JP2010210676A - Liquid crystal display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device with good display quality that increases an aperture ratio while maintaining a uniform gap between an array substrate and a counter substrate. <P>SOLUTION: The array substrate includes a pixel electrode 230 arranged at a color pixel PX, respectively. The counter substrate 300 includes an insulating substrate 310, a light shielding layer 340 which is arranged on the insulating substrate 310 and surrounds the color pixel PX, and a counter electrode 330 which faces to the pixel electrode 230 through a liquid crystal layer 400 on the insulating substrate 310. The light shielding layer 340 has a wide section 340A extending to one color pixel PX. The array substrate 200 and the counter substrate 300 are arranged with a predetermined gap by a spacer SP, and the spacer SP is arranged so as to face to the wide section 340A. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device, and more particularly to an active matrix liquid crystal display device.

  The liquid crystal display device includes a liquid crystal display panel configured by holding a liquid crystal layer between an array substrate and a counter substrate. The array substrate and the counter substrate are arranged with a gap maintained by a spacer. The liquid crystal layer is disposed between the array substrate and the counter substrate.

  The liquid crystal display panel has a display unit composed of a plurality of display pixels arranged in a matrix. A color display type liquid crystal display device has a plurality of types of color pixels, for example, a red pixel that displays red, a green pixel that displays green, and a blue pixel that displays blue as a plurality of display pixels.

  In such a liquid crystal display device, if a spacer is disposed between the array substrate and the counter substrate, alignment defects of liquid crystal molecules occur in the vicinity of the spacer, leading to deterioration of display quality such as light leakage. there were.

2. Description of the Related Art Conventionally, a technique for disposing a spacer in a region where light is shielded by a black matrix or other light shielding material has been disclosed for the purpose of preventing display quality degradation (see, for example, Patent Document 1). In addition, in a reflective liquid crystal display device, a technique for removing a reflective film in the vicinity of a spacer has been proposed for the purpose of preventing display quality degradation (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2000-2877 JP 2004-177848 A

  In the liquid crystal display device of the color display type as described above, when the spacers are randomly arranged on the red pixel, the blue pixel, and the green pixel, the light shielding layer for preventing light leakage in the vicinity of the spacer is all colors. It needs to be arranged in the pixel. However, when the light shielding layer is arranged for all the color pixels, the light shielding layer is also arranged for the color pixel where the spacer is not arranged. As a result, the aperture ratio of the liquid crystal display device is lowered and the brightness is lowered.

  Further, in the case where the spacers are randomly arranged, if only the pixels on which the spacers are arranged are shielded by the light shielding layer, the color pixels may cause an uneven aperture ratio, resulting in color unevenness.

  The present invention has been made in view of the above-described problems, and provides a liquid crystal display device that improves the aperture ratio and has a good display quality while maintaining a uniform gap between the array substrate and the counter substrate. The purpose is to provide.

  The liquid crystal display device according to the first aspect of the present invention is held between a first substrate, a second substrate disposed so as to face the first substrate, and the first substrate and the second substrate. A liquid crystal display device comprising a liquid crystal layer and a display region composed of a plurality of types of color pixels, wherein the first substrate includes pixel electrodes on which the color pixels are respectively disposed, and the second substrate Comprises an insulating substrate, a light shielding layer disposed on the insulating substrate and surrounding the color pixel, and a counter electrode facing the pixel electrode via the liquid crystal layer on the insulating substrate, and the light shielding The layer has a wide portion extending to one kind of color pixel, and the first substrate and the second substrate are arranged at a predetermined interval by a spacer, and the spacer faces the wide portion. Are arranged to be.

  A liquid crystal display device according to a second aspect of the present invention is held between a first substrate, a second substrate disposed so as to face the first substrate, and the first substrate and the second substrate. A liquid crystal display device comprising a liquid crystal layer and a display region composed of a plurality of types of color pixels, wherein the first substrate includes pixel electrodes on which the color pixels are respectively disposed, and the second substrate Comprises an insulating substrate, a light shielding layer disposed on the insulating substrate and surrounding the color pixel, and a counter electrode facing the pixel electrode via the liquid crystal layer on the insulating substrate, and the light shielding The layer has a wide portion extending to two types of adjacent color pixels, and the first substrate and the second substrate are arranged at a predetermined interval by a spacer, and the spacer has the wide width. It arrange | positions so that a part may be opposed.

