Liquid crystal panel and liquid crystal display device

Abstract

Provided is a liquid crystal panel which is capable of suppressing the occurrence of strabismus color mixing, has excellent transmittance, and is capable of meeting the need for high resolution. Also provided are a liquid crystal display device and a head-mounted display device provided with the liquid crystal panel. The liquid crystal panel includes: a first substrate having a plurality of pixels arranged in a matrix; a second substrate facing the first substrate; and a liquid crystal layer between the first substrate and the second substrate, the first substrate including a support substrate, a plurality of source wirings, a plurality of gate wirings, and a plurality of switching elements, each pixel being defined by two gate wirings adjacent to each other and two source wirings adjacent to each other, each pixel having a pixel electrode and a color filter layer, a first light-shielding layer is provided between two adjacent color filter layers, the second substrate includes a support substrate and a second light-shielding layer, and the first light-shielding layer and the second light-shielding layer are disposed in directions substantially orthogonal to each other.

Description

Technical Field

[0001] The following disclosure relates to a liquid crystal panel and a liquid crystal display device. Background Art

[0002] The liquid crystal panel, which is the main component of the liquid crystal display device, is typically a liquid crystal panel that has a TFT array substrate configured with pixel electrodes and switching elements and a color filter substrate as an opposing substrate bonded together via a liquid crystal layer. In such a liquid crystal panel, a voltage is applied to the liquid crystal layer, and the orientation of the liquid crystal molecules changes according to the applied voltage, thereby controlling the amount of light transmitted.

[0003] In recent years, there has been a demand for further high-resolution (i.e., high-resolution) liquid crystal panels. Compared with low-resolution liquid crystal panels, the area of ​​each pixel of a high-resolution liquid crystal panel is smaller. For example, in VR-HMD applications, it is desired that the pixel pitch be less than 10 μm. If the pixel becomes high-resolution, the impact of the reduction in aperture ratio becomes greater. Therefore, in order to ensure the aperture ratio, the line width of the light-shielding layer between adjacent different colors is designed to be as fine as about 3 μm on each substrate. The bonding of substrates to each other usually produces a deviation of about 1 to 2 μm (also called positional offset). Therefore, the narrower the line width of the light-shielding layer, the more obvious the problem of "squinting color mixing" is, such as the mixing of adjacent colors of light when light is obliquely transmitted through the liquid crystal layer, and the visual recognition is reduced.

[0004] As a technology for suppressing positional deviation when bonding substrates to each other, a technology for arranging a color filter on the side of a TFT array substrate, that is, a technology for setting the TFT array substrate to a COA (Color Filter On Array) structure has been developed. For example, Patent Document 1 discloses a color filter substrate having both a switch element and a color filter layer. Prior art literature Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2016-105121 Summary of the invention Technical Problems to be Solved by the Invention

[0006] Fig.17 FIG. 1 is a cross-sectional view schematically showing an example of a conventional liquid crystal panel 1R. Fig.17As shown, the liquid crystal panel 1R is composed of a TFT array substrate 10 and a counter substrate 30 bonded together via a liquid crystal layer 20. A color filter layer CF is formed on the counter substrate 30, and a light shielding layer BM is arranged so as to overlap the boundary between two adjacent color filter layers CF. In this case, in addition to a large positional offset during bonding, oblique color mixing occurs in which the color of the adjacent color filter layer CF is mixed into the light 1LB obliquely incident from the light source provided on the side opposite to the liquid crystal layer 20 of the TFT array substrate 10. Fig.17 This is a diagram for explaining a structure that causes oblique-view color mixing in a conventional liquid crystal panel.

[0007] Therefore, the inventors of the present invention have conducted in-depth research on the technology of suppressing strabismus color mixing, and focused on the situation that when the pixel electrode that restricts the orientation of the liquid crystal molecules is arranged on the side of the TFT array substrate, in order to achieve that strabismus color mixing does not occur even if there is a positional offset during bonding, it is necessary to set the TFT array substrate to a COA structure. For example, if it is set as follows: a color filter layer is arranged on the upper layer of the circuit of the TFT array substrate, and a contact portion that passes through the color filter layer is provided, and the circuit of the lower layer is connected to the pixel electrode of the upper layer via the contact portion, it is believed that a TFT array substrate of a COA structure can be obtained efficiently. However, it is necessary to configure a shading layer at the joint between adjacent colors to shield light. In addition, since the color filter layer is not arranged at the contact portion, it is necessary to shield the light that transmits the contact portion. Therefore, a grid-shaped black matrix (also called BM) surrounding each pixel is required.

[0008] Therefore, the configuration of the BM has been further studied. For example, when the BM is formed on the opposing substrate side, it is difficult to perform the function of shading the seam between colors in consideration of the positional offset when the substrates are bonded to each other. On the other hand, when the BM is formed on the TFT array substrate side, in the case of a resin BM, there are problems such as the height difference of the resin will damage the flatness of the substrate surface, hinder the orientation of the liquid crystal, reduce the contrast, and make it difficult to control the unit thickness, so it is difficult to apply. In order to reduce the height difference, it is also considered to make the BM out of a metal material (i.e., using a metal BM). However, the reflectivity of metal is high, which directly affects the reflectivity of the liquid crystal display device.

[0009] Patent document 1 proposes to specially divide the display part in a color filter substrate with a COA structure, and proposes to set a light shielding layer opposite to the gate wiring of the color filter substrate on the opposite substrate side. Patent document 1 discloses that in order to prevent light reflection generated by the source wiring: (i) an anti-reflection film made of materials such as T i N (titanium nitride) is formed on the surface of the source wiring, or (ii) the ends of the colored color filter overlap each other near the source wiring. By these methods, there is no need for a light shielding layer overlapping with the source wiring. However, the device cannot fully suppress the color mixing caused by the oblique view. In addition, since the light shielding caused by the overlapping of colors in (ii) will cause deviations in the width of the overlap of multiple colors, the film thickness of each color, etc., the light shielding characteristics are unstable. The anti-reflection film using T i N in (i) has a much higher reflectivity than the general resin BM, so it is not practical as a substitute for BM.

