WO2007135893A1 - 表示装置 - Google Patents
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- WO2007135893A1 WO2007135893A1 PCT/JP2007/059933 JP2007059933W WO2007135893A1 WO 2007135893 A1 WO2007135893 A1 WO 2007135893A1 JP 2007059933 W JP2007059933 W JP 2007059933W WO 2007135893 A1 WO2007135893 A1 WO 2007135893A1
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- pixel region
- wiring
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
-
- 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
- G02F1/1343—Electrodes
-
- 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
- G02F1/13456—Cell terminals located on one side of the display only
-
- 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
- G02F1/136286—Wiring, e.g. gate line, drain line
Definitions
- the present invention relates to an active matrix display device, and more particularly to a display device in which a drive circuit (driver) is mounted on one side of an active matrix substrate.
- a drive circuit driver
- an active matrix substrate in which scanning lines and signal lines are formed in a matrix on a substrate and a driving element such as a TFT (Thin Film Transistor) is formed at the intersection of these signal lines is a liquid crystal display device or the like.
- a scanning line driving circuit 91 is provided at one end of scanning lines G arranged in parallel to each other, and is orthogonal to the scanning lines G and parallel to each other.
- a signal line driving circuit 92 is provided at one end of the signal line S disposed in the circuit. That is, in the conventional active matrix substrate 90 shown in FIG. 17, the scanning line driving circuit 91 and the signal line driving circuit 92 are provided on two adjacent sides in the peripheral region 94 of the pixel region 93, respectively.
- FIG. 18 a configuration in which a driving circuit 98 in which a scanning line driving circuit and a signal line driving circuit are integrated is mounted on only one side of an active matrix substrate 95 is disclosed in 2003-241217 (see FIG. 4).
- FIG. 3 and the like in the same document also show a configuration in which a scanning line driving circuit is arranged on one side of the active matrix substrate 95 and signal line driving circuits are arranged on both sides of the scanning line driving circuit.
- the conventional active matrix substrate shown in Fig. 18 is arranged parallel to each other.
- Each of the plurality of signal lines S is alternately drawn out on both sides of the pixel region 96 and connected to the drive circuit 98, whereby the width of the frame region 97 on both sides in the extending direction of the signal line S is made uniform. Yes.
- the conventional configuration as shown in FIG. 18 is particularly suitably employed in a display device for a small electronic device such as a mobile phone, a digital camera, or a PDA (Personal Digital Assistant).
- a small electronic device such as a mobile phone, a digital camera, or a PDA (Personal Digital Assistant).
- the number of signal lines wired in the frame area is steadily increasing.
- the high-definition panel has a problem that the frame width cannot be reduced due to restrictions on the wiring layout of the active matrix substrate in order to improve the yield.
- a common electrode (a common electrode) is formed on the entire surface of the counter substrate facing the active matrix substrate.
- the common electrode is connected to an active matrix substrate or a driving circuit (not shown in FIG. 18) provided in an FPC (Flexible Printed Circuit) connected to the active matrix substrate through a common wiring 101.
- a predetermined voltage (common voltage V) is applied.
- the common wiring 101 and the common electrode of the counter substrate are connected to the electric com
- a contact 102 (referred to as a “common transition”) 102 is provided on the active matrix substrate 95.
- the common transition 102 is formed of a conductive material such as carbon paste or gold, and has a cross-sectional area of about 500 m 2 to about Lmm 2 .
- the common transition 102 is arranged in a region where no lead-out wiring is provided in the frame region 97 of the active matrix substrate 95.
- the common wiring 101 it is necessary to route the common wiring 101 along the periphery of the pixel region 96 until the driving circuit side force reaches the common transition 102.
- the common wiring 101 must have a low resistance so that display defects such as unevenness and crosstalk due to signal delay of the common electrode do not occur. For this reason, the common wiring 101 needs to have a sufficient wiring width. Therefore, in the conventional active matrix substrate as shown in FIG. 18, not only the area around the signal line S but also the area around the common wiring 101 having a sufficient width must be secured around the pixel area 96. Therefore, there was a problem that the area of the frame area could not be reduced.
- the present invention provides a display device in which a drive circuit is arranged on one side of an active matrix substrate and the common voltage V is supplied to the counter substrate side through a common transition of the active matrix substrate.
- the purpose is to reduce the area of the frame area without reducing the yield.