  A liquid crystal display device according to a third aspect of the present invention is held between a first substrate, a second substrate disposed so as to face the first substrate, and the first substrate and the second substrate. A liquid crystal display device comprising a liquid crystal layer and a display region composed of a plurality of types of color pixels, wherein the first substrate is disposed on each of the color pixels and provided with an uneven pattern. A pixel electrode having a reflective portion, wherein the second substrate includes an insulating substrate, and a counter electrode disposed on the insulating substrate and facing the pixel electrode through the liquid crystal layer; The pixel electrode disposed in the pixel has a flat portion, the first substrate and the second substrate are disposed at a predetermined interval by a spacer, and the spacer is opposed to the flat portion. Has been placed.

  A liquid crystal display device according to a fourth aspect of the present invention is held between a first substrate, a second substrate disposed so as to face the first substrate, and the first substrate and the second substrate. A liquid crystal display device comprising a liquid crystal layer and a display region composed of a plurality of types of color pixels, wherein the first substrate is disposed on each of the color pixels and provided with an uneven pattern. A pixel electrode having a reflective portion; and a flat portion provided across the adjacent color pixels. The second substrate is disposed on the insulating substrate and the insulating substrate, with the liquid crystal layer interposed therebetween. A counter electrode facing the pixel electrode, wherein the first substrate and the second substrate are arranged at a predetermined interval by a spacer, and the spacer is arranged to face the flat portion. ing.

  According to the present invention, it is possible to provide a liquid crystal display device having an improved aperture ratio and a good display quality while keeping the gap between the array substrate and the counter substrate uniform.

  A liquid crystal display device according to a first embodiment of the present invention will be described below with reference to the drawings. The liquid crystal display device according to this embodiment is a transmissive liquid crystal display device. As shown in FIG. 1, the liquid crystal display device includes a liquid crystal display panel 100 having a substantially rectangular flat plate shape, and a backlight unit BL that illuminates the liquid crystal display panel 100.

  The liquid crystal display panel 100 includes a pair of substrates, that is, an array substrate (first substrate) 200 and a counter substrate (second substrate) 300, and a liquid crystal layer 400 held between the array substrate 200 and the counter substrate 300. Has been. The backlight unit BL is disposed on the array substrate 200 side with respect to the liquid crystal display panel 100, and illuminates the liquid crystal display panel 100 from the array substrate 200 side.

  The array substrate 200 and the counter substrate 300 of the liquid crystal display panel 100 are bonded together with a sealant 110. The liquid crystal display panel 100 includes a display area 120 that displays an image on the inner side surrounded by the sealing material 110. In the case of a color display type liquid crystal display device, the display area 120 is composed of a plurality of types of color pixels PX arranged in a matrix.

  In the liquid crystal display device according to the present embodiment, the display region 120 includes the red pixels PXR that display red, which are the color pixels PX, the green pixels PXG that displays green, and the blue pixels PXB that display blue. That is, in the liquid crystal display device according to the present embodiment, the plurality of types of color pixels PX are three types of red pixels PXR, green pixels PXG, and blue pixels PXB.

  The array substrate 200 includes a plurality of scanning lines Y (1, 2, 3,..., M) arranged along the row direction H of the color pixels PX and the column direction V of the color pixels PX in the display region 120. A plurality of signal lines X (1, 2, 3,..., N), switch elements 220 disposed at intersections of the signal lines X and the scanning lines Y in the color pixels PX, and the color pixels PX. A pixel electrode 230 disposed and connected to the switch element 220.