[0010] The present invention has been made in view of the above-mentioned current situation, and its object is to provide a liquid crystal panel that can suppress the occurrence of color mixing at side angles, has excellent transmittance, and can meet the demand for higher resolution. The present invention also aims to provide a liquid crystal display device and a head mounted display device including such a liquid crystal panel. Solutions to the problem

[0011] (1) A liquid crystal panel according to one embodiment of the present invention comprises: a first substrate having a plurality of pixels arranged in a matrix; a second substrate opposite to the first substrate; and a liquid crystal layer located between the first substrate and the second substrate, wherein the first substrate comprises a supporting substrate, a plurality of source wirings, a plurality of gate wirings and a plurality of switching elements, the plurality of gate wirings being approximately orthogonal to the source wirings, the plurality of switching elements being arranged at intersections of the source wirings and the gate wirings, each pixel being defined by two adjacent gate wirings and two adjacent source wirings, each pixel having a pixel electrode and a color filter layer, a first light shielding layer being provided between the two adjacent color filter layers, and the second substrate comprising a supporting substrate and a second light shielding layer, the first light shielding layer and the second light shielding layer being arranged in directions approximately orthogonal to each other.

[0012] (2) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of the above-mentioned (1), wherein the above-mentioned first light-shielding layer overlaps with one of the above-mentioned gate wiring or the above-mentioned source wiring, and the above-mentioned second light-shielding layer overlaps with the other of the above-mentioned gate wiring or the above-mentioned source wiring.

[0013] (3) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1) or (2), wherein the first light-shielding layer overlaps with the source wiring, and the second light-shielding layer overlaps with the gate wiring.

[0014] (4) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1), (2) or (3), wherein the first light-shielding layer is made of a metal material and the second light-shielding layer is made of a resin material.

[0015] (5) In addition, another embodiment of the present invention is a liquid crystal panel based on the structure of (4) above, wherein the first light shielding layer has a multilayer structure including two or more metal layers arranged with an insulating layer interposed therebetween.

[0016] (6) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (3), (4) or (5), wherein the width of the second light-shielding layer is less than the width of the gate wiring.

[0017] (7) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1), (2), (3), (4), (5) or (6), wherein the first substrate also includes a common electrode.

[0018] (8) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (7) above, wherein the first light shielding layer is made of a metal material and is arranged to be in contact with the common electrode.

[0019] (9) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1), (2), (3), (4), (5), (6), (7) or (8), wherein the first substrate also includes a first horizontal orientation film, and the first horizontal orientation film is configured in such a manner that one surface of the first horizontal orientation film is in contact with the liquid crystal layer and the other surface of the first horizontal orientation film is in contact with the first light-shielding layer, and the second substrate also includes a second horizontal orientation film, and the second horizontal orientation film is in contact with the liquid crystal layer.

[0020] (10) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1), (2), (3), (4), (5), (6), (7), (8) or (9), wherein each pixel further has a contact hole, the contact hole is arranged in the color filter layer, the switching element is electrically connected to the pixel electrode via the contact hole, and the second light shielding layer overlaps with the contact hole.

[0021] (11) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1), (2), (3), (4), (5), (6), (7), (8), (9) or (10), wherein at least one of the plurality of pixels further has a columnar spacer, the columnar spacer overlaps with the second light-shielding layer, and the width of the columnar spacer is greater than the width of the second light-shielding layer.

[0022] (12) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (1), (2), (3), (4), (5), (6), (7), (8), (9), (10) or (11), wherein the position where the second substrate overlaps with the first shading layer also includes a third shading layer.

[0023] (13) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (12) above, wherein the first light-shielding layer is made of a metal material and the third light-shielding layer is made of a resin material.

[0024] (14) In addition, an embodiment of the present invention is a liquid crystal panel based on the structure of (12) or (13), wherein the width of the third light-shielding layer is less than the width of the first light-shielding layer.

[0025] (15) In addition, a liquid crystal display device according to another embodiment of the present invention comprises a liquid crystal panel according to (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13) or (14).

[0026] (16) In addition, a head-mounted display device according to another embodiment of the present invention comprises a liquid crystal panel according to (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13) or (14). Effects of the Invention

[0027] According to the present invention, a liquid crystal panel can be provided which can suppress the occurrence of color mixing at side angles, has excellent transmittance, and can meet the demand for higher resolution. In addition, the present invention can also provide a liquid crystal display device and a head mounted display device including such a liquid crystal panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a diagram conceptually showing the structure of a liquid crystal panel. Figure 2 This is a schematic plan view of the entire liquid crystal panel as viewed from the observation surface side. Figure 3 It is a schematic plan view showing a part of the liquid crystal panel in an enlarged manner. Figure 4 So Figure 3 The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view). Figure 5 It is a diagram for explaining the light shielding structure. Figure 6 is a schematic cross-sectional view of a liquid crystal display device. Figure 7 It is a perspective schematic diagram showing an example of the appearance of the HMD. Figure 8 It is a schematic plan view showing a part of the liquid crystal panel in an enlarged manner. Fig. 9 So Figure 8 The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view). Fig.10 So Figure 3 The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view). Fig.11 It is magnified Fig.10 The figure is within the ellipse shown by the dotted line. Fig.12 It is a diagram for explaining the light shielding structure. Fig.13A It is magnified Fig.10 The figure is within the ellipse shown by the dotted line. Fig. 13B It is magnified Fig.10 The figure is within the ellipse shown by the dotted line. Fig. 13C It is magnified Fig.10 The figure is within the ellipse shown by the dotted line. Fig.14 So Figure 3 The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view). Fig.15 It focuses on Fig.14 Schematic cross-sectional view of the third light-shielding layer BMb2 and the first light-shielding layer BMa. Fig.16 It is a diagram for explaining the light shielding structure. Fig.17 This is a diagram for explaining a structure that causes oblique-view color mixing in a conventional liquid crystal panel. DETAILED DESCRIPTION

[0029] (Definition of terms) In this specification, the observation side refers to the side closer to the screen (display surface) of the display device, and the back side refers to the side farther from the screen (display surface) of the display device.

[0030] Approximately parallel means that the angle (absolute value) formed by the two is within the range of 0°±10°, preferably within the range of 0°±5°, and more preferably within 0° (i.e. parallel in a narrow sense). In addition, approximately orthogonal (or approximately perpendicular) means that the angle (absolute value) formed by the two forms an angle within the range of 90°±10°, preferably within the range of 90°±5°, and more preferably within 90° (i.e. orthogonal or perpendicular in a narrow sense).

[0031] The transmittance refers to visible light transmittance. Visible light refers to light with a wavelength of 380 nm or more and less than 800 nm.

[0032] Hereinafter, a liquid crystal panel and a liquid crystal display device according to embodiments of the present invention will be described. The present invention is not limited to the contents described in the following embodiments, and the design can be appropriately changed within the scope of the configuration satisfying the present invention. In the drawings, (R), (G), and (B) added after the reference numerals of the color filter layer CF and the pixel Px respectively mean red, green, and blue, but are not particularly limited.

