Display panel and display device capable of suppressing reduction in aperture ratio

Abstract

To suppress the reduction in aperture ratio.SOLUTION: A liquid crystal panel 10 comprises an array substrate 30, a counter substrate 20, and spacers 17 for maintaining a gap between the array substrate and the counter substrate. THe array substrate 30 includes source wiring lines 33 extending in a first direction, gate wiring lines 34 extending in a second direction intersecting the first direction, a first electrode row EL1 obtained by pixel electrodes 38 being arrayed in the first direction, a second electrode row EL2 adjacent to the first electrode row EL1 and obtained by the pixel electrodes 38 being arrayed in the first direction, and first light blocking portions 41 arranged at locations overlapping the spacers 17 in a plan view. One of the counter substrate 20 and the array substrate 30 includes a first color filter 22R and a second color filter 22B overlapping the pixel electrodes 38 of the first electrode row EL1 in the plan view and alternately provided in the first direction, and a third color filter 22G overlapping the pixel electrodes 38 of the second electrode row EL2 in the plan view and provided in the first direction. The spacers 17 are provided in the second electrode row EL2.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The technology described in this specification relates to a display panel and a display device that can suppress a decrease in aperture ratio. [Background technology]

[0002] Pixels of display panels such as liquid crystal panels are composed of multiple sub-pixels of different colors. Conventionally, one pixel has been composed of three sub-pixels: red (R), green (G), and blue (B). However, in recent years, a technology (so-called sub-pixel rendering) has been proposed that increases the spec (apparent) resolution with a smaller number of sub-pixels, an example of which is described in Patent Document 1. The liquid crystal panel described in Patent Document 1 achieves sub-pixel rendering by a pixel layout in which the sub-pixels are arranged in a pentile array.

[0003] Patent Document 1 also discloses that spacers for maintaining the distance between two substrates (an array substrate and an opposing substrate) between which a liquid crystal layer is sealed are disposed at the boundaries between subpixels of different colors. By not disposing spacers at specific portions of the boundaries, it is possible to suppress the decrease in aperture ratio that accompanies the disposition of spacers. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-184816 Summary of the Invention [Problem to be solved by the invention]

[0005] In the manufacturing process of a liquid crystal panel, the array substrate and the counter substrate are bonded together with spacers interposed therebetween. During this bonding process, misalignment (misfitting) may occur between the two substrates. The spacers described in Patent Document 1 are positioned at the boundaries between subpixels of different colors. This misalignment can cause variations in the balance of the aperture ratios of the subpixels of each color, potentially resulting in chromaticity that differs from the design value. Furthermore, if the light-shielding portions of the spacers are formed to address this issue while taking into account the misalignment, this actually reduces the aperture ratio.

[0006] The technology described in this specification has been made in consideration of the above-described circumstances, and aims to suppress a decrease in the aperture ratio. [Means for solving the problem]

[0007] (1) A display panel according to the technology described in the present specification includes an array substrate and a counter substrate arranged opposite to each other, and a plurality of spacers for maintaining a distance between the array substrate and the counter substrate. The array substrate includes a plurality of source wirings extending in a first direction, a plurality of gate wirings extending in a second direction intersecting the first direction, a first electrode row in which a plurality of pixel electrodes are arranged along the first direction, a second electrode row adjacent to the first electrode row and in which a plurality of pixel electrodes are arranged along the first direction, and a plurality of first light-shielding portions arranged at positions overlapping the plurality of spacers in a plan view. One of the counter substrate or the array substrate includes first color filters and second color filters overlapping the plurality of pixel electrodes of the first electrode row in a plan view and arranged alternately along the first direction, and a third color filter overlapping the plurality of pixel electrodes of the second electrode row in a plan view and arranged along the first direction. The plurality of spacers are arranged along the second electrode row in which the third color filters are arranged.

[0008] (2) In addition to the above (1), the display panel may be such that the first color filter is a red color filter, the second color filter is a blue color filter, and the third color filter is a green color filter.

[0009] (3) In addition to (1) or (2) above, the display panel may be configured such that the opposing substrate has a second light-shielding portion that overlaps the boundary between the first color filter and the second color filter in a planar view, but does not have a light-shielding portion that overlaps the third color filter in a planar view.

