Display device and color filter substrate

Abstract

To provide a display device capable of suppressing reduction in display quality, and a color filter substrate.SOLUTION: A display device includes: a first substrate including a plurality of pixels arranged in first and second directions; a second substrate including a plurality of color filters corresponding to the plurality of pixels and a light shielding layer; and a liquid crystal layer held between the first and second substrates. The plurality of pixels include a plurality of first pixels arranged in a direction oblique to the first and second directions, and a plurality of second pixels adjacent to the plurality of first pixels in the first direction and arranged in an oblique direction. The plurality of color filters include a first color filter extending in an oblique direction so as to be superimposed on the plurality of first pixels, and a second color filter extending in an oblique direction so as to be superimposed on the plurality of second pixels. The light shielding layer extends in an oblique direction so as to be superimposed on a boundary part between the first and second color filters.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present embodiment relates to a display device and a color filter substrate. [Background technology]

[0002] Generally, a display device is known that includes an array substrate (TFT substrate) on which switching elements such as thin film transistors (TFTs) are arranged, a color filter substrate on which color filters are arranged, and a liquid crystal layer held between the array substrate and the color filter substrate.

[0003] When realizing high definition in such a display device, the display quality of the display device may be degraded depending on, for example, the pattern of the color filters formed on the color filter substrate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 6-273614 [Patent Document 2] JP 2006-293385 A [Patent Document 3] Patent No. 3329206 [Patent Document 4] JP 2021-026040 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an object of the present invention is to provide a display device and a color filter substrate capable of suppressing a decrease in display quality. [Means for solving the problem]

[0006] The display device according to the embodiment includes a first substrate having a plurality of pixels arranged in a matrix in a first direction and a second direction, a second substrate facing the first substrate and having a plurality of color filters corresponding to the plurality of pixels and a light-shielding layer, and a liquid crystal layer held between the first substrate and the second substrate. The plurality of pixels include a plurality of first pixels arranged in a diagonal direction with respect to the first direction and the second direction, and a plurality of second pixels adjacent to each of the plurality of first pixels in the first direction and arranged in the diagonal direction. The plurality of color filters include a first color filter extending in the diagonal direction so as to overlap with the plurality of first pixels, and a second color filter extending in the diagonal direction so as to overlap with the plurality of second pixels. The light-shielding layer extends in the diagonal direction so as to overlap with a boundary portion between the first color filter and the second color filter. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic exploded perspective view of a display device according to a first embodiment. [Diagram 2] FIG. 2 is a schematic plan view of a display panel. [Diagram 3] FIG. 4 is a schematic plan view showing an example of a layout of sub-pixels. [Figure 4] FIG. 2 is a schematic cross-sectional view of a display panel. [Diagram 5] FIG. 4 is a schematic plan view showing some of the elements arranged on the first substrate in the display region. [Figure 6] 4 is a diagram showing the arrangement of openings formed in a plurality of sub-pixels in a plan view. FIG. [Figure 7] 4 is a diagram showing the positional relationship between openings formed in a plurality of sub-pixels and color filters in a plan view. FIG. [Figure 8] FIG. 2 is a diagram for explaining the arrangement of a black matrix. [Figure 9] FIG. 11 is a diagram showing an example of the arrangement of a black matrix in the second embodiment. [Figure 10] FIG. 13 is a diagram showing another example of the arrangement of the black matrix. [Figure 11] FIG. 13 is a diagram showing yet another example of the arrangement of the black matrix. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Each embodiment will be described below with reference to the drawings. The disclosure is merely an example, and those who are skilled in the art can easily conceive of appropriate modifications while keeping the gist of the invention are naturally included in the scope of the present invention. In addition, the drawings may be represented more diagrammatically than the actual embodiment in order to make the explanation clearer, but they are merely examples and do not limit the interpretation of the present invention. In addition, in each figure, the reference numerals may be omitted for identical or similar elements arranged consecutively. In addition, in this specification and each figure, the same reference numerals may be used for components that perform the same or similar functions as those described above with respect to the previous figures, and duplicate detailed descriptions may be omitted.