  In addition, the liquid crystal display panel 100 includes a connection part 131 disposed on the outer peripheral part 130 located outside the display area 120. The connection portion 131 can be connected to a driving IC chip or a flexible wiring board that functions as a signal supply source. In the example shown in FIG. 1, the connection portion 131 is disposed on the extending portion 200 </ b> A of the array substrate 200 that extends outward from the end portion 300 </ b> A of the counter substrate 300.

  Each of the scanning lines Y (1, 2, 3,..., M) arranged in the display area 120 is connected to the connection part 131 via the outer peripheral part 130. Similarly, each of the signal lines X (1, 2, 3,..., N) is connected to the connection portion 131 via the outer peripheral portion 130.

  As shown in FIG. 2, the array substrate 200 includes an insulating substrate 210 having light transmissivity such as glass. The switch element 220 is disposed on the insulating substrate 210 and is configured by a thin film transistor (TFT) including a semiconductor layer formed of, for example, amorphous silicon or polysilicon.

  The gate electrode 222 of the switch element 220 is connected to the scanning line Y (or the gate electrode 222 is formed integrally with the gate line Y). The source electrode 225 of the switch element 220 is connected to the signal line X (or the source electrode 225 is formed integrally with the signal line X). The drain electrode 227 of the switch element 220 is connected to the pixel electrode 230.

  The gate electrode 222 of the switch element 220 is disposed on the insulating substrate 210. The gate electrode 222 is connected to the scanning line Y.

  A semiconductor layer (not shown) of the switch element 220 is disposed on a gate insulating film (not shown). The source electrode 225 and the drain electrode 227 of the switch element 220 are in contact with this semiconductor layer. These source electrode 225 and drain electrode 227 are covered with an insulating film 240. The insulating film 240 is made of, for example, a silicon nitride film (SiN).

  The pixel electrode 230 is disposed on the insulating film 240 corresponding to each color pixel PX. The pixel electrode 230 is electrically connected to the drain electrode 227 through a contact hole formed in the insulating film 240.

  In a transmissive liquid crystal display panel that selectively transmits backlight and displays an image, the pixel electrode 230 transmits light such as indium tin oxide (ITO) or indium zinc oxide (IZO). It is formed of a conductive material having a property.

  The counter substrate 300 includes an insulating substrate 310 having light transmissivity, such as glass, and a counter electrode 330 common to a plurality of types of color pixels PX so as to face the pixel electrode 230 through the liquid crystal layer 400 in the display region 120. I have. On one main surface of the insulating substrate 310 (that is, the surface facing the liquid crystal layer 400), a light shielding layer 340 surrounding each color pixel PX is disposed in the display region 120.

  Further, the counter substrate 300 includes a color filter layer 320 on one main surface of the insulating substrate 310 in the display region 120. The color filter layer 320 includes a red color filter 320R that transmits light of a red main wavelength corresponding to the red pixel PXR, and a green color filter 320G that transmits light of a green main wavelength corresponding to the green pixel PXG. Further, a blue color filter 320B that transmits light having a blue main wavelength corresponding to the blue pixel PXB is provided.

  Such a color filter layer 320 may be provided on the array substrate 200 side. In addition, the counter substrate 300 may include an overcoat layer disposed with a relatively thick film thickness that flattens the unevenness of the surface of the color filter layer 320.

  The counter electrode 330 is disposed in the display region 120 so as to face the pixel electrode 230 with the liquid crystal layer 400 interposed therebetween. The counter electrode 330 is disposed on the light shielding layer 340, that is, on the color filter layer 320. The counter electrode 330 is formed of a light-transmitting conductive material such as ITO or IZO, for example.

  The surfaces of the array substrate 200 and the counter substrate 300 are covered with an alignment film 250 and an alignment film 350, respectively. The array substrate 200 and the counter substrate 300 are arranged with a predetermined gap by a spacer SP. The spacers SP are desirably arranged at a certain ratio or more with respect to the number of color pixels PX in order to keep a constant gap between the array substrate 200 and the counter substrate 300. Here, the spacer SP is disposed between the alignment film 250 and the alignment film 350. The liquid crystal layer 400 is made of a liquid crystal material including liquid crystal molecules sealed between the array substrate 200 and the counter substrate 300.

