16 is formed, and the applied photosensitive resin is exposed through a photomask. Later, patterning is performed by developing to form a colored layer (for example, a red layer) of a selected color with a thickness of about 2.0 ⁇ m. Further, the same process is repeated for the other two colors to form other two colored layers (for example, a green layer and a blue layer) with a thickness of about 2.0 ⁇ m, thereby forming the color filter 17.
- a colored layer for example, a red layer
- other two colors for example, a green layer and a blue layer
- an ITO film is formed on the substrate on which the color filter 17 is formed by sputtering, and the common electrode 18 is formed to a thickness of about 1500 mm.
- a phenol novolac-based photosensitive resin is applied to the entire substrate on which the common electrode 18 is formed by spin coating, and the applied photosensitive resin is exposed through a photomask and then developed.
- the photo spacer is formed to a thickness of about 4 ⁇ m.
- a polyimide resin is applied to the entire substrate on which the photo spacer is formed by a printing method, and then a rubbing process is performed to form an alignment film with a thickness of about 1000 mm.
- the counter substrate 30 can be manufactured as described above.
- a seal material composed of ultraviolet curing and thermosetting resin or the like is drawn in a frame shape on the counter substrate 30 manufactured in the counter substrate manufacturing step.
- a liquid crystal material is dropped onto a region inside the sealing material in the counter substrate 30 on which the sealing material is drawn.
- the bonded body is released to atmospheric pressure. By doing, the surface and the back surface of the bonded body are pressurized.
- the sealing material is cured by heating the bonded body.
- the liquid crystal display panel 40a can be manufactured as described above. Further, after attaching polarizing plates to the front and back surfaces of the manufactured liquid crystal display panel 40a, the following disconnection detection process is performed, and when the presence of disconnection is detected in the source line 3, the following wiring connection is performed. The disconnection of the source line 3 is corrected by performing the process and the wiring cutting process.
- a gate inspection signal having a bias voltage of ⁇ 10 V, a period of 16.7 msec, a pulse voltage of +15 V having a pulse width of 50 ⁇ sec is input to each gate line 1 a to turn on all the TFTs 5.
- a source inspection signal having a potential of ⁇ 2 V whose polarity is inverted every 16.7 msec is inputted to each source line 3, and the pixel electrode 6 corresponds to ⁇ 2 V via the source electrode 3 a and the drain electrode 3 b of each TFT 5.
- a common electrode inspection signal having a direct current potential of ⁇ 1 V is input to the common electrode 18.
- a voltage is applied to the liquid crystal capacitor (liquid crystal layer 25) formed between the pixel electrode 6 and the common electrode 18, and the pixel formed by the pixel electrode 6 is turned on, so that a normally white mode (voltage In white display when no voltage is applied, the display changes from white to black.
- the display state can be visually confirmed by arranging a light source on the back side of the liquid crystal display panel 40a.
- a predetermined charge cannot be written to the corresponding pixel electrode 6 and is not lit (bright spot). X part) is detected.
- the laser beam oscillated from the YAG laser or the like is irradiated from the side of the insulating substrate 10a to the Y portion between the intersecting portions Ma and Mb of the upper end portion in FIG.
- the upper end portion of the disconnected source line 3 in FIG. 1 is cut at the Y portion so that the source signal from the source driver 44a is not directly supplied to the upper side of the disconnected source line 3 in FIG.
- ⁇ Mounting process> In advance, three film substrates 41a are respectively pasted on the printed circuit board 45a through the ACF, and the liquid crystal display panel 40a in which no disconnection is detected in the disconnection detection process or the wiring connection process and the wiring disconnection process are performed. Each film substrate 41a is affixed to the liquid crystal display panel 40a in which the disconnection is corrected via the ACF.
- the liquid crystal display device 50a of this embodiment can be manufactured.
- the source signal from the source driver 44a is amplified with respect to the other side of the source line 3 (the side opposite to the source driver 44a).
- the first wiring path Wa and the third wiring path Wc provided so as to cross both ends of each source line 3 in an insulated state in order to be supplied via the circuit A, from the source driver 44a
- the second wiring so as to intersect one end of each source line 3 in an insulated state in order to supply the source signal to one side of the display wiring (source driver 44a side) via the amplifier circuit A.
- the path Wb Since the path Wb is provided, in the disconnection detection step, when the presence of disconnection is detected in one of all the source lines 3 arranged in each of the blocks Ba to Bc, In the line connecting step, one end of the source line 3 in which disconnection is detected is connected to the first wiring path Wa and the second wiring path Wb, and the other end of the source line 3 in which disconnection is detected and the first end Three wiring paths Wc are connected, and one end portion of the source line 3 is cut so that the source signal from the source driver 44a is not directly supplied to one side of the source line 3 where the disconnection is detected in the wiring cutting step. It will be.