- a first display device is a display device including an active matrix substrate and a counter substrate, wherein the active matrix substrate is arranged in a matrix.
- a bus line driving circuit that is disposed outside the pixel area on one side of the active matrix substrate and supplies a scanning signal and a data signal to the scanning line and the signal line, respectively.
- a common drive circuit for generating a common signal to be supplied to the common electrode of the counter substrate, wherein the active matrix substrate is the active matrix substrate.
- the pixel region is compared with the conventional configuration in which the entire common wiring is disposed outside the pixel region.
- the width of the common wiring arranged outside can be reduced, or the common wiring outside the pixel region can be eliminated.
- the width of the frame area is smaller than the conventional configuration. Since the size can be reduced, a display device can be provided in which the area of the frame region without reducing the yield is reduced.
- the common wiring force arranged in the dummy pixel region is electrically connected to the auxiliary capacitance wiring in the pixel region.
- the common wiring force arranged in the dummy pixel region is electrically independent of the auxiliary capacitance wiring in the pixel region.
- a dummy auxiliary capacitance line parallel to the auxiliary capacitance line in the pixel region is further arranged in the dummy pixel region.
- a width of a crossing portion with the signal line is smaller than a main wiring width of the common wiring in the auxiliary capacitance wiring.
- the terminal portion of the signal line opposite to the signal input side is arranged so as not to cross the dummy auxiliary capacitance wiring.
- an auxiliary capacitor is formed between the pixel electrode in the actual pixel region and a scanning line adjacent to the scanning line that drives the pixel electrode.
- the width of the intersection with the signal line in the common wiring in the dummy pixel region is smaller than the main wiring width of the common wiring.
- the end of the signal line opposite to the signal input side is arranged so as not to cross the common wiring of the dummy pixel region. .
- the first display device further includes a shielding member that visually shields the dummy pixel region.
- a liquid crystal is provided between the active matrix substrate and the counter substrate.
- a second display device is a display device including a display medium between an active matrix substrate and a counter substrate, wherein the active matrix substrate force matrix A scanning pixel and a signal line arranged in a line, an actual pixel region including an effective pixel that performs display according to a data signal supplied by the signal line, and A pixel region including an impurity trapping region that is located closer to the panel end than the actual pixel region and in which a trap wiring for electrically trapping impurities in the display medium is formed; A bus line driving circuit that is disposed outside the pixel region on one side of the active matrix substrate and supplies a scanning signal and a data signal to the scanning line and the signal line, respectively, and a common signal supplied to the common electrode of the counter substrate A common drive circuit for generating the active matrix substrate, wherein the active matrix substrate is provided on a side of the active matrix substrate opposite to the side where the bus line drive circuit is disposed, and the common signal is supplied to the common electrode of the
- the width of the intersection with the signal line is smaller than the main width of the common line in the common wiring of the impurity trapping region. I like it.
- the end of the signal line opposite to the signal input side is arranged so as not to cross the common wiring of the impurity trapping region.
- the display medium is preferably a liquid crystal.
- the drive circuit is arranged on one side of the active matrix substrate and the common voltage V is supplied to the counter substrate side via the common transition of the active matrix substrate. Reduce the area of the frame area without reducing the yield can do.
- FIG. 1 is a plan view showing a schematic configuration of an active matrix substrate 10 according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view showing the vicinity of part A in FIG.
- FIG. 3 is an equivalent circuit diagram of a dummy picture element region and an actual picture element region in the vicinity thereof.
- FIG. 4 is a diagram showing a cross-sectional structure of a liquid crystal display device that works according to the present embodiment, (a) is a diagram showing a position of a cross section in a plan view, and (b) is a diagram showing an A shown in (a). —Cross sectional view showing the configuration of the liquid crystal display device in section A ′, (c) is a sectional view showing the configuration of the liquid crystal display device in section BB ′ shown in (a).
- FIG. 5 is a diagram for explaining the effect of the active matrix substrate 10 according to the present embodiment.
- FIG. 6 is a plan view showing a schematic configuration of an active matrix substrate 20 of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 7 is an enlarged plan view showing the vicinity of part A in FIG.
- FIG. 8 is an active matrix substrate for a liquid crystal display device according to an embodiment of the present invention.
- FIG. 30 is a plan view showing a schematic configuration of 30.
- FIG. 30 is a plan view showing a schematic configuration of 30.
- FIG. 9 is an enlarged plan view showing the vicinity of part A in FIG.