[0009] (First embodiment) 1 is a schematic exploded perspective view of a display device 1 according to a first embodiment. As shown in the figure, an X direction, a Y direction, and a Z direction are defined. In this embodiment, the X, Y, and Z directions are perpendicular to each other, but may intersect at an angle other than perpendicular. Viewing the display device 1 and its components parallel to the Z direction is referred to as a plan view. The direction indicated by the Z arrow may be referred to as the upward direction, and the opposite direction may be referred to as the downward direction.

[0010] The display device 1 includes a display panel 2 and a backlight 3. In the example shown in Fig. 1, the backlight 3 is a side-edge type that includes a light guide LG facing the display panel 2 and a plurality of light-emitting elements LS facing the side surface of the light guide LG. However, the configuration of the backlight 3 is not limited to the example shown in Fig. 1, and may be any configuration that supplies light necessary for image display.

[0011] 1, the display panel 2 and the light guide LG are both formed in a rectangle having a short side along the X direction and a long side along the Y direction. The display panel 2 and the light guide LG are not limited to a rectangular shape and may have other shapes.

[0012] The display panel 2 is a transmissive liquid crystal panel and includes a first substrate SUB1 (array substrate), a second substrate SUB2 (opposing substrate) opposed to the first substrate SUB1, and a liquid crystal layer LC sealed (held) between the first and second substrates SUB1 and SUB2. The display panel 2 has, for example, a rectangular display area DA.

[0013] The display device 1 further includes an optical sheet group 4, a first polarizing plate 5, and a second polarizing plate 6. The optical sheet group 4 is disposed between the light guide LG and the display panel 2. For example, the optical sheet group 4 includes a diffusion sheet DF that diffuses the light emitted from the light guide LG, and a first prism sheet PR1 and a second prism sheet PR2 on which a large number of prisms are formed.

[0014] The first polarizing plate 5 is disposed between the optical sheet group 4 and the first substrate SUB1. The second polarizing plate 6 is disposed above the second substrate SUB2. The polarization axis of the first polarizing plate 5 and the polarization axis of the second polarizing plate 6 are in a crossed Nicol relationship in which they are perpendicular to each other.

[0015] The display device 1 can be used in various devices (electronic devices), such as in-vehicle devices, smartphones, tablet terminals, mobile phone terminals, personal computers, television receivers, game devices, and even head-mounted displays that display images for VR (Virtual Reality).

[0016] Fig. 2 is a schematic plan view of the display panel 2. The display panel 2 has a display area DA and a peripheral area SA surrounding the display area DA. In the example shown in Fig. 2, the bottom side of the first substrate SUB1 in the figure protrudes in the Y direction further than the second substrate SUB2. As a result, a mounting area MA that does not overlap with the second substrate SUB2 is formed on the first substrate SUB1. The mounting area MA is part of the peripheral area SA.

[0017] In the display area DA, a plurality of pixels PX are arranged in a matrix (rows and columns). In the facial expression device 1 according to this embodiment, sub-pixel rendering is applied to artificially increase the resolution. In this case, the pixel PX includes a plurality of sub-pixels. In this embodiment, the pixel PX includes, as an example, a red sub-pixel SPR, a green sub-pixel SPG, and a blue sub-pixel SPB. However, the pixel PX may also include sub-pixels of other colors, such as white.

[0018] The display panel 2 includes a plurality of scanning lines G, a plurality of signal lines (video lines) S, a first scanning driver GD1, a second scanning driver GD2, and a selector circuit ST. The plurality of scanning lines G extend in the X direction and are arranged in the Y direction. The plurality of signal lines S extend in the Y direction and are arranged in the X direction. Each scanning line G is connected to at least one of the first scanning driver GD1 and the second scanning driver GD2. Each signal line S is connected to the selector circuit ST.

