JP2001228491A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a satisfactory display quality by reducing crosstalk while suppressing the reduction of an opening ratio due to the increase of an auxiliary capacitance to the minimum in an active matrix type liquid crystal display device. SOLUTION: This display device is constituted so that the electrode area of an auxiliary capacitance element corresponding to a green color becomes larger than the electrode area of an auxiliary capacitance elements corresponding to a red color and a blue color so that the capacitance of the auxiliary capacitance element connected to a green pixel (G) whose visual sensitivity becomes larger than that of the auxiliary capacitance elements connected to pixels (R), (B) of other colors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an active matrix type liquid crystal display device in which switching elements composed of thin film transistors (hereinafter, referred to as TFTs) are arranged for each pixel electrode.

[0002]

2. Description of the Related Art In recent years, while having a high density and a large capacity,
Practical use of liquid crystal display devices capable of obtaining high-performance and high-definition display has been promoted.

There are various types of liquid crystal display devices,
Among them, a plurality of scanning lines and a plurality of scanning lines provided in a direction intersecting with each other are used because crosstalk between adjacent pixels is small, high-contrast display is obtained, transmission-type display is possible, and the area can be easily increased. An active matrix type liquid crystal display device including an array substrate in which pixel electrodes are provided on a matrix using TFTs as switching elements in a plurality of regions defined by the signal lines is widely used.

In an active matrix type liquid crystal display device, the potential of a pixel electrode written in a period in which a scanning line is selected is affected by a parasitic capacitance or a potential fluctuation of an adjacent signal line due to an off-leak current of a TFT in a non-selection period. Causes the occurrence of crosstalk and a decrease in contrast ratio. In order to suppress such deterioration in image quality, a liquid crystal display device of this type generally has a configuration in which an auxiliary capacitor is formed electrically in parallel with a pixel electrode.

[0005] In an active matrix type liquid crystal display device, a black matrix (BM) is provided for the purpose of preventing light leakage between pixels. Conventionally, the BM has been generally disposed together with a color layer for a color filter on a counter substrate which is disposed to face the array substrate via a liquid crystal layer. However, in such a structure, it is necessary to consider the misalignment between the array substrate and the opposing substrate, which causes a reduction in the ratio of the light-transmitting openings (aperture ratio). For this reason, in recent years, an organic insulating film is provided on a wiring of an array substrate, a pixel electrode is provided on an uppermost layer, and an end portion thereof is overlapped with a wiring provided in a matrix, so that a wiring using the wiring as a BM is provided. B
An M structure has been proposed. Further, a structure using a coloring layer of a color filter conventionally formed on a counter substrate instead of the organic insulating film has been proposed. In such a structure, a high aperture ratio can be realized because the aperture ratio does not decrease due to misalignment between the array substrate and the counter substrate.

[0006]

In the above-mentioned system in which the wiring electrode and the pixel electrode are overlapped with the organic insulating film interposed therebetween, the signal line and the pixel electrode are arranged at a predetermined distance, and the openings are opposed to each other. Compared with the method defined by the BM arranged on the substrate side, the parasitic capacitance between the signal line and the pixel electrode increases, the potential of the pixel electrode is affected by the adjacent signal line, crosstalk occurs, and the display quality deteriorates. There is a problem that. In order to solve this problem, it is conceivable to add a storage capacitor larger than that of the conventional structure.
This will offset the effect of improving the aperture ratio by adopting the structure.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display device capable of obtaining a good display quality by reducing crosstalk while minimizing a decrease in aperture ratio.