[0033] (Implementation Method 1) Figure 1 This is a diagram conceptually showing the structure of a liquid crystal panel according to an example of the present embodiment. Figure 2 It is a schematic plan view of the entire liquid crystal panel as viewed from the observation surface side. Figure 3 It is a schematic plan view showing a part of the liquid crystal panel in an enlarged manner. Figure 4 So Figure 3 The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view).

[0034] like Figure 1 As shown, the liquid crystal panel 1X has a first substrate 10, a liquid crystal layer 20, and a second substrate 30 in this order. That is, the liquid crystal layer 20 has a structure sandwiched between the first substrate 10 and the second substrate 30 arranged opposite to each other. For example, from the back side toward the observation side, the first substrate 10, the liquid crystal layer 20, and the second substrate 30 are arranged in this order. The liquid crystal layer 20 is usually sealed between the first substrate 10 and the second substrate 30 by a sealant (not shown).

[0035] The first substrate 10 has a plurality of pixels Px arranged in a matrix (see Figure 2). Specifically, it includes a supporting substrate 100, a plurality of source wirings (also called signal lines) SL arranged on the supporting substrate 100, a plurality of gate wirings (also called scanning lines) GL, and a plurality of switching elements 110. The supporting substrate 100 is preferably transparent and insulating. As the supporting substrate 100, for example, a glass substrate or a plastic substrate can be cited.

[0036] like Figure 2 As shown, a plurality of source wirings SL are arranged approximately parallel to each other along the column direction (the vertical direction in the figure) on the display portion AA in the center of the liquid crystal panel 1X. A plurality of gate wirings GL are arranged approximately parallel to each other along the row direction (the horizontal direction in the figure) in a manner that intersects approximately perpendicularly with each source wiring SL. These plurality of source wirings SL and plurality of gate wirings GL are formed into a matrix (grid) shape as a whole in a manner that divides each pixel. A roughly rectangular area surrounded by two mutually adjacent gate wirings GL and two mutually adjacent source wirings SL becomes a pixel. That is, each pixel Px is defined by two mutually adjacent gate wirings GL and two mutually adjacent source wirings SL, respectively. In Figure 2 In the embodiment, the gate driver GD is arranged on both sides of the display portion AA (the left and right sides in the drawing), but the gate driver GD may be arranged on either side.

[0037] In each pixel Px, a switching element 110 is arranged at the intersection of the source wiring SL and the gate wiring GL. In the present embodiment, a thin film transistor (TFT) is used as the switching element 110. The TFT 110 (more specifically, the semiconductor portion of the TFT) is connected to a bridge electrode 121 in a drain contact portion (also referred to as a first contact portion or a first contact hole) CH1, and the bridge electrode 121 extends to a position overlapping with the gate wiring GL (see FIG. 1 ). Figure 4 The portion of the source wiring SL that overlaps with the semiconductor portion of the TFT becomes the source electrode of the TFT, and the portion of the gate wiring GL that overlaps with the semiconductor portion of the TFT becomes the gate electrode of the TFT (not shown).

[0038] like Figure 4As shown, a color filter layer CF is arranged above the gate wiring GL, the source wiring SL and the bridge electrode 121 (however, the support substrate 100 side is regarded as the bottom). A second contact portion (also referred to as a second contact hole) CH2 is provided on the color filter layer CF in a manner overlapping with the gate wiring GL, and the bridge electrode 121 and the first electrode 122 are connected via the second contact hole CH2. The first electrode 122 becomes a pixel electrode. That is, the TFT 110 is electrically connected to the pixel electrode 122 via the second contact hole CH2. An insulating film 130 is formed on the pixel electrode 122, and a second electrode 123 is formed thereon. The second electrode 123 becomes a common electrode (also referred to as a common electrode). An insulating film and a planarizing film (reference numeral 130 in the figure) are provided between each layer and between electrodes as needed.

[0039] The pixel electrode 122 is arranged in each of the plurality of pixels Px, and the common electrode 123 is arranged in a manner opposite to the plurality of pixel electrodes 122 arranged in each pixel Px. The common electrode 123 is provided with a dot-shaped, slit-shaped or other gap in the pixel portion in the planar electrode. In addition, the bridge electrode 121, the pixel electrode 122 and the common electrode 123 are preferably transparent electrodes. As the transparent electrode, for example, it is preferably formed of a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), tin oxide (SnO) or an alloy thereof.

[0040] The color filter layer CF is disposed on each pixel Px of the first substrate 10. Figure 3 and Figure 4 In the example, the first pixel Px1 has a red color filter layer CF(R), and the second pixel Px2 adjacent to the first pixel Px1 has a green color filter layer CF(G). A first light shielding layer BMa is provided between the two adjacent color filter layers CF (see Figure 4 ). “A first light shielding layer BMa is provided between the two adjacent color filter layers CF” means that the first light shielding layer BMa is arranged so as to overlap the boundary of the two adjacent color filter layers CF. When viewed from above, the first light shielding layer BMa is visually recognized as being arranged between the two adjacent color filter layers CF. Figure 4 In the embodiment, the first light-shielding layer BMa is arranged so as to overlap with both of the two color filter layers CF adjacent to each other, and therefore, also overlaps with the boundary between the color filter layers CF.

[0041] The second substrate 30 is disposed opposite to the first substrate 10, and includes a support substrate 300 and a second light shielding layer BMb. In order to flatten the surface, it is preferable to further include a flattening film 330 (see Figure 4The supporting substrate 300 is preferably transparent and insulating. Examples of the supporting substrate 300 include a glass substrate and a plastic substrate.

[0042] The first light shielding layer BMa of the first substrate 10 and the second light shielding layer BMb of the second substrate 30 are arranged in directions substantially orthogonal to each other. The first light shielding layer BMa shields the seams between adjacent colors, and also sufficiently suppresses the mixing of adjacent colors observed from an oblique direction. That is, for example, when the light source is arranged on the side of the first substrate 10 opposite to the liquid crystal layer 20, as Figure 5 As shown, light 1LB obliquely incident from the light source to the vicinity of the boundary between the two color filter layers CF is shielded by the first light shielding layer BMa. Therefore, mixing of adjacent colors is suppressed. Since the seams between adjacent colors are also shielded, the display quality is improved. Figure 5 It is a diagram for explaining the shading structure. On the other hand, by providing the second shading layer BMb on the side of the second substrate 30, the shape of the electrode arranged on the first substrate 10 can be designed not to be affected by the shape of the second shading layer BMb, so that an electrode shape with excellent transmittance can be adopted. In addition, reflection suppression can also be achieved. In this way, by respectively providing shading layers on the first substrate 10 and the second substrate 30 arranged opposite to each other with the liquid crystal layer 20 sandwiched therebetween, and arranging the shading layers in directions substantially orthogonal to each other, the transmittance can be improved while suppressing the occurrence of oblique color mixing. Therefore, a high-resolution liquid crystal panel with excellent display quality can be well realized.