[0019] 2, the controller CT is mounted in the mounting area MA. A terminal portion T is provided in the mounting area MA, and a flexible circuit board F is connected to the terminal portion T. The controller CT may be mounted on the flexible circuit board F. The controller CT may be configured by an IC or various circuit elements.

[0020] The flexible circuit board F inputs various signals sent from a board of an electronic device on which the display device 1 is mounted to the controller CT. Based on the input signals, the controller CT supplies video signals to the selector circuit ST and controls the first scan driver GD1, the second scan driver GD2, and the selector circuit ST. The first scan driver GD1 and the second scan driver GD2 sequentially supply scan signals to each scan line G. The selector circuit ST sequentially supplies the input video signals to the signal lines S.

[0021] Each pixel PX includes a pixel electrode PE, a switching element SW (thin film transistor), and a common electrode CE to which a common voltage is supplied. The switching element SW is connected to the pixel electrode PE, a scanning line G, and a signal line S, and supplies a video signal of the signal line S to the pixel electrode PE when a scanning signal is supplied to the scanning line G. The common electrode CE is formed across a number of sub-pixels. When a video signal is supplied to the pixel electrode PE, a potential difference is formed between the pixel electrode PE and the common electrode CE, and the resulting electric field acts on the liquid crystal layer LC.

[0022] In this embodiment, the scanning lines G, signal lines S, first scanning driver GD1, second scanning driver GD2, selector circuit ST, switching elements SW, pixel electrodes PE and common electrode CE are all formed on the first substrate SUB1.

[0023] 3 is a schematic plan view showing an example of the layout of subpixels SPR, SPG, and SPB (pixel PX). The subpixel SPR is configured to display red by arranging a red color filter CFR as a color filter corresponding to the subpixel SPR. The subpixel SPG is configured to display green by arranging a green color filter CFG as a color filter corresponding to the subpixel SPG. The subpixel SPB is configured to display blue by arranging a blue color filter CFB as a color filter corresponding to the subpixel SPB.

[0024] In the example shown in Fig. 3, the subpixels SPR, SPG, and SPB are arranged in this order in the X direction. In addition, the subpixels SPR, SPB, and SPG are arranged in this order in the Y direction. As a result, the multiple subpixels SPR are arranged in a diagonal direction intersecting the X direction and the Y direction. In addition, the multiple subpixels SPG are adjacent to each of the multiple subpixels SPR in the X direction, and are arranged in a diagonal direction similar to the multiple subpixels SPR. Furthermore, the multiple subpixels SPB are adjacent to each of the multiple subpixels SPG in the X direction, and are arranged in a diagonal direction similar to the multiple subpixels SPR and SPG.

[0025] In this embodiment, it is sufficient that the sub-pixels SPR, SPG, and SPB are arranged in the diagonal direction as described above (i.e., arranged in a mosaic pattern), and the sub-pixels SPR, SPG, and SPB may be arranged in a diagonal direction different from that in Fig. 3. The aspect ratio of the sub-pixels SPR, SPG, and SPB may be designed to be, for example, 1:2 or 2:3.

[0026] Fig. 4 is a schematic cross-sectional view of the display panel 2. The first substrate SUB1 includes the above-mentioned signal lines S, switching elements SW, pixel electrodes PE, and common electrodes CE. Although not shown in Fig. 4, the first substrate SUB1 also includes the above-mentioned scanning lines G.

[0027] Furthermore, the first substrate SUB1 includes a first insulating base material 10, a first insulating layer 11, a second insulating layer 12, a third insulating layer 13, a fourth insulating layer 14, an organic insulating layer 15, and a first alignment film 16.

[0028] The first insulating base material 10 is formed of, for example, glass, but may be formed of a resin material such as polyimide. The first to fourth insulating layers 11 to 14 are formed of an inorganic material such as silicon nitride or silicon oxide. The organic insulating layer 15 is formed of an organic material such as acrylic resin. The pixel electrodes PE and the common electrode CE are formed of a transparent conductive material such as ITO. The scanning lines G and the signal lines S are formed of a metal material. The scanning lines G and the signal lines S may have a single-layer structure formed of a single metal material, or may have a multi-layer structure in which different types of metal materials are laminated.