[0010] (4) In addition to the above (3), the display panel may be configured such that the length of the second light-shielding portion in the first direction is greater than the length of the gate line in the first direction.

[0011] (5) In addition to any one of (1) to (4) above, the display panel may be configured such that the spacer and the first light-shielding portion are positioned so as to overlap the gate wiring in a plan view.

[0012] (6) In addition to any one of (1) to (5), the display panel may be configured such that when the gate wirings arranged in order along the first direction are a first gate wiring, a second gate wiring, a third gate wiring, and a fourth gate wiring, the first light-shielding portion in one of the second electrode columns is provided at a position overlapping the first gate wiring and the third gate wiring, and the first light-shielding portion in another of the second electrode columns adjacent to the one of the second electrode columns across the first electrode column is provided at a position overlapping the second gate wiring and the fourth gate wiring.

[0013] (7) In addition to any one of (1) to (6) above, the display panel may further include the array substrate having the first color filter, the second color filter, and the third color filter.

[0014] (8) In addition to (7), the display panel may also be configured such that the length of the third color filter in the second direction is smaller than the length of the first color filter in the second direction and the length of the second color filter in the second direction.

[0015] (9) In addition to any one of (1) to (8), the display panel may further include a liquid crystal layer between the array substrate and the counter substrate.

[0016] (10) A display device according to the technology described in the present specification includes a display panel according to any one of (1) to (10) above. [Effects of the Invention]

[0017] According to the technology described in the present specification, it is possible to suppress a decrease in the aperture ratio. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a liquid crystal display device according to a first embodiment; [Figure 2] Cross section of a liquid crystal panel [Figure 3] Circuit diagram showing pixel arrangement in the display area of ​​the array substrate [Figure 4] FIG. 2 is a plan view showing the layout of source wiring, gate wiring, and spacer light-shielding portions of the array substrate; [Figure 5] A plan view showing the layout of the color filters and black matrix of the opposing substrate, as well as the spacers. [Figure 6] Plan view of the LCD panel with Figures 4 and 5 overlapped [Figure 7] Plan view showing the layout of one subpixel of a liquid crystal panel [Figure 8] Cross-sectional view of the liquid crystal panel taken along line III-III in Figure 7 [Figure 9] Cross-sectional view of the liquid crystal panel taken along line II in Figure 6 [Figure 10] Cross-sectional view of the liquid crystal panel taken along line II-II in Figure 6 [Figure 11]FIG. 1 is a plan view showing the layout of a color filter, a black matrix, and spacers on an opposing substrate according to Comparative Example 1. [Figure 12] 12 is a cross-sectional view of the liquid crystal panel according to Comparative Example 1 taken along line IV-IV in FIG. [Figure 13] FIG. 10 is a plan view showing a liquid crystal panel according to another embodiment; [Figure 14] 13 is a cross-sectional view of the liquid crystal panel taken along line III-III in FIG. 7. [Figure 15] FIG. 10 is a plan view showing a liquid crystal panel according to another embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0019] <Embodiment 1> A liquid crystal display device 100 (an example of a display device) according to embodiment 1 will be described with reference to Fig. 1 to Fig. 10. Note that some of the drawings show X-axis, Y-axis, and Z-axis, and each axis is drawn so that it is a common direction in each drawing. Also, the +Z direction is the front side (display surface side), and the -Z direction is the back side.

[0020] 1, the liquid crystal display device 100 includes a liquid crystal panel 10 (an example of a display panel) that displays images, a driver 12 that drives the liquid crystal panel 10, a control board 16 that supplies various signals to the driver 12, a flexible board 14 that electrically connects the liquid crystal panel 10 and the control board 16, and a backlight device 80 (an example of a lighting device) that is an external light source disposed on the back side of the liquid crystal panel 10 and irradiates the liquid crystal panel 10 with light for display. The liquid crystal panel 10 according to this embodiment is used, for example, in a head-mounted display and has extremely high resolution. The pixel density of the liquid crystal panel 10 is, for example, in the range of approximately 700 ppi to 2000 ppi.