- the source signal from the source driver 44a is supplied via the amplifier circuit A not only to the other side but also to the other side of the source line 3 in which the disconnection is corrected.
- Signal delay on the line 3 can be suppressed. That is, a signal delay in the source line 3 when the disconnection is corrected can be suppressed, and a liquid crystal display device capable of correcting the disconnection by suppressing the delay of the source signal can be provided with an easy configuration.
- the disconnected source line 3 is connected to the other side of the disconnected source line 3 via the amplifier circuit A for supplying a source signal from the source driver 44a. Since the source signal from the source driver 44a is supplied to one side, the signal delay in the source line 3 when correcting the disconnection can be suppressed without adding the amplifier circuit A.
- the liquid crystal display device 50a of the present embodiment since the amplifier circuit A is built in the source driver 44a, the number of external substrates attached to the liquid crystal display panel 40 can be reduced.
- the source driver 44a is provided for each block Ba, Bb and Bc, the disconnection of the source line 3 is corrected for each block a, Bb and Bc. be able to.
- the first wiring path Wa and the second wiring path Wb are provided so as to be separated from each other by, for example, 5 ⁇ m or more. It is possible to easily cut the source line 3 in which the disconnection arranged between the two wiring paths Wb is detected.
- the insulating film disposed between the source lines 3, the first wiring path Wa, the second wiring path Wb, and the third wiring path Wc, and the plurality of gates Since the insulating film disposed between the line 1a and the plurality of source lines 3 is the same gate insulating film 11, the first wiring path Wa and the second wiring path for correcting the disconnection are added without adding a manufacturing process.
- Wb and the third wiring path Wc can be configured.
- the manufacturing method which affixes a polarizing plate before a disconnection detection process was illustrated, you may affix a polarizing plate in a mounting process.
- the polarizing plate is attached in the mounting process, the liquid crystal display panel 40a in which the disconnection is not detected in the disconnection detection process, or the liquid crystal display panel in which the disconnection is corrected through the wiring connection process and the wiring cutting process.
- a polarizing plate is affixed on the front surface and the back surface of 40a.
- the polarizing plate is pasted in the mounting process, the polarizing plate is disposed in the disconnection detecting process, between the surface side of the liquid crystal display panel 40a and between the liquid crystal display panel 40a and the light source. The state will be confirmed.
- the manufacturing method in which the wiring connection process and the wiring cutting process are sequentially performed after the disconnection detection process is exemplified, but the order in which the wiring connection process and the wiring cutting process are performed is not particularly limited.
- FIG. 5 is a plan view of the liquid crystal display device 50b of the present embodiment.
- the same parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.
- the liquid crystal display device 50b includes a liquid crystal display panel 40b, three film substrates 41b each attached to the upper end of the liquid crystal display panel 40b via an ACF (not shown), and each film substrate. 41b is provided with a printed circuit board 45b attached to the upper end in the figure via an ACF (not shown).
- the liquid crystal display panel 40b is substantially the same as the liquid crystal display panel 40a of the first embodiment except for the shape of the wiring patterns of the first wiring path Wa, the second wiring path Wb, and the third wiring path Wc. Are the same.
- a source driver 44b is mounted on the film substrate 41b as a drive circuit.
- all the source lines 3 arranged in the respective blocks Ba to Bc are connected to the source driver 44b, and a part of the third wiring path Wc and the first amplifier circuit provided in the third wiring path Wc are connected.
- Aa, a part of the second wiring path Wb, and the second amplifier circuit Ab provided in the part are incorporated.
- the liquid crystal display device 50b extends along the upper side in the drawing of the liquid crystal display panel 40b so as to intersect the upper end portions in the drawing of all the source lines 3 arranged in the blocks Ba, Bb and Bc.
- the three line-shaped first wiring paths Wa along the upper side in the drawing of the liquid crystal display panel 40b so as to intersect the upper end portion of each source line 3 in the drawing for each block Ba, Bb, and Bc.
- a third wiring paths Wc of substantially U-shaped three extending along the figure lower side of the liquid crystal display panel 40b so as to intersect the lower end in the drawing section of each source line 3.
- the liquid crystal display device 50b having the above configuration is manufactured by changing the pattern shapes of the first wiring path Wa, the second wiring path Wb, and the third wiring path Wc in the manufacturing method of the liquid crystal display device 50a of the first embodiment. be able to.
- the other side of the source line 3 from which the source signal from the source driver 44b is disconnected is connected via the first amplifier circuit Aa.