[0043] In particular, it is preferred that one of the first light shielding layer BMa and the second light shielding layer BMb is arranged along the column direction, and the other is arranged along the row direction. Among them, from the viewpoint of further exerting the light shielding characteristics, it is more preferred that the first light shielding layer BMa overlaps with one of the gate wiring GL or the source wiring SL, and the second light shielding layer BMb overlaps with the other. It is further preferred that the first light shielding layer BMa overlaps with the source wiring SL, and the second light shielding layer BMb overlaps with the gate wiring GL. Each light shielding layer can be separated in a dotted line in a row direction or a column direction, or can be arranged as a connected one.

[0044] In this embodiment, the first light shielding layer BMa overlaps with the source wiring SL, and the second light shielding layer BMb overlaps with the gate wiring GL (see Figure 4 ). The second light shielding layer BMb also overlaps with the second contact hole CH2. Therefore, for example, when the light source is disposed on the side of the first substrate 10 opposite to the liquid crystal layer 20, as shown in FIG. Figure 5As shown, the light 1LA transmitted from the light source through the periphery of the second contact hole CH2 is shielded by the second light shielding layer BMb. Generally, the light transmitted through the periphery of the second contact hole CH2 sometimes causes a decrease in color purity, but in this embodiment, since the transmitted light 1LA is shielded by the second light shielding layer BMb, the decrease in color purity is fully suppressed.

[0045] Each shading layer is preferably made of a material that is usually used as a black matrix (also referred to as BM). Specifically, a resin material or a metal material is preferred. As a resin material, a black photosensitive resin material is preferred. In addition, as a metal material, a single metal material containing one metal and a composite metal material containing two or more metals can be listed. Specifically, for example, titanium (Ti), molybdenum (Mo), aluminum (Al), molybdenum tungsten (MoW), etc. are preferred. In addition, in the case where the shading layer is made of a metal material, from the viewpoint of reflective characteristics, it is preferred to implement a blackening treatment on the surface of the shading layer. As a blackening treatment, for example, a surface blackening treatment based on multilayer film interference can be listed (the details will be described later in Implementation 3).

[0046] From the viewpoint of blocking transmitted light, the thickness of each shading layer is preferably more than 10nm, more preferably more than 50nm. In addition, from the viewpoint of reducing the height difference of the film surface, the upper limit is preferably less than 1000nm, more preferably less than 300nm. The thickness mentioned here refers to its total thickness when the shading layer is a multilayer structure.

[0047] In the present embodiment, the first light shielding layer BMa is formed in a manner overlapping with the source wiring SL, and is formed in a manner clamping the seam between adjacent colors (i.e., the boundary between adjacent color filter layers CF) together with the source wiring SL. Thus, the occurrence of cross-view color mixing is more fully suppressed. In addition, in order to set such a configuration, it is preferred that the first light shielding layer BMa is formed at a position higher than the color filter layer CF (wherein the liquid crystal layer 20 side is set as the upper direction). In addition, from the viewpoint of suppressing the surface height difference on the liquid crystal layer 20 side of the first substrate 10, it is more preferred to make the first light shielding layer BMa from a metal material rather than a resin material that is easily formed into a thick film. That is, it is preferred that the first light shielding layer BMa is made of a metal material.

[0048] The first light shielding layer BMa is preferably disposed on an upper layer or a lower layer of the common electrode 123 in direct contact with the common electrode 123. In this embodiment, the surface of the first light shielding layer BMa opposite to the liquid crystal layer 20 is in contact with the common electrode 123 (see Figure 4). By configuring the first light shielding layer BMa in contact with the common electrode 123, the disorder of the liquid crystal orientation caused by the height difference can be further suppressed. In particular, when the first light shielding layer BMa is made of a metal material, if the first light shielding layer BMa is configured in contact with the common electrode 123, the metal material has conductivity, thereby further suppressing the disorder of the liquid crystal orientation caused by the height difference.

[0049] The width W1 of the first light shielding layer BMa is not particularly limited as long as it can shield the seams between adjacent colors and suppress the mixing width of adjacent colors when viewed obliquely. For example, if it is 2 μm or more, such an effect can be fully exerted, so it is preferred. The upper limit is not particularly limited, for example, it is preferably 10 μm or less. In this specification, "width" refers to the width when viewed from above.

[0050] In this embodiment, the second light shielding layer BMb is formed on the second substrate 30 side in a manner overlapping the gate wiring GL and the second contact hole CH2. The second light shielding layer BMb is preferably made of a resin material or a metal material, and preferably made of a resin material. If made of a resin material, it becomes easier to form a pattern of an electrode for controlling the orientation of the liquid crystal in the first substrate 10, and it is also easy to adjust the width W2 of the second light shielding layer BMb. Therefore, it is particularly preferred that the first light shielding layer BMa is made of a metal material and the second light shielding layer is made of a resin material.

[0051] Preferably, the width W2 of the second light-shielding layer BMb is less than the width of the wiring in the gate wiring GL or the source wiring SL that overlaps with the second light-shielding layer BMb. That is, it is preferably configured so that, when viewed from above, the second light-shielding layer BMb is arranged at a position further inward than the wiring. Thus, the reduction in the aperture ratio can be sufficiently suppressed, thereby achieving higher resolution. In the present embodiment, the second light-shielding layer BMb overlaps with the gate wiring GL, so W2 is preferably less than the width of the gate wiring GL. The specific size varies depending on the pixel pitch. For example, in the case of a high-resolution liquid crystal panel with a pixel pitch of less than 10μm, W2 is preferably less than 5μm. More preferably, it is less than 4μm. In order to be able to shield the second contact hole CH2, W2 is also preferably greater than the width of the contact hole CH2. Specifically, W2 is preferably greater than 1μm.