[0029] The first insulating layer 11 covers the upper surface (the surface on the second substrate SUB2 side) of the first insulating base material 10. A semiconductor layer SC such as polysilicon that is provided in the switching element SW is disposed on the first insulating layer 11. The second insulating layer 12 covers the semiconductor layer SC and the first insulating layer 11.

[0030] Although not shown in Fig. 4, the scanning line G is disposed on the second insulating layer 12. The scanning line G and the semiconductor layer SC cross at least once. The third insulating layer 13 covers the scanning line G and the second insulating layer 12. The signal line S is disposed on the third insulating layer 13. The signal line S is in contact with the semiconductor layer SC through a contact hole that penetrates the second insulating layer 12 and the third insulating layer 13.

[0031] The organic insulating layer 15 covers the signal lines S and the third insulating layer 13. The organic insulating layer 15 is formed to be thicker than the first to fourth insulating layers 11 to 14. The organic insulating layer 15 flattens unevenness caused by the switching elements SW and the like.

[0032] The pixel electrode PE is disposed on the organic insulating layer 15. The pixel electrode PE is in contact with the semiconductor layer SC through a contact hole (not shown) that penetrates the organic insulating layer 15. Another conductive layer may be interposed between the pixel electrode PE and the semiconductor layer SC.

[0033] The fourth insulating layer 14 covers the pixel electrodes PE and the organic insulating layer 15. A common electrode CE is disposed on the fourth insulating layer 14. The common electrode CE has a slit SL that overlaps with the pixel electrodes PE in a plan view. The common electrode CE is covered with a first alignment film 16.

[0034] The second substrate SUB2 includes a second insulating base material 20 formed of the same material as the first insulating base material 10, a black matrix BM (light-shielding layer), color filters CFR, CFG and CFB, an organic insulating layer 21, and a second alignment film 22.

[0035] The black matrix BM is disposed on the lower surface of the second insulating base material 20 (the surface on the first substrate SUB1 side).

[0036] The color filters CFR, CFG, and CFB are disposed below the second insulating substrate 20 and the black matrix BM.

[0037] The organic insulating layer 21 covers the color filters CFR, CFG, and CFB. The organic insulating layer 21 flattens unevenness caused by the color filters CFR, CFG, and CFB. The organic insulating layer 21 is covered with a second alignment film 22.

[0038] The first substrate SUB1 and the second substrate SUB2 are bonded together in the peripheral area SA by a ring-shaped sealant A liquid crystal layer LC is sealed between the first substrate SUB1 and the second substrate SUB2.

[0039] When a video signal is supplied to the pixel electrode PE in the above-described display device 1, an electric field is formed between the pixel electrode PE and the common electrode CE. This electric field acts on the liquid crystal layer LC through the slit SL, thereby controlling the orientation of the liquid crystal molecules contained in the liquid crystal layer LC.

[0040] Fig. 5 is a schematic plan view showing some of the elements arranged on the first substrate SUB1 in the display area DA. Fig. 5 focuses on one subpixel, and shows two scanning lines G extending in the X direction and adjacent to each other in the Y direction, and two signal lines S extending in the Y direction and adjacent to each other in the X direction. In the display area DA, an opening APX surrounded by these two scanning lines G and two signal lines S is formed for each subpixel. The pixel electrode PE overlaps most of the opening APX.

[0041] 5, the common electrode CE has one slit SL in a region overlapping with the aperture APX. The slit SL includes, for example, a plurality of portions inclined with respect to the X direction and the Y direction. Note that a plurality of slits SL may be provided for one aperture APX.