- the source signal from the source driver 44b is disconnected. Since the second wiring path Wb is provided so as to intersect with one end of each source line 3 in an insulated state in order to supply to one side of the line 3 via the second amplifier circuit Ab, disconnection First delay for supplying a source signal from the source driver 44b to the other side of the disconnected source line 3 can be suppressed. Since the source signal from the source driver 44b is supplied to one side of the disconnected source line 3 via the second amplifier circuit Ab different from the path Aa, the capability of the first amplifier circuit Aa and the second amplifier circuit The ability of Ab can be set separately.
- FIG. 6 is a plan view of the liquid crystal display device 50c of this embodiment.
- FIG. 7 is a plan view of the load capacitor unit C constituting the liquid crystal display device 50c
- FIG. 8 is a plan view of another load capacitor unit C.
- FIG. 9 is a plan view of a load resistance portion R constituting the liquid crystal display device 50c
- FIG. 10 is a plan view of another load resistance portion R.
- FIG. 11 is a plan view of the load resistance capacitor portion E constituting the liquid crystal display device 50c.
- the liquid crystal display device 50c includes a liquid crystal display panel 40c, three film substrates 41a attached to the upper end of the liquid crystal display panel 40c via ACF (not shown), and each film substrate. 41a is provided with a printed circuit board 45a attached to the upper end in the figure via an ACF (not shown).
- the liquid crystal display panel 40c is substantially the same as the liquid crystal display panel 40a of the first embodiment except that the load capacitance portion C is provided in the first wiring path Wa and the third wiring path Wc. Are the same.
- the load capacitor portion C includes an upper capacitor electrode 3ca and a lower capacitor electrode 1ca arranged so as to face each other, and a gate provided between the upper capacitor electrode 3ca and the lower capacitor electrode 1ca. And an insulating film (see FIG. 3 and FIG. 4).
- the upper capacitor electrode 3 ca is formed in the same layer as the source line 3 in the shape of a rectangle with the same material, and is connected to the capacitor line 1 b or the common electrode 18.
- the lower capacitor electrode 1ca is formed in the same layer as the gate line 1a in the rectangular shape with the same material, and is connected to the first wiring path Wa.
- the load capacitance unit C irradiates the Za portion between the first wiring path Wa and the lower capacitive electrode 1ca with a laser beam when unnecessary.
- the connection with Wa is configured to be releasable.
- the load capacitance portion C is provided between the upper capacitance electrode 3cb and the lower capacitance electrode 1cb, which are arranged to face each other, and between the upper capacitance electrode 3cb and the lower capacitance electrode 1cb.
- a gate insulating film (refer to FIG. 11, FIG. 3 and FIG. 4).
- the upper capacitor electrode 3cb is formed in the same layer as the source line 3 in the shape of a rectangle with the same material, and a connecting portion extending linearly from the rectangular portion passes through the gate insulating film 11 to the first wiring path Wa. It is provided to cross.
- the lower capacitor electrode 1cb is formed in the same layer as the gate line 1a in a rectangular shape with the same material, and is connected to the capacitor line 1b or the common electrode 18. Then, as shown in FIG. 8, when necessary, the load capacitance unit C irradiates the intersection Md between the first wiring path Wa and the connection portion of the upper capacitance electrode 3cb with a laser beam. Connection to the wiring path Wa is possible.
- a load resistance portion R may be provided in the first wiring path Wa.
- the load resistance portion R includes a wiring resistance portion 1 d connected in parallel to a part of the first wiring path Wa.
- the wiring resistance portion 1d is formed in the same layer and zigzag in the same layer as the gate line 1a.
- the load resistance portion R irradiates the Zb portion of the first wiring path Wa arranged in parallel to the wiring resistance portion 1d with a laser beam when necessary.
- the path Wa is cut at the Zb portion, and the first wiring path Wa is configured to pass through the wiring resistance portion 1d.
- the load resistance portion R may be configured by a wiring resistance portion 3d that can be connected in parallel to a part of the first wiring path Wa.
- the wiring resistance portion 3d is formed in the same layer as the source line 3 in the zigzag shape with the same material, and both end portions thereof are provided with gate insulating films (refer to FIGS. 11, 3 and 4). Are provided so as to intersect the first wiring path Wa.
- the load resistance portion R irradiates laser light to the intersecting portions Mea and Meb between the wiring resistance portion 3d and the first wiring path Wa, as necessary.
- the first wiring path Wa is configured to pass through the wiring resistance portion 3d.
- a load resistor capacitor E is provided in the first wiring path Wa as shown in FIG. May be.
- the load resistance capacitor unit E includes a wiring resistor unit 3e that can be connected in parallel to a part of the first wiring path Wa, a capacitor electrode 1e that is disposed to face the wiring resistor unit 3e, And a gate insulating film (11, see FIGS. 3 and 4) provided between the wiring resistance portion 3e and the capacitor electrode 1e.