[0021] 1 and 2, the liquid crystal panel 10 has its surface divided into a display area (active area) AA capable of displaying an image and located in the center, and a non-display area (non-active area) NAA located on the outer periphery surrounding the display area AA and having a frame-like (picture frame-like) shape in a plan view. The planar shape of the liquid crystal panel 10 is not limited. Pixels are arranged on the liquid crystal panel 10, and the long side direction of each pixel coincides with the Y direction (an example of a first direction), the short side direction coincides with the X direction (an example of a second direction), and the thickness direction coincides with the Z direction.

[0022] As shown in Fig. 2, the liquid crystal panel 10 includes a pair of substrates 20 and 30 and a liquid crystal layer 18 (an example of a medium layer) containing liquid crystal molecules whose optical properties change when an electric field is applied. A plurality of columnar spacers (photospacers) 17 are provided between the substrates 20 and 30, penetrating the liquid crystal layer 18. The spacers 17 maintain a constant distance (cell gap) between the substrates 20 and 30 across the surface. The substrates 20 and 30 are bonded together with a sealant 11 while maintaining a cell gap equal to the thickness of the liquid crystal layer 18, and the liquid crystal layer 18 is sealed in the internal space. Polarizing plates 19 are attached to the outer surfaces of the substrates 20 and 30, respectively.

[0023] Of the pair of substrates 20, 30, the one disposed on the front side (display surface side) is the counter substrate 20, and the one disposed on the back side is the array substrate (active matrix substrate, TFT substrate) 30. The counter substrate 20 and the array substrate 30 each have a configuration in which various films 20B, 30B are laminated on the inner surface (liquid crystal layer 18 side) of a light-transmitting glass substrate 20A, 30A (an example of an insulating substrate). The counter substrate 20 and the array substrate 30 are manufactured by laminating various films on the glass substrates 20A, 30A while patterning them using a known photolithography method. An alignment film is applied to the top layer of the counter substrate 20 and the array substrate 30 (the layer closest to the liquid crystal layer 18) so as to cover the laminated film formed by the photolithography method.

[0024] The spacers 17 may be formed on either one of the substrates 20, 30 in the manufacturing process, and are formed on the opposing substrate 20 in this embodiment. The spacers 17 are made of a transparent resin material that is cured by light or heat, for example, and are substantially transparent. The resin material is, for example, an organic insulating material such as an acrylic resin (PMMA, etc.) or a polyimide resin. For this reason, at least one of the substrates 20, 30 is formed with a spacer light-shielding portion 41 (an example of a first light-shielding portion) to prevent light leakage from the location where the spacers 17 are disposed. As will be described later, the spacer light-shielding portion 41 according to this embodiment is provided in a position on the array substrate 30 that overlaps with the spacers 17 in a planar view.

[0025] 3, a large number of source wirings (data lines, signal lines) 33 extending in the Y direction and gate wirings (scanning lines) 34 extending in the X direction and intersecting the source wirings 33 are formed in a grid pattern in the display area AA of the array substrate 30. In each area surrounded by the source wirings 33 and the gate wirings 34, TFTs 37 (Thin Film Transistors) serving as switching elements and pixel electrodes 38 are formed. A large number of TFTs 37 and pixel electrodes 38 are arranged in a matrix pattern throughout the entire display area AA.

[0026] A plurality of pixel electrodes 38 arranged in a line along the Y direction constitutes an electrode row. The first electrode row EL1 and the adjacent second electrode row EL2 are alternately arranged along the X direction. As will be described later, red (R) color filters 22R (an example of a first color filter) and blue (B) color filters 22B (an example of a second color filter) provided on the counter substrate 20 are alternately arranged along the first electrode row EL1. Furthermore, green (G) color filters 22G (an example of a third color filter) are arranged along the second electrode row EL2.

[0027] A common electrode 39 (see FIG. 8) to which a reference potential is supplied is provided in the display area AA of the array substrate 30. When a signal is input from the source line 33 and the gate line 34 to the TFT 37, the pixel electrode 38 connected to the TFT 37 is charged, and the potential difference between the pixel electrode 38 and the common electrode 39 changes. By controlling the electric field applied to the liquid crystal layer 18 using this potential difference, the orientation state of the liquid crystal molecules is appropriately switched, and the liquid crystal panel 10 is driven.