  For the liquid crystal display panel, optical elements 260 and 360 are provided on the outer surfaces of the array substrate 200 and the counter substrate 300 (that is, the surface opposite to the surface in contact with the liquid crystal layer 400 of the array substrate 200 and the counter substrate 300), respectively. It has been. These optical elements 260 and 360 include a polarizing plate whose polarization direction is set in accordance with the characteristics of the liquid crystal layer 400.

  In the liquid crystal display device according to the present embodiment, the light shielding layer 340 has a wide portion 340A extending to one kind of color pixel PX. Here, the light shielding layer 340 has a wide portion 340A extending to the blue pixel PXB. The color pixel PX is a region surrounded by adjacent signal lines X and adjacent scanning lines Y shown in FIG.

  In the example shown in FIG. 3, the same type of color pixel PX is arranged along the column direction V. Further, the plurality of types of color pixels PX are repeatedly arranged in the row direction H in the order of the red pixel PXR, the green pixel PXG, and the green pixel PXG. Here, the wide portion 340 </ b> A is disposed so as to face one corner where the end sides of the pixel electrode 230 intersect.

  The above-described spacer SP is disposed so as to face the wide portion 340A. That is, the spacer SP is disposed in one type of color pixel PX. Here, the spacer SP is arranged in the blue pixel PXB. The spacers SP may not be arranged on all the blue pixels PXB, and may be arranged regularly or randomly. Here, the spacers SP are arranged every other blue pixel PXB in the column direction V and the row direction H.

  In the liquid crystal display device according to the first embodiment, the wide portion 340A and the spacer SP are arranged in one type of color pixel PX, that is, the blue pixel PXB. The other types of color pixels PX, that is, the red pixel PXR and the green pixel PXG are not arranged with the wide portion 340A, and thus are not shielded, and compared with the case where the wide portion 340A is arranged for all the color pixels PX. Thus, the aperture ratio can be improved.

  Furthermore, in the liquid crystal display device according to the first embodiment, when the red pixel PXR, the green pixel PXG, and the blue pixel PXB are considered as one unit of display pixel, the blue pixel PXB, the red pixel PXR, and the green color are displayed in all the display pixels. The aperture ratios of the pixels PXG are the same.

  That is, since the aperture ratios of the various color pixels PX are the same in all the display pixels, it is possible to prevent occurrence of color unevenness. As described above, in the liquid crystal display device according to the present embodiment, it is possible to prevent the occurrence of color unevenness by forming the spacer SP and the wide portion 340A in one kind of color pixel PX.

  Furthermore, since the blue pixel PXB contributes less to the luminance than the red pixel PXR and the green pixel PXG, when the spacer SP and the wide portion 340A are arranged in the blue pixel PXB as described above, the brightness of the display pixel is increased. Decrease is suppressed.

  That is, according to the liquid crystal display device according to the present embodiment, it is possible to provide a liquid crystal display device that improves the aperture ratio and has a good display quality while keeping the gap between the array substrate 200 and the counter substrate 300 uniform. Can do.

  In the liquid crystal display device according to the first embodiment, the example in which the wide portion 340A and the spacer SP are arranged in the blue pixel PXB has been described. However, the present invention is not limited to this example. Alternatively, it may be arranged in the green pixel PXG. Even in this case, similarly to the above case, it is possible to improve the aperture ratio of the color pixel PX and to prevent occurrence of color unevenness.

  Next, a liquid crystal display device according to a second embodiment will be described with reference to FIG. In the following description, the same components as those of the liquid crystal display device according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In the liquid crystal display device according to the second embodiment, the light shielding layer 340 includes a wide portion 340A extending to two adjacent types of color pixels PX. Here, the light shielding layer 340 includes a wide portion 340A extending to the blue pixel PXB and the red pixel PXR. The wide portion 340A is disposed so as to face the corner where the end of the pixel electrode 230 of the red pixel PXR intersects with the corner where the end of the pixel electrode 230 of the blue pixel PXB intersects. Has been.

