Display device and color filter substrate

Abstract

The invention provides a display device. A display device according to an embodiment includes: a first substrate including a plurality of pixels arranged in first and second directions; a second substrate provided with 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 includes a plurality of first pixels arranged in an inclined direction inclined with respect to the first and second directions, and a plurality of second pixels adjacent to each of the plurality of first pixels in the first direction and arranged in the inclined direction. The plurality of color filters include a first color filter extending in the inclined direction so as to overlap the plurality of first pixels, and a second color filter extending in the inclined direction so as to overlap the plurality of second pixels. The light shielding layer extends in the inclined direction so as to overlap a boundary portion between the first color filter and the second color filter.

Description

[0001] This application is based on Japanese Patent Application No. 2023-101722 (filing date: June 21, 2023) and claims priority from the aforementioned application, the entire contents of which are incorporated herein by reference. Technical Field

[0002] Embodiments of the present invention relate to a display device and a color filter substrate. Background Art

[0003] Generally, there is known a display device having an array substrate (TFT substrate) provided with switching elements such as thin film transistors (TFT), a color filter substrate provided with color filters, and a liquid crystal layer held between the array substrate and the color filter substrate.

[0004] In such a display device, when achieving high definition, the display quality of the display device may be degraded depending on, for example, the pattern of the color filter formed on the color filter substrate. Summary of 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.

[0006] The display device of the embodiment includes: a first substrate including a plurality of pixels arranged in a row and column 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 an oblique direction oblique 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 oblique direction. The plurality of color filters include a first color filter extending in the oblique direction in a manner overlapping with the plurality of first pixels, and a second color filter extending in the oblique direction in a manner overlapping with the plurality of second pixels. The light shielding layer extends in the oblique direction in a manner overlapping with a boundary portion between the first color filter and the second color filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic exploded perspective view of the display device according to the first embodiment.

[0008] Figure 2 It is a schematic top view of the display panel.

[0009] Figure 3 It is a schematic plan view showing an example of the layout of sub-pixels.

[0010] Figure 4 It is a schematic cross-sectional view of a display panel.

[0011] Figure 5 It is a schematic plan view showing a part of the elements arranged on the first substrate in the display region.

[0012] Figure 6 The diagram shows the arrangement of openings formed in a plurality of sub-pixels in a plan view.

[0013] Figure 7 The diagram shows the positional relationship between the openings formed in a plurality of sub-pixels and the color filters in a plan view.

[0014] Figure 8 It is a diagram for explaining the arrangement of the black matrix.

[0015] Fig. 9 This is a diagram showing an example of the arrangement of the black matrix in the second embodiment.

[0016] Fig.10 It is a diagram showing another example of the arrangement of the black matrix.

[0017] Fig.11 It is a diagram showing still another example of the arrangement of the black matrix.

[0018] The reference numerals are described as follows:

[0019] 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) opening. DETAILED DESCRIPTION

[0020] Hereinafter, each embodiment will be described with reference to the drawings.

[0021] In addition, the present disclosure is only an example, and appropriate changes that maintain the main purpose of the invention that are easily conceived by those skilled in the art are of course included in the scope of the present invention. In addition, in order to make the description clearer, the drawings are sometimes schematically shown compared to the actual form, but this is only an example and does not limit the interpretation of the present invention. In addition, sometimes the figure marks are omitted for the same or similar elements that are continuously arranged in each figure. In addition, in this specification and each figure, the same figure marks are marked for the constituent elements that perform the same or similar functions as the constituent elements described in the figures that have already appeared, and repeated detailed descriptions are omitted.

[0022] (First embodiment)

[0023] Figure 1 1 is a schematic exploded perspective view of the display device 1 of the first embodiment. The X direction, Y direction, and Z direction are defined as shown in the figure. These X, Y, and Z directions are directions orthogonal to each other in the present embodiment, but may intersect at angles other than perpendicular. The display device 1 or its components viewed parallel to the Z direction is referred to as a top view. In addition, the direction indicated by the arrow in the Z direction is sometimes referred to as the upper direction, and the opposite direction is referred to as the lower direction.