[0028] The source wiring 33 is connected to the driver 12 via lead-out wiring, and a data signal (image signal) is supplied to the source wiring 33 from a source drive circuit in the driver 12. The gate wiring 34 is connected to a GDM (Gate Driver Monolithic circuit) section monolithically formed in the non-display area NAA, and a scanning signal is supplied to the gate wiring 34 from the GDM section. The GDM section is connected to the flexible substrate 14 via lead-out wiring, and a signal is supplied from the control substrate 16 through the flexible substrate 14.

[0029] 4 is a plan view showing the layout of the source lines 33, gate lines 34, and spacer light shielding portions 41 of the array substrate 30. The spacer light shielding portions 41 are provided at positions overlapping every other gate line 34 in the second electrode row EL2.

[0030] Furthermore, the gate wiring 34 that overlaps with the spacer light-shielding portion 41 in one second electrode row EL2 does not overlap with the spacer light-shielding portion 41 in another second electrode row EL2 adjacent to the one second electrode row EL2 across the first electrode row EL1. That is, as shown in FIG. 4 , when the multiple gate wirings 34 are arranged in order along the Y direction as the first gate wiring 34A, the second gate wiring 34B, the third gate wiring 34C, and the fourth gate wiring 34D, the spacer light-shielding portion 41 in one second electrode row EL2 is provided at a position overlapping with the first gate wiring 34A and the third gate wiring 34C. Furthermore, the spacer light-shielding portion 41 in the other second electrode row EL2 adjacent to the one second electrode row EL2 across the first electrode row EL1 is provided at a position overlapping with the second gate wiring 34B and the fourth gate wiring 34D.

[0031] 5, a color filter 22 and a black matrix 23 are provided in the display area AA of the counter substrate 20. The color filter 22 includes an R color filter 22R, a G color filter 22G, and a B color filter 22B. Each of the color filters 22R, 22G, and 22B is made of a resin material containing a pigment so that transmitted light exhibits the corresponding color.

[0032] The color filters 22 are arranged at positions overlapping the pixel electrodes 38 of the array substrate 30 in a plan view. The R color filters 22R and B color filters 22B overlap the pixel electrodes 38 of the first electrode column EL1 in a plan view and are arranged alternately along the Y direction. On the other hand, the G color filters 22G overlap the pixel electrodes 38 of the second electrode column EL2 in a plan view and are arranged along the Y direction. A set of one pixel electrode 38 and one of the color filters 22R, 22G, or 22B of any one color that overlaps it forms one subpixel. The subpixels including the color filters 22R, 22G, and 22B are referred to as R, G, and B pixels, respectively.

[0033] In the liquid crystal panel 10 according to this embodiment, a first electrode row EL1 in which R pixels and B pixels are alternately arranged and a second electrode row EL2 in which G pixels are arranged are alternately arranged along the X direction. Furthermore, in two adjacent first electrode rows EL1 sandwiching a second electrode row EL2, the R pixels and B pixels are alternately arranged. That is, the R pixels and B pixels are alternately arranged along the X direction, sandwiching a G pixel therebetween. In other words, the pixel layout of the liquid crystal panel 10 according to this embodiment is a pentile arrangement. Compared to a conventional stripe arrangement in which R, G, and B pixels are arranged along each electrode row, the pentile arrangement reduces the number of subpixels included in one pixel, enabling subpixel rendering, which increases the apparent (specified) resolution.

[0034] 5 and 6, the black matrix 23 is provided at a position overlapping the source wiring 33 and the gate wiring 34 of the array substrate 30 in a plan view. The black matrix 23 is formed to be wider than the source wiring 33 and the gate wiring 34. The black matrix 23 prevents color mixing, which is the mixing of light of different colors transmitted through the color filter 22.

[0035] The portions of the black matrix 23 that overlap the source lines 33 and extend along the Y direction are referred to as first black matrices 23A. The first black matrix 23A is interposed between the R color filter 22R and the G color filter 22G, and between the B color filter 22B and the G color filter 22G, to prevent color mixing.

