JP2008165081A - Liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which has excellent optical characteristics by reducing an influence of disclination. <P>SOLUTION: The liquid crystal display device 10 includes a plurality of pixels 20 corresponding to each of a plurality of colors. Each of the plurality of pixels 20 includes a pixel electrode and a common electrode 130 arranged on the pixel electrode via an insulating film. The common electrode 130 has slits S. The pixel 20 corresponding to the color with the lowest luminous efficacy out of pixels 20 has a slit S coupled with the adjacent pixel 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device.

  In an FFS (Fringe Field Switching) type liquid crystal display device, both a pixel electrode for controlling the alignment of liquid crystal and a common electrode are provided on an element substrate, and these two electrodes are laminated via an insulating film. . Among the electrodes, the upper electrode, that is, the electrode on the liquid crystal layer side is provided with a slit. When the rubbing process is performed substantially parallel to the long side direction of the slit and the potential between the electrodes is an off potential, the liquid crystal molecules are aligned substantially parallel to the long side direction of the slit. When a voltage higher than the off-voltage is applied between the electrodes, an electric field (transverse electric field) is generated in a direction perpendicular to the long side of the slit, and the liquid crystal molecules are in a plane parallel to the substrate along the electric field direction. Rotate with (rotate horizontally). The amount of transmitted light is controlled by controlling the rotation angle of the liquid crystal molecules.

  FIG. 8 is a plan view illustrating a conventional FFS liquid crystal display device. FIG. 8 illustrates the lower electrode 126Z and the upper electrode 130Z for one pixel 20Z, and the upper electrode 130Z is hatched for easy understanding of the drawing. One of the two electrodes 126Z and 130Z is a pixel electrode, and the other is a common electrode. In the liquid crystal display device, the slit SZ of the upper electrode 130Z is provided for each pixel 20Z and is accommodated in the pixel 20Z. In the example of FIG. 8, the rubbing direction AZ is set in a direction inclined by, for example, about 5 ° with respect to the long side direction of the slit SZ.

  Note that an FFS liquid crystal display device is described in Patent Document 1, for example.

JP 2002-296611 A

  When a voltage higher than the off voltage is applied between the two electrodes 126Z and 130Z, an electric field is generated between the electrodes 126Z and 130Z via the slit SZ. Since this electric field is generated perpendicularly to the side of the slit SZ (more specifically, the tangent to the outline) in plan view, the direction of the electric field differs between the long side portion and the short side portion of the slit SZ. For this reason, the liquid crystal molecules rotate laterally in different directions at the central portion SCZ and the end portion SEZ of the slit SZ. The phenomenon in which the direction of rotation varies depending on the location is called disclination. Disclination can occur not only when the slit end SEZ is square as shown in FIG. 8, but also when the slit end SEZ is rounded.

  In the vicinity of the boundary between the regions having different rotation directions (see the broken-line circles in FIG. 8), the liquid crystal molecules rotate in an undesired direction or the liquid crystal molecules cannot rotate, so that the transmittance is lower than the surroundings. The boundary line may be observed due to a decrease in transmittance, and this line is called a disclination line.

  The decrease in transmittance due to disclination has a problem of decreasing the optical characteristics of the liquid crystal display device, for example, the transmittance of the pixels.

  An object of the present invention is to provide a liquid crystal display device capable of reducing the influence of disclination and obtaining good optical characteristics.

  The liquid crystal display device according to the present invention includes a plurality of pixels corresponding to each of a plurality of colors, each of the plurality of pixels including a pixel electrode and a common electrode disposed on the pixel electrode via an insulating film The common electrode has a slit, and a pixel corresponding to a color having the lowest visibility among the pixels has a slit connected to an adjacent pixel.

  The connected slits preferably extend substantially perpendicular to the display signal lines.

  The liquid crystal display device according to the present invention is a liquid crystal display device including pixels corresponding to a plurality of colors in which one picture element is arranged in one direction, and a pixel electrode corresponding to each of the plurality of pixels; A common electrode positioned between the plurality of pixel electrodes and the liquid crystal layer and facing the plurality of pixel electrodes with an insulating film interposed therebetween, the common electrode having a slit connected to the plurality of pixels. The pixels corresponding to the color having the lowest visibility among the plurality of pixels constituting the one picture element are arranged at positions excluding both ends in the array of the plurality of pixels.

  In addition, it is preferable that pixels corresponding to the color having the highest visibility and the second highest color among the plurality of pixels constituting the one picture element are arranged at both ends of the one picture element.