[0008]

To achieve the above object, according to the present invention, a plurality of signal lines and a plurality of scanning lines arranged to cross each other, and each intersection of the signal lines and the scanning lines is provided. A switching element disposed for each unit, a red, green, and blue coloring layer disposed so as to cover at least a part of the signal line, the scanning line, and the switching element; and a coloring layer disposed on the coloring layer. An array substrate including a plurality of pixel electrodes electrically connected to each of the switching elements via through holes formed in a layer, and auxiliary capacitance elements electrically arranged in parallel with the pixel electrodes; In the liquid crystal display device, the capacitance of the auxiliary capacitance element electrically arranged in parallel with the pixel electrode arranged on the green coloring layer is electrically connected to the pixel electrode arranged on the red coloring layer. Typically Being larger than the capacitance of the storage capacitor elements arranged the parallel capacitor and with said pixel electrode electrically disposed coloring layer of the blue auxiliary capacitor elements arranged in columns.

In the above configuration, the capacitance of the auxiliary capacitance element connected to the green pixel electrode having high visibility is made larger than the capacitance of the other auxiliary capacitance elements so as to improve crosstalk when displaying green. I have to. According to this, since the crosstalk at the time of displaying red and blue is relatively inconspicuous, good display quality can be obtained as a whole by improving the green crosstalk. In addition, the decrease in the aperture ratio can be reduced to 1/3 of the case where the capacitance of the auxiliary capacitance element of all pixels is increased.

In a preferred embodiment, the capacitance (CsG) of the auxiliary capacitance element electrically arranged in parallel with the pixel electrode arranged on the green color and the pixel electrode arranged on the red color (R) are electrically connected to each other. The relationship between the capacitance (CsR) of the auxiliary capacitance element arranged in parallel with the pixel electrode and the capacitance (CsB) of the auxiliary capacitance element electrically arranged in parallel with the pixel electrode arranged on the blue color (B). , CsG> CsR ≧ CsB.

As described above, by increasing the capacitance value of the auxiliary capacitance element in the order of luminosity (1. green, 2. red, 3. blue), the overall display quality can be improved in a more balanced manner. .

In a preferred embodiment, the width (WR) of the red coloring layer in the signal line direction, the width (WG) of the green coloring layer in the signal line direction, and the width (WG) of the blue coloring layer in the signal line direction are preferable. WB) is set to WG> WR ≧ WB.

As described above, by increasing the width of the colored layer in the signal line direction for green having a large capacitance value of the auxiliary capacitance element, and reducing the capacitance of the auxiliary capacitance element for red and blue having a small capacitance value. The green pixel aperture ratio to be increased can be made equal to the red or blue pixel aperture ratio having a small capacitance value.

Further, as a preferred embodiment, one of a pair of electrodes constituting an auxiliary capacitance element electrically arranged in parallel with the pixel electrode disposed on the coloring layer has a shape of red (R) or green. (G) and blue (B), and the area of the other electrode shape is the area (SC) of the auxiliary capacitance element electrically connected to the pixel electrode disposed on the green color.
sG), the area of the auxiliary capacitance element electrically connected to the pixel electrode arranged on the red color (SCsR), and the area of the auxiliary capacitance element electrically connected to the pixel electrode arranged on the blue color (SCsR). SCsB), SCsG> SCsR ≧ SCs
B.

As described above, in the pair of electrodes forming the auxiliary capacitance element, one electrode has the same shape in three colors, and the size of the other electrode is determined in the order of luminosity (1. green, 2.
Red; By setting (blue), good display quality can be obtained without changing the shape of the opening.

[0016]

Next, an embodiment in which the liquid crystal display device according to the present invention is applied to an active matrix type liquid crystal display device will be described.

In the following embodiments, when there are a plurality of parts having the same structure, one of the parts will be described as a representative, and when the same part is described using a plurality of drawings, one part will be described. The other drawings are described with reference numerals shown in the drawings. Further, a, b, and c attached to the reference numerals indicate red (R), green (G), and blue (B), but some of them are omitted. Further, “signal lines 19a, 19b, 19
When there are a plurality of identical portions as in "c", they are collectively described as "signal lines 19" as necessary.