[0036] Furthermore, the portion of the black matrix 23 that overlaps with the gate wiring 34 and extends along the X direction is referred to as a second black matrix 23B (an example of a second light-shielding portion). The second black matrix 23B is disposed between the R color filter 22R and the B color filter 22B in the portion that overlaps with the gate wiring 34, and prevents color mixing between them. The second black matrix 23B is not provided in the G color filter 22G.

[0037] 5 and 6, a plurality of spacers 17 are provided along the second electrode row EL2 on which the G color filters 22G are arranged. The planar shape of the spacers 17 is not particularly limited, but in this embodiment, they are circular. Similar to the spacer light shielding portions 41 described above, the spacers 17 are provided at positions that overlap with every other gate line 34 in the second electrode row EL2.

[0038] 6, the spacers 17 in one second electrode column EL2 are provided at positions overlapping the first gate line 34A and the third gate line 34C. The spacers 17 in the other second electrode column EL2, which is adjacent to the one second electrode column EL2 across the first electrode column EL1, are provided at positions overlapping the second gate line 34B and the fourth gate line 34D.

[0039] 6, the Y-direction length W3 of the spacer light-shielding portion 41 is sufficiently larger than the Y-direction length (line width) W1 of the gate line 34 and the Y-direction length W2 of the second black matrix 23B, and is larger than the Y-direction length W17 of the spacer 17. That is, the relationship W3>W17>W2>W1 holds. Also, the X-direction length of the spacer 17 (which is the same as W17 in this embodiment because the planar shape of the spacer 17 is circular) is smaller than the distance between the R pixel and the B pixel adjacent to each other in the X direction with the G pixel sandwiched therebetween.

[0040] Next, the planar layout and layer structure of one subpixel of the liquid crystal panel 10 will be described with reference to FIGS. 7 to 10. As shown in FIGS. 7 and 8, the array substrate 30 includes, in order from the glass substrate 30A side, a spacer light-shielding portion 41 made of a first light-shielding film, a base coat film 42, a semiconductor portion (channel region of the TFT 37) 37C and a drain electrode 37D made of a semiconductor film, a gate insulating film 43, a gate wiring 34 (including a gate electrode 37G) made of a gate metal film, a first insulating film 44, a source wiring 33 (including a source electrode 37S) made of a source metal film, a second insulating film 45, a connection electrode 46 made of a first transparent conductive film, a third insulating film 47, a pixel electrode 38 made of a second transparent conductive film, a fourth insulating film 48, a fifth insulating film 49, and a common electrode 39 made of a third transparent conductive film. Note that the spacer 17 is not shown in FIG. 7 to clearly show the other components.

[0041] 7, the pixel electrode 38 is disposed in a region surrounded by two source lines 33 spaced apart in the X direction and two gate lines 34 spaced apart in the Y direction. The pixel electrode 38 has a vertically elongated rectangular shape in a plan view to match the planar shape of this region. The pixel electrode 38 has a contact portion 38A that is connected to the connection electrode 46 via an interlayer connection.

[0042] The semiconductor film has a substantially S-shape in plan view, and the portion overlapping the gate wiring 34 (gate electrode 37G) is inclined with respect to the Y direction, forming a channel region 37C of the TFT 37. The semiconductor film is formed so that the portion other than the portion overlapping the gate wiring 34 functions as a conductive portion. Therefore, one end of the semiconductor film, which is provided at the center position between the two source wirings 33 in the X direction, functions as a drain electrode 37D. The other end of the semiconductor film is connected to the source wiring 33 (source electrode 37S) by a contact portion 33A.

[0043] The connection electrode 46 is provided at a position overlapping the pixel electrode 38, between two source lines 33 spaced apart in the X direction. The connection electrode 46 connects the pixel electrode 38 and the drain electrode 37D. The connection electrode 46 has a vertically elongated rectangular shape in a plan view, and has a contact portion 46A at one end thereof that overlaps with the drain electrode 37D and forms an interlayer connection. The other end of the connection electrode 46 is connected to the contact portion 38A of the pixel electrode 38.