  The color having the lowest visibility is preferably blue.

  With the above configuration, the number of slit ends of the common electrode existing in each pixel can be reduced. In addition, it is possible to prevent a slit end from being present in a pixel corresponding to a color having the lowest visibility among a plurality of colors included in the liquid crystal display device. For this reason, the influence of disclination can be reduced. Therefore, for example, it is possible to increase transmittance, adjust white balance (white chromaticity), expand a color gamut, and the like.

  Embodiments according to the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a plan view illustrating a pixel arrangement of a liquid crystal display device 10 according to an embodiment. For simplification of description, the horizontal direction and the vertical direction in the plan view correspond to the row direction and the column direction on the display surface of the liquid crystal display device 10.

  In the liquid crystal display device 10, the pixels 20 are arranged in a matrix. In the row direction, the pixels 20 that display red (R), blue (B), and green (G) are repeatedly arranged. Note that “R”, “G”, and “B” in the drawing represent the display color (hue) of the pixel 20, and in the following description, for example, the pixel 20 corresponding to red is referred to as “R pixel 20”. Express like this. FIG. 1 illustrates a case where pixels 20 of the same color are arranged in the column direction, and the pixel arrangement in this case is also called a stripe arrangement. It is also possible to arrange the pixels 20 of different colors in the column direction.

  In the liquid crystal display device 10, one picture element 30 is composed of three pixels arranged in the row direction. For this reason, one picture element 30 is composed of three color pixels 20. In FIG. 1, each picture element 30 is surrounded by a thick broken line.

  In the liquid crystal display device 10, in one picture element 30, a B pixel 20 is disposed at the center, and R and G pixels 20 are disposed at both ends. Although the case where the R pixel 20 is located at the left end is illustrated in FIG. 1, the positions of the R pixel 20 and the G pixel 20 may be interchanged.

  FIG. 1 illustrates a case where the pixels 20 are arranged in 2 rows and 9 columns and the picture elements 30 are arranged in 2 rows and 3 columns. In the drawing, the case where each pixel 30 has a vertically long rectangle and each picture element 30 is square is illustrated, but the shapes of the pixel 20 and the picture element 30 are not limited to these.

  FIG. 2 is a plan view for explaining the liquid crystal display device 10. In FIG. 2, the pixel 20 is surrounded by a broken line, and in particular, the picture element 30 is surrounded by a thick broken line. A partially enlarged view of FIG. 2 is shown in FIG. 3, and a sectional view taken along line 4-4 in FIG. 3 is shown in FIG. 2 and 3, some of the elements shown in FIG. 4 are omitted.

  As shown in FIG. 4, the liquid crystal display device 10 includes a liquid crystal panel 12 and a light source 14 arranged so that the liquid crystal panel 12 can be irradiated with emitted light. The liquid crystal panel 12 includes a first substrate 100, a second substrate 200 facing the first substrate 100, and a liquid crystal layer 300 disposed between the substrates 100 and 200. 4 illustrates the case where the light source 14 faces the first substrate 100. For example, the light source 14 is disposed in the vicinity of the edge of the liquid crystal panel 12, and the light emitted from the light source 14 is first generated using the light guide plate. You may comprise so that the board | substrate 100 may be irradiated. Here, a case where the liquid crystal display device 10 is a transmissive or transflective type having the light source 14 is illustrated, but the liquid crystal display device 10 may be a reflective type having no light source 14.

  The first substrate 100 includes a support substrate 110 made of a translucent substrate such as glass. The first substrate 100 further includes a buffer layer 112, an active layer PS, a gate insulating film 114, a gate signal line GL, a common potential line COM, and an inner surface side of the support substrate 110, that is, the liquid crystal layer 300 side. Interlayer insulating film 116, display signal line DL, drain electrode 118, pad electrode 120, passivation film 122, planarization film 124, pixel electrode 126, insulating film 128, common electrode 130, not shown. And an alignment film.

  The buffer layer 112 is disposed on the support substrate 110 and is made of, for example, a silicon oxide film, a silicon nitride film, or the like. The active layer PS is disposed on the buffer film 112 and is provided in the region where the pixel selecting thin film transistor TR is disposed. The active layer PS is made of, for example, polysilicon. The gate insulating film 114 is disposed on the buffer film 112 so as to cover the active layer PS, and is composed of, for example, a silicon oxide film, a silicon nitride film, or the like.