[First Embodiment] FIG. 1 is a schematic plan view showing an electrode structure of a liquid crystal display device 10 according to a first embodiment, in which red (R), green (G), and blue (B) colored layers are arranged in this order. Shows a state where is arranged. FIG. 2 is a schematic cross-sectional view taken along a dashed line AB of FIG. 1 and shows a state in which a cross section cut into an L-shape is developed (in the drawing, the dashed line “Y” is bent. Location).

In FIG. 2, a liquid crystal display device 10 has an array substrate 11 having a coloring layer (color filter) described later.
The liquid crystal layer 70 is sandwiched between the first substrate 0 and the counter substrate 120. The distance between these two substrates is defined by spacer columns 25 made of resin.
The counter substrate 120 and the counter substrate 120 are adhered by a sealing member (not shown) arranged so as to surround the outer periphery of the substrate.

The opposing substrate 120 is provided on the transparent substrate 51 by IT.
A transparent electrode 52 made of O and an alignment film 53 are sequentially formed.

On the other hand, the array substrate 110 is
A scanning line 15, auxiliary capacitance electrodes 16 a, 16 b, 16 c provided in parallel with the scanning line 15, and signal lines 19 a, 19 b, 19 c orthogonal to these via an insulating film 17 are arranged thereon. In the vicinity of the intersection of the scanning line 15 and the signal line 19, a TFT element 30 having an Nch LDD structure as a switching element, a source electrode 112 electrically connected to the TFT element 30, and a connection to the source electrode 112 The pixel electrodes 24 (24a, 24b, 24c) are arranged.

The TFT element 30 is provided on the transparent substrate 11.
In addition, a drive circuit (not shown) is formed around the display area. Then, a protective insulating film 20 is formed so as to cover the TFT element 30 and the driving circuit, and a red colored layer (R) 22a as a color filter is further formed thereon.
The green coloring layer (G) 22b and the blue coloring layer (B) 22c are arranged in a stripe shape.

The pixel electrode 24 is disposed on the coloring layer 22, and is connected to the source electrode 112 via the coloring layer 22 and the protective insulating film contact hole 21 formed in the protective insulating film 20. The pixel electrode 24 has
The auxiliary capacitance element 130 electrically connected in parallel with this is connected. Further, the pixel electrode 24 and the coloring layer 22
An alignment film 26 is disposed on the entire surface of the substrate so as to cover the substrate. The ends of the pattern of the green coloring layer (G) 22b are connected to the red coloring layer (R) 22a and the blue coloring layer (B) 22c.
Covered with. This is achieved by making the light-shielding mask used when processing each colored layer suitable.

The auxiliary capacitance element 130 electrically arranged in parallel with the pixel electrode 24 includes an auxiliary capacitance lower electrode 13 (13
a, 13b, 13c) and the storage capacitor upper electrode 16 (16
a, 16b, 16c). The capacitance of each auxiliary capacitance element 130 is a green colored layer (G) having high visibility.
The storage capacitors electrically arranged on the pixel electrode 24b on the pixel electrode 22b are connected to the pixel electrodes 24b on the red colored layer (R) 22a.
The values are set to be larger than the auxiliary capacitances arranged in parallel with the pixel electrodes 24c on the blue colored layer (B) 22c and the blue colored layer (B) 22c.

In this embodiment, as shown in FIG. 1, the auxiliary capacitance lower electrode 13b and the auxiliary capacitance upper electrode 1 which constitute the auxiliary capacitance element 130 corresponding to the green colored layer (G) 22b.
The area of 6b is smaller than the auxiliary capacitance lower electrodes 13a and 13c and the auxiliary capacitance upper electrode 16 which constitute the auxiliary capacitance element 130 of the red colored layer (R) 22a and the blue colored layer (B) 22c.
The width of the auxiliary capacitance lower electrode 13b and the auxiliary capacitance upper electrode 16b in the direction of the signal line 19 is increased so as to be larger than a and 16c. That is, the green colored layer (G) 22b
The capacitance (CsG) of the auxiliary capacitance element 130 electrically arranged in parallel with the pixel electrode 24b disposed thereon and the pixel electrode 24a arranged on the red color (R) are electrically arranged in parallel. The capacitance (CsR) of the auxiliary capacitance element 130 and the capacitance (CsB) of the auxiliary capacitance element 130 electrically arranged in parallel with the pixel electrode 24c arranged on the blue color (B).
Is set such that CsG> CsR ≧ CsB.