- the wiring resistance portion 3e is formed in the same layer as the source line 3 in the zigzag shape with the same material, and both end portions thereof are provided with gate insulating films (refer to FIG. 11, FIG. 3 and FIG. 4). Are provided so as to intersect the first wiring path Wa.
- the capacitor electrode 1 e is formed in the same layer as the gate line 1 a in the shape of a rectangle with the same material, and is connected to the capacitor line 1 b or the common electrode 18. Then, as shown in FIG. 11, the load resistance capacitance portion E irradiates laser light to the intersecting portions Mfa and Mfb between the wiring resistance portion 3e and the first wiring path Wa, as necessary.
- the part 3e and the first wiring path Wa are connected in parallel, and the Zd part of the first wiring path Wa arranged in parallel to the wiring resistance part 3e is irradiated with laser light, whereby the first wiring path Wa is changed to the Zd part.
- the first wiring path Wa is configured to pass through the wiring resistance portion 3e.
- the liquid crystal display device 50c configured as described above can be manufactured by changing the shape of the wiring pattern in the method for manufacturing the liquid crystal display device 50a of the first embodiment.
- the source signal from the source driver 44a is supplied via the amplifier circuit A to the other side of the disconnected source line 3 as in the first embodiment. Therefore, in addition to the first wiring path Wa and the third wiring path Wc provided so as to cross both ends of each source line 3 in an insulated state, the source line 3 in which the source signal from the source driver 44a is disconnected Since the second wiring path Wb is provided so as to intersect with one end portion of each source line 3 in an insulated state in order to supply to one side of the source line 3 via the amplifier circuit A, when the disconnection is corrected The signal delay in the source line 3 can be suppressed, and the waveform of the source signal from the source driver 44a can be adjusted in the first wiring path Wa and the third wiring path Wc.
- each pixel along the source line 3 in which the disconnection is corrected is assumed to be normal.
- the source line 3 is connected to the first wiring path Wa and the third line by causing at least one of the load capacitor unit C, the load resistor unit R, and the load resistor capacitor unit E to function. It can be corrected by the wiring route Wc.
- the present invention includes at least one of the load capacitance unit C, the load resistance portion R, and the load resistance capacitance unit E in the second wiring path Wb and both of them in the liquid crystal display device 50a of the first embodiment.
- At least one of the first wiring path Wa, the second wiring path Wb, and the third wiring path Wc in the liquid crystal display device 50b of the second embodiment may be provided with a load capacitance unit C, a load resistance unit R, and At least one of the load resistance capacitor portions E may be provided.
- FIG. 12 is a plan view of the liquid crystal display device 50d of this embodiment.
- a COF (Chip On Film) type liquid crystal display device in which a source driver is provided on a film substrate has been exemplified.
- a COG (source circuit) provided on a liquid crystal display panel is provided.
- a chip-on-glass type liquid crystal display device is illustrated.
- the liquid crystal display device 50d includes a liquid crystal display panel 40d and a film substrate 41d attached to the upper end of the liquid crystal display panel 40d via an ACF (not shown).
- one source driver 44d is mounted as a drive circuit outside the display area D.
- all the source lines 3 are connected to the source driver 44d, and one amplifier circuit A is incorporated.
- the liquid crystal display device 50d extends along the upper side in the drawing of the liquid crystal display panel 40d so as to intersect the upper end portion of each source line 3 in the drawing, and then bends toward the film substrate 41d side.
- the source line 3 extends along the upper side of the liquid crystal display panel 40a so as to intersect the upper end of the source line 3 in the figure, and then bent toward the film substrate 41d side.
- the liquid crystal display device 50d having the above configuration is manufactured by changing the pattern shapes of the first wiring path Wa, the second wiring path Wb, and the third wiring path Wc in the manufacturing method of the liquid crystal display device 50a of the first embodiment. be able to.
- the source signal from the source driver 44d is supplied to the other side of the source line 3 through the amplifier circuit A as in the first embodiment. Therefore, in addition to the first wiring path Wa and the third wiring path Wc provided so as to cross both ends of each source line 3 in an insulated state, the source line 3 in which the source signal from the source driver 44d is disconnected Since the second wiring path Wb is provided so as to intersect with one end portion of each source line 3 in an insulated state in order to supply to one side of the source line 3 via the amplifier circuit A, when the disconnection is corrected The signal delay in the source line 3 can be suppressed, the source driver 44d is provided in the liquid crystal display panel 40d, and the third wiring path Wc passes through the film substrate 41d. Because it is kicked, it is possible to simplify the wiring layout around the source driver 44d.