[0042] Here, when realizing high definition in a display device 1 in which a first substrate SUB1 (array substrate) and a second substrate SUB2 (color filter substrate) are bonded together as described above, the display quality of the display device 1 may be degraded depending on the patterns of the color filters CFR, CFG, and CFB.

[0043] Specifically, when the sub-pixels SPR, SPG, and SPB are arranged in a mosaic pattern as described in FIG. 3, the color filters CFR, CFG, and CFB corresponding to the sub-pixels SPR, SPG, and SPB, respectively, must be formed as a single pattern, but if the patterning accuracy of the color filters CFR, CFG, and CFB is insufficient, the color filters CFR, CFG, and CFB may fall off from a part of the opening APX formed in the sub-pixels SPR, SPG, and SPB, causing a blank area. In addition, when color filters of the same color formed in a diagonal direction as a single pattern are connected, the connection part may overlap with the opening APX formed in the sub-pixel adjacent in the X direction, or the film thickness of the connection part may become thick, causing problems such as breaking through the overcoat layer (organic insulating layer 21).

[0044] For this reason, in this embodiment, a configuration is proposed that suppresses degradation of the display quality in the display device 1 that may occur due to the patterns (shapes, arrangements, etc.) of the above-mentioned color filters CFR, CFG, and CFB.

[0045] Here, Fig. 6 shows the arrangement of openings APX(R), APX(G) and APX(B) formed in multiple sub-pixels SPR, SPG and SPB in a plan view. Here, it is assumed that multiple sub-pixels SPR, SPG and SPB are arranged as shown in Fig. 3 above. Opening APX(R) is an opening formed in multiple sub-pixels SPR shown in Fig. 3. Opening APX(G) is an opening formed in multiple sub-pixels SPG shown in Fig. 3. Opening APX(B) is an opening formed in multiple sub-pixels SPB shown in Fig. 3.

[0046] Although not shown in FIG. 6, the openings APX(R), APX(G), and APX(B) are arranged at positions partitioned by a plurality of scanning lines G extending in the X direction and arranged side by side in the Y direction, and signal lines S extending in the Y direction and arranged side by side in the X direction.

[0047] FIG. 7 shows the positional relationship between the openings APX(R), APX(G), and APX(B) and the color filters CFR, CFG, and CFB in this embodiment.

[0048] 7, in this embodiment, the color filter CFR extends so as to overlap with an aperture APX(R) formed in each of the sub-pixels SPR arranged diagonally with respect to the X and Y directions. Similarly, in this embodiment, the color filter CFG extends so as to overlap with an aperture APX(G) formed in each of the sub-pixels SPG arranged diagonally with respect to the X and Y directions. Furthermore, in this embodiment, the color filter CFB extends so as to overlap with an aperture APX(B) formed in each of the sub-pixels SPB arranged diagonally with respect to the X and Y directions.

[0049] In this embodiment, the widths of the color filters CFR, CFG, and CFB (the widths in a direction perpendicular to the oblique direction in which the color filters CFR, CFG, and CFB extend) are, for example, constant.

[0050] Here, when the color filter CFR is arranged as shown in Fig. 7, the color filter CFR overlaps with a part of the aperture APX(G) and a part of the aperture APX(B). When the color filter CFG is arranged as shown in Fig. 7, the color filter CFG overlaps with a part of the aperture APX(R) and a part of the aperture APX(B). When the color filter CFB is arranged as shown in Fig. 7, the color filter CFB overlaps with a part of the aperture APX(R) and a part of the aperture APX(G). In this case, there is a possibility that a deviation occurs in the chromaticity of each of the subpixels SPR, SPG, and SPB.

[0051] 7, adjacent color filters CFR, CFG, and CFB are arranged to be in contact with each other, but the color filters CFR, CFG, and CFB may be arranged to have gaps between them. Although not shown, when the color filters CFR, CFG, and CFB are arranged to have gaps between them, a part of the opening APX(R), a part of the opening APX(G), and a part of the opening APX(B) do not overlap with the color filters CFR, CFG, and CFB, and white spots may occur.