- FIG. 10 is a plan view showing a schematic configuration of an active matrix substrate 40 of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 11 is an enlarged plan view showing the vicinity of part A in FIG.
- FIG. 12 is an equivalent circuit diagram of a dummy pixel region and an actual pixel region in the vicinity thereof.
- FIG. 13 is a plan view showing a schematic configuration of an active matrix substrate 50 of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 14 is an enlarged plan view showing the vicinity of part A in FIG.
- FIG. 15 is a diagram showing a cross-sectional structure of a liquid crystal display device that is useful in the present embodiment, (a) is a diagram showing the position of the cross section in a plan view, and (b) is a diagram showing an A shown in (a).
- (c) is the liquid crystal display device in the BB ′ cross section shown in (a) It is sectional drawing which shows the structure of a device.
- FIG. 16 is a plan view showing a configuration of an active matrix substrate according to a modification of the embodiment of the present invention.
- FIG. 17 is a plan view showing a configuration example of an active matrix substrate included in a conventional display device.
- FIG. 18 is a plan view showing a configuration example of an active matrix substrate included in a conventional display device.
- the drawings referred to below show main constituent members for explaining the present invention, among the constituent members of each part of the display device according to the embodiment of the present invention. This is shown in a simplified or omitted form. Therefore, the display device according to the present invention can include arbitrary components not shown in the drawings referred to in this specification. In addition, the dimensions of the members in each drawing do not necessarily faithfully represent the actual dimensions of the constituent members and the dimensional ratios of the members. Furthermore, in the following embodiment, a mode in which the display device of the present invention is implemented as a liquid crystal display device is illustrated, but the present invention is not limited to the liquid crystal display device.
- FIG. 1 is a plan view showing a schematic configuration of an active matrix substrate 10 according to an embodiment of the present invention.
- FIG. 2 is an enlarged plan view showing the vicinity of part A in FIG.
- the active matrix substrate 10 which is useful in the present embodiment is used for a display device such as a liquid crystal display device.
- the active matrix substrate 10 is arranged on a translucent substrate 11 made of glass or the like so that n scanning lines G and m signal lines S are orthogonal to each other.
- Each pixel has a pixel region 12 having a TFT and a pixel electrode (V, not shown). Note that in FIGS. 1 and 2 and other drawings referred to in this specification, the number of scanning lines G and signal lines S is omitted.
- the drive element is not limited to TFT.
- a region surrounding the rectangular pixel region 12 in a frame shape and overlapping with the counter substrate is referred to as a frame region 13.
- Facti A bus line driving circuit 16 that integrates a scanning line driving circuit for driving the scanning line G and a signal line driving circuit for driving the signal line S in one chip on one side of the submatrix substrate 10 is a COG (Chip On Glass ) Method.
- a bus line driving circuit is formed directly on the active matrix substrate 10.
- common transitions 15 a and 15 b are provided in the vicinity of both ends of the side opposite to the side on which the bus line driving circuit 16 is disposed.
- the common transitions 15a and 15b are formed of a conductive material such as carbon paste or gold, and generally have a cross-sectional area of about 500 ⁇ m 2 -lmm 2 . Note that the number of common transitions is not limited to two.
- the force is connected to the nosline drive circuit 16 through the upper side in FIG. 2 in the frame region 13, and the lower side in FIG. 2 is connected to the S, S, S,, ', iS frame region 13 in FIG.
- the signal lines S are distributed to the two sides facing each other in the frame region 13 by about half of them, so that the widths of the two sides of the frame region 13 can be made uniform.
- m signal lines S 1, S 2, S 3, S 5,... are alternately arranged on two opposite sides in the frame region 13.
- the signal lines S to S are connected to the frame region 13.
- the signal lines s to s may be drawn to one side and the signal lines s to s may be drawn to the opposite side.
- the signal lines S are distributed in the frame region 13 so as to be divided by about half of the two sides facing each other!
- the scanning line G includes dummy scanning lines G 1, G 2 and G in addition to the n scanning lines G to G to which a scanning signal for turning on the TFT gate is applied at a predetermined timing.
- dummy scanning lines G 1, G 2 and G in addition to the n scanning lines G to G to which a scanning signal for turning on the TFT gate is applied at a predetermined timing.
- the configuration with one dummy scanning line G is shown as an example, but the number of dummy scanning lines is It is not limited to.