[0024] The display device 1 includes a display panel 2 and a backlight 3. Figure 1 In the example shown, the backlight 3 is a side-type backlight having a light guide LG facing the display panel 2 and a plurality of light emitting elements LS facing the side of the light guide LG. However, the configuration of the backlight 3 is not limited to Figure 1 The examples shown may be configured to supply light required for image display.

[0025] exist Figure 1 In the example shown, the display panel 2 and the light guide LG are both formed in a rectangular shape having short sides along the X direction and long sides along the Y direction. The display panel 2 and the light guide LG are not limited to rectangular shapes, and may be other shapes.

[0026] The display panel 2 is a transmissive liquid crystal panel, and includes a first substrate SUB1 (array substrate), a second substrate SUB2 (counter substrate) opposite 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.

[0027] The display device 1 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 for diffusing light emitted from the light guide LG, and a first prism sheet PR1 and a second prism sheet PR2 in which a plurality of prisms are formed.

[0028] The first polarizing plate 5 is disposed between the optical sheet group 4 and the first substrate SUB 1. The second polarizing plate 6 is disposed above the second substrate SUB 2. The polarization axis of the first polarizing plate 5 and the variation axis of the second polarizing plate 6 are in a cross-Nicol relationship that are orthogonal to each other.

[0029] The display device 1 can be used in various devices (electronic devices) such as vehicle-mounted equipment, smartphones, tablet terminals, mobile phone terminals, personal computers, television add-on devices, and gaming devices, and can also be used in head-mounted displays that display images for VR (Virtual Reality).

[0030] Figure 2 FIG. 2 is a schematic top view of the display panel 2. The display panel 2 includes a display area DA and a peripheral area SA therearound. Figure 2 In the example shown, the lower side of the first substrate SUB1 in the figure protrudes in the Y direction relative to the second substrate SUB2. Thus, a mounting area MA is formed on the first substrate SUB1 that does not overlap with the second substrate SUB2. The mounting area MA is a part of the peripheral area SA.

[0031] A plurality of pixels PX are arranged in a matrix (row and column) in the display area DA. In the expression device 1 of the present embodiment, sub-pixel rendering is applied to improve the resolution in a simulated manner. In this case, the pixel PX includes a plurality of sub-pixels. In the present 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.

[0032] The display panel 2 includes a plurality of scanning lines G, a plurality of signal lines (image 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.

[0033] exist Figure 2 In the example shown, the controller CT is mounted on the mounting area MA. In addition, the mounting area MA is provided with a terminal portion T, and the flexible circuit substrate F is connected to the terminal portion T. In addition, the controller CT can be mounted on the flexible circuit substrate F. The controller CT can be configured using an IC or various circuit elements.

[0034] The flexible circuit substrate F inputs various signals sent from the substrate of the electronic device on which the display device 1 is mounted to the controller CT. The controller CT supplies an image signal to the selector circuit ST based on the input signal, and controls the first scanning driver GD1, the second scanning driver GD2, and the selector circuit ST. The first scanning driver GD1 and the second scanning driver GD2 sequentially supply scanning signals to each scanning line G. The selector circuit ST sequentially supplies the input image signal to the signal line S.

[0035] The pixel PX includes a pixel electrode PE, a switching element SW (thin film transistor), and a common electrode CE supplied with a common voltage. The switching element SW is connected to the pixel electrode PE, the scanning line G, and the signal line S. When a scanning signal is supplied to the scanning line G, an image signal of the signal line S is supplied to the pixel electrode PE. The common electrode CE is formed across a plurality of sub-pixels. When an image 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 electric field generated thereby acts on the liquid crystal layer LC.

[0036] In the present embodiment, the scanning lines G, the signal lines S, the first scanning driver GD1, the second scanning driver GD2, the selector circuit ST, the switching element SW, the pixel electrode PE, and the common electrode CE are all formed on the first substrate SUB1.