  The gate signal line GL is disposed on the gate insulating film 114 so as to face the active layer PS. The gate signal line GL extends in the row direction as a whole and is provided over the pixels 20 arranged in the row direction. Each portion of the gate signal line GL facing the active layer PS of each pixel 20 forms a gate electrode of the pixel selecting thin film transistor TR. The common potential line COM is disposed on the gate insulating film 114. The common potential line COM extends as a whole in the row direction and is provided over the pixels 20 arranged in the row direction. Each of the gate signal line GL and the common potential line COM is made of, for example, a metal containing chromium or molybdenum.

  The interlayer insulating film 116 is disposed on the gate insulating film 114 so as to cover the gate signal line GL and the common potential line COM. The interlayer insulating film 116 and the gate insulating film 114 are provided with a contact hole CH1 reaching the source region of the active layer PS and a contact hole CH2 reaching the drain region of the active layer PS. The interlayer insulating film 116 is provided with a contact hole CH3 reaching the common potential line COM.

  The display signal line DL is disposed on the interlayer insulating film 116 and extends in the column direction as a whole. The display signal line DL is connected to the source region of the active layer PS through the contact hole CH1. The drain electrode 118 is disposed on the interlayer insulating film 116 and connected to the drain region of the active layer PS through the contact hole CH2. The pad electrode 120 is disposed on the interlayer insulating film 116 and connected to the common potential line COM through the contact hole CH3. The display signal line DL, the drain electrode 118, and the pad electrode 120 are each made of, for example, aluminum or a metal containing an aluminum alloy.

  The passivation film 122 is disposed on the interlayer insulating film 116 so as to cover the display signal lines DL, the drain electrode 118, and the pad electrode 120. The planarization film 124 is disposed on the passivation film 122. The planarization film 124 and the passivation film 122 are provided with a contact hole CH5 reaching the drain electrode 118 and a contact hole CH6 reaching the pad electrode 120.

  The pixel electrode 126 is disposed on the planarization film 124 and is connected to the drain electrode 118 through the contact hole CH5. The pixel electrode 126 is made of a light-transmitting conductive film such as ITO (Indium Tin Oxide). The pixel electrode 126 is provided for each pixel 20, and thus corresponds to the pixel 20. A potential corresponding to the display signal is supplied to the pixel electrode 126 through the display signal line DL.

  The insulating film 128 is disposed on the planarization film 124 so as to cover the pixel electrode 126. The insulating film 128, the planarizing film 124, and the passivation film 122 are provided with a contact hole CH 6 that reaches the pad electrode 120.

  The common electrode 130 is disposed on the insulating film 128 and connected to the pad electrode 120 through the contact hole CH6. Here, the case where the common electrode 130 is provided over all the pixels 20 is illustrated. In addition, each part in each pixel 20 in the common electrode 130 can be regarded as a “common electrode” of the pixel 20, and in this case, each of the plurality of pixels 20 has a “common electrode”. Be captured. The common electrode 130 is made of a light-transmitting conductive film such as ITO. The common electrode 130 is provided with a plurality of slits S in parallel. 2 to 4, the number of slits S is different in order to avoid complexity, and in FIG. 3, the outline of the slit S is indicated by a bold line. An alignment film (not shown) is disposed on the insulating film 128 so as to cover the common electrode 130. The alignment film is rubbed in a direction inclined by, for example, about 5 ° with respect to the long side direction of the slit S.

  As shown in FIG. 2, in the liquid crystal display device 10, the slits S of the common electrode 130 are provided over the three pixels 20 arranged in the row direction. That is, the slits are connected by the adjacent pixels 20. In the liquid crystal display device 10, the slits S extend in the row direction and are substantially perpendicular to the display signal lines DL. The slit S faces each pixel electrode 126 of the three pixels 20. The three pixels 20 sharing the slit S are the R, B, and G pixels 20 constituting one picture element 30 in the liquid crystal display device 10. For this reason, in the liquid crystal display device 10, each slit S is housed in the picture element 30 and does not straddle the adjacent picture elements 30. In the three pixels 20, the end S (see FIG. 3) of the slit S exists in the R and G pixels 20 at both ends, but the slit end SE exists in the center B pixel 20. do not do.

  The first substrate 100 further includes a polarizing plate 108 disposed on the outer surface of the support substrate 110. The polarizing plate 108 makes the light emitted from the light source 14 linearly polarized light.