- the dummy scanning lines G 1, G 2, G 3 have the same signal as the scanning signal of the display area dl d2 d3
- a signal that does not function as a scanning signal that is, a signal power that does not reach a high potential for turning on the gate of the TFT, is applied from the bus line driving circuit 16.
- dummy scanning lines G, G, G ⁇ always apply the same potential as the low potential of the scanning signal dl d2 d3
- FIG. 2 is an enlarged plan view showing the vicinity of part A in FIG. As shown in FIG. 2, the pixel electrodes 17 and dl d2 in the actual picture element region are also provided between the dummy scanning line G and the dummy scanning line G.
- a pixel electrode 17d and a TFT 18d are provided.
- the gate electrode of TFT18d is connected to the dummy scanning line G.
- the drain electrode of TFT18d is the pixel electrode d2
- T d3 dl is applied to the dummy scanning line G.
- the pixel electrode 17d connected via the FT 18d constitutes a picture element (dummy picture element) that does not contribute to display.
- An area where dummy picture elements that do not contribute to display are formed is referred to as a “dummy picture element area”.
- a region where a picture element (effective pixel) contributing to display is formed is referred to as a “real picture element region”.
- a liquid crystal display device that performs color display using color filters such as RGB three colors is illustrated, and “picture element” is a pixel corresponding to a color filter of one color.
- Means. “Dummy pixel area” and “dummy picture element area”, and “real pixel area” and “real picture element area” have the same meaning. Since the dummy picture element region does not contribute to the display as described above, it is preferable that the dummy picture element region is hidden by a black matrix provided on the counter substrate, or a light shielding plate attached to the surface of the active matrix substrate or the counter substrate.
- FIG. 3 is an equivalent circuit diagram of the dummy picture element area and the actual picture element area in the vicinity thereof. According to this configuration, since the dummy scanning lines G and G are provided outside the real picture element region, the real picture dl d2
- the magnitude gd of the parasitic capacitance C between the pixel electrode and the gate bus line is equalized, and the bright line at the end of the pixel region is prevented. Further, by providing the dummy scanning line G outside the scanning line G, the impurities d3 in the display medium moved by the scanning signal
- Common wires 14a, 14b, 14c, and 14d are formed over the four sides of the frame region 13 so as to surround the pixel region 12.
- As the material of the common wirings 14a, 14b, 14c, 14d for example, aluminum, molybdenum, tantalum, or alloys thereof are used.
- the common wires 14a and 14b are formed on two sides facing each other in the frame region 13 in parallel with the scanning line G.
- the common wires 14c and 14d are formed on two sides opposite to each other in the frame region 13 in parallel with the signal line S.
- the above-described common transition 15a is provided so as to be electrically connected to a connection portion between the common wiring 14a and the common wiring 14c. Further, the above-described common transition 15b is provided so as to be electrically connected to a connection portion between the common wiring 14b and the common wiring 14c.
- the common wires 14a, 14b, 14c and the common wire 14d are formed in different layers on the active matrix substrate 10. Therefore, as shown in FIG. 2, for example, the common wiring 14a and the common wiring 14d are electrically connected via a contact hole 19 formed in an insulating film between these wirings.
- the active matrix substrate 10 of the present embodiment has an auxiliary capacitor C formed in parallel with the liquid crystal capacitor C. Therefore, the active matrix substrate 10 is
- each of the picture elements in the real picture element region has auxiliary capacity wirings CS, CS,... That form a capacity (auxiliary capacity C) with the pixel electrode 18.
- auxiliary capacity C capacity
- Quantity wiring CS, CS, ... are common wiring 14a
- the IB 1 2 shape is not limited to the example shown in FIG.
- one end of the auxiliary line CS, CS As shown in FIG. 2, one end of the auxiliary line CS, CS,.
- auxiliary capacitance lines CS 1, CS 2,... are held at the same potential as the common lines 14c and 14d.
- the common wires 14e, 14e, 14f is formed in addition to the common wires 14a to 14d formed in the frame region 13.
- the common wiring 14e is parallel to the common wiring 14a and is formed in the dummy pixel region between the dummy scanning line G and the dummy scanning line G. It is.
- the common wiring 14f is parallel to the common wiring 14a and is formed in a dummy picture element region between the dummy scanning line G and the d3 scanning line G. Both ends of the common wiring 14e are electrically connected to the common wiring 14c and the common wiring 14d, respectively.