- FIG. 13 is a plan view of the liquid crystal display device 50e of this embodiment.
- the third wiring path Wc is provided so as to pass through the film substrate 41d.
- the third wiring path Wc is provided only in the liquid crystal display panel 40e.
- the liquid crystal display device 50e includes a liquid crystal display panel 40e as shown in FIG.
- a source driver 44e is provided as a drive circuit for each of the blocks Ba, Bb, and Bc.
- all the source lines 3 arranged in each of the blocks Ba to Bc are connected to the source driver 44e, and a part of a first wiring path Wa, which will be described later, and an amplifier circuit provided thereon A, a part of the second wiring path Wb, and a part of the third wiring path Wc are incorporated.
- the liquid crystal display device 50e extends along the upper side of the liquid crystal display panel 40e so as to intersect with the upper ends of the source lines 3 arranged in the blocks Ba, Bb and Bc.
- the second bent portion is bent to the source driver 44e side and connected to each first wiring path Wa in the source driver 44e.
- the liquid crystal display device 50e having the above configuration is manufactured by changing the pattern shapes of the first wiring path Wa, the second wiring path Wb, and the third wiring path Wc in the manufacturing method of the liquid crystal display device 50a of the first embodiment. be able to.
- the source signal from the source driver 44e is supplied to the other side of the disconnected source line 3 via the amplifier circuit A, as in the first embodiment. Therefore, in addition to the first wiring path Wa and the third wiring path Wc provided so as to cross both ends of each source line 3 in an insulated state, the source line 3 in which the source signal from the source driver 44e is disconnected Since the second wiring path Wb is provided so as to intersect with one end portion of each source line 3 in an insulated state in order to supply to one side of the source line 3 via the amplifier circuit A, when the disconnection is corrected The signal delay in the source line 3 can be suppressed, and the source driver 44e, the first wiring path Wa, the second wiring path Wb, and the third wiring path are provided in the liquid crystal display panel 40e. Runode, for example, it is possible to simplify the wiring layout in the film substrate is attached to the liquid crystal display panel (not shown).
- the liquid crystal display device that corrects the disconnection after manufacturing the liquid crystal display panel and the manufacturing method thereof are exemplified.
- the present invention is directed to the active matrix substrate 20a that constitutes the liquid crystal display panel 40a of the first embodiment. After the fabrication, the disconnection may be corrected.
- the active matrix substrate may constitute a liquid crystal display device by enclosing a liquid crystal layer between the counter substrate and the charge charged to each pixel electrode, such as an X-ray sensor. You may comprise the sensor substrate which reads. In the latter case, a liquid crystal layer and a counter substrate for enclosing the liquid crystal layer are not necessary.
- a liquid crystal display device is exemplified as the display device.
- the present invention is also applicable to other display devices such as an organic EL (Electro Luminescence) display device and an FED (Field Emission Display). Can do.
- organic EL Electro Luminescence
- FED Field Emission Display
- the source line is exemplified as the display wiring for correcting the disconnection.
- the present invention can be applied not only to the correction of the disconnection of the gate line but also a short circuit between the gate line and the source line.
- the gate line or the source line is cut by irradiating a laser beam or the like so as to sandwich the short-circuited portion, and the gate line or the source line is disconnected.
- the present invention can be applied to correcting a short circuit between the gate line and the source line.
- the first wiring path, the second wiring path, and the third wiring path are integrally formed.
- the first wiring path, the second wiring path, and the third wiring path are connected to each other.
- Each may be configured by a plurality of wiring portions provided as possible.
- the present invention can suppress the signal delay in the display wiring in which the disconnection is corrected. Therefore, it is desired to reduce the number of expensive source drivers, and the resistance and capacitance due to the wiring path tend to increase. This is particularly effective not only for small and medium-sized liquid crystal display devices but also for liquid crystal display devices for liquid crystal televisions that employ a double speed drive method in which the charging time of each pixel is relatively short.
- the present invention can suppress the signal delay in the display wiring when correcting the disconnection. Therefore, the present invention can be used for personal navigation, industrial equipment, information terminals, etc. that require a reduction in the number of drivers. It is useful for liquid crystal display devices for uses such as notebook computers, monitors, and liquid crystal televisions, as well as small and medium-sized models.