  The spacer SP is disposed so as to face the wide portion 340A. That is, the spacer SP is disposed between two adjacent color pixels PX. Here, the spacer SP is disposed between R and the blue pixel PXB. That is, in the liquid crystal display device according to the present embodiment, as shown in FIG. 4, in the thickness direction of the liquid crystal display panel 100 (direction perpendicular to the paper surface of FIG. 4), the signal line X The area where the wide portion 340A extends to each color pixel PX can be reduced compared to the case of the liquid crystal display device according to the first embodiment. Furthermore, the aperture ratio can be improved.

  The spacers SP may not be arranged between all the red pixels PXR and the blue pixels PXB, and may be arranged regularly or randomly. Here, in the column direction V and the row direction H, the spacers SP are arranged every other pair of blue pixels PXB and red pixels PXR.

  When the wide portion 340A and the spacer SP are disposed as described above, the wide portion 340A is not disposed in the red pixel PXR, the green pixel PXG, the green pixel PXG, and the blue pixel PXB. The aperture ratio can be improved as compared with the case where the wide portion 340A is disposed in the color pixel PX.

  Further, similarly to the liquid crystal display device according to the first embodiment, when the red pixel PXR, the green pixel PXG, and the blue pixel PXB are considered as one unit display pixel, the aperture ratio is the same in all the display pixels. Therefore, occurrence of color unevenness can be prevented.

  Furthermore, in the liquid crystal display device according to the present embodiment, in the thickness direction of the liquid crystal display panel 100 (the direction perpendicular to the paper surface of FIG. 4), the region where the spacer SP is disposed overlaps the region where the signal line X is disposed. Therefore, compared with the case of the liquid crystal display device according to the first embodiment, the area where the wide portion 340A extends to the color pixel PX can be reduced. Therefore, the area shielded by the wide portion 340A in the color pixel PX can be reduced. Therefore, the liquid crystal display device according to the present embodiment can further improve the aperture ratio than the liquid crystal display device according to the first embodiment.

  Furthermore, since the blue pixel PXB contributes less to the luminance than the red pixel PXR and the green pixel PXG, the wide portion 340A extends to the blue pixel PXB and other types of color pixels PX as described above. When arranged in this manner, the brightness of the display pixels is suppressed from decreasing.

  That is, according to the liquid crystal display device according to the present embodiment, it is possible to provide a liquid crystal display device that improves the aperture ratio and has a good display quality while keeping the gap between the array substrate 200 and the counter substrate 300 uniform. Can do.

  In the liquid crystal display device according to the second embodiment, the example in which the wide portion 340A and the spacer SP are disposed between the blue pixel PXB and the red pixel PXR has been described. However, the present invention is not limited to this example. The spacer SP may be disposed between the blue pixel PXB and the green pixel PXG and between the red pixel PXR and the green pixel PXG.

  Next, a liquid crystal display device according to a third embodiment will be described with reference to FIGS. The liquid crystal display device according to this embodiment is a reflective liquid crystal display device. Unlike the liquid crystal display devices according to the first and second embodiments described above, the liquid crystal display device according to the present embodiment does not include the backlight unit BL, and the liquid crystal display panel 100 from the counter substrate 300 side of the liquid crystal display panel 100. An image is displayed by reflecting the incident light into the counter substrate 300 side.

  That is, in the liquid crystal display device according to the present embodiment, the pixel electrode 230 is formed of a light-reflecting conductive material such as aluminum (Al) or molybdenum (Mo). An optical element (not shown) is provided on the outer surface of the counter substrate 300.

  In the liquid crystal display device according to the third embodiment, the pixel electrode 230 includes a reflective portion 230A provided with an uneven pattern. That is, the organic insulating film 248 is disposed between the insulating film 240 and the pixel electrode 230 on the array substrate 200. An uneven pattern is formed on the surface of the organic insulating film 248 that contacts the pixel electrode 230. The reflection part 230 </ b> A of the pixel electrode 230 covers the uneven pattern of the organic insulating film 248, so that the uneven pattern is formed on the surface thereof.