- Both ends of the common wiring 14f are also electrically connected to the common wiring 14c and the common wiring 14d, respectively.
- the common wirings 14e and 14f are formed in the same layer as the common wirings 14a, 14b, and 14c, and are formed in a different layer from the common wiring 14d. Therefore, as shown in FIG. 2, the common wiring 14e and the common wiring 14d are electrically connected through the contact hole 19 formed in the insulating film of these wirings. The same applies to the electrical connection between the force common wiring 14f and the common wiring 14d (not shown in FIG. 2).
- FIG. 4 is a diagram showing a cross-sectional structure of the liquid crystal display device that works according to the present embodiment, (a) is a diagram showing the position of the cross section in the plan view, and (b) is an A diagram shown in (a). —Cross-sectional view showing the configuration of the liquid crystal display device in the A ′ cross-section, (c) is a cross-sectional view showing the configuration of the liquid crystal display device in the BB ′ cross-section shown in (a). In FIG. 4 (b) and FIG. 4 (c), the alignment film is not shown. 4A to 4C are the same in the cross-sectional structure of the force common wiring 14f showing the cross-sectional structure of the common wiring 14e.
- the liquid crystal 62 is sandwiched between the active matrix substrate 10 and the counter substrate 60.
- the surface of the translucent substrate 11 has the common wiring 14e, the first insulating film 63, the signal line S, the second insulating film 64, and the alignment film. (Not shown) are formed in this order.
- a black matrix 66, a color filter 65, a common electrode 66, and an alignment film are formed on the surface of the translucent substrate 61.
- the widths of the common wirings 14e and 14f are arbitrary as long as they are within the dummy picture element region, but are preferably as large as possible. As the widths of the common wirings 14e and 14f in the dummy picture element region are increased, the widths of the common wirings 14a and 14b in the frame region 13 can be reduced, and as a result, the width of the frame region 13 can be reduced.
- the common voltage V supplied to the input terminals 14g and 14h in the common wires 14a and 14b is com through the common wires 14a and 14b.
- the common wirings 14e and 14f are connected to a part of the common wires 14d and 14c, the input terminals 14g and 14h of the common wires 14a and 14b serving as the supply terminals for the common voltage V, and the com com
- the width of the common wirings 14a and 14b in the frame region 13 can be reduced as the line width of the common wirings 14e and 14f is increased to reduce the wiring resistance. If the width of the dummy picture element region is sufficient and the line widths of the common wires 14e and 14f can be made sufficiently large, the common wire in the frame region 13 can be completely eliminated.
- FIG. 5 is a diagram for explaining the effect of the active matrix substrate 10 that is effective in the present embodiment.
- FIG. 5A shows a conventional configuration in which common wiring is arranged only in the frame region as shown in FIG.
- FIGS. 3A and 3B are plan views showing a configuration related to the present embodiment shown in FIGS. 1 and 2 on a scale capable of comparing the widths of the frame regions, respectively.
- the common wiring is also provided to the dummy pixel region in the pixel region 12.
- the width of the frame region 13 can be made smaller than the width of the frame region 97 in the conventional configuration.
- FIG. 6 is a plan view showing a schematic configuration of the active matrix substrate 20 of the liquid crystal display device according to the embodiment of the present invention.
- FIG. 7 is an enlarged plan view showing the vicinity of part A in FIG.
- the same referential mark as 1st Embodiment is attached, and the detailed description is abbreviate
- the active matrix substrate 20 that is useful in the present embodiment is provided with common wirings 14 a and 14 b in parallel to the signal lines S in the frame region 13.
- This is the same as the first embodiment in that the common wirings 14e and 14f are provided in the dummy picture element area, and the width of the frame area 13 can be reduced.
- the common wirings 14c and 14d are connected to the common wiring 14a and the common wiring.
- Wire 14e is connected to form an electrically closed loop, and common wires 14c and 14d are connected to COM.
- the second embodiment is different from the first embodiment in that the closed wiring 14b and the common wiring 14f are connected to form an electrically closed loop.
- the common wiring is connected to one end of the auxiliary capacitance wirings CS 1, CS 3,.
- the second embodiment is also different from the first embodiment in that a voltage is supplied via the auxiliary capacitance wiring 21a (which is electrically connected!). Therefore, a voltage different from the common voltage V can be supplied to the auxiliary capacitance line CS.