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Abstract
Description
図1~図4は、本発明に係る表示装置及びその製造方法、並びにアクティブマトリクス基板の実施形態1を示している。
まず、ガラス基板などの絶縁基板10aの基板全体に、スパッタリング法により、例えば、チタン膜、アルミニウム膜及びチタン膜などを順に成膜し、その後、フォトリソグラフィによりパターニングして、ゲート線1a、ゲート電極1aa、容量線1b、第1配線経路Waのパネル部分、第2配線経路Wbのパネル部分、及び第3配線経路Wcのパネル部分を厚さ4000Å程度に形成する。
まず、ガラス基板などの絶縁基板10bの基板全体に、スピンコート法により、例えば、カーボンなどの微粒子が分散されたアクリル系の感光性樹脂を塗布し、その塗布された感光性樹脂をフォトマスクを介して露光した後に、現像することにより、ブラックマトリクス16を厚さ1.5μm程度に形成する。
まず、例えば、ディスペンサを用いて、上記対向基板作製工程で作製された対向基板30に、紫外線硬化及び熱硬化併用型樹脂などにより構成されたシール材を枠状に描画する。
例えば、各ゲート線1aにバイアス電圧-10V、周期16.7msec、パルス幅50μsecの+15Vのパルス電圧のゲート検査信号を入力して全てのTFT5をオン状態にする。さらに、各ソース線3に16.7msec毎に極性が反転する±2Vの電位のソース検査信号を入力して、各TFT5のソース電極3a及びドレイン電極3bを介して画素電極6に±2Vに対応した電荷を書き込む。それと同時に、共通電極18に直流で-1Vの電位の共通電極検査信号を入力する。
上記断線検出工程においてX部で断線が検出されたソース線3の図1中上端部と第1配線経路Wa及び第2配線経路Wbとの交差部分Ma及びMb(図1参照)、並びにX部で断線が検出されたソース線3の図1中下端部と第3配線経路Wcとの交差部分Mc(図1参照)に、図4に示すように、YAGレーザなどから発振されたレーザ光Lを絶縁基板10a側からそれぞれ照射することにより、交差部分Ma(並びにMb及びMc)のゲート絶縁膜11にコンタクトホール11cを形成して、各配線を形成するメタル層を溶融させて、断線したソース線3の図1中上端部と第1配線経路Wa及び第2配線経路Wbとを導通させると共に、断線したソース線3の図1中下端部と第3配線経路Wcとを導通させる。
上記断線検出工程においてX部で断線が検出されたソース線3の図1中上端部の交差部分Ma及びMbの間のY部にYAGレーザなどから発振されたレーザ光を絶縁基板10a側から照射することにより、ソースドライバ44aからのソース信号が断線したソース線3の図1中上側に直接供給されないように、断線したソース線3の図1中上端部をY部で切断する。
予め、プリント基板45aに、3つのフィルム基板41aをACFを介してそれぞれ貼り付けておき、上記断線検出工程で断線が検出されなかった液晶表示パネル40a、又は上記配線接続工程及び配線切断工程を経て断線が修正された液晶表示パネル40aに、各フィルム基板41aをACFを介してそれぞれ貼り付ける。
図5は、本実施形態の液晶表示装置50bの平面図である。なお、以下の各実施形態において、図1~図4と同じ部分については同じ符号を付して、その詳細な説明を省略する。
図6は、本実施形態の液晶表示装置50cの平面図である。そして、図7は、液晶表示装置50cを構成する負荷容量部Cの平面図であり、図8は、他の負荷容量部Cの平面図である。また、図9は、液晶表示装置50cを構成する負荷抵抗部Rの平面図であり、図10は、他の負荷抵抗部Rの平面図である。さらに、図11は、液晶表示装置50cを構成する負荷抵抗容量部Eの平面図である。
図12は、本実施形態の液晶表示装置50dの平面図である。
図13は、本実施形態の液晶表示装置50eの平面図である。
上記各実施形態では、液晶表示パネルを作製した後に、断線を修正する液晶表示装置及びその製造方法を例示したが、本発明は、上記実施形態1の液晶表示パネル40aを構成するアクティブマトリクス基板20aを作製した後に、断線を修正してもよい。この場合、アクティブマトリクス基板は、対向基板との間に液晶層を封入することにより液晶表示装置を構成してもよく、また、例えば、X線センサーなどのように、各画素電極に帯電する電荷を読み取るセンサー基板を構成してもよい。なお、後者の場合には、液晶層や液晶層を封入しておくための対向基板が不要である。
Ba~Bc ブロック
C 負荷容量部
E 負荷抵抗容量部
L レーザ光
R 負荷抵抗部
Wa 第1配線経路
Wb 第2配線経路
Wc 第3配線経路
3 ソース線(表示用配線)
20a アクティブマトリクス基板
40a~40e 液晶表示パネル
41a,41b,41d フィルム基板
44a,44b,44d,40e ソースドライバ(駆動回路)
45a,45b プリント基板
50a~50e 液晶表示装置
Claims (16)
- 互いに平行に延びるように複数の表示用配線が設けられた表示パネルと、
上記各表示用配線の一方の端部側に設けられ、該各表示用配線に接続された駆動回路と、
上記各表示用配線の一方の端部に絶縁状態で交差するようにそれぞれ設けられた第1配線経路及び第2配線経路と、
上記各表示用配線の他方の端部に絶縁状態で交差すると共に、上記第1配線経路及び第2配線経路にそれぞれ接続された第3配線経路とを備え、
上記第1配線経路及び第2配線経路を含む経路、並びに上記第1配線経路及び第3配線経路を含む経路には、増幅回路がそれぞれ設けられていることを特徴とする表示装置。 - 請求項1に記載された表示装置において、