  The pixel electrode 230 arranged in one type of color pixel PX has a flat portion 230B. Here, the pixel electrode 230 disposed in the blue pixel PXB has a flat portion 230B. In the example shown in FIG. 6, the same type of color pixels PX are arranged along the column direction V as in the liquid crystal display device according to the first embodiment. The plurality of color pixels PX are repeatedly arranged in the row direction H in the order of the red pixel PXR, the green pixel PXG, and the green pixel PXG. The flat portion 230B is provided at a corner where the end sides of the pixel electrode 230 intersect.

  As shown in FIG. 5, the spacer SP is disposed so as to face the flat portion 230B. That is, the spacer SP is disposed in one type of color pixel PX. The spacers SP may not be arranged on all the blue pixels PXB, and may be arranged regularly or randomly. Here, the spacers SP are arranged every other blue pixel PXB in the column direction V and the row direction H.

  In the liquid crystal display device according to the third embodiment, the flat portion 230B is formed in one type of color pixel PX, that is, a blue pixel PXB. Further, the spacer SP is also arranged in one kind of color pixel PX, that is, the blue pixel PXB.

  As described above, according to the liquid crystal display device according to the present embodiment, the flat pixels 230B are not provided in the other types of color pixels PX, that is, the red pixel PXR and the green pixel PXG. In the green pixel PXG, the reflectance does not decrease, and the aperture ratio can be improved as compared with the case where the flat portions 230B are arranged in all the color pixels PX.

  Furthermore, according to the liquid crystal display device according to the third embodiment, when the red pixel PXR, the green pixel PXG, and the blue pixel PXB are considered as one unit display pixel, as in the first embodiment, in all the display pixels. Since the aperture ratio is the same, it is possible to prevent the occurrence of color unevenness.

  Furthermore, as described above, the blue pixel PXB contributes less to the luminance than the red pixel PXR and the green pixel PXG. Therefore, in the liquid crystal display device according to the third embodiment, the spacer SP and the flat portion 230B are blue. By providing the pixel PXB, it is possible to suppress a decrease in the brightness of the display image.

  That is, according to the liquid crystal display device according to the present embodiment, it is possible to provide a liquid crystal display device that improves the aperture ratio and has a good display quality while keeping the gap between the array substrate 200 and the counter substrate 300 uniform. Can do.

  In the liquid crystal display device according to the third embodiment, the flat portion 230B and the spacer SP are provided in the blue pixel PXB. However, the present invention is not limited to this example, and the flat portion 230B and the spacer SP are included in the red pixel PXR and the green pixel PXG. May be provided.

  Next, a liquid crystal display device according to a fourth embodiment will be described with reference to FIG.

    In the fourth embodiment, the array substrate 200 has a flat portion 230B provided over two adjacent types of color pixels PX. The flat portion 230B includes, for example, a flat electrode portion 230Ba that is a part of the pixel electrode 230 and a flat insulating layer portion 230Bb between the adjacent pixel electrodes 230.

  Here, the array substrate 200 has a flat portion 230B provided over the blue pixel PXB and the red pixel PXR. That is, the flat insulating layer portion 230Bb of the flat portion 230B is disposed on the signal line X disposed between the blue pixel PXB and the red pixel PXR, and the flat electrode portion 230Ba of the flat portion 230B is the pixel of the red pixel PXR. It is provided at the corner where the end of the electrode 230 intersects with the end and the corner where the end of the pixel electrode 230 of the blue pixel PXB intersects.

  The spacer SP is disposed so as to face the flat portion 230B. That is, the spacer SP is arranged over two adjacent color pixels PX. Here, the spacer SP is disposed over the red pixel PXR and the blue pixel PXB.

  That is, in the liquid crystal display device according to the present embodiment, as shown in FIG. 7, in the thickness direction of the liquid crystal display panel 100 (the direction perpendicular to the paper surface of FIG. 7), the region where the flat portion 230B is arranged and the signal line Since the region where X is disposed overlaps, the area of the flat electrode portion 230Ba of the pixel electrode 230 can be reduced compared to the case of the liquid crystal display device according to the third embodiment, and further, The aperture ratio can be improved.