- FIG. 7 shows that a voltage is supplied via the auxiliary capacitance wiring 21a (which is electrically connected!). Therefore, a voltage different from the common voltage V can be supplied to the auxiliary capacitance line CS.
- the auxiliary capacitance lines CS, CS, CS are connected to the other ends of the lines CS, CS,.
- the display device according to the second embodiment is implemented as a normally white liquid crystal display device, a voltage different from the common voltage V is supplied to the auxiliary capacitor wiring CS.
- FIG. 8 is a plan view showing a schematic configuration of the active matrix substrate 30 of the liquid crystal display device according to the embodiment of the present invention.
- FIG. 9 is an enlarged plan view showing the vicinity of part A in FIG.
- the same referential mark as those embodiment is attached, and the detailed description is abbreviate
- the active matrix substrate 30 that works in the present embodiment is provided with common wirings 14 a and 14 b in parallel to the signal lines S in the frame region 13. This is the same as in the first and second embodiments in that the common wirings 14e and 14f are provided in the dummy picture element region, and the width of the frame region 13 can be reduced.
- the common wires 14c and 14d are connected to the common wire 14a and the common wire.
- 14e is connected to form an electrically closed loop, and common wires 14c and 14d are common.
- This embodiment differs from the second embodiment in that in the pixel region 12, the auxiliary capacitance wiring CS is arranged together with the common wirings 14 e and 14 f in the dummy picture element region. Yes. In this way, by arranging the auxiliary capacitance wiring CS in the dummy pixel area, the auxiliary capacitance d
- the resistance of the entire wiring can be reduced and applied to the auxiliary capacitance wiring CS, CS, ...
- the voltage drop can be prevented.
- the pixel electrode 17d and the TFT 18d in the dummy picture element region are not essential. That is, the pixel electrode may not be formed in the dummy picture element region.
- the dummy pixel region may not have a TFT, and the pixel electrode 17d of the dummy pixel region may be connected to at least one of the auxiliary capacitance wiring CS and the common wirings 14e and 14f.
- FIG. 10 is a plan view showing a schematic configuration of an active matrix substrate 40 of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 11 is an enlarged plan view showing the vicinity of part A in FIG. Note that components similar to those described in the above embodiments are denoted by the same reference numerals as those of those embodiments, and detailed description thereof is omitted.
- the active matrix substrate 40 that is effective in the present embodiment is provided with common wirings 14a and 14b in parallel to the signal line S in the frame region 13, and the pixel region 12 Similar to the first and second embodiments in that the common wirings 14e and 14f are provided in the dummy picture element region, there is an effect that the width of the frame region 13 can be reduced.
- the common wires 14c and 14d are connected to the common wire 14a and the common wire.
- 14e is connected to form an electrically closed loop, and common wires 14c and 14d are common.
- FIG. 12 is an equivalent circuit diagram of the dummy picture element area and the actual picture element area in the vicinity thereof.
- the auxiliary capacitor C is formed by using the scanning lines of adjacent pixels. For this reason, the active matrix that works with this embodiment
- the task substrate 40 does not include the auxiliary capacitance wiring as in the first and second embodiments.
- each of the pixel electrode 17 or the pixel electrode 17d in each of the real pixel region and the dummy pixel region A storage capacitor C is formed with the scanning line one level above. For example, connected to scan line G
- the pixel electrode 17 of the picture element CS 1 is connected to the dummy scanning line G that is one level higher than the scanning line G.
- FIG. 13 is a plan view showing a schematic configuration of an active matrix substrate 50 of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 14 is an enlarged plan view showing the vicinity of part A in FIG. Note that components similar to those described in the above embodiments are denoted by the same reference numerals as those of those embodiments, and detailed description thereof is omitted.
- the active matrix substrate 50 that works in the present embodiment does not have a dummy picture element region. Instead, as shown in FIG. 13 and FIG. 14, the active matrix substrate 50 is arranged on the outer side (the frame region side) of the scanning line G and the scanning line G.
- Trap wirings 51a and 5 lb for capturing ionic impurities in the liquid crystal are provided outside 1 n (the frame region side).
- the trap wirings 51a and 51b have a function of capturing ionic impurities when a predetermined voltage (for example, ⁇ 5 V) is applied. This prevents display unevenness due to diffusion of ionic impurities into the actual picture element region.