In order to increase the capacitance (CsG) of the auxiliary capacitance element 130 corresponding to the green colored layer (G) 22b, the auxiliary capacitance lower electrode 13b and the auxiliary capacitance upper electrode 16b
When the area of is increased, the pixel aperture ratio of the green coloring layer (G) 22b decreases. For this reason, the red colored layer (R)
The width (WR) of the green coloring layer (G) 22b in the direction of the scanning line 15 (WG), and the width (WB) of the blue coloring layer (B) 22b in the direction of the scanning line 15 are: , W
G> WR ≧ WB is set. Thus, the width (W) of the green colored layer (G) 22b in the direction of the signal line 15 is obtained.
By increasing G), the pixel aperture ratio can be made equal to the pixel aperture ratio of red or blue having a small capacitance value.

The liquid crystal display device 10 constructed as described above
According to the method, the capacitance of the auxiliary capacitance element 130 corresponding to the green colored layer (G) 22b having high visibility is larger than the capacitance of the auxiliary capacitance element 130 corresponding to the other colored layers. Talk is improved. On the other hand, since the crosstalk when displaying red and blue is relatively inconspicuous, by improving the green crosstalk, it is possible to obtain good display quality as a whole. In this case, R
A decrease in the aperture ratio can be suppressed to １ ／ as compared with the case where the capacitance of the auxiliary capacitance element of all the GB pixels is increased.

In FIG. 1, CsG> CsR = CsB
, But the capacitance value of each auxiliary capacitance element 130 is determined in the order of luminosity (1. green, 2. red, 3. blue).
By setting so that CsG>CsR> CsB, the overall display quality can be improved in a more balanced manner.

Next, a method of manufacturing the above-described liquid crystal display device 10 will be described.

First, a-Si is formed on a light-transmitting insulating substrate 11 such as a high strain point glass substrate or a quartz substrate by a CVD method or the like.
Deposit the membrane. After performing furnace annealing, XeCl excimer laser is irradiated to polycrystallize a-Si. Thereafter, the polycrystalline Si is patterned by a photo-etching method, and the channel layer 12 of the TFT element 30 in the pixel portion in the display region and the TFT (circuit T) in the drive circuit region (not shown) are formed.
FT) and a storage capacitor 13
A polysilicon film to be the lower storage capacitor electrode 13 is formed. The polysilicon film is composed of an auxiliary capacitance lower electrode 13a electrically arranged in parallel with a pixel electrode 24a on a red colored layer (R) 22a having a different area, and a green colored layer (G) 2.
Storage electrode lower electrode 13b electrically arranged in parallel with the pixel electrode 24b on the upper electrode 2b, and the blue colored layer (B) 22
The storage capacitor lower electrode 13c electrically arranged in parallel with the pixel electrode 24c on the pixel c. In this embodiment, the area of the auxiliary capacitance lower electrode 13b corresponding to the green colored layer (G) 22b having high visibility is changed to the auxiliary capacitance lower electrode 1b.
3a, 13c, the auxiliary capacitance lower electrode 13a
And 13c have the same area.

Next, a SiOx film to be the gate insulating film 14 is deposited on the entire surface of the transparent substrate 11 by the CVD method. Subsequently, Ta, Cr, Al, Mo, W,
A single element such as Cu or a laminated film or alloy film thereof is deposited, patterned into a predetermined shape by a photoetching method, and the scanning line 15 and the TFT element 30 extending therefrom are patterned.
The scanning electrode 155, the auxiliary capacitor upper electrode 16, the gate electrode of a drive circuit (TFT) not shown, and various wirings in the drive circuit area are formed. Thereby, the storage capacitor lower electrode 1
Auxiliary capacitance upper electrodes 16a, 16b, 16c are formed to face 3a, 13b, 13c via gate insulating film 14.

