JP2004053753A - Liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which the display defect caused by gap unevenness resulting from thickness nonuniformity of a liquid crystal display panel accidentally generated in the neighborhood of a sealant outside a display region is reduced and to provide the liquid crystal display device with a high aperture ratio of the liquid crystal display panel corresponding to requirement of high luminance of a display device. <P>SOLUTION: In the liquid crystal display device provided with a first substrate 1 with an electrode formed thereon, a second substrate 2 with a color filter 33 mounted on a face opposite to the electrode formed on the first substrate, a sealant 8 formed between the first substrate 1 and the second substrate 2 superimposed to each other via a liquid crystal layer 6 and held with spacers 7 outside the display region of the first and second substrates 1, 2 for the purpose of sealing in the liquid crystal layer 6 and spacers 9 inside the sealant arranged inside the sealant, the color filter 33 mounted on the second substrate has a coloring layer 3 on the display region. The coloring layer 3 has 2.5-4.0 μm thickness. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid crystal display device, and particularly to a configuration of a liquid crystal display panel for performing color display.
[0002]
[Prior art]
FIG. 4 is a sectional view of a conventional liquid crystal display panel. The structure of the conventional liquid crystal display device includes a first substrate 1 which is a lower transparent insulating substrate (array substrate) in which a thin film transistor including a wiring portion 10, a pixel electrode portion 11, an insulating film, an alignment film 12 and the like are stacked, and a light shielding layer 5. A spacer 7 for disposing a second substrate 2 which is an upper transparent insulating substrate (color filter substrate) in which a color filter 33 composed of a colored layer 3, a transparent electrode 4 and the like and an alignment film 12 and the like are laminated in a display area. Are superimposed at a predetermined interval by using, and are adhered by a seal 8 formed outside the display area. The seal 8 is provided with an in-seal spacer 9 so as to keep the space between the two substrates. Further, a liquid crystal 6 is injected from a liquid crystal injection port (not shown) formed in a part of the seal 8 and sealed, and a polarizing plate is attached to the outside of both substrates to form a liquid crystal display panel. A liquid crystal display device is composed of the liquid crystal display panel and a backlight disposed on one of the substrates.
[0003]
The thickness of the liquid crystal layer 6 in the display area existing between the first substrate and the second substrate constituting the liquid crystal display panel is designed to optimize optical characteristics such as luminance, viewing angle, color characteristics, and response speed. Then, the diameter of the spacer 7 arranged in the display area is determined. Also, the diameter of the spacer 9 in the seal for maintaining the distance between the substrates is not uniform in consideration of the thickness of the electrodes and the color filters 33 formed on both substrates in the display area, and the thickness of the liquid crystal layer 6 is not uniform in the display area. (The thickness in the vicinity of the seal outside the display area where the colored layer 3 is not formed is larger than the thickness of the liquid crystal layer 6 in the display area. There).
[0004]
FIG. 6 is a plan view of a pixel on the substrate, and FIG. 5 is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 6, reference numeral 21 denotes a source wiring constituting an electrode portion formed on the first substrate, 22 denotes a gate wiring, and a thin film transistor 23 is provided at an intersection of the two wirings. Reference numeral 24 denotes a common capacitance line formed in the same layer as the gate line 22. As shown in FIG. 5, a pixel electrode 25 is formed on an insulating film 26 formed by stacking the gate line 22 and the common capacitance line 24. After the pixel electrode 25 is formed, the alignment film 12 is applied on the entire surface. Reference numeral 5 denotes a light shielding layer formed on the second substrate. At this time, when the liquid crystal display device is viewed from the oblique viewing direction D1 as shown in FIG. As for light leakage, the thickness of the colored layer 3, the transparent electrode 4, the alignment film 12 and the insulating film 26 formed on the first substrate on the second substrate, and the thickness of the liquid crystal layer 6 existing between the two substrates are shielded by the light shielding layer 5. This is due to the inability to prevent light leakage in a conventional liquid crystal display device by forming the width 5W of the light shielding layer 5 to be large.