- the trap wirings 51a and 51b are formed of the same transparent electrode material (ITO or IZO) as the pixel electrode, the same wiring material as the scanning line G or signal line S (for example, A or Mo), and the like.
- FIG. 15 is a diagram showing a cross-sectional structure of a liquid crystal display device that works according to the present embodiment, where (a) is a diagram showing the position of the cross section in the plan view, and (b) is AA ′ shown in (a). Sectional drawing which shows the structure of the liquid crystal display device in a cross section, (c) is sectional drawing which shows the structure of the liquid crystal display device in the BB 'cross section shown to (a). In FIG. 15 (b) and FIG. 15 (c), the orientation film is not shown.
- the liquid crystal display device sandwiches the liquid crystal 62 between the active matrix substrate 50 and the counter substrate 60. Yes.
- the surface of the transparent substrate 11 includes the common wiring 14e, the first insulating film 63, the signal line S, the second insulating film 64, the trap wiring 51a, An alignment film (not shown) is formed in this order.
- a black matrix 66, a color filter 65, a common electrode 66, and an alignment film are formed on the surface of the translucent substrate 61.
- the black matrix 66 of the counter substrate 60 is arranged so as to hide the trap wiring 5 la.
- the common wiring 14e is formed on the surface of the transparent substrate 11 of the active matrix substrate 50, and the first insulating film 63 and the second insulating film are formed thereon. 64, trap wiring 51a is formed.
- the width of the common wiring 14e is larger than the width of the trap wiring 51a.
- the width of the common wiring 14e, 14f may be smaller than the width of the trap wiring 51a, 5 lb.
- the widths of the common wires 14e and 14f are increased, the widths of the common wires 14a and 14b can be reduced, and the frame region 13 can be reduced.
- FIG. 16 is a plan view showing a configuration of an active matrix substrate 70 according to a modification of the first embodiment as a modification of the embodiment of the present invention.
- the active matrix substrate 70 as shown in a region P surrounded by a circle symbol in FIG.
- the common wiring 14e provided in the dummy picture element region of the pixel region 12 is preferably formed so that the width of the portion intersecting with the signal line S is narrower than the main wiring width W.
- the width W ′ of the portion intersecting with the signal line S is narrower than the main wiring width W.
- the common provided in the pixel region 12 is similar to the above.
- the width of the portion that intersects the signal line S is made narrower than the main wiring width W.
- the width of the portion intersecting with the signal line S is the main wiring.
- the end of the signal line S on the side opposite to the signal input side does not cross the common wiring 14 e provided in the dummy pixel region of the pixel region 12.
- the load on the signal line S can be reduced and an appropriate voltage can be supplied to the pixel electrode, and the short circuit between the signal line S and the common wiring 14e due to the pinhole of the insulating film can be eliminated.
- the common wiring 14f does not cross the end portion of the signal line S opposite to the signal input side.
- FIG. 16 the modification of the first embodiment is shown.
- the signal input side of the signal line S is similar to the above.
- the auxiliary capacitance line CS provided in the dummy pixel area is also opposite to the signal input side of the signal line S.
- the opposite end does not cross.
- the force scanning line may be configured to be parallel to the short side of the active matrix substrate, illustrating the configuration in which the scanning line is parallel to the long side of the active matrix substrate.
- FIG. 2 and the like may have a configuration in which a force element power S stripe arrangement is shown, in which an example of a pixel element is a delta arrangement.
- the number of dummy scanning lines is not limited to three in the above example, and may be larger than this.
- common wiring and auxiliary capacitance wiring in the case of the third embodiment
- common wiring and auxiliary capacitance wiring in the case of the third embodiment
- common wiring and auxiliary capacitance wiring may be arranged in the dummy picture element areas of multiple rows.
- the present invention When the present invention is implemented as a liquid crystal display device, a liquid crystal display mode and a backlight are used. There is no limitation on the presence or absence.
- the present invention can be applied to a liquid crystal display device of any mode such as a transmissive type, a reflective type, or a transflective type.
- the present invention provides an active matrix substrate in which a bus line driving circuit is arranged on one side of a frame region and supplies a common voltage V to a counter substrate side through a common transition, and a com
- As a display device it can be used industrially.