[0044] As shown in FIG. 8, the common electrode 39 is disposed above all the pixel electrodes 38, with a fifth insulating film 49 interposed therebetween.

[0045] The first light-shielding film may be provided in a portion other than the spacer light-shielding portion 41. More specifically, the first light-shielding film may be provided in a portion that becomes the channel region 37C of the TFT 37 (a portion of the semiconductor film that overlaps with the gate electrode 37G in a plan view), but in a portion where the spacer light-shielding portion 41 is not provided. This makes it possible to block light irradiated from the backlight device 80 onto the channel region 37C of the TFT 37 as well. As a result, it is possible to suppress fluctuations in the characteristics of the TFT 37 that may occur when light is irradiated onto the channel region 37C.

[0046] As shown in FIGS. 8 to 10, the counter substrate 20 has a black matrix 23 (first black matrix 23A, second black matrix 23B) made of a second light-shielding film, color filters 22 (red color filter 22R, blue color filter 22B, green color filter 22G), and an overcoat film 25 laminated thereon in this order from the glass substrate 20A side. The overcoat film 25 is formed solidly on the color filters 22. The overcoat film 25 flattens the surface of the counter substrate 20. Note that in FIGS. 9 and 10, the fifth insulating film 49 (see FIG. 8) and the common electrode 39 (see FIG. 8) are not shown.

[0047] The first light-shielding film and the second light-shielding film are made of a light-shielding material, such as a metal (including alloys) such as titanium (Ti) or a black resin. The gate metal film and the source metal film are a single-layer film made of one type of metal material, or a laminated film or alloy made of different types of metal materials, and have conductivity and light-shielding properties. The first transparent conductive film, the second transparent conductive film, and the second transparent conductive film are made of a transparent conductive material, such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide).

[0048] The base coat film 42, gate insulating film 43, first insulating film 44, second insulating film 45, and fifth insulating film 49 are made of inorganic materials (inorganic resin materials), such as single-layer films or multilayer films of SiO (silicon oxide, silicon oxide) or SiN (silicon nitride). The third insulating film 47, fourth insulating film 48, and overcoat film 25 are made of organic materials (organic resin materials), such as PMMA (acrylic resin). The third insulating film 47 and fourth insulating film 48 usually have a larger thickness than other insulating films made of inorganic materials. After the contact portion 46A of the connection electrode 46 is formed, the fourth insulating film 48 fills the contact hole and flattens the surface.

[0049] The semiconductor film is made of an oxide semiconductor material, but may be made of other semiconductor materials, such as an oxide semiconductor material containing at least one metal element selected from the group consisting of In, Ga, and Zn.

[0050] Next, the effects of the liquid crystal panel 10 configured as described above will be described. The liquid crystal panel 10 can achieve so-called Pentile subpixel rendering with the pixel layout described above, thereby achieving apparent high resolution. In this pixel layout, if the spacer 17 is positioned so as to overlap the G color filter 22G in a plan view, the spacer light-shielding portion 41, which is positioned so as to overlap the spacer 17, also overlaps the G color filter 22G in a plan view.

[0051] As a result, the spacer light-shielding portion 41 overlaps the G color filter 22G but does not overlap the R color filter 22R or the B color filter 22B. As a result, the placement of the spacer 17 can prevent a decrease in the aperture ratio of the R and B pixels. On the other hand, the G pixels are arranged along the second electrode column EL2, rather than alternately arranged like the R and B pixels. Therefore, the planar size of the G pixels can be made larger than that of the R and B pixels. Therefore, even if the spacer 17 is placed so as to overlap the G color filter 22G, the aperture ratio of the G pixels can be maintained at a certain level or higher. For example, when the aperture ratios of the R and B pixels are each 1.0, the aperture ratio of the G pixels is preferably 1.3 or more and 2.0 or less. As a result, the aperture ratio (transmittance of white display) of the entire liquid crystal panel 10 can be improved.