Thereafter, impurities are implanted by ion implantation or ion doping using these electrodes as a mask, and the source electrode 112 and the drain electrode 113 of the TFT element 30 and the Nch type TF in a drive circuit region (not shown) are formed.
A source electrode and a drain electrode of T are formed.

Next, the TFT element 30 and the Nch-type TFT in the drive circuit region (not shown) are covered with a resist so as not to be doped with impurities, and the scan electrodes of the Pch-type TFT in the drive circuit region (not shown) are masked. Then, boron is implanted at a high concentration to form a source electrode and a drain electrode of the Pch type TFT in the drive circuit region. Then, an Nch-type LDD (Lightly Doped
An impurity is implanted to form a drain, and the impurity is activated by annealing the substrate.

Subsequently, TF is formed by PECVD, for example.
An interlayer insulating film contact hole 18a reaching the source electrode 112 of the T element 30 and an interlayer insulating film contact hole 18b reaching the drain electrode 113, and a drive circuit (T
An interlayer insulating film contact hole reaching the source electrode and the drain electrode of (FT) is formed.

Next, Ta, Cr, Al, MO, W, Cu
Such as a simple substance or a laminated film or an alloy film thereof is deposited, and patterned into a predetermined shape by a photo etching method,
The connection between the signal line 19, the drain electrode 113 of the TFT element 30 and the signal line 19, the source electrode 112, and various wirings of a TFT in a drive circuit region (not shown) are performed. Here, the signal line 19 is connected to the pixel electrode 24a on the red coloring layer (R) 22a.
, A pixel electrode 24b on the green colored layer (G) 22b, and a pixel electrode 24c on the blue colored layer (B) 22c. In this embodiment, the green colored layer (G) 22
The area of the auxiliary capacitance lower electrode 13b electrically arranged in parallel with the pixel electrode 24b on
3a and 13c. Also, the signal lines 19a,
19b and 19c increase the width (WG) of the green pixel in the direction of the scanning line 15 so as to prevent the pixel aperture ratio of the green pixel from lowering and to equalize the pixel aperture ratio of each color, and The pixels are arranged so that the widths (WR, WB) of the pixels are reduced.

Further, after a protective insulating film 20 made of SiNx is formed on the entire surface of the insulating substrate by the PECVD method, a protective insulating film contact hole 21 reaching the pixel electrode 24 is formed by a photoetching method.

Next, an ultraviolet curable acrylic green resist solution is applied to the substrate on which the electrodes are formed by spinner coating. Subsequently, this is pre-baked and exposed using a predetermined mask pattern. The photomask pattern used here has a stripe pattern corresponding to the green coloring layer and a circular pattern as the coloring layer contact hole 23 for connection between the pixel electrode 24 and the source electrode 112. Subsequently, after development water washing, post-baking is performed to form a green colored layer (G) 22b having a colored layer through hole 23b.

Subsequently, a blue colored layer (B) 22c and a red colored layer (R) 22a were formed in the same manner. On this occasion,
The end of the green (G) pattern is covered with a red coloring layer (R) 22a and a blue coloring layer (B) 22c. This is achieved by making the exposure mask used for processing suitable as described above.

Next, indium tin oxide (ITO) is deposited on the coloring layer 22 by a sputtering method, and the pixel electrode 24 is formed by patterning the deposited indium tin oxide (ITO). After that, the spacer pillar 25 and a frame BM (not shown) are formed by a black colored layer. Also in the patterning of the colored layer 22, the stripe width of the green colored layer (G) 22b is increased to correspond to the signal line 19, and the blue colored layer (B) is formed.
The stripes of 22c and the red coloring layer (R) 22a are formed thin.