[0037] Figure 3 1 is a schematic top view showing an example of the layout of sub-pixels SPR, SPG, and SPB (pixel PX). The sub-pixel SPR is configured to display a red sub-pixel by configuring a red color filter CFR as a color filter corresponding to the sub-pixel SPR. The sub-pixel SPG is configured to display a green sub-pixel by configuring a green color filter CFG as a color filter corresponding to the sub-pixel SPG. The sub-pixel SPB is configured to display a blue sub-pixel by configuring a blue color filter CFB as a color filter corresponding to the sub-pixel SPB.

[0038] exist Figure 3 In the example shown, sub-pixels SPR, SPG, and SPB are arranged in this order in the X direction. In addition, sub-pixels SPR, SPB, and SPG are arranged in this order in the Y direction. Thus, a plurality of sub-pixels SPR are arranged in an oblique direction intersecting the X direction and the Y direction. In addition, a plurality of sub-pixels SPG are adjacent to each of a plurality of sub-pixels SPR in the X direction, and are arranged in the oblique direction in the same manner as the plurality of sub-pixels SPR. Moreover, a plurality of sub-pixels SPB are adjacent to each of a plurality of sub-pixels SPG in the X direction, and are arranged in the oblique direction in the same manner as the plurality of sub-pixels SPR and SPG.

[0039] In addition, in this embodiment, as long as the sub-pixels SPR, SPG and SPB are arranged in the above-mentioned manner in an oblique direction (that is, in a mosaic configuration), the sub-pixels SPR, SPG and SPB may also be arranged in the same direction as the sub-pixels SPR, SPG and SPB. Figure 3 In addition, the aspect ratio of the sub-pixels SPR, SPG and SPB can be designed to be 1:2 or 2:3, for example.

[0040] Figure 4 2 is a schematic cross-sectional view of the display panel 2. The first substrate SUB1 includes the signal line S, the switching element SW, the pixel electrode PE, and the common electrode CE. Figure 4 Although not shown in the figure, the first substrate SUB1 also includes the scanning line G mentioned above.

[0041] 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 .

[0042] The first insulating substrate 10 is formed of glass, for example, but may also be formed of a resin material such as polyamide. The first to fourth insulating layers 11 to 14 are formed of inorganic materials such as silicon nitride or silicon oxide. The organic insulating layer 15 is formed of an organic material such as acrylic resin. The pixel electrode PE and the common electrode CE are formed of a transparent conductive material such as ITO. The scanning line G and the signal line S are formed of a metal material. The scanning line G and the signal line S may have a single-layer structure formed of a single metal material or a multi-layer structure in which different types of metal materials are stacked.

[0043] The first insulating layer 11 covers the upper surface (the surface on the second substrate SUB2 side) of the first insulating base 10. A semiconductor layer SC made of polysilicon or the like included 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.

[0044] Although in Figure 4 Although not shown in the figure, a scanning line G is arranged on the second insulating layer 12. The scanning line G and the semiconductor layer SC intersect at least once. The third insulating layer 13 covers the scanning line G and the second insulating layer 12. A signal line S is arranged on the third insulating layer 13. The signal line S passes through a contact hole penetrating the second insulating layer 12 and the third insulating layer 13 and contacts the semiconductor layer SC.

[0045] The organic insulating layer 15 covers the signal line S and the third insulating layer 13. The organic insulating layer 15 is formed thicker than the first to fourth insulating layers 11 to 14. The organic insulating layer 15 flattens the unevenness generated by the switching element SW and the like.

[0046] The pixel electrode PE is disposed on the organic insulating layer 15. The pixel electrode PE contacts the semiconductor layer SC through a contact hole (not shown) penetrating the organic insulating layer 15. Another conductive layer may be interposed between the pixel electrode PE and the semiconductor layer SC.

[0047] The fourth insulating layer 14 covers the pixel electrode 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 overlapping the pixel electrode PE in a plan view. The common electrode CE is covered with a first alignment film 16 .

[0048] 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 .

[0049] The black matrix BM is arranged on the lower surface of the second insulating base material 20 (the surface on the first substrate SUB1 side).

[0050] The color filters CFR, CFG, and CFB are disposed under the second insulating substrate 20 and the black matrix BM.