  The second substrate 200 includes a support substrate 210 made of a translucent substrate such as glass. The second substrate 200 further includes a light shielding film 212, a color filter 214, and an alignment film (not shown) on the inner surface side of the support substrate 210, that is, on the liquid crystal layer 300 side.

  The light shielding film 212 is disposed on the support substrate 210, extends over the entire surface of the support substrate 210, and has an opening at a position facing the pixel electrode 126. The light shielding film 212 is made of, for example, a resin containing a black pigment. The color filter 214 is disposed on the support substrate 210 and is provided in the opening of the light shielding film 212. The color filter 214 colors the light emitted from the light source 14 and defines the display color of the pixel 20. An alignment film (not shown) is disposed on the light shielding film 212 and the color filter 214. The alignment film is rubbed in a predetermined direction in relation to the rubbing direction of the alignment film of the first substrate 100.

  Second substrate 200 further includes a polarizing plate 208 disposed on the outer surface of support substrate 210.

As described above, in the liquid crystal display device 10, the slits S of the common electrode 130 are connected by the three pixels 20 arranged in the row direction, and the slit end portions SE exist in the R and G pixels 20 at both ends. However, the slit end SE does not exist in the center B pixel 20. Here, the visibility of R, B, and G is roughly
R: B: G = 3: 1: 10
There is a ratio relationship. That is, the visibility of G is the highest, the visibility of R is the second highest, and the visibility of B is the lowest.

  Therefore, in the liquid crystal display device 10, the slit S of the B pixel 20 having the lowest visibility is connected to the adjacent pixel 20, and the slit end SE does not exist in the B pixel 20. A slit end SE exists in the G pixel 20 having the highest visibility and in the second highest R pixel 20.

  In the conventional liquid crystal display device (see FIG. 8), the slit SZ of the upper electrode 130Z is provided for each pixel 20Z. For this reason, in each pixel 20Z, two slit end portions SEZ exist for one slit SZ.

  On the other hand, in the liquid crystal display device 10, there is one slit end SE for each of the R and G pixels 20 for one slit S, and for the B pixel 20, the slit end SE. Does not exist. For this reason, each pixel 20 of the liquid crystal display device 10 has a smaller transmittance decrease due to disclination at the slit end SE. That is, according to the pixel 20 of the liquid crystal display device 10, the transmittance, in other words, the luminance can be increased as compared with the conventional pixel 20Z. Comparing the luminance during monochrome display, the R and G pixels 20 increased by about 8%, and the B pixel 20 increased by about 20%. Further, when the luminance was compared when displaying all colors, that is, when displaying white, it increased by about 9%.

  Further, according to the liquid crystal display device 10, a good white balance can be obtained. In the xy chromaticity diagram, for example, the R pixel 20 is x = 0.605 and y = 0.313, the B pixel 20 is x = 0.160, y = 0.067, and the G pixel 20 is x = 0.317. , Y = 0.616, white (W) of the liquid crystal display device 10 was x = 0.302 and y = 0.308. On the other hand, when the values of x and y in the conventional pixel 20Z are the same as those described above, W is x = 0.308 and y = 0.319. When the positions of the B pixel 20 and the G pixel 20 are interchanged in the liquid crystal display device 10, W is x = 0.308 and y = 0.331, and the B pixel 20 and the R pixel 20 When the positions of were replaced, W was x = 0.314 and y = 0.319.

  Moreover, according to the liquid crystal display device 10, it is possible to expand the color gamut while ensuring the luminance. One technique for expanding the color gamut is to increase the saturation of the pixels. The saturation can be adjusted by selecting the color filter 214 (see FIG. 4), but generally the transmittance of the color filter 214 decreases as the saturation increases. However, according to the liquid crystal display device 10 as described above, the luminance of any of the R, B, and G pixels 20 is higher than that of the conventional pixel 20Z. It is possible to ensure the same level of brightness.

  In particular, by increasing the saturation of the B pixel 20 having a large increase in luminance, the color gamut can be made wider than when the saturation of the R and G pixels 20 is increased. In this case, the white balance may be shifted closer to B, but since the visibility of B is lower than that of R and G, the problem is considered to be small in practice.

  One picture element 30 can be composed of pixels 20 of two colors or four colors or more, and a case where one picture element 30 is composed of four color pixels 20 will be exemplified below.

  FIG. 5 is a plan view illustrating a liquid crystal display device 10 </ b> B in which one picture element 30 includes four color pixels 20. In FIG. 5, the pixel 20 is surrounded by a broken line, and in particular, the picture element 30 is surrounded by a thick broken line. Also in the liquid crystal display device 10B, the pixels 20 are arranged in a matrix on the entire display surface, and the four color pixels 20 are repeatedly arranged in the row direction.