[0052] Furthermore, because the spacers 17 are not disposed on the boundaries between subpixels of different colors, it is easy to prevent variations in the aperture ratio of the subpixels of each color from occurring due to misalignment when the array substrate 30 and the counter substrate 20 are bonded together. Therefore, the liquid crystal panel 10 according to this embodiment can achieve subpixel rendering in a Pentile arrangement while preventing both a decrease in the overall aperture ratio and variations in the aperture ratio of the subpixels of each color.

[0053] Furthermore, the second black matrix 23B of the counter substrate 20 is disposed in a position that overlaps the boundary between the R color filter 22R and the B color filter 22B in a plan view, but is not disposed in a position that overlaps the G color filter 22G in a plan view. This makes it easier to further suppress a decrease in the aperture ratio of the G pixels, and improves the transmittance of green, which has a high human visual sensitivity.

[0054] Here, the reason why the decrease in the aperture ratio of G pixels can be further suppressed will be explained with reference to a liquid crystal panel 910 according to Comparative Example 1. As shown in FIGS. 11 and 12, in the liquid crystal panel 910, second black matrices 923B are also provided at the boundaries between G pixels adjacent in the Y direction. In this case, the second black matrices 923B1 that overlap the spacers 17 in a plan view prevent light leakage from the locations where the spacers 17 are provided, eliminating the need to provide spacer light-shielding portions 41 on the array substrate 30. Because the length of the second black matrix 923B1 in the Y direction is the same as the length W3 of the spacer light-shielding portions 41 in the Y direction, this difference does not change the aperture ratio of the G pixels.

[0055] On the other hand, the second black matrix 923B2 in the portion of the boundary between G pixels where the spacers 17 are not provided reduces the change in the aperture ratio of the G pixels. The Y-direction length W2 of the second black matrix 923B2 needs to be greater than the Y-direction length W1 of the gate wiring 34 that overlaps it. More specifically, the Y-direction length W2 of the second black matrix 923B2 needs to be formed so that the following relationship holds: W2 ≥ W1 + 2ΔY, where ΔY is the maximum positional misalignment (maximum fit misalignment) in the Y direction when the array substrate 30 and the counter substrate 20 are bonded together. The maximum fit misalignment ΔY is, for example, approximately 1.0 μm to 2.5 μm. The liquid crystal panel 10 according to this embodiment eliminates the need to enlarge the light-shielding portion by 2ΔY, thereby further suppressing the change in the aperture ratio of the G pixels.

[0056] It is preferable that the lengths of the R and B pixels in the X direction are the same. In this way, even if misalignment in the X direction occurs when bonding the array substrate 30 and the counter substrate 20, causing a change in the aperture ratio of the R and B pixels, these aperture ratios will change at the same rate. As a result, it is possible to prevent the chromaticity from changing from the design value.

[0057] <Embodiment 2> A liquid crystal panel 110 according to embodiment 2 will be described with reference to Figures 13 and 14. This embodiment differs from embodiment 1 in that a color filter 122 and a black matrix 123 are formed on an array substrate 130. Duplicate descriptions of the structure, actions, and effects similar to those of embodiment 1 will be omitted.

[0058] The liquid crystal panel 110 has a so-called COA (Color Filter On Array) structure in which a color filter 122 is provided on an array substrate 130. On the array substrate 130, the color filter 122 is provided between a connection electrode 46 and a third insulating film 47, as shown in Fig. 14. The black matrix 123 is provided below or below the common electrode 39, and is not formed on the counter substrate 120.

[0059] In this way, even if misalignment occurs when bonding the array substrate 130 and the counter substrate 120, the aperture ratio of all the sub-pixels (R pixels, B pixels, and G pixels) will not change, and it is possible to prevent the chromaticity from changing from the design value.

[0060] <Embodiment 3> A liquid crystal panel 210 according to embodiment 3 will be described with reference to Fig. 15. In this embodiment, the length of the G pixels in the X direction is different from that in embodiment 2. Duplicate descriptions of the structure, action, and effects similar to those in embodiments 1 and 2 will be omitted.

[0061] The liquid crystal panel 210 has a COA structure, and the length of the G pixel in the X direction is smaller than the R pixel and the B pixel. That is, the length of the G color filter 222G in the X direction among the color filters 222 is smaller than the length of the R color filter 122R and the B color filter 122B in the X direction.