上記増幅回路は、上記第1配線経路に設けられていることを特徴とする表示装置。 - 請求項1に記載された表示装置において、
上記増幅回路は、上記第2配線経路及び第3配線経路にそれぞれ設けられていることを特徴とする表示装置。 - 請求項1乃至3の何れか1つに記載された表示装置において、
上記増幅回路は、上記駆動回路に内蔵されていることを特徴とする表示装置。 - 請求項1乃至4の何れか1つに記載された表示装置において、
上記複数の表示用配線は、隣り合う複数本毎に複数のブロックに区分され、
上記駆動回路は、上記各ブロック毎に複数設けられていることを特徴とする表示装置。 - 請求項1乃至4の何れか1つに記載された表示装置において、
上記駆動回路を1つ有していることを特徴とする表示装置。 - 請求項1乃至6の何れか1つに記載された表示装置において、
上記第1配線経路、第2配線経路及び第3配線経路の少なくとも1つには、上記駆動回路からの表示用信号の波形を調整可能な負荷容量及び負荷抵抗の少なくとも一方が接続されていることを特徴とする表示装置。 - 請求項1乃至6の何れか1つに記載された表示装置において、
上記第1配線経路、第2配線経路及び第3配線経路の少なくとも1つには、上記駆動回路からの表示用信号の波形を調整可能な負荷容量及び負荷抵抗の少なくとも一方が接続可能に設けられていることを特徴とする表示装置。 - 請求項1乃至8の何れか1つに記載された表示装置において、
上記駆動回路は、上記表示パネルに設けられ、
上記表示パネルには、フィルム基板が取り付けられ、
上記第1配線経路、第2配線経路及び第3配線経路の少なくとも1つは、上記フィルム基板を経由するように設けられていることを特徴とする表示装置。 - 請求項1乃至8の何れか1つに記載された表示装置において、
上記表示パネルには、フィルム基板が取り付けられ、
上記駆動回路は、上記フィルム基板に設けられ、
上記フィルム基板には、プリント基板が取り付けられ、
上記第1配線経路、第2配線経路及び第3配線経路の少なくとも1つは、上記フィルム基板及びプリント基板を経由するように設けられていることを特徴とする表示装置。 - 請求項1乃至8の何れか1つに記載された表示装置において、
上記駆動回路、第1配線経路、第2配線経路及び第3配線経路は、上記表示パネルに設けられていることを特徴とする表示装置。 - 請求項1乃至11の何れか1つに記載された表示装置において、
上記第1配線経路及び上記第2配線経路は、上記各表示用配線を切断可能に互いに離間するように設けられていることを特徴とする表示装置。 - 請求項1乃至12の何れか1つに記載された表示装置において、
上記表示パネルは、互いに交差するように設けられた複数のゲート線及び複数のソース線と、該複数のゲート線及び複数のソース線の層間に設けられた絶縁膜とを有し、
上記各表示用配線と、上記第1配線経路、第2配線経路及び第3配線経路とは、上記絶縁膜にコンタクトホールを形成することにより、接続可能に設けられていることを特徴とする表示装置。 - 互いに平行に延びるように複数の表示用配線が設けられた表示パネルと、
上記各表示用配線の一方の端部側に設けられ、該各表示用配線に接続された駆動回路と、
上記各表示用配線の一方の端部に絶縁状態で交差するようにそれぞれ設けられた第1配線経路及び第2配線経路と、
上記各表示用配線の他方の端部に絶縁状態で交差すると共に、上記第1配線経路及び第2配線経路にそれぞれ接続された第3配線経路とを備え、
上記第1配線経路及び第2配線経路を含む経路、並びに上記第1配線経路及び第3配線経路を含む経路には、増幅回路がそれぞれ設けられた表示装置を製造する方法であって、
上記各表示用配線の断線の存在を検出する断線検出工程と、
上記断線検出工程で断線が検出された表示用配線の一方の端部と上記第1配線経路及び第2配線経路とを接続し、該表示用配線の他方の端部と上記第3配線経路とを接続する配線接続工程と、
上記断線検出工程で断線が検出された表示用配線の一方側に上記駆動回路からの表示用信号が直接供給されないように、該表示用配線の一方の端部を切断する配線切断工程とを備えることを特徴とする表示装置の製造方法。 - 請求項14に記載された表示装置の製造方法において、
上記配線接続工程及び配線切断工程は、レーザ光の照射により行われることを特徴とする表示装置の製造方法。 - 互いに平行に延びるように設けられた複数の表示用配線と、
上記各表示用配線の一方の端部側に設けられ、該各表示用配線に接続された駆動回路と、
上記各表示用配線の一方の端部に絶縁状態で交差するようにそれぞれ設けられた第1配線経路及び第2配線経路と、
上記各表示用配線の他方の端部に絶縁状態で交差すると共に、上記第1配線経路及び第2配線経路にそれぞれ接続された第3配線経路とを備え、
上記第1配線経路及び第2配線経路を含む経路、並びに上記第1配線経路及び第3配線経路を含む経路には、増幅回路がそれぞれ設けられていることを特徴とするアクティブマトリクス基板。
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JP2010550349A JP5216874B2 (ja) | 2009-02-13 | 2009-10-14 | 表示装置及びその製造方法、並びにアクティブマトリクス基板 |
CN2009801558135A CN102301408B (zh) | 2009-02-13 | 2009-10-14 | 显示装置及其制造方法、以及有源矩阵基板 |