[0005]
[Problems to be solved by the invention]
In the manufacturing process of the liquid crystal display device as described above, a foreign substance may suddenly enter the vicinity of the seal outside the display area. For example, when the thickness of the colored layer 3 laminated on the second substrate of the liquid crystal display panel is 1.0 μm, a spacer having a diameter of about 3.5 μm is used in the display area, and the spacer 9 in the seal 9 is used. When the diameter is set to 4.5 μm, if foreign matter larger than the diameter of the spacer in the seal, for example, about 5.0 μm, is mixed in the vicinity of the seal outside the display area, the thickness of the liquid crystal display panel becomes non-uniform, resulting in poor display. Had occurred. The size of the foreign matter to be mixed is 5.0 μm to 7.0 μm, and there is a large size of 8.0 μm, which is caused by the unevenness of the thickness of the liquid crystal panel suddenly occurring near the seal outside the display area. This is one of the causes of display failure due to gap unevenness.
[0006]
Further, in the conventional liquid crystal display device, the width 5W of the light-shielding layer 5 is increased to prevent light from passing through the backlight due to the thickness of the electrode, the colored layer and the like on the substrate as described above. If this happens, the aperture ratio of the liquid crystal display panel will decrease, and the high-brightness liquid crystal display panel recently required cannot be realized.
[0007]
The present invention has been made in order to solve the above-described problem, and is based on gap unevenness caused by non-uniformity in thickness between liquid crystal display panels which has suddenly occurred in the vicinity of a seal outside a display area. An object of the present invention is to provide a liquid crystal display device that reduces display defects. Further, it is an object of the present invention to provide a liquid crystal display device having a high aperture ratio of a liquid crystal display panel in response to a demand for higher luminance of the display device.
[0008]
[Means for Solving the Problems]
The first liquid crystal display device of the present invention includes a first substrate on which electrodes are formed (for example, the first substrate 1 in the present embodiment), and a color filter formed on a surface facing the electrodes formed on the first substrate. (For example, the second substrate (for example, the second substrate 2 in the present embodiment) provided with the color filter 33 in the present embodiment), the first substrate and the liquid crystal layer (for example, in the embodiment of the present invention). The first substrate and the second substrate, which are held by a spacer (for example, the spacer 7 in the embodiment of the present invention) via the liquid crystal layer 6) and overlapped with the second substrate, to seal the liquid crystal layer. A seal (for example, seal 8 in the present embodiment) formed outside the display area of the second substrate, and a spacer (for example, spacer 9 in the seal in the embodiment of the present invention) disposed in the seal are provided. Was In crystal display device, a color filter provided on the second substrate has a colored layer in the display area, the thickness of the colored layer is characterized in that it is 2.5Myuemu～4.0Myuemu.
[0009]
According to a second liquid crystal display device of the present invention, in the first liquid crystal display device, the color filter further includes a light shielding layer on the colored layer.
[0010]
According to a third liquid crystal display device of the present invention, in the second liquid crystal display device, the color filter further includes a transparent electrode between the colored layer and the light shielding layer. .
[0011]
According to a fourth liquid crystal display device of the present invention, in the second liquid crystal display device described above, the front color filter includes a transparent electrode further above the light shielding layer.
[0012]
According to a fifth liquid crystal display device of the present invention, there is provided a first substrate having electrodes formed thereon, a second substrate having a color filter provided on a surface facing the electrodes formed on the first substrate, and A seal formed outside the display area of the first and second substrates to seal the liquid crystal layer between the second substrate and the second substrate held by a spacer via a liquid crystal layer and overlapped; A liquid crystal display device comprising a spacer disposed in the seal, wherein the color filter provided on the second substrate has a colored layer in a display area, and a light-shielding layer on the colored layer. It is assumed that.
[0013]
According to a sixth liquid crystal display device of the present invention, in the fifth liquid crystal display device, the color filter further includes a transparent electrode between the colored layer and the light shielding layer. .
[0014]
According to a seventh liquid crystal display device of the present invention, in the fifth liquid crystal display device, the color filter is provided with a transparent electrode further above the light shielding layer.