[0051] The organic insulating layer 21 covers the color filters CFR, CFG, and CFB. The organic insulating layer 21 flattens the concavities and convexities formed by the color filters CFR, CFG, and CFB. The organic insulating layer 21 is covered by the second alignment film 22 .

[0052] The first substrate SUB1 and the second substrate SUB2 are bonded together by a ring-shaped sealing material in the peripheral area SA. A liquid crystal layer LC is sealed between the first substrate SUB1 and the second substrate SUB2.

[0053] In the display device 1 described above, when a video signal is supplied to the pixel electrode PE, an electric field is formed between the pixel electrode PE and the common electrode CE. The electric field passes through the slit SL and acts on the liquid crystal layer LC, thereby controlling the alignment of liquid crystal molecules included in the liquid crystal layer LC.

[0054] Figure 5 FIG. 1 is a schematic plan view showing a part of the elements arranged on the first substrate SUB1 in the display area DA. Figure 5 , focusing on one sub-pixel, two scanning lines G extending in the X direction and adjacent in the Y direction, and two signal lines S extending in the Y direction and adjacent in the X direction are shown. In the display area DA, an opening APX surrounded by the two scanning lines G and the two signal lines S is formed for each sub-pixel. The pixel electrode PE overlaps most of the opening APX.

[0055] In addition, if Figure 5 As shown, the common electrode CE has one slit SL in the region overlapping with the opening APX. The slit SL includes, for example, a plurality of portions inclined with respect to the X direction and the Y direction. In addition, a plurality of slits SL may be provided with respect to one opening APX.

[0056] Here, when high definition is achieved in the display device 1 in which the first substrate SUB1 (array substrate) and the second substrate SUB2 (color filter substrate) are bonded together as described above, there is a possibility that the display quality in the display device 1 will be reduced depending on the patterns of the color filters CFR, CFG and CFB.

[0057] Specifically, in the above Figure 3 When the sub-pixels SPR, SPG, and SPB are arranged in a mosaic shape as described in the above, it is necessary to form the color filters CFR, CFG, and CFB corresponding to each of the sub-pixels SPR, SPG, and SPB as separate patterns. However, when the patterning accuracy of the color filters CFR, CFG, and CFB is insufficient, the color filters CFR, CFG, and CFB may fall off in a part of the opening APX formed in the above-mentioned sub-pixels SPR, SPG, and SPB, thereby generating white spots. In addition, when color filters of the same color formed in an oblique direction are connected as separate patterns, it is possible that the connection portion may overlap with the opening APX formed in the adjacent sub-pixel in the X direction, or the film thickness of the connection portion may become thicker, thereby generating defects such as breaking through the outer coating layer (organic insulating layer 21).

[0058] Therefore, in this embodiment, a configuration is proposed for suppressing the degradation of the display quality in the display device 1 that may be caused by the patterns (shape or arrangement, etc.) of the color filters CFR, CFG, and CFB described above.

[0059] Here, Figure 6 The arrangement of the openings APX(R), APX(G) and APX(B) of the plurality of sub-pixels SPR, SPG and SPB formed in a plan view is shown. Figure 3 As shown in FIG. 1 , it is assumed that a plurality of sub-pixels SPR, SPG, and SPB are provided. The opening APX(R) is formed at Figure 3 The openings of the plurality of sub-pixels SPR are shown. The opening APX(G) is formed in Figure 3 The openings of the plurality of sub-pixels SPG are shown. The opening APX (B) is formed in Figure 3 The openings of multiple sub-pixels SPB are shown.

[0060] Although in Figure 6Although not shown, the openings APX(R), APX(G) and APX(B) are arranged at positions divided by a plurality of scanning lines G extending in the X direction and arranged in the Y direction, and a signal line S extending in the Y direction and arranged in the X direction.

[0061] Figure 7 The positional relationship between the openings APX(R), APX(G), and APX(B) and the color filters CFR, CFG, and CFB in this embodiment is shown.