[0052] Generally, in existing liquid crystal panels with a pixel pitch of 20 μm or more, the BM in the row direction and the BM in the column direction are formed in a grid shape. Generally, the width of the BM in the column direction is 4 μm or more, and the width of the BM in the row direction is 10 μm or more, and the metal wiring of the TFT array substrate is arranged on the inner side of these BMs when viewed from above. That is, in order to prevent the metal wiring from being exposed, the width of the BM is generally made wider than the metal wiring. This is because if the metal wiring is exposed in the opening, the light scattering of the metal edge becomes the main reason for reducing the contrast. However, in a high-resolution liquid crystal panel with a pixel pitch of less than 10 μm, if the width of the BM is made wider than the metal wiring as in the past, the impact of the reduction in the aperture ratio becomes greater, and the processing of the BM becomes difficult. In addition, the corners of the openings of the grid-shaped BM are rounded at the intersections, so the transmission aperture ratio is sometimes impaired. Therefore, it is not preferred to apply the grid-shaped BM in ultra-high-resolution models where it is difficult to ensure the aperture ratio. If only the transmission quality is to be ensured, it is sufficient to use only the first light shielding layer BMa (BMa overlapping with the source wiring SL in this embodiment), but in order to further ensure the reflection quality, it is important to apply the second light shielding layer BMb. The second light shielding layer BMb is preferably arranged at a position closer to the inside than the metal wiring, thereby being able to fully prevent the transmittance reduction caused by the second light shielding layer BMb.

[0053] Alignment films (not shown) are respectively arranged on the surfaces of the first substrate 10 and the second substrate 30 that are in contact with the liquid crystal layer 20 as required. The alignment films are preferably horizontal alignment films. That is, it is preferred that the first substrate 10 has a first horizontal alignment film, which is arranged in such a way that one surface of the first horizontal alignment film is in contact with the liquid crystal layer 20 and the other surface of the first light shielding layer BMa, and the second substrate 30 has a second horizontal alignment film in contact with the liquid crystal layer 20.

[0054] As described above, an insulating film and a planarizing film (reference numerals 130 and 330 in the figure) are provided in the first substrate 10 and the second substrate 30 as required. The insulating film also includes a dielectric film. As the insulating film and the planarizing film, for example, there can be mentioned an organic insulating film obtained using an organic insulating material, an inorganic insulating film obtained using an inorganic insulating material, and a laminate of an organic insulating film and an inorganic insulating film. As the organic insulating film, for example, there can be listed organic films such as acrylic resin, polyimide resin, and phenolic varnish resin (relative dielectric constant ε=2 to 5), and their laminates. The film thickness of the organic insulating film is preferably, for example, not less than 1 μm and not more than 4 μm. From the viewpoint of preventing stray light, the film thickness of the organic insulating film is preferably thinner. As the inorganic insulating film, for example, there can be listed inorganic films such as silicon nitride (SiNx) and silicon oxide (SiO2) (relative dielectric constant ε=3.5 to 8), and their laminates. The film thickness of the inorganic insulating film is preferably, for example Above and In the following, an organic insulating film and an inorganic insulating film are selected and applied appropriately.

[0055] The liquid crystal panel 1X can display by applying a voltage between the pixel electrode and the common electrode to apply a transverse electric field (including a fringe electric field) or a longitudinal electric field to the liquid crystal layer. As the transverse electric field mode, the FFS (Fringe Field Switching) mode and the IPS (In Plane Switching) mode in which the liquid crystal molecules in the liquid crystal layer are oriented parallel to the substrate surface when no voltage is applied can be cited. As the longitudinal electric field mode, the vertical alignment (VA) in which the liquid crystal molecules in the liquid crystal layer are oriented vertically to the substrate surface when no voltage is applied can be cited.

[0056] The liquid crystal panel 1X may be a low-resolution liquid crystal panel or a high-resolution liquid crystal panel. As described above, color mixing due to squinting becomes a particularly significant problem in a high-resolution liquid crystal panel, but the liquid crystal panel according to the present invention can suppress the occurrence of color mixing due to squinting and has excellent transmittance even in the case of a high-resolution liquid crystal panel. Therefore, the liquid crystal panel of this embodiment is preferably a high-resolution liquid crystal panel.

[0057] The method for manufacturing the liquid crystal panel 1X is not particularly limited. For example, the first substrate 10 and the second substrate 30 are bonded to each other via a columnar spacer, and the gap is filled with a liquid crystal material to form the liquid crystal layer 20, and then the liquid crystal panel 1X can be manufactured by cutting the obtained structure.

[0058] Next, a liquid crystal display device 1 including the liquid crystal panel 1X according to the present embodiment will be described by way of example. Figure 6 Schematic cross-sectional view of the liquid crystal display device of this embodiment. Figure 6 As shown, the liquid crystal display device 1 of this embodiment includes a liquid crystal panel 1X of this embodiment and a backlight BL as a light source.

[0059] The backlight source BL is not particularly limited as long as it is a structure for irradiating light, and can be a direct-down type, an edge type, or any other type. Specifically, for example, the backlight source BL preferably includes a light source unit including a light guide plate and a light source, a reflective sheet, and a diffuser. As the light source, for example, a light emitting diode (LED) can be used.

[0060] In addition to the above-mentioned components, the liquid crystal display device 1 is composed of a plurality of components such as a polarizing plate; external circuits such as TCP (carrier package) and PCB (printed wiring substrate); optical films such as a viewing angle expansion film and a brightness enhancement film; and an outer frame (frame). Through the components, other components can also be assembled. There is no particular limitation on components other than those already described, and components commonly used in the field of liquid crystal display devices can be used, so the description is omitted.

[0061] Figure 7 1 is a perspective schematic diagram showing an example of the appearance of the liquid crystal display device 1 according to the present embodiment when used as a head mounted display (HMD), that is, an example of the appearance of an HMD having a liquid crystal panel according to the present embodiment. Figure 7 As shown, the head mounted display 1000 is a display device that includes a liquid crystal panel 1X of this embodiment for displaying images, an optical element 2, and a backlight (not shown) and can be worn on the head of a user. The optical element 2 is, for example, a lens. This figure illustrates a binocular HMD, but a monocular HMD may also be used.

[0062] The display mode of the HMD is not particularly limited, and various display modes such as a horizontal alignment mode and a vertical alignment mode are preferably used. For example, as an HMD using the horizontal alignment mode, it is preferable to use a technique in which the opening shape of the electrode used for forming the fringe electric field has a characteristic, as described in Japanese Patent Laid-Open No. 2009-113584.