[0015]
An eighth liquid crystal display device according to the present invention is the liquid crystal display device according to any one of the second to seventh aspects, wherein the light shielding layer is formed of a conductive material.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
Hereinafter, the structure of the liquid crystal display device according to the embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a sectional view of a liquid crystal display panel of a liquid crystal display device according to an embodiment of the present invention. FIG. 2 is a sectional view corresponding to the AA section shown in FIG. 6 in the liquid crystal display device according to the present invention. FIG. 3 is an enlarged view of the spacer portion of FIG. In the figure, 1 is a first substrate which is a lower transparent insulating substrate (array substrate), 2 is a second substrate which is an upper transparent insulating substrate (color filter substrate), and a colored layer 3 is formed on the second substrate 2. A color filter 33 such as the transparent electrode 4 and the light shielding layer 5 is formed. 6 is a liquid crystal layer, 7 is a spacer arranged in a display area, 8 is a seal, 9 is a spacer in the seal arranged in the seal, 10 is a wiring portion, 11 is a pixel electrode portion, and 12 is an alignment film. 21 is a source wiring, 22 is a gate wiring, 23 is a thin film transistor, 21 is a source wiring, 22 is a gate wiring, 23 is a thin film transistor, 24 is a common capacitance wiring, 25 is a pixel electrode, 26 is an insulating film, 31 is an insulating substrate, 32 is an insulating substrate.
[0017]
Hereinafter, a method for manufacturing a liquid crystal display device according to an embodiment of the present invention will be described. As shown in FIG. 1, on a first substrate 1, electrodes such as a wiring portion 10, a pixel electrode portion 11, and an insulating film are formed on a transparent insulating substrate 31 such as glass. The pattern of the first substrate 1 is laminated while repeating processes such as film formation, resist coating, exposure, development, etching, and resist peeling, and then, after applying an alignment film 12 over the entire surface, a rubbing treatment is performed to transfer electrodes (not shown). ) Is formed, and the spacers 7 are scattered in the display area.
[0018]
The second substrate 2 has a color filter 33 formed in a display area on a surface of the transparent insulating substrate 32 such as glass which faces the first substrate 1. In FIG. 2, three colored layers 3 of RED, GREEN, and BLUE are formed on a transparent insulating substrate 32 by a pigment dispersion method, a dyeing method, an electrodeposition method, or the like. The thickness of the coloring layer 3 can be increased without changing the transmittance by reducing the R, G, and B pigment concentrations.
[0019]
Further, marks required in the manufacturing process are formed in the colored layer 3 step since the light shielding layer 5 step is performed in a step subsequent to the colored layer 3 step. Even if an alignment mark is formed in the colored layer 3 process, for example, in the BLUE process, the substrate can be recognized. Alignment is performed using the alignment marks formed in the three colored layer processes.
However, the alignment mark for assembling the panel may be provided in the light shielding layer 5.
[0020]
The intervals between the three colors of the colored layer 3 (the gap between RED and GREEN, the gap between GREEN and BLUE, and the gap between BLUE and RED) are formed as narrow as possible to ensure uniformity of the gap. For example, in the embodiment of the present invention, the interval between the colored layers 3 is 3 μm. In the related art in which the thickness of the coloring layer 3 is reduced, if the spacing between the coloring layers 3 is reduced, the coloring layer 3 rides on the tapered angle formed at the edge of the coloring layer pattern, and further overlaps with the adjacent coloring layer 3. For this reason, a projection is formed, and display unevenness may occur. However, in this embodiment in which the colored layer 3 is formed thick, the tapered angle portion is wide even if the interval between the colored layers 3 is narrow, so that there is a portion where the colored layer 3 adjacent to the taper angle runs on, but an overlapping portion. Is less likely to occur, and display unevenness is less likely to occur.
[0021]
Next, after the colored layer 3 is formed, the transparent electrode 4 is formed. The transparent electrode 4 is formed by laminating a transparent electrode material such as ITO (Indium Tin Oxide) by using a mask sputtering method or the like. Next, the light shielding layer 5 is formed so as to overlap the transparent electrode. The light-shielding layer 5 forms a pattern by forming a film of chromium or the like on the transparent electrode 4 and performing resist coating, exposure, development, etching, resist stripping, and the like. The light-shielding layer 5 only needs to shield a portion that does not contribute to display, and may be formed of a chromium-based, tantalum-based conductive material, a resin material, or the like. Thereafter, an alignment film 12 is formed on the entire surface, rubbing is performed, and a transfer electrode (not shown) is formed.