Here, a case where the four colors are R, B, G, and cyan (C) is illustrated. The visibility of R, B, G and C is roughly
R: B: G: C = 3: 1: 10: 5
There is a ratio relationship. That is, the visibility of G is the highest and the visibility of C is the second highest. Moreover, the visibility of B is the lowest, and the visibility of R is the second lowest after the visibility of B.

  In the liquid crystal display device 10B, in one picture element 30, C and G pixels 20 are arranged at both ends, and R and B pixels 20 are arranged at two central positions excluding both ends. The positions of the C and G pixels 20 may be reversed from those illustrated in FIG. Further, the positions of the R and B pixels 20 may be reversed from those illustrated in FIG.

In addition, for example, R, B, G, and white (W) can be applied as the four colors. In this case, the W pixel 20 can be configured by not providing the color filter 214 (see FIG. 4) or by providing a colorless resin layer or the like. The visibility of R, B, G and W is roughly
R: B: G: W = 3: 1: 10: 30
There is a ratio relationship. That is, the visibility of W is the highest and the visibility of G is the second highest. Moreover, the visibility of B is the lowest, and the visibility of R is the second lowest after the visibility of B. In this case, within one picture element 30, W and G pixels 20 are arranged at both ends, and R and B pixels 20 are arranged at two central positions excluding both ends.

  Other configurations of the liquid crystal display device 10B can be configured in the same manner as the liquid crystal display device 10, for example.

  The same effect as that of the liquid crystal display device 10 can be obtained by the liquid crystal display device 10B. Note that the color of the pixel 20 is not limited to the above example in any of the three colors and the four colors.

  FIG. 6 is a plan view illustrating a liquid crystal display device 10C in which the pixels 20 are arranged in a delta arrangement. In FIG. 6, the pixel 20 is surrounded by a broken line, and in particular, the picture element 30 is surrounded by a thick broken line. In FIG. 6, only three picture elements 30 are surrounded by thick broken lines in order to avoid complicated drawing.

  In the delta arrangement, one picture element 30 is constituted by three pixels 20 arranged in a delta (Δ) shape. For example, one picture element 30 includes two color pixels 20 adjacent to each other in one row and one color pixel 20 in a row adjacent to the one row. The two-color pixel 20 and the one-color pixel 20 are arranged with a shift of 0.5 pixels in the row direction, thereby forming a delta shape. In the delta arrangement, delta-shaped picture elements 30 that are vertically inverted are alternately arranged in the row direction. When the delta arrangement is viewed as the entire display image, R, B, and G pixels 20 are repeatedly arranged in the row direction as in the matrix arrangement, and adjacent rows are shifted by 1.5 pixels.

  Also in the liquid crystal display device 10C, the slits S of the common electrode 130 are provided over the three pixels 20 arranged in the row direction. Further, in the arrangement of the three pixels 20, the B pixel 20 is arranged at the center where the slit end SE does not exist, and the R and G pixels 20 are arranged at both ends where the slit end SE exists.

  Here, in the liquid crystal display devices 10 and 10B described above, the pixels 20 sharing the slit S constitute the single picture element 30 as they are (see FIGS. 2 and 5). On the other hand, in the delta-arranged liquid crystal display device 10C, the three pixels 20 arranged in the row direction share the slit S but do not constitute one picture element 30 (three surrounded by bold lines in FIG. 6). Pixel 20 and picture element 30 surrounded by a thick broken line). That is, in the delta arrangement, the slit S is not stored in one picture element 30. However, even in the delta arrangement, one picture element 30 is composed of the B pixel 20 in which the slit end SE does not exist and the R and G pixels 20 in which the slit end SE exists. For this reason, the liquid crystal display device 10 </ b> C has the same effect as the liquid crystal display device 10 described above.

  The other configuration of the liquid crystal display device 10C can be configured in the same manner as the liquid crystal display device 10, for example. Also in the case of the delta arrangement, the display color of the pixel 20 is not limited to the above example.