[0063] (Implementation Method 2) In this embodiment, features unique to this embodiment are mainly described, and descriptions of contents overlapping with those of the above-described Embodiment 1 are omitted. This embodiment is different from Embodiment 1 mainly in that a columnar spacer PS is arranged.

[0064] Figure 8 It is a schematic plan view showing a part of a liquid crystal panel in an enlarged manner according to an example of the present embodiment. Fig. 9 So Figure 8 The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view).

[0065] like Figure 8 as well as Fig. 9 As shown, at least one of the plurality of pixels Px (in Figure 8 The columnar spacer PS is also called a light spacer and is arranged to facilitate the control of the thickness of the liquid crystal layer 20 (also called a cell gap or a cell thickness). The light spacer PS is arranged between the first substrate 10 and the second substrate 30 so as to overlap with the second light shielding layer BMb (see Fig. 9 ).

[0066] The optical spacer PS may also extend from the second light-shielding layer BMb when viewed from above. That is, the width W3 of the optical spacer PS may also be larger than the width W2 of the second light-shielding layer BMb. As described above, W2 is preferably less than 5 μm, and W3 is preferably greater than 5 μm, for example, in order to fully maintain the thickness of the liquid crystal layer 20 relative to the external pressure. In this case, it is roughly reliably set to the case where the optical spacer PS extends from the second light-shielding layer BMb when viewed from above. The width W3 of the optical spacer PS refers to the diameter when the shape of the optical spacer is roughly circular when viewed from above.

[0067] From the viewpoint of preventing a decrease in contrast, it is preferred to shield the periphery of the photo spacer PS from light. Specifically, it is preferred that, in the first substrate 10, the width of the wiring overlapping the photo spacer PS is expanded, or the metal layer 140 other than the wiring is arranged at a position overlapping the photo spacer PS. In the present embodiment, on the first substrate 10, the metal layer 140 is arranged at a position overlapping the photo spacer PS (see Fig. 9 ) In order to shield the periphery of the photosensitive spacer PS, the metal layer 140 is set to a size that includes the photosensitive spacer PS when viewed from above.

[0068] The metal layer 140 refers to a layer composed of metal other than wiring (e.g., source wiring SL and gate wiring GL). As a material forming the metal layer 140, a single metal material containing one metal and a composite metal material containing two or more metals can be cited. Specifically, for example, molybdenum (Mo), molybdenum tungsten (MoW), etc. are preferred.

[0069] In existing liquid crystal panels, a configuration is generally adopted in which BM is arranged around the optical spacer and the optical spacer does not extend from the BM. This is because the orientation of the liquid crystal molecules around the optical spacer is disturbed from the desired orientation direction, which becomes the main reason for the reduction in contrast. Usually, in order to maintain the thickness of the liquid crystal layer relative to the external pressure, the optical spacers are mostly formed with a diameter of 6μm or more. In this case, if the width of the BM arranged around the optical spacer is set to 5μm or less, the optical spacer extends from the BM when viewed from above. In addition, it is very difficult to control the processing by only partially widening the BM around the optical spacer. However, in the present embodiment, even if the optical spacer PS is configured to extend from the second light shielding layer BMb when viewed from above, it is possible to prevent the contrast from being reduced.

[0070] (Implementation 3) In this embodiment, features unique to this embodiment are mainly described, and descriptions of contents overlapping with those of the above-described Embodiment 1 are omitted. This embodiment is substantially the same as Embodiment 1 except that the configuration of the first light shielding layer BMa is different.

[0071] Fig.10 So Figure 3The AB line in the figure is the cross-sectional view of the section (AB line cross-sectional view). Fig.11 It is magnified Fig.10 The figure is within the ellipse shown by the dotted line. Fig.11 As shown, the first light shielding layer BMa is arranged on the common electrode 123 (where the liquid crystal layer 20 side is set as the upper side) in cross-sectional observation, and has a multilayer structure in which two or more metal layers are arranged with an insulating layer interposed therebetween. Specifically, the first light shielding layer BMa is composed of a four-layer structure including a first metal layer 41, a first insulating layer 51, a second metal layer 42, and a second insulating layer 52 in sequence. The first metal layer 41 is arranged on the common electrode 123, and the second metal layer 42 is arranged thereon with the first insulating layer 51 interposed thereon. The second insulating layer 52 is further stacked on the second metal layer 42.

[0072] The film thickness of the first metal layer 41 located closest to the support substrate 100 among the metal layers constituting the first light-shielding layer BMa varies depending on the type of metal, but is preferably 10 to 100 nm, for example.

[0073] The first insulating layer 51 is disposed on the first metal layer 41. The optimum film thickness of the first insulating layer 51 varies depending on the first metal layer 41, the film type of the upper layer described later, and the refractive index of the insulating layer itself, and is most preferably 50 to 60 nm.

[0074] The second metal layer 42 is disposed on the first insulating layer 51. The reflectance of the multilayer film interference varies according to the balance between the transmittance and reflectance of this layer. The thickness of the second metal layer 42 for minimizing the reflectance varies depending on the metal type, but is most preferably 3 to 5 nm.

[0075] A second insulating layer 52 is disposed on the second metal layer 42. The second insulating layer 52 is provided to protect the second metal layer 42 and maintain the reflective property. Considering the liquid crystal orientation, the thinner the film thickness is, the more preferable, and 20 to 30 nm is most preferable.

[0076] Examples of materials for forming the metal layers 41 and 42 include a single metal material containing one metal and a composite metal material containing two or more metals. Specifically, for example, molybdenum (Mo), molybdenum tungsten (MoW), titanium (Ti), and the like are preferred.

[0077] The insulating layers 51 and 52 are preferably transparent, and preferably inorganic insulating films obtained using inorganic insulating materials. Examples of inorganic insulating films include inorganic films (relative dielectric constant ε = 5 to 7) such as silicon nitride (SiNx) and silicon oxide (SiO2), and laminated films thereof. Among them, SiN is most preferred because the higher the refractive index, the thinner the film thickness.

[0078] In this embodiment, the first light shielding layer BMa is configured as the multilayer structure, thereby achieving low reflection based on multilayer film interference. For example, when the light source is disposed on the side of the first substrate 10 opposite to the liquid crystal layer 20, as shown in FIG. Fig.12 As shown, the transmitted light 1L from the light source is shielded by the first metal layer 41, while the reflected light (i.e., light based on metal reflection) 3L generated by the first metal layer 41 is offset. In this way, the first light shielding layer BMa of this embodiment can take into account both the shielding of the transmitted light and the low reflection, so the display quality is better. Fig.12 It is a diagram for explaining a light shielding structure.