[0022]
In the liquid crystal display panel, the surface of the first substrate 1 on which the electrodes and the like are formed and the surface of the second substrate 2 on which the color filter 33 is provided are opposed to each other, and screen printing or a dispenser is used outside the display area of both substrates. For example, a seal material 8 made of a thermosetting epoxy resin to which a black organic pigment is added is applied to form a seal 8, and both substrates are held at a predetermined interval by a spacer 7 or the like scattered in a display area and overlapped. And a curing treatment is performed. In addition, the seal 8 is formed by mixing a spacer 9 inside the seal so as to keep a space between the substrates near the seal outside the display area. As described above, the diameter of the spacer 9 in the seal is set in consideration of the thickness of the spacer 7, the colored layer 3, and the like in the display area. After injecting and sealing liquid crystal from a liquid crystal injection port formed in a part of the sealing material, a polarizing plate is attached to the outside of both substrates to form a liquid crystal display panel. Then, a liquid crystal display device is formed from the liquid crystal display panel and a backlight disposed on one of the substrates.
[0023]
In the manufacturing process of the liquid crystal display device described above, the thickness of the liquid crystal layer 6 is designed so as to optimize optical characteristics such as luminance, viewing angle, color characteristics, and response speed, and the diameter of the spacer to be arranged in the display region is 3 mm. The one having a size of about 0.5 μm to 4.5 μm is used. Further, in order to reduce the gap unevenness which is suddenly generated due to the foreign material mixed in the vicinity of the seal outside the display area, the size of the spacer 9 in the seal is determined in consideration of the size of the foreign material mixed. The diameter of the spacer 9 in the seal is set to 6.0 μm to 8.5 μm so as to prevent gap unevenness even if foreign substances of 8.0 μm or less are mixed. The thickness of the colored layer 3 is formed in the range of 2.5 μm to 4.0 μm in consideration of the diameter of the spacer 9 in the seal and the thickness of the liquid crystal layer 6.
[0024]
When formed as described above, even if foreign substances having a diameter equal to or less than the diameter of the in-seal spacer 9 of about 5.0 μm to 7.0 μm are mixed in the vicinity of the seal outside the display area in the manufacturing process, the allowable range for the foreign substances is expanded. Therefore, it is possible to reduce display defects due to gap unevenness caused by non-uniformity in thickness between the liquid crystal display panels, which suddenly occurred in the vicinity of the seal outside the display area, and further improve manufacturing efficiency. .
[0025]
Further, as shown in FIG. 2, in the configuration of the present embodiment, first, the colored layer 3 is formed on the substrate, and then the light shielding layer 5 is formed. Therefore, when the liquid crystal display device is viewed from the oblique viewing direction D1, the thickness due to light leakage is the thickness of the liquid crystal layer 6 between both substrates, the thickness of the alignment film 12 on both substrates, and the thickness of the insulating film 26 on the first substrate. is there. In the conventional structure, the thickness of the colored layer 3 and the transparent electrode 4 formed on the second substrate must be taken into consideration. To prevent light leakage, the width of the light-shielding layer 5 must be increased. Was. However, in the liquid crystal display panel according to the present embodiment, even when the light-shielding layer 5 having the same width as that of the related art and having a width of 5 W is formed on the second substrate, light leakage can be prevented. can do.
[0026]
Further, as shown in FIG. 3, in this color filter, the light shielding layer 5 is formed on the transparent electrode 4, so that a contact portion 5C where the transparent electrode 4 and the light shielding layer 5 come into contact is formed larger than the conventional configuration. At this time, when the transparent electrode 4 is formed of a conductive material such as ITO, and the light-shielding layer 5 is formed of a conductive material such as Cr, Ta, or Ni, the electrical resistance of the opposing transparent electrode can be reduced by forming the contact portion 5C. The thickness of the transparent electrode layer can be reduced. When the thickness of the transparent electrode layer is reduced, the transmittance is improved.
[0027]
Further, with such a configuration, the number of transfer electrodes can be reduced. The transfer electrode is an electrode formed on the first substrate or the second substrate and connecting the input wiring of the common electrode of the first substrate to the second substrate. This transfer electrode is usually arranged in a peripheral portion outside the display area of the liquid crystal display panel. However, if the structure in which the contact area between the transparent electrode layer and the light-shielding layer is large as described above, the electric resistance of the opposing transparent electrode becomes small. In addition, the number of transfer electrodes can be reduced. Therefore, the area in which the transfer electrodes are provided, that is, the area in which the transfer electrodes are provided in the vicinity of the seal, which is outside the display region, can be reduced, so that the size of the liquid crystal display panel can be reduced. This embodiment can be realized as long as the material of the light shielding layer is a conductive material such as Cr, Ta, or Ni. In this embodiment, the thickness of the transparent electrode is 0.13 μm, and the number of transfer electrodes is four.