[0062] like Figure 7 As shown, in the present embodiment, the color filter CFR extends in a manner overlapping with the opening APX(R) formed in each of the plurality of sub-pixels SPR arranged in a direction inclined relative to the X direction and the Y direction. Similarly, in the present embodiment, the color filter CFG extends in a manner overlapping with the opening APX(G) formed in each of the plurality of sub-pixels SPG arranged in a direction inclined relative to the X direction and the Y direction. Furthermore, in the present embodiment, the color filter CFB extends in a manner overlapping with the opening APX(B) formed in each of the plurality of sub-pixels SPB arranged in a direction inclined relative to the X direction and the Y direction.

[0063] In addition, in the present embodiment, the widths of the color filters CFR, CFG, and CFB (the widths in the direction perpendicular to the inclined direction in which the color filters CFR, CFG, and CFB extend) are, for example, constant.

[0064] Here, in Figure 7 When a color filter CFR is configured as shown, the color filter CFR overlaps a portion of the opening APX (G) and a portion of the opening APX (B). Figure 7 In the case where the color filter CFG is configured as shown, the color filter CFG overlaps a portion of the opening APX(R) and a portion of the opening APX(B). Figure 7 When the color filter CFB is arranged as shown, the color filter CFB overlaps a part of the opening APX(R) and a part of the opening APX(G). In this case, the chromaticity of each of the sub-pixels SPR, SPG, and SPB may shift.

[0065] In addition, Figure 7In the figure, the adjacent color filters CFR, CFG, and CFB are arranged in contact, but the color filters CFR, CFG, and CFB may be arranged with a gap. Although not shown in the figure, when the color filters CFR, CFG, and CFB are arranged with a gap like this, 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 be generated.

[0066] Therefore, in this embodiment, if Figure 8 As shown in FIG. 1 , the black matrix BM is arranged to extend so as to overlap with the boundary portion between the adjacent color filters (the first color filter and the second color filter) (or to fill the gap between the adjacent color filters).

[0067] Specifically, the black matrix BM overlaps with a boundary portion of the color filter CFR and the color filter CFG, and overlaps with a portion of each of a plurality of openings APX(R) arranged in an oblique direction and a portion of each of a plurality of openings APX(G) arranged in an oblique direction.

[0068] Similarly, the black matrix BM overlaps with the boundary portion of the color filter CFG and the color filter CFB, and a portion of each of the plurality of openings APX(G) arranged in the oblique direction overlaps with a portion of each of the plurality of openings APX(B) arranged in the oblique direction.

[0069] In addition, the black matrix BM overlaps with the boundary portion of the color filter CFB and the color filter CFR, and a portion of each of the plurality of openings APX(B) arranged in the oblique direction overlaps with a portion of each of the plurality of openings APX(R) arranged in the oblique direction.

[0070] In the present embodiment, by using such a configuration, for example, a portion of the opening APX(G) and a portion of the opening APX(B) overlapped by the color filter CFR arranged in an oblique direction can be shielded by the black matrix BM, thereby suppressing a decrease in the display quality in the display device 1. Here, the color filter CFR is described, but the same is true for the other color filters CFG and CFB.

[0071] In addition, in the above Figure 4, a display device 1 is described in which a common electrode CE is arranged above the pixel electrode PE (on the second substrate SUB2 side), but the display device 1 of this embodiment may be configured such that the pixel electrode PE is arranged above the common electrode CE. In addition, in the case of a configuration in which the pixel electrode PE is arranged above the common electrode CE, it is not necessary to form a slit SL in the common electrode CE, and instead, a slit SL is formed in the pixel electrode PE.

[0072] In addition, in this embodiment, the configuration in which the color filters CFR, CFG, and CFB are arranged on the second substrate SUB2 is described, but the display device 1 of this 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, a metal layer (light shielding layer) that overlaps with the boundary portion of the adjacent color filters as described in this embodiment 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 provided, for example, on Figure 4 Between the fourth insulating film 14 and the first orientation film 16 shown in FIG. 1 is a metal layer (light shielding layer) in contact with the common electrode CE. The shape of this metal layer (light shielding layer) in plan view is considered to be similar to that in FIG. Figure 8 The same shape as the pattern of the black matrix BM described in the subsequent figures may be used.