  The spacers SP may not be arranged between all the red pixels PXR and the blue pixels PXB, and may be arranged regularly or randomly. Here, in the column direction V and the row direction H, the spacers SP are arranged every other pair of blue pixels PXB and red pixels PXR.

  When the flat portion 230B is provided as described above, the flat portion 230B is not provided over the red pixel PXR, the green pixel PXG, the green pixel PXG, and the blue pixel PXB, and thus the flat portion 230B is arranged in all the color pixels PX. Compared with the case where it was done, a reflectance does not fall and an aperture ratio can be improved.

  Further, as in the first embodiment, when the red pixel PXR, the green pixel PXG, and the blue pixel PXB are considered as one unit of display pixel, the aperture ratio is the same in all the display pixels, so that the color unevenness Occurrence can be prevented.

  Further, in the liquid crystal display device according to the present embodiment, the flat portion 230B is disposed over the plurality of color pixels PX and has the flat insulating layer portion 230Bb, so that the surface of the pixel electrode 230 has a flat region. Can be small. Therefore, it is possible to reduce a region where the reflectance is lowered by the flat portion 230B in the color pixel PX. Therefore, in the liquid crystal display device according to the present embodiment, the aperture ratio can be further improved as compared with the liquid crystal display device according to the third embodiment.

  Furthermore, since the blue pixel PXB contributes less to the luminance than the red pixel PXR and the green pixel PXG, the flat portion 230B is different from the blue pixel PXB in other types as in the liquid crystal display device according to the fourth embodiment. By providing over the color pixels, it is possible to further suppress the brightness of the display image from being lowered.

  That is, according to the liquid crystal display device according to the present embodiment, it is possible to provide a liquid crystal display device that improves the aperture ratio and has a good display quality while keeping the gap between the array substrate 200 and the counter substrate 300 uniform. Can do.

  In the liquid crystal display device according to the fourth embodiment, the flat portion 230B and the spacer SP are provided in the blue pixel PXB and the red pixel PXR. However, the flat portion 230B and the spacer SP are not limited to this example. It may be provided in PXB, green pixel PXG, red pixel PXR, and green pixel PXG. Even in that case, the same effect as the liquid crystal display device according to the above-described embodiment can be obtained.

  The liquid crystal display devices according to the first and second embodiments are transmissive liquid crystal display devices, and the liquid crystal display devices according to the third and fourth embodiments are reflective liquid crystal display devices. However, the present invention is not limited to this example, and the present invention may be applied to a transflective liquid crystal display device.

  In the case of a transflective liquid crystal display device, for example, a flat portion 230B is formed on the pixel electrode 230 of the reflective portion of the color pixel PX, and a spacer SP is disposed, so that the space between the array substrate 200 and the counter substrate 300 is increased. It is possible to provide a liquid crystal display device that improves the aperture ratio and maintains good display quality while keeping the gap uniform.

  As described above, according to the liquid crystal display device according to the present embodiment, the gap between the array substrate 200 and the counter substrate 300 is kept uniform, the aperture ratio is improved, and the display quality is good. An apparatus can be provided.

  In addition, this invention is not limited to the said embodiment itself, In the stage of implementation, it can change and implement a component within the range which does not deviate from the summary. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

FIG. 1 is a diagram schematically showing a configuration example of a liquid crystal display panel of a liquid crystal display device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing an example of the structure of the liquid crystal display panel shown in FIG. FIG. 3 is a plan view schematically showing an example of the configuration of the display area of the first embodiment. FIG. 4 is a plan view schematically showing the configuration of the display area of the second embodiment. FIG. 5 is a cross-sectional view schematically showing the structure of the liquid crystal display panel according to the third embodiment. FIG. 6 is a plan view schematically showing the configuration of the display area of the third embodiment. FIG. 7 is a plan view schematically showing the configuration of the display area of the fourth embodiment.