[0062] As mentioned above, when the aperture ratios of the R and B pixels are each 1.0, the aperture ratio of the G pixels is preferably 1.3 or more and 2.0 or less. With the above configuration, it is easy to adjust the aperture ratio of the G pixels to a small value, for example, 1.3.

[0063] <Other embodiments> The technology described in this specification is not limited to the embodiments described above with reference to the drawings, and the following embodiments, for example, are also included within the technical scope of the present invention.

[0064] (1) The layer configuration and planar layout of each layer of the liquid crystal panels 10, 110, and 210 are not limited to those shown in the drawings. For example, the common electrode 39 may be provided on the counter substrate 20 or 120.

[0065] (2) The technology described in this specification can also be applied to display panels and the like that sandwich functional organic molecules (medium layers) other than the liquid crystal layer 18. [Explanation of symbols]

[0066] 10, 110, 210... liquid crystal panel (display panel), 17... spacer, 18... liquid crystal layer, 20, 120... opposing substrate, 23B, 123B... second black matrix (second light-shielding portion), 22, 122, 222: color filters, 22R, 122R: red color filters (first color filters), 22B, 122B: blue color filters (second color filters), 22G, 122G, 222G: green color filters (third color filters), 30, 130... array substrate, 33... source wiring, 34... gate wiring, 34A... first gate wiring, 34B... second gate wiring, 34C... third gate wiring, 34D... fourth gate wiring, 38... pixel electrode, 41... spacer light-shielding portion (first light-shielding portion), 100... liquid crystal display device (display device), EL1... first electrode row, EL2... second electrode row

Claims

1. an array substrate and an opposing substrate disposed opposite to each other; a plurality of spacers for maintaining a distance between the array substrate and the opposing substrate; The array substrate comprises: a plurality of source lines extending in a first direction; a plurality of gate wirings extending in a second direction intersecting the first direction; a first electrode row in which a plurality of pixel electrodes are arranged along the first direction; a second electrode row adjacent to the first electrode row, in which a plurality of pixel electrodes are arranged along the first direction; a plurality of first light-shielding portions arranged at positions overlapping the plurality of spacers in a plan view; One of the opposing substrate and the array substrate is a first color filter and a second color filter that overlap the pixel electrodes of the first electrode column in a plan view and are alternately arranged along the first direction; a third color filter that overlaps the plurality of pixel electrodes of the second electrode column in a plan view and is provided along the first direction, The display panel, wherein the plurality of spacers are provided along the second electrode column on which the third color filters are arranged.

2. 2. The display panel according to claim 1, wherein the first color filter is a red color filter, the second color filter is a blue color filter, and the third color filter is a green color filter.

3. The opposing substrate is a second light-shielding portion that overlaps a boundary between the first color filter and the second color filter in a plan view; The display panel according to claim 1 , wherein the display panel does not have a light-shielding portion that overlaps the third color filter in a plan view.

4. The display panel according to claim 3 , wherein the length of the second light-shielding portion in the first direction is greater than the length of the gate line in the first direction.

5. 3. The display panel according to claim 1, wherein the spacer and the first light-shielding portion are provided at positions overlapping the gate lines in a plan view.

6. When the gate wirings arranged in order along the first direction are a first gate wiring, a second gate wiring, a third gate wiring, and a fourth gate wiring, the first light-shielding portion in one of the second electrode rows is provided at a position overlapping the first gate wiring and the third gate wiring, 3. The display panel according to claim 1, wherein the first light-shielding portion in the one second electrode column and the other second electrode column adjacent to the one second electrode column and sandwiching the first electrode column is provided at a position overlapping with the second gate wiring and the fourth gate wiring.

7. 3. The display panel according to claim 1, wherein the array substrate comprises the first color filter, the second color filter, and the third color filter.

8. The display panel of claim 7 , wherein the length of the third color filter in the second direction is smaller than the length of the first color filter in the second direction and the length of the second color filter in the second direction.

9. 3. The display panel according to claim 1, further comprising a liquid crystal layer between the array substrate and the counter substrate.

10. A display device comprising the display panel according to claim 1 or 2.

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