[0052] For this reason, in this embodiment, as shown in FIG. 8, a black matrix BM is arranged so as to extend so as to overlap the boundary portion between adjacent color filters (first and second color filters) (or to fill the gap between adjacent color filters).

[0053] Specifically, the black matrix BM overlaps, for example, with the boundary portion between the color filter CFR and the color filter CFG, and overlaps with a portion of each of the multiple openings APX(R) arranged in a diagonal direction and with a portion of each of the multiple openings APX(G) arranged in a diagonal direction.

[0054] Similarly, the black matrix BM overlaps the boundary between the color filters CFG and CFB, and overlaps with a portion of each of the multiple openings APX(G) arranged in a diagonal direction and with a portion of each of the multiple openings APX(B) arranged in a diagonal direction.

[0055] In addition, the black matrix BM overlaps the boundary between the color filters CFB and CFR, and overlaps with a portion of each of the multiple openings APX(B) arranged in a diagonal direction and with a portion of each of the multiple openings APX(R) arranged in a diagonal direction.

[0056] In this embodiment, with such a configuration, for example, a part of the aperture APX(G) and a part of the aperture APX(B) overlapped by the obliquely arranged color filters CFR can be shielded by the black matrix BM, so that it is possible to suppress a deterioration in the display quality of the display device 1. Here, the color filter CFR has been described, but the same applies to the other color filters CFG and CFB.

[0057] 4, the display device 1 in which the common electrode CE is disposed above the pixel electrode PE (on the second substrate SUB2 side) has been described, but the display device 1 according to this embodiment may be configured so that the pixel electrode PE is disposed above the common electrode CE. In the case where the pixel electrode PE is configured so that the pixel electrode PE is disposed above the common electrode CE, there is no need to form a slit SL in the common electrode CE, and instead, a slit SL is formed in the pixel electrode PE.

[0058] In addition, in the present embodiment, the configuration in which the color filters CFR, CFG, and CFB are arranged on the second substrate SUB2 has been described, but the display device 1 according to the present embodiment may be a COA (Color filter On Array) type display device in which the color filters CFR, CFG, and CFB are arranged on the first substrate SUB1 (array substrate) side. In this case, as described in the present embodiment, a metal layer (light-shielding layer) overlapping the boundary portion of the adjacent color filters may be arranged on the first substrate SUB1. In this case, the metal layer (light-shielding layer) provided on the first substrate SUB1 is preferably a metal layer (light-shielding layer) provided between the fourth insulating film 14 and the first alignment film 16 shown in FIG. 4, for example, and in contact with the common electrode CE. The shape of such a metal layer (light-shielding layer) in plan view may be considered to be common to the pattern of the black matrix BM shown in FIG. 8 and described below.

[0059] In this embodiment, the second substrate SUB2 (color filter substrate) and the display area DA have been described as being rectangular in shape having a short side (first side) along the X direction and a long side (second side) along the Y direction. However, the second substrate SUB2 and the display area DA may be polygonal in shape (e.g., an octagon) having sides along directions intersecting the X and Y directions.

[0060] Second embodiment Next, a second embodiment will be described. In this embodiment, the description of the same parts as those in the first embodiment will be omitted, and the description will be mainly focused on the parts that are different from the first embodiment. In this embodiment, the same parts as those in the figures used in the description of the first embodiment will be appropriately denoted by the same reference numerals.

[0061] In the first embodiment described above, the black matrix BM is arranged at a position overlapping the boundary portion of adjacent color filters (e.g., color filters CFR and CFG). However, the first embodiment assumes that the display device 1 is used in a head-mounted display that displays, for example, images for VR in a closed space (a space in which the display device 1 is not illuminated by external light, etc.).

[0062] On the other hand, in the case of a display device 1 that displays images in a space illuminated by external light, etc., the external light may be reflected by the metal wiring, which may reduce the visibility of the image displayed on the display device 1 (display area DA).