Thereafter, an alignment film material made of polyimide is applied to the entire surface of the substrate and subjected to an alignment treatment to form an alignment film 26, thereby completing an array substrate 110 having a color filter (colored layer).

Next, ITO is deposited on the transparent substrate 51 by a sputtering method to form a counter electrode 52. Subsequently, an alignment film material made of polyimide is applied to the entire surface of the substrate, and an alignment process is performed to form an alignment film 53. By doing so, the counter substrate 120 is completed.

Subsequently, a sealing material (not shown) is applied to the outer peripheral portion of the counter substrate 120 except for a liquid crystal injection port (not shown). Then, the opposing substrate 120 and the array substrate 110 are attached to each other with a sealing material to complete an empty cell.

Further, a nematic liquid crystal material to which a chiral material is added is vacuum-injected into the cell from an injection port (not shown). After the injection, the injection port is sealed with an ultraviolet-curing resin (not shown) as a sealing material, and then polarizing plates are arranged on both sides of the cell, respectively, to thereby form the liquid crystal display device 10.
To complete.

[Second Embodiment] FIG. 3 is a schematic plan view showing an electrode structure of a liquid crystal display device 100 according to a second embodiment, and FIG. 4 is a schematic sectional view taken along a dashed line CD of FIG. It is. 3 and FIG. 4, the same parts as those in FIG. 1 and FIG.

In the liquid crystal display device 100 of this embodiment,
Regarding the auxiliary capacitance element 130 electrically arranged in parallel with the pixel electrode 24 on each colored layer 22, the auxiliary capacitance upper electrode 1
The width of the auxiliary capacitance lower electrodes 13a, 13b, 13c in the direction of the scanning line 15 is set to 1 without changing the shapes of 6a, 16b, 16c.
3b>13a> 13c. Here, the width of each color coloring layer in the direction of the signal line 19 is not changed. 5 and 6 show a conventional structure for comparison. FIG. 5 is a schematic plan view showing the electrode structure of the conventional device, and FIG.
It is the schematic sectional drawing cut | disconnected along the dashed-dotted line EF of FIG. In the conventional device, the auxiliary capacitance lower electrodes 13a, 13b,
13c width WCsG (13b) in the scanning line 15 direction, WC
sR (13a) and WCsB (13c) are WCsG = WC
While sR = WCsB, in this embodiment, W
CsG>WCsR> WCsB.

The liquid crystal display device 10 configured as described above
In the case of 0, as in the first embodiment, crosstalk when displaying green with high luminosity is improved, so that good display quality can be obtained as a whole. In particular, in the configuration of the second embodiment, the same effect as that of the first embodiment can be obtained without changing the shape of the opening.

In the second embodiment, the storage capacitor lower electrode 1
By setting the area of 3 to 13b>13a> 13c, the overall display quality is improved in a more balanced manner. However, by setting at least 13b> 13a ≧ 13c, the display quality can be improved.

The liquid crystal display device 10 of the second embodiment
0 can be manufactured by the same process as in the first embodiment.

In the first and second embodiments, the structure in which the coloring layer 22 is provided on the array substrate 110 has been described. However, the structure in which the coloring layer 22 is provided on the counter substrate 120 side also has a green (G) color. The same effect can be obtained by making the capacitance of the corresponding auxiliary capacitance element larger than the capacitance of the auxiliary capacitance elements of other colors.

[0050]

As described above, in the liquid crystal display device according to the present invention, the capacity of the auxiliary capacitance element connected to the green pixel electrode having high visibility is made larger than that of the other colors. It is possible to improve the crosstalk when displaying a conspicuous green color. In addition, since an increase in the auxiliary capacitance can be minimized, a good display quality can be obtained while a decrease in the aperture ratio is minimized.

[Brief description of the drawings]

FIG. 1 is a schematic plan view illustrating an electrode structure of a liquid crystal display device according to a first embodiment.