[0028]
Further, in the conventional liquid crystal display panel, since the light shielding layer 5 is formed directly on the insulating substrate, the reflectance to external light is high, and the light shielding layer 5 is formed using a multilayer chrome film or the like to prevent the reflectance. I needed to. Since the formation of the multilayer chromium film is performed by laminating CrN _x , CrO _x , Cr and the like, a complicated operation process is required, resulting in an expensive liquid crystal display panel. In this embodiment, since the colored layer 3 is formed directly on the insulating substrate and the transparent electrode 4 and the light-shielding layer 5 are laminated in this order, there is a reduction in the transmittance of the colored layer 3, and the reflected light reflects on the colored layer 3. Since the light is reflected twice, the light reflectance is reduced. Therefore, it is also possible to use a single layer chromium film or the like instead of the multilayer chromium film for the light shielding layer 5. When a single-layer chromium film is used, a liquid crystal display panel at lower cost than a multi-layer chromium film can be manufactured. Further, since the single-layer chromium film is a general film, it can be formed by using, for example, a chromium film formation sputtering apparatus. Therefore, if the formation of the colored layer is performed by a color filter maker, the formation of the transparent electrode and the light-shielding layer can be performed by any of the color filter maker, the film formation maker, and the LCD maker. become. Further, in order to lower the reflectance, the light shielding layer 5 may be formed using a resin.
[0029]
In the present embodiment, the structure in which the color filter on the second substrate includes the transparent electrode 4 between the coloring layer 3 and the light-shielding layer 5 is described, but the color filter is provided on the coloring layer. The same effect can be obtained by using a structure in which the transparent electrode 4 is provided above the light shielding layer 5.
[0030]
In this embodiment mode, a liquid crystal mode in which a transparent electrode is not required on a surface of the second substrate facing the first substrate, for example, a system in which liquid crystal is aligned in parallel with the substrate by a lateral electric field, is used as IPS (In Plane). A similar effect can be obtained in the case of the switching driving method.
[0031]
【The invention's effect】
A first liquid crystal display device according to the present invention includes a first substrate having electrodes formed thereon, a second substrate having a color filter provided on a surface facing the electrodes formed on the first substrate, and A seal formed outside the display area of the first and second substrates for sealing the liquid crystal layer between the second substrate and the second substrate held and held by the spacer via the liquid crystal layer; A color filter provided on the second substrate has a colored layer in a display region, and the colored layer has a thickness of 2.5 μm or less. Since the thickness is 4.0 μm, even if foreign matter is mixed in the manufacturing process, the allowable range for the foreign matter can be expanded, so that the liquid crystal display suddenly generated near the seal outside the display area. Non-uniform thickness between panels Display defects due to gap unevenness caused by the above can be reduced, and manufacturing efficiency can be improved.
[0032]
The second liquid crystal display device of the present invention is characterized in that, in the first liquid crystal display device, the color filter further includes a light shielding layer on the coloring layer. Even when formed on two substrates, it is possible to prevent light from passing through the backlight, so that the aperture ratio can be increased. Further, the reflectance of light with respect to external light can be reduced.
According to a third liquid crystal display device of the present invention, in the second liquid crystal display device, the color filter is further provided with a transparent electrode between the colored layer and the light shielding layer. Even when a light-shielding layer having the same width as that of the related art is formed on the second substrate, it is possible to prevent backlight from leaking out, so that the aperture ratio can be increased. Further, the reflectance of light with respect to external light can be reduced.
[0034]
According to a fourth liquid crystal display device of the present invention, in the second liquid crystal display device, the color filter is provided with a transparent electrode further above the light-shielding layer. Can be reduced.