[0063] Therefore, the display device 1 according to this embodiment has a configuration in which the black matrix BM is arranged so as to overlap with the boundary portions between the above-mentioned adjacent color filters and the metal wiring provided in the display device 1.

[0064] Here, it is assumed that the metal wiring included in the display device 1 in this embodiment is the scanning line G (the scanning line G extending in the X direction for supplying a scanning signal to the switching element SW).

[0065] In addition, in the same manner as in the first embodiment described above, the color filters CFR, CFG, and CFB in this embodiment extend so as to overlap with the openings APX(R), APX(G), and APX(B) formed in each of the multiple sub-pixels SPR, SPG, and SPB arranged diagonally with respect to the X direction and Y direction.

[0066] In this case, as shown in FIG. 9, a black matrix BM is arranged in which a black matrix BM1 extending in an oblique direction so as to overlap the boundary portion of an adjacent color filter and a black matrix BM2 extending in the X direction so as to overlap the scanning line G are combined.

[0067] Although the case where the metal wiring of the display device 1 is the scanning line G has been described here, we will assume that the metal wiring is a signal line S (a signal line S extending in the Y direction to supply a video signal to the switching element SW).

[0068] In this case, as shown in FIG. 10, a black matrix BM is arranged in which a black matrix BM1 extending in a diagonal direction so as to overlap with the boundary portion of adjacent color filters and a black matrix BM3 extending in the Y direction so as to overlap with the signal line S are combined.

[0069] 9 and 10 may be combined to arrange a black matrix BM that overlaps the boundary between adjacent color filters and the scanning lines G and signal lines S as shown in FIG. 11.

[0070] In this embodiment, by arranging a black matrix BM overlapping at least one of the scanning lines G and the signal lines S as described above, reflection of external light on at least one of the scanning lines G and the signal lines S is suppressed, thereby improving the visibility of the image displayed on the display device 1.

[0071] In this embodiment, the black matrix BM1 extending diagonally so as to overlap with the boundary portion of the adjacent color filters and the black matrix BM2 or BM3 overlapping with at least one of the scanning lines G and the signal lines S are described as being formed integrally (arranged in the same layer), but the display device 1 of this embodiment may be configured to suppress reflection of external light by metal wiring such as the scanning lines G and the signal lines S.

[0072] Specifically, in this embodiment, the black matrix BM2 or BM3 for suppressing irradiation of the metal wiring with external light may be arranged in a layer different from the black matrix BM1. Specifically, the black matrix BM1 overlapping the boundary portion of the adjacent color filter may be arranged on the second substrate SUB2 (color filter substrate) side as described in the first embodiment, and the black matrix BM2 or BM3 (or a light-shielding layer corresponding to the black matrix BM2 or BM3) may be arranged at a position overlapping the scanning line G or the signal line S on the first substrate SUB1 side.

[0073] In this embodiment, in order to reduce the reflectance of external light on the metal wiring, a black matrix BM1 overlapping the boundary portion of the adjacent color filter may be disposed on the second substrate SUB2 (color filter substrate) side, and an anti-reflection layer may be formed on the surface of the metal wiring (scanning line G or signal line S). The anti-reflection layer is formed of, for example, metal oxide or black resin, and has a reflectance at least lower than that of the metal wiring. When the anti-reflection layer is formed on the metal wiring in this way, the black matrix BM2 or BM3 overlapping the scanning line G or signal line S may be omitted.

[0074] All display devices and color filter substrates that can be implemented by a person skilled in the art through appropriate design modifications based on the display device and color filter substrate described above as embodiments of the present invention also fall within the scope of the present invention as long as they include the gist of the present invention.

[0075] Within the scope of the concept of the present invention, a person skilled in the art may conceive of various modifications, and such modifications are also understood to fall within the scope of the present invention. For example, those in which a person skilled in the art appropriately adds or removes components or modifies the design of the above-mentioned embodiment, or adds or omits steps or modifies conditions, are also included in the scope of the present invention as long as they include the gist of the present invention.