[0079] (Variation 1 of Implementation Method 3) The structure for achieving low reflection based on multilayer film interference is not limited to the structure of Embodiment 3. For example, in the first light shielding layer BMa of Embodiment 3, the first metal layer 41 can also be configured as the lower layer of the common electrode 123, and the second metal layer 42 can be configured as the upper layer of the common electrode 123 (cross-sectional observation). In this case, a multilayer film interference blackening film is obtained in which the common electrode 123 assumes the function of the first insulating layer 51. In this structure, the first insulating layer 51 is not required. Fig.13A An example of the layer structure of the first light-shielding layer BMa in this example is shown in FIG. Fig.13A It is magnified Fig.10 The figure within the ellipse shown by the dotted line (sectional schematic diagram).

[0080] (Variation 2 of Implementation Method 3) In Embodiment 3, the first light shielding layer BMa may be disposed below the common electrode 123 (cross-sectional observation). In other words, the common electrode 123 may be disposed on the upper layer of the second insulating layer 52 of the first light shielding layer BMa in Embodiment 3. In this configuration, low reflection based on multilayer film interference may also be achieved. In this case, the second insulating layer 52 may not be present. In other words, the second insulating layer 52 may be removed. Fig. 13B An example of the layer structure of the first light-shielding layer BMa in this example is shown in FIG. Fig. 13B It is magnified Fig.10 The figure within the ellipse shown by the dotted line (sectional schematic diagram).

[0081] (Variation 3 of Implementation Example 3) In Embodiment 3, it is also possible to configure a second common electrode 124 on the first light shielding layer BMa, and sandwich the first light shielding layer BMa between the common electrode 123 and the second common electrode 124 (cross-sectional observation). In this configuration, low reflection based on multilayer film interference can also be achieved. In this case, the second insulating layer 52 may not be present. That is, the second insulating layer 52 may also be removed. Fig. 13C An example of the layer structure of the first light-shielding layer BMa in this example is shown in FIG. Fig. 13C It is magnified Fig.10 The figure within the ellipse shown by the dotted line (sectional schematic diagram).

[0082] (Implementation 4) In this embodiment, the features unique to this embodiment are mainly described, and the description of the contents repeated in the above-mentioned embodiment 1 is omitted. This embodiment is substantially the same as embodiment 1, except that the second substrate 30 has a third light shielding layer at a position overlapping with the first light shielding layer BMa. That is, the second substrate 30 has a third light shielding layer BMb2 in addition to the second light shielding layer BMb (for convenience, referred to as the second light shielding layer BMb1).

[0083] Fig.14 So Figure 3 The AB line in FIG. 2 is a cross-sectional view (AB line cross-sectional view). The third light shielding layer BMb2 is arranged in a position overlapping with the first light shielding layer BMa in the second substrate 30 .

[0084] In this embodiment, from the viewpoint of suppressing the surface height difference on the liquid crystal layer 20 side of the first substrate 10, it is also preferred that the first light shielding layer BMa is supported by a metal material. On the other hand, from the viewpoint of suppressing the metal reflection generated by the first light shielding layer BMa, the third light shielding layer BMb2 is preferably made of a resin material.

[0085] The width of the third light shielding layer BMb2 is preferably equal to or smaller than the width W1 of the first light shielding layer BMa. Thus, the metal reflection caused by the first light shielding layer BMa made of a metal material can be sufficiently suppressed without reducing the transmission characteristics.

[0086] Here, from the viewpoint of suppressing metal reflection without reducing transmittance, it is ideal that the width of the first light shielding layer BMa is equal to the width of the third light shielding layer BMb2, and there is no positional offset when the first substrate 10 and the second substrate 30 are attached. However, positional offset may actually occur, so it is preferred to prioritize the transmission aperture ratio and design the third light shielding layer BMb2 so that the width is 0 to 0.5 μm on one side and further inside than the width of the first light shielding layer BMa. That is, Fig.15 The p1 and p2 shown are preferably 0 to 0.5 μm, respectively. The sum of p1 and p2 (i.e., p1+p2) is equivalent to the value obtained by subtracting the width of the third light shielding layer BMb2 from the width of the first light shielding layer BMa. The widths mentioned here are also the widths when viewed from above. Fig.15 In the middle, it is equivalent to the length in the left-right direction. Fig.15 It focuses on Fig.14The schematic cross-sectional view of the third light-shielding layer BMb2 and the first light-shielding layer BMa in FIG. 1 is a view for explaining the relationship between the widths of the respective light-shielding layers.

[0087] In this embodiment, for example, Fig.16 As shown, the reflected light (i.e., light generated by metal reflection) 3L generated by the first light shielding layer BMa is blocked (shielded) by the third light shielding layer BMb2 disposed at a position opposite to the liquid crystal layer 20. On the other hand, for example, when a light source is disposed on the side of the first substrate 10 opposite to the liquid crystal layer 20, the transmitted light 1L from the light source is not shielded by the third light shielding layer BMb2 and is transmitted. Therefore, it is possible to realize a liquid crystal panel 1X that minimizes the reflection of the first light shielding layer BMa on the first substrate 10 side without reducing the transmission characteristics. Fig.16 It is a diagram for explaining a light shielding structure.

[0088] As mentioned above, although embodiment of this invention was demonstrated, each matter demonstrated is applicable to this invention as a whole.

[0089] Hereinafter, although the present invention will be described in more detail with reference to Examples and Comparative Examples, the present invention is not limited to these Examples.

[0090] (Example 1) The liquid crystal panel of this example corresponds to the liquid crystal panel of the above-mentioned Embodiment 1 (see Figures 1 to 5 ). When manufacturing the liquid crystal panel 1X of this example, the first light shielding layer BMa is formed in a manner that overlaps with a plurality of source wirings SL and, together with the source wirings SL, clamps the seam between two adjacent colors (i.e., the boundary between adjacent color filter layers CF). The first light shielding layer BMa is made of a metal material and is formed to be in direct contact with the common electrode 123. On the other hand, the second light shielding layer BMb is made of a resin material or a metal material in a manner that two-dimensionally overlaps the gate wiring GL and the second contact hole CH2 on the second substrate 30. Thereafter, a planarizing film 330 is provided to planarize the surface on the liquid crystal layer 20 side, and then, as needed, it is bonded to the first substrate 10 via an optical spacer PS, and the gap is filled with a liquid crystal material, thereby obtaining the liquid crystal panel 1X. According to the liquid crystal panel 1X of this example, even if the width W1 of the first light shielding layer BMa is about 3 μm, the seam between adjacent colors can be shielded, and the mixing of adjacent colors observed from an oblique direction can be fully suppressed. In addition, the transmitted light around the second contact hole CH2 can also be fully shielded by the second light shielding layer BMb. Therefore, it is possible to realize an ultra-high-resolution liquid crystal panel with high transmittance and high color purity without quality degradation due to lamination deviation.