[0035]
According to a fifth liquid crystal display device of the present invention, there is provided a first substrate having electrodes formed thereon, a second substrate having a color filter provided on a surface facing the electrodes formed on the first substrate, and A seal formed outside the display area of the first and second substrates for sealing the liquid crystal layer between the second substrate and the second substrate held and held by the spacer via the liquid crystal layer; A liquid crystal display device comprising: a spacer in the seal disposed in the seal; wherein the color filter provided on the second substrate has a colored layer in a display region, and a light shielding layer on the colored layer. Therefore, even when a light-shielding layer having the same width as that of the related art is formed on the second substrate, it is possible to prevent light from passing through the backlight, so that the aperture ratio can be increased. Further, the reflectance of light with respect to external light can be reduced.
[0036]
According to a sixth liquid crystal display device of the present invention, in the fifth liquid crystal display device described above, the color filter is further provided with a transparent electrode between the colored layer and the light shielding layer. Even when a light-shielding layer having a width is formed on the second substrate, it is possible to prevent backlight from leaking out, so that the aperture ratio can be increased. Further, the reflectance of light with respect to external light can be reduced.
[0037]
According to a seventh liquid crystal display device of the present invention, in the fifth liquid crystal display device, the color filter is provided with a transparent electrode further above the light-shielding layer. Can be reduced.
[0038]
An eighth liquid crystal display device according to the present invention is characterized in that, in any one of the second to seventh liquid crystal display devices, the light-shielding layer is formed of a conductive material, so that the electric resistance of the counter electrode is reduced. Accordingly, the thickness of the transparent electrode layer can be reduced. When the thickness of the transparent electrode layer is reduced, the transmittance is improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a liquid crystal display device according to the present embodiment.
FIG. 2 is a cross-sectional view of the liquid crystal display device according to the present embodiment taken along line AA in FIG.
FIG. 3 is a cross-sectional view of the liquid crystal display device according to the present embodiment.
FIG. 4 is a cross-sectional view of a conventional liquid crystal display device.
5 is a cross-sectional view of the conventional liquid crystal display device taken along the line AA in FIG. 6;
FIG. 6 is a plan view of a pixel structure in a liquid crystal display device.
1: First substrate 21: Source wiring 2: Second substrate 22: Gate wiring 3: Colored layer 23: Thin film transistor 4: Transparent electrode 24: Common capacitance wiring 5: Light shielding layer 25: Pixel electrode 6: Liquid crystal layer 26: Insulating film 7: Spacer 31: Insulating substrate 8: Seal 32: Insulating substrate 9: Spacer in seal 33: Color filter 10: Wiring unit 11: Pixel electrode unit 12: Alignment film

Claims (8)

A first substrate having electrodes formed thereon,
A second substrate provided with a color filter on a surface facing the electrode formed on the first substrate;
Formed outside the display area of the first substrate and the second substrate to seal the liquid crystal layer between the first substrate and the second substrate held by a spacer via a liquid crystal layer and overlapped by a spacer Seal and
A liquid crystal display device comprising: a seal spacer disposed in the seal;
The color filter provided on the second substrate has a coloring layer in a display area,
A liquid crystal display device, wherein the thickness of the coloring layer is 2.5 μm to 4.0 μm. The liquid crystal display device according to claim 1, wherein the color filter further includes a light shielding layer on the coloring layer. The liquid crystal display device according to claim 2, wherein the color filter further includes a transparent electrode between the coloring layer and the light shielding layer. 3. The liquid crystal display device according to claim 2, wherein the color filter includes a transparent electrode further above the light shielding layer. A first substrate having electrodes formed thereon,
A second substrate provided with a color filter on a surface facing the electrode formed on the first substrate;
Formed outside the display area of the first substrate and the second substrate to seal the liquid crystal layer between the first substrate and the second substrate held by a spacer via a liquid crystal layer and overlapped by a spacer Seal and
A liquid crystal display device comprising: a seal spacer disposed in the seal;
The color filter provided on the second substrate has a coloring layer in a display area,
A liquid crystal display device comprising a light-shielding layer on the coloring layer. The liquid crystal display device according to claim 5, wherein the color filter further comprises a transparent electrode between the coloring layer and the light shielding layer. 6. The liquid crystal display device according to claim 5, wherein the color filter includes a transparent electrode further above the light shielding layer. 8. The liquid crystal display device according to claim 2, wherein the light shielding layer is formed of a conductive material.

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