FIG. 2 is a schematic cross-sectional view taken along a dashed line AB in FIG.

FIG. 3 is a schematic plan view showing an electrode structure of a liquid crystal display device according to a second embodiment.

FIG. 4 is a schematic cross-sectional view taken along a dashed line CD of FIG. 3;

FIG. 5 is a schematic plan view showing an electrode structure of a conventional liquid crystal display device.

FIG. 6 is a schematic sectional view taken along a dashed line EF of FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Transparent substrate, 12 ... TFT channel layer, 13 ... Auxiliary capacity lower electrode 14 ... Gate insulating film, 15 ... Scanning line, 16 ... Auxiliary capacity upper electrode 17 ... Interlayer insulating film, 18 ... Interlayer insulating film contact hole, 19 ... Signal line 20: protective insulating film, 21: protective insulating film contact hole, 22: colored layer 23: colored layer contact hole, 24: pixel electrode, 25
... spacer pillars 26 ... alignment film, 51 ... facing glass substrate, 52 ... counter electrode, 53 ... alignment film 110 ... array substrate, 120 ... counter substrate, 130 ... auxiliary capacitance element

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 2H092 JA26 JA46 JB22 JB31 JB51 JB61 KA04 KA05 MA05 MA07 MA12 MA27 MA30 NA07 PA02 PA04 PA08 5C094 AA08 AA09 AA10 BA03 BA43 CA19 CA24 DA13 DB01 DB04 EA04 EA05 EB10 EB10 EB10

Claims (4)

[Claims] 1. A plurality of signal lines and a plurality of scanning lines arranged so as to intersect with each other, a switching element arranged at each intersection of the signal lines and the scanning lines, and the signal line, the scanning lines and the switching. A red, green, and blue coloring layer disposed so as to cover at least a part of the element; and an electrical connection to each of the switching elements via a through hole formed on the coloring layer and formed on the coloring layer. A liquid crystal display device comprising an array substrate including a plurality of pixel electrodes connected to the pixel electrode and auxiliary capacitance elements electrically arranged in parallel with the pixel electrode, wherein the pixel electrode disposed on the green colored layer The capacitance of the auxiliary capacitance element electrically arranged in parallel with the capacitance of the auxiliary capacitance element electrically arranged in parallel with the pixel electrode disposed on the red coloring layer and the blue coloring A liquid crystal display device being greater than the capacitance of the storage capacitor elements arranged in parallel with said pixel electrode electrically disposed thereon. 2. A capacitance (CsG) of an auxiliary capacitance element electrically arranged in parallel with the pixel electrode disposed on the green color.
And a capacitance (CsR) of an auxiliary capacitive element electrically arranged in parallel with the pixel electrode arranged on the red (R), and electrically connected to the pixel electrode arranged on the blue (B). 2. The liquid crystal display device according to claim 1, wherein the relationship between the capacitances (CsB) of the auxiliary capacitance elements arranged in parallel is CsG> CsR ≧ CsB. 3. The width (W) of the red coloring layer in the signal line direction.
R), the width (WG) of the green colored layer in the signal line direction,
The width (WB) of the blue colored layer in the signal line direction is defined as WG> W
3. The liquid crystal display device according to claim 2, wherein R ≧ WB. 4. A pair of electrodes constituting an auxiliary capacitance element electrically arranged in parallel with a pixel electrode disposed on the coloring layer, and one of the electrodes has a shape of red (R), green (G), The area of the other electrode shape is the same for blue (B), and the area of the auxiliary capacitance element (SCsG) electrically connected to the pixel electrode arranged on the green color and the pixel electrode arranged on the red color are The area (SCsR) of the auxiliary capacitive element electrically connected to the pixel electrode and the area (SCsB) of the auxiliary capacitive element electrically connected to the pixel electrode disposed on the blue color are
2. The liquid crystal display device according to claim 1, wherein SCsG> SCsR≥SCsB.