[0091] (Example 2) The liquid crystal panel of this example corresponds to the liquid crystal panel of the above-mentioned Embodiment 2 (see Figure 1 , Figure 2 , Figure 8 and Fig. 9 ). The liquid crystal panel 1X of this example is substantially the same as the liquid crystal panel of Example 1, except that a photo spacer PS is provided between the first substrate 10 and the second substrate 30, the photo spacer PS overlaps the second light shielding layer BMb, the width W3 of the photo spacer PS is greater than the width W2 of the second light shielding layer BMb, and the first substrate 10 further includes a metal layer 140 at a position overlapping the photo spacer PS. According to the liquid crystal panel 1X of this example, the same effect as that of Example 1 can also be achieved.

[0092] (Example 3) The liquid crystal panel of this example corresponds to the liquid crystal panel of the above-mentioned Embodiment 3 (see Figures 1 to 3 as well as Figures 10 to 12 ). In Example 1, an example in which the first light shielding layer BMa is made of a metal material is described. However, the reflective properties of metal materials are very high. Therefore, in order to further improve the display quality of the liquid crystal panel, in this example, the first light shielding layer BMa is set to a multilayer structure including a metal layer, thereby achieving low reflection based on multilayer film interference. In this example, since the first light shielding layer BMa can simultaneously achieve light shielding and low reflection of transmitted light, the liquid crystal panel 1X of this example has better display quality than the liquid crystal panel of Example 1.

[0093] (Example 4) The liquid crystal panel of this example corresponds to the liquid crystal panel of the fourth embodiment described above (see Figures 1 to 3 as well as Figures 14 to 16 ). In Example 3, the first light shielding layer BMa is set to a multilayer structure including a metal layer, thereby reducing the reflectivity of the metal itself due to the interference of the multilayer film. However, in this example, low reflection is achieved by introducing a third light shielding layer BMb2 at a position two-dimensionally overlapping with the first light shielding layer BMa on the side of the opposing substrate (second substrate) 30. The liquid crystal panel 1X of this example can minimize the reflection of the first light shielding layer BMa on the side of the first substrate 10 without reducing the transmission characteristics, so the display quality is better than that of the liquid crystal panel of Example 1.

[0094] The various aspects of the present invention described above can be appropriately combined within the scope not departing from the gist of the present invention. Description of Reference Numerals

[0095] 1: Liquid crystal display device 1L, 1LA, 1LB, 2L, 3L: Light 1R, 1X: LCD panel 10, 30: substrate 20: Liquid crystal layer 41, 42: Metal layer 51, 52: Insulation layer 100, 300: Support base plate 110: Switching element 121, 122, 123, 124: Electrodes 130, 330: Insulating film or planarizing film 140: Metal layer AA: Display unit BL: Backlight BM, BMa, BMb, BMb1, BMb2: Light shielding layer CF: Color filter layer CH1, CH2: contact holes GD: Gate Driver GL: Gate wiring PS: Columnar spacer (light spacer) Px, Px1, Px2: pixels SL: Source wiring.

Claims

1. A liquid crystal panel, comprising: A first substrate having a plurality of pixels arranged in a matrix; a second substrate, which is opposite to the first substrate; as well as a liquid crystal layer located between the first substrate and the second substrate, The liquid crystal panel is characterized in that: The first substrate includes a supporting substrate, a plurality of source wirings, a plurality of gate wirings, and a plurality of switching elements, wherein the plurality of gate wirings are substantially orthogonal to the source wirings, and the plurality of switching elements are arranged at intersections of the source wirings and the gate wirings. Each pixel is defined by two adjacent gate wirings and two adjacent source wirings. Each pixel has a pixel electrode and a color filter layer, A first light shielding layer is provided between two adjacent color filter layers. The second substrate includes a supporting substrate and a second light shielding layer, The first light-shielding layer and the second light-shielding layer are arranged in directions orthogonal to each other.

2. The liquid crystal panel according to claim 1, characterized in that: The first light-shielding layer overlaps with one of the gate wiring and the source wiring, and the second light-shielding layer overlaps with the other of the gate wiring and the source wiring.

3. The liquid crystal panel according to claim 1, characterized in that: The first light shielding layer overlaps with the source wiring, and the second light shielding layer overlaps with the gate wiring.

4. The liquid crystal panel according to claim 1, characterized in that: The first light shielding layer is made of metal material. The second light shielding layer is made of resin material.

5. The liquid crystal panel according to claim 4, characterized in that: The first light shielding layer has a multi-layer structure including two or more metal layers arranged with an insulating layer interposed therebetween.

6. The liquid crystal panel according to claim 3, characterized in that: The width of the second light shielding layer is less than or equal to the width of the gate wiring.

7. The liquid crystal panel according to claim 1, characterized in that: The first substrate further includes a common electrode.

8. The liquid crystal panel according to claim 7, characterized in that: The first light shielding layer is made of a metal material and is configured to contact the common electrode.

9. The liquid crystal panel according to claim 1, characterized in that: The first substrate further includes a first horizontal alignment film, The first horizontal alignment film is configured such that one surface of the first horizontal alignment film contacts the liquid crystal layer and the other surface of the first horizontal alignment film contacts the first light shielding layer. The second substrate further includes a second horizontal alignment film, and the second horizontal alignment film is in contact with the liquid crystal layer.

10. The liquid crystal panel according to claim 1, characterized in that: Each pixel also has a contact hole, and the contact hole is arranged in the color filter layer. The switching element is electrically connected to the pixel electrode via the contact hole. The second light shielding layer overlaps with the contact hole.

11. The liquid crystal panel according to claim 1, characterized in that: At least one of the plurality of pixels further has a columnar spacer, The columnar spacer overlaps with the second light shielding layer, The width of the columnar spacer is greater than the width of the second light shielding layer.

12. The liquid crystal panel according to claim 1, characterized in that: The second substrate further includes a third light shielding layer at a position overlapping with the first light shielding layer.

13. The liquid crystal panel according to claim 12, characterized in that: The first light shielding layer is made of metal material