  FIG. 7 is a plan view illustrating the liquid crystal display device 10D. In the liquid crystal display device 10D, the pixels 20 are arranged in a matrix like the liquid crystal display device 10 described above, and the pixels 20 that share the slit S as in the liquid crystal display device 10C do not constitute one picture element 30. (In FIG. 7, the picture element 30 is surrounded by a thick broken line). In the liquid crystal display device 10 </ b> D illustrated in FIG. 7, the G pixel 20 is located at the center of the picture element 30, and the B and R pixels 20 are located at the end of the picture element 30. In each picture element 30 of the liquid crystal display device 10D, the adjacent B and G pixels 20 have slits S connected to each other. On the other hand, in each picture element 30 of the liquid crystal display device 10 </ b> D, the slit S of the R pixel 20 is not connected to the B and G pixels 20 in the picture element 30. The slit S of the R pixel 20 is connected to the B and G pixels 20 of the adjacent picture element 30. However, also in the liquid crystal display device 10D, one picture element 30 is configured by the B pixel 20 in which the slit end SE does not exist and the R and G pixels 20 in which the slit end SE exists. For this reason, the liquid crystal display device 10D has the same effect as the liquid crystal display device 10 described above. The positions of the R and G pixels 20 may be reversed from those illustrated in FIG.

  The other configuration of the liquid crystal display device 10D can be configured in the same manner as the liquid crystal display device 10, for example. Further, the display color of the pixel 20 is not limited to the above example. In addition, one picture element 30 can be composed of pixels 20 of two colors or four colors or more.

  The number of slits S is not limited to the illustrated example. Moreover, although the case where the slit S extends in parallel with the row direction is illustrated in the drawings, the slit S may extend in a direction inclined with respect to the row direction. Moreover, although the case where the slit end SE is a square is illustrated in the drawings, the end SE may be, for example, a rounded shape. Moreover, although the case where the slit S extends straight in the drawing is illustrated, for example, the slit S may be bent in the middle or may be formed in a zigzag shape or curved. May be stretched. Moreover, although the case where the slit S extended | stretched in the row direction was illustrated above, when the pixel 20 of each color is located in a line in the column direction, you may extend the slit S in a column direction. In this case, it is possible to extend the slits S in the column direction in either the matrix arrangement or the delta arrangement.

  Moreover, although the case where the common electrode 130 was provided over all the pixels 20 was illustrated above, the common electrode 130 may be provided for each pixel group sharing the slit S or over a plurality of pixel groups. Further, the pad electrode 120 and the like (see FIGS. 3 and 4) for supplying the potential from the common potential line COM to the common electrode 130 may be provided for each pixel 20, for example, for each common electrode 130. .

It is a top view explaining the 1st example of the liquid crystal display device which concerns on embodiment of this invention. It is a top view explaining the 1st example of the liquid crystal display device which concerns on embodiment of this invention. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. It is a top view explaining the 2nd example of the liquid crystal display device which concerns on embodiment of this invention. It is a top view explaining the 3rd example of the liquid crystal display device concerning an embodiment of the invention. It is a top view explaining the 4th example of the liquid crystal display device concerning an embodiment of the invention. It is a top view explaining the liquid crystal display device of the conventional FFS system.

Explanation of symbols

  10, 10B, 10C, 10D Liquid crystal display device, 20 pixels, 30 picture elements, 126 pixel electrodes, 128 insulating film, 130 common electrode, 300 liquid crystal layer, S slit.

Claims (5)

It has a plurality of pixels corresponding to each of a plurality of colors,
Each of the plurality of pixels includes a pixel electrode, and a common electrode disposed on the pixel electrode via an insulating film,
The common electrode has a slit,
A pixel corresponding to a color having the lowest visibility among the pixels has a slit connected to an adjacent pixel. The liquid crystal display device according to claim 1,
The connected slit extends substantially perpendicularly to the display signal line. A liquid crystal display device including pixels corresponding to a plurality of colors in which one picture element is arranged in one direction,
A pixel electrode corresponding to each of the plurality of pixels;
A common electrode located between the plurality of pixel electrodes and the liquid crystal layer and facing the plurality of pixel electrodes through an insulating film;
With
The common electrode has a slit connected to the plurality of pixels,
A liquid crystal display, wherein pixels corresponding to a color having the lowest visibility among the plurality of pixels constituting the one picture element are arranged at positions excluding both ends in the array of the plurality of pixels. apparatus. The liquid crystal display device according to claim 3,
A liquid crystal display characterized in that pixels corresponding to the color having the highest visibility and the second highest color among the plurality of pixels constituting the one picture element are arranged at both ends of the one picture element. apparatus. The liquid crystal display device according to any one of claims 1 to 4,
A liquid crystal display device characterized in that the color having the lowest visibility is blue.

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