[0073] In addition, in the present embodiment, for example, the second substrate SUB2 (color filter substrate) and the display area DA are described as having a rectangular shape with a short side (first side) along the X direction and a long side (second side) along the Y direction, but the second substrate SUB2 and the display area DA may be a polygonal shape (for example, an octagon, etc.) having sides along directions intersecting the X direction and the Y direction.

[0074] (Second embodiment)

[0075] Next, the second embodiment is described. In this embodiment, the description of the same parts as those in the first embodiment is omitted, and the description of the parts different from the first embodiment is mainly performed. In this embodiment, the same parts as those in the drawings used in the description of the first embodiment are appropriately marked with the same reference numerals for description.

[0076] In the above-mentioned first embodiment, it is described that the black matrix BM is arranged at a position overlapping with the boundary portion of adjacent color filters (for example, color filters CFR and CFG), but this first embodiment assumes a situation where, for example, the display device 1 is used for a head-mounted display for displaying images for VR in a closed space (a space where the display device 1 is not irradiated by external light, etc.).

[0077] On the other hand, in the case of a display device 1 that displays an image in such a space illuminated by external light or the like, the external light is reflected by the metal wiring, and the visibility of the image displayed in the display device 1 (display area DA) may be reduced.

[0078] Therefore, the display device 1 of the present embodiment has a configuration in which the black matrix BM is arranged so as to overlap with the boundary portion between the adjacent color filters described above and the metal wiring included in the display device 1 .

[0079] Here, in the present embodiment, it is assumed that the metal wiring included in the display device 1 is a scanning line G (a scanning line G extending in the X direction in order to supply a scanning signal to the switching element SW).

[0080] In addition, each of the color filters CFR, CFG and CFB in this embodiment extends in a manner overlapping with the formed openings APX(R), APX(G) and APX(B) in each of the multiple sub-pixels SPR, SPG and SPB arranged in an inclined direction relative to the X direction and the Y direction, similarly to the above-mentioned first embodiment.

[0081] In this case, if Fig. 9 As shown, a black matrix BM obtained by combining a black matrix BM1 extending in an oblique direction so as to overlap with a boundary portion between adjacent color filters and a black matrix BM2 extending in the X direction so as to overlap with the scanning line G is arranged.

[0082] Here, the case where the metal wiring included in the display device 1 is the scanning line G is described, but it is also possible to assume a case where the metal wiring is the signal line S (the signal line S extending in the Y direction to supply a video signal to the switching element SW).

[0083] In this case, if Fig.10 As shown, a black matrix BM obtained by combining a black matrix BM1 extending in an oblique direction so as to overlap with a boundary portion between adjacent color filters and a black matrix BM3 extending in the Y direction so as to overlap with the signal line S is arranged.

[0084] In addition, Fig. 9 as well as Fig.10 The composition shown is thus Fig.11 As shown in FIG. 1 , a black matrix BM in which the boundary portion between adjacent color filters overlaps with the scanning line G and the signal line S may be arranged.

[0085] In this embodiment, by configuring the black matrix BM overlapping with at least one of the scanning line G and the signal line S as described above, reflection of external light in at least one of the scanning line G and the signal line S is suppressed, thereby improving the visual confirmation of the image displayed on the display device 1.

[0086] In addition, in this embodiment, a black matrix BM1 extending in an inclined direction so as to overlap with a boundary portion of an adjacent color filter and a black matrix BM2 or BM3 overlapping with at least one of the scanning line G and the signal line S are integrally formed (arranged on the same layer), but the display device 1 of this embodiment only needs to be configured to suppress external light from being reflected by such metal wiring of the scanning line G and the signal line S.

[0087] Specifically, in this embodiment, the black matrix BM2 or BM3 for suppressing external light from irradiating the metal wiring may also 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 is arranged on the second substrate SUB2 (color filter substrate) side as described in the first embodiment above, and the black matrix BM2 or BM3 (the light shielding layer equivalent thereto) may be arranged at a position overlapping with the scanning line G or the signal line S on the first substrate SUB1 side.