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Vehicle Body Suspensions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Thin Film Transistor (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/301,286 US8395744B2 (en) | 2006-05-19 | 2007-05-15 | Display device including dummy pixel region |
EP07743368A EP2026121B1 (en) | 2006-05-19 | 2007-05-15 | Display device |
CN2007800175131A CN101443699B (zh) | 2006-05-19 | 2007-05-15 | 显示装置 |
DE602007010134T DE602007010134D1 (de) | 2006-05-19 | 2007-05-15 | Anzeigevorrichtung |
AT07743368T ATE486298T1 (de) | 2006-05-19 | 2007-05-15 | Anzeigevorrichtung |
JP2008516610A JP4724749B2 (ja) | 2006-05-19 | 2007-05-15 | 表示装置 |
HK09105596.8A HK1126866A1 (en) | 2006-05-19 | 2009-06-22 | Display device |
HK09108113.6A HK1130321A1 (en) | 2006-05-19 | 2009-09-04 | Display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006140718 | 2006-05-19 | ||
JP2006-140718 | 2006-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007135893A1 true WO2007135893A1 (ja) | 2007-11-29 |
Family
ID=38723206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/059933 WO2007135893A1 (ja) | 2006-05-19 | 2007-05-15 | 表示装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8395744B2 (ja) |
EP (3) | EP2249199B1 (ja) |
JP (3) | JP4724749B2 (ja) |
KR (1) | KR101005654B1 (ja) |
CN (3) | CN101950105B (ja) |
AT (1) | ATE486298T1 (ja) |
DE (1) | DE602007010134D1 (ja) |
HK (2) | HK1126866A1 (ja) |
WO (1) | WO2007135893A1 (ja) |
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JP2010060590A (ja) * | 2008-09-01 | 2010-03-18 | Epson Imaging Devices Corp | 液晶表示装置 |
JP2012208300A (ja) * | 2011-03-29 | 2012-10-25 | Seiko Epson Corp | 液晶装置および投射型表示装置 |
JP2013238846A (ja) * | 2012-05-16 | 2013-11-28 | Samsung Display Co Ltd | 表示装置 |
WO2016143097A1 (ja) * | 2015-03-11 | 2016-09-15 | 堺ディスプレイプロダクト株式会社 | 液晶表示パネル |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010060590A (ja) * | 2008-09-01 | 2010-03-18 | Epson Imaging Devices Corp | 液晶表示装置 |
JP2012208300A (ja) * | 2011-03-29 | 2012-10-25 | Seiko Epson Corp | 液晶装置および投射型表示装置 |
JP2013238846A (ja) * | 2012-05-16 | 2013-11-28 | Samsung Display Co Ltd | 表示装置 |
US9626930B2 (en) | 2012-05-16 | 2017-04-18 | Samsung Display Co., Ltd. | Display device |
US10332473B2 (en) | 2012-05-16 | 2019-06-25 | Samsung Display Co., Ltd. | Display device |
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JP2020531873A (ja) * | 2017-08-21 | 2020-11-05 | 京東方科技集團股▲ふん▼有限公司Boe Technology Group Co.,Ltd. | アレイ基板及び表示装置 |
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Also Published As
Publication number | Publication date |
---|---|
JP2011070223A (ja) | 2011-04-07 |
HK1126866A1 (en) | 2009-09-11 |
JP5114545B2 (ja) | 2013-01-09 |
ATE486298T1 (de) | 2010-11-15 |
EP2246734A1 (en) | 2010-11-03 |
JPWO2007135893A1 (ja) | 2009-10-01 |
CN101950106B (zh) | 2013-07-03 |
CN101950106A (zh) | 2011-01-19 |
CN101950105A (zh) | 2011-01-19 |
KR20090027647A (ko) | 2009-03-17 |
CN101443699B (zh) | 2010-12-08 |
US20090231532A1 (en) | 2009-09-17 |
EP2026121A1 (en) | 2009-02-18 |
EP2026121A4 (en) | 2009-12-02 |
HK1130321A1 (en) | 2009-12-24 |
JP2011059720A (ja) | 2011-03-24 |
KR101005654B1 (ko) | 2011-01-05 |
EP2249199B1 (en) | 2012-06-06 |
CN101950105B (zh) | 2013-01-30 |
EP2249199A1 (en) | 2010-11-10 |
EP2026121B1 (en) | 2010-10-27 |
CN101443699A (zh) | 2009-05-27 |
JP4724749B2 (ja) | 2011-07-13 |
DE602007010134D1 (de) | 2010-12-09 |
JP5114544B2 (ja) | 2013-01-09 |
US8395744B2 (en) | 2013-03-12 |
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