[0076] Furthermore, with regard to other effects and advantages brought about by the aspects described in the above-mentioned embodiments, those which are obvious from the description in this specification or which can be appropriately thought up by a person skilled in the art are naturally understood to be brought about by the present invention. [Explanation of symbols]

[0077] 1...display device, 2...display panel, SUB1...first substrate, SUB2...second substrate (color filter substrate), LC...liquid crystal layer, DA...display area, PX...pixel, SPR, SPG, SPB...sub-pixel, PE...pixel electrode, CE...common electrode, CFR, CFG, CFB...color filter, BM, BM1, BM2, BM3...black matrix, APX, APX(R), APX(G), APX(B)...aperture.

Claims

1. a first substrate including a plurality of pixels arranged in a matrix in a first direction and a second direction; a second substrate facing the first substrate and including a plurality of color filters corresponding to the plurality of pixels and a light-shielding layer; a liquid crystal layer held between the first substrate and the second substrate; Equipped with the plurality of pixels include a plurality of first pixels arranged in a diagonal direction with respect to the first direction and the second direction, and a plurality of second pixels adjacent to each of the plurality of first pixels in the first direction and arranged in the diagonal direction, the plurality of color filters include first color filters extending in the oblique direction so as to overlap with the plurality of first pixels, and second color filters extending in the oblique direction so as to overlap with the plurality of second pixels, The light-shielding layer extends in the oblique direction so as to overlap a boundary portion between the first color filter and the second color filter. Display device.

2. 2. The display device according to claim 1, wherein the first and second color filters extending in the oblique direction have a constant width in a direction perpendicular to the oblique direction.

3. The display device according to claim 2 , wherein the light blocking layer overlaps a part of an opening formed in each of the plurality of first pixels and a part of an opening formed in each of the plurality of second pixels.

4. Each of the plurality of pixels includes a pixel electrode disposed in the pixel and a switching element connected to the pixel electrode, the first substrate includes scanning lines extending in the first direction to supply scanning signals to the switching elements; The light blocking layer further extends so as to overlap the scanning lines. The display device according to any one of claims 1 to 3.

5. Each of the plurality of pixels includes a pixel electrode disposed in the pixel and a switching element connected to the pixel electrode, the first substrate includes signal lines extending in the second direction to supply video signals to the switching elements; The light-shielding layer further extends so as to overlap the signal line. The display device according to any one of claims 1 to 3.

6. Each of the plurality of pixels includes a pixel electrode disposed in the pixel and a switching element connected to the pixel electrode, the first substrate includes scanning lines extending in the first direction to supply scanning signals to the switching elements, and signal lines extending in the second direction to supply video signals to the switching elements; The light-shielding layer further extends so as to overlap the scanning lines and the signal lines. The display device according to any one of claims 1 to 3.

7. A color filter substrate for holding a liquid crystal layer between itself and an array substrate having a plurality of pixels arranged in a matrix in a first direction and a second direction, A plurality of color filters corresponding to the plurality of pixels; Light-shielding layer Equipped with the plurality of pixels include a plurality of first pixels arranged in a diagonal direction with respect to the first direction and the second direction, and a plurality of second pixels adjacent to each of the plurality of first pixels in the first direction and arranged in the diagonal direction, the plurality of color filters include first color filters extending in the oblique direction so as to overlap with the plurality of first pixels, and second color filters extending in the oblique direction so as to overlap with the plurality of second pixels, The light-shielding layer extends in the oblique direction so as to overlap a boundary portion between the first color filter and the second color filter. Color filter substrate.

8. 8. The color filter substrate according to claim 7, wherein the color filter substrate or a display region in which the plurality of pixels are arranged is rectangular having a first side along the first direction and a second side along the second direction.

9. 8. The color filter substrate according to claim 7, wherein the color filter substrate or a display region in which the plurality of pixels are arranged is polygonal having sides extending along at least a direction intersecting the first direction and the second direction.

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