[0088] In addition, in this embodiment, in order to reduce the reflectivity of external light in the metal wiring, the black matrix BM1 overlapping the boundary portion of the adjacent color filter can also be arranged on the second substrate SUB2 (color filter substrate) side, and an anti-reflection layer is formed on the surface of the metal wiring (scanning line G or signal line S). The anti-reflection layer is formed of, for example, a metal oxide or a black resin, and has a reflectivity at least lower than that of the metal wiring. In the case where the anti-reflection layer is formed on the metal wiring like this, the black matrix BM2 or BM3 overlapping the scanning line G or the signal line S can also be omitted.

[0089] Based on the display device and color filter substrate described above as embodiments of the present invention, any display device and color filter substrate that can be appropriately designed and modified by a person skilled in the art will fall within the scope of the present invention as long as it includes the gist of the present invention.

[0090] In the scope of the concept of the present invention, various modifications that can be thought of by those skilled in the art should be understood as belonging to the scope of the present invention. For example, those skilled in the art appropriately add, delete, or change the design of the constituent elements, or add, omit, or change the conditions of the process relative to the above-mentioned embodiment, which are also included in the scope of the present invention as long as they have the gist of the present invention.

[0091] In addition, regarding other effects brought about by the methods described in the above-mentioned embodiments, it should be understood that the effects that are clear from the description of this specification or the operating effects that are appropriately thought of by those skilled in the art are naturally brought about by the present invention.

Claims

1. A display device, characterized in that: have: A first substrate having a plurality of pixels arranged in rows and columns in a first direction and a second direction; a second substrate, which is opposite to the first substrate and has a plurality of color filters corresponding to the plurality of pixels and a light shielding layer; as well as 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 an oblique direction oblique 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 oblique direction. The plurality of color filters include a first color filter extending in the oblique direction so as to overlap with the plurality of first pixels, and a second color filter 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 with a boundary portion between the first color filter and the second color filter.

2. The display device according to claim 1, characterized in that The first color filter and the second color filter 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, characterized in that: The light shielding layer overlaps a portion of the opening formed in each of the plurality of first pixels and a portion of the opening formed in each of the plurality of second pixels.

4. The display device according to any one of claims 1 to 3, characterized in that: Each of the plurality of pixels includes a pixel electrode disposed at the pixel and a switching element connected to the pixel electrode. The first substrate includes a scanning line extending in the first direction for supplying a scanning signal to the switching element. The light shielding layer further extends to overlap with the scanning line.

5. The display device according to any one of claims 1 to 3, characterized in that: Each of the plurality of pixels includes a pixel electrode disposed at the pixel and a switching element connected to the pixel electrode. The first substrate includes a signal line extending in the second direction for supplying a video signal to the switching element. The light shielding layer also extends to overlap with the signal line.

6. The display device according to any one of claims 1 to 3, characterized in that: Each of the plurality of pixels includes a pixel electrode disposed at the pixel and a switching element connected to the pixel electrode. The first substrate includes a scanning line extending in the first direction for supplying a scanning signal to the switching element, and a signal line extending in the second direction for supplying a video signal to the switching element. The light shielding layer further extends to overlap with the scanning line and the signal line.

7. A color filter substrate for holding a liquid crystal layer between an array substrate and the array substrate, wherein the array substrate comprises a plurality of pixels arranged in rows and columns in a first direction and a second direction, wherein the color filter substrate comprises: a plurality of color filters corresponding to the plurality of pixels; and Light-shielding layer, The plurality of pixels include a plurality of first pixels arranged in an oblique direction oblique 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 oblique direction. The plurality of color filters include a first color filter extending in the oblique direction so as to overlap with the plurality of first pixels, and a second color filter 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 with a boundary portion between the first color filter and the second color filter.

8. The color filter substrate according to claim 7, characterized in that: The display region where the color filter substrate or the plurality of pixels are arranged has a rectangular shape having a first side along the first direction and a second side along the second direction.

9. The color filter substrate according to claim 7, wherein: The display region where the color filter substrate or the plurality of pixels are arranged has a polygonal shape having at least sides along a direction intersecting the first direction and the second direction.

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