PX ... color pixel 120 ... display area 200 ... array substrate 240 ... insulating film 230 ... pixel electrode 330 ... counter electrode 300 ... counter substrate 310 ... insulating substrate 400 ... liquid crystal layer spacer ... SP light shielding layer ... 340 wide portion ... 340A reflector ... 230A Flat part ... 230B

Claims (10)

A first substrate, a second substrate disposed so as to face the first substrate, a liquid crystal layer held between the first substrate and the second substrate, and a plurality of types of color pixels. A liquid crystal display device comprising:
The first substrate includes pixel electrodes arranged on the color pixels,
The second substrate is an insulating substrate;
A light shielding layer disposed on the insulating substrate and surrounding the color pixel;
A counter electrode facing the pixel electrode through the liquid crystal layer on the insulating substrate;
The light shielding layer has a wide portion extending to one kind of color pixel,
The first substrate and the second substrate are arranged at a predetermined interval by a spacer,
The said spacer is a liquid crystal display device arrange | positioned so as to oppose the said wide part. The plurality of types of color pixels include blue pixels that display blue,
The liquid crystal display device according to claim 1, wherein the wide portion extends to the blue pixel. A first substrate, a second substrate disposed so as to face the first substrate, a liquid crystal layer held between the first substrate and the second substrate, and a plurality of types of color pixels. A liquid crystal display device comprising:
The first substrate includes pixel electrodes arranged on the color pixels,
The second substrate is an insulating substrate;
A light shielding layer disposed on the insulating substrate and surrounding the color pixel;
A counter electrode facing the pixel electrode through the liquid crystal layer on the insulating substrate;
The light-shielding layer has a wide portion extending to two types of adjacent color pixels,
The first substrate and the second substrate are arranged at a predetermined interval by a spacer,
The said spacer is a liquid crystal display device arrange | positioned so as to oppose the said wide part. The plurality of types of color pixels include a blue pixel that displays blue and a red pixel that displays red,
The liquid crystal display device according to claim 3, wherein the wide portion extends to the blue pixel and the red pixel. The plurality of types of color pixels include a blue pixel that displays blue and a green pixel that displays green.
The liquid crystal display device according to claim 3, wherein the wide portion extends to the blue pixel and the green pixel. A first substrate, a second substrate disposed so as to face the first substrate, a liquid crystal layer held between the first substrate and the second substrate, and a plurality of types of color pixels. A liquid crystal display device comprising:
The first substrate includes a pixel electrode disposed on each of the color pixels and having a reflective portion provided with a concavo-convex pattern,
The second substrate is
An insulating substrate;
A counter electrode disposed on the insulating substrate and facing the pixel electrode through the liquid crystal layer,
The pixel electrode arranged in one type of color pixel has a flat portion,
The first substrate and the second substrate are arranged at a predetermined interval by a spacer,
The said spacer is a liquid crystal display device arrange | positioned so that the said flat part may be opposed. The plurality of types of color pixels include blue pixels that display blue,
The liquid crystal display device according to claim 6, wherein the flat portion is formed in the blue pixel. A first substrate, a second substrate disposed so as to face the first substrate, a liquid crystal layer held between the first substrate and the second substrate, and a plurality of types of color pixels. A liquid crystal display device comprising:
The first substrate includes a pixel electrode that is disposed on each of the color pixels and has a reflective portion provided with a concavo-convex pattern, and a flat portion provided across the adjacent color pixels,
The second substrate is
An insulating substrate;
A counter electrode disposed on the insulating substrate and facing the pixel electrode through the liquid crystal layer,
The first substrate and the second substrate are arranged at a predetermined interval by a spacer,
The said spacer is a liquid crystal display device arrange | positioned so that the said flat part may be opposed. The plurality of types of color pixels include a blue pixel that displays blue and a red pixel that displays red,
The liquid crystal display device according to claim 8, wherein the flat portion is disposed over the blue pixel and the red pixel. The plurality of types of color pixels include a blue pixel that displays blue and a green pixel that displays green.
The liquid crystal display device according to claim 8, wherein the flat portion is disposed across the blue pixel and the green pixel.

Images