RU2011137572/28A RU2479001C1 (ru) | 2009-02-13 | 2009-10-14 | Устройство дисплея, способ его изготовления и подложка активной матрицы |
BRPI0924626A BRPI0924626A2 (pt) | 2009-02-13 | 2009-10-14 | dispositivo de exibição, método para produção do mesmo, substrato de matriz ativa. |
US13/148,791 US20110310343A1 (en) | 2009-02-13 | 2009-10-14 | Display device, method for manufacturing the same, and active matrix substrate |
EP09839962.9A EP2398007A4 (en) | 2009-02-13 | 2009-10-14 | DISPLAY DEVICE, METHOD FOR THE PRODUCTION THEREOF AND ACTIVE MATRIX SUBSTRATE |
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JP7503111B2 (ja) | 2022-10-20 | 2024-06-19 | シャープディスプレイテクノロジー株式会社 | 表示パネル、表示パネルの欠陥修正方法および表示パネルの製造方法 |
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JP6138480B2 (ja) * | 2012-12-20 | 2017-05-31 | 株式会社ジャパンディスプレイ | 表示装置 |
CN105607367B (zh) * | 2016-01-04 | 2017-12-15 | 重庆京东方光电科技有限公司 | 显示面板、显示装置以及断线修复方法 |
WO2017126115A1 (ja) * | 2016-01-22 | 2017-07-27 | 堺ディスプレイプロダクト株式会社 | 液晶表示装置 |
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2009
- 2009-10-14 CN CN2009801558135A patent/CN102301408B/zh not_active Expired - Fee Related
- 2009-10-14 JP JP2010550349A patent/JP5216874B2/ja not_active Expired - Fee Related
- 2009-10-14 US US13/148,791 patent/US20110310343A1/en not_active Abandoned
- 2009-10-14 BR BRPI0924626A patent/BRPI0924626A2/pt not_active IP Right Cessation
- 2009-10-14 RU RU2011137572/28A patent/RU2479001C1/ru not_active IP Right Cessation
- 2009-10-14 WO PCT/JP2009/005343 patent/WO2010092639A1/ja active Application Filing
- 2009-10-14 EP EP09839962.9A patent/EP2398007A4/en not_active Withdrawn
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JPH11160677A (ja) | 1997-12-01 | 1999-06-18 | Hoshiden Philips Display Kk | 液晶表示装置 |
JP2000105576A (ja) | 1998-09-29 | 2000-04-11 | Matsushita Electric Ind Co Ltd | 液晶表示装置および信号線駆動用lsi素子 |
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JP7503111B2 (ja) | 2022-10-20 | 2024-06-19 | シャープディスプレイテクノロジー株式会社 | 表示パネル、表示パネルの欠陥修正方法および表示パネルの製造方法 |
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EP2398007A4 (en) | 2014-09-10 |
RU2011137572A (ru) | 2013-03-20 |
CN102301408A (zh) | 2011-12-28 |
BRPI0924626A2 (pt) | 2016-03-01 |
JPWO2010092639A1 (ja) | 2012-08-16 |
RU2479001C1 (ru) | 2013-04-10 |
US20110310343A1 (en) | 2011-12-22 |
EP2398007A1 (en) | 2011-12-21 |
CN102301408B (zh) | 2013-09-25 |
JP5216874B2 (ja) | 2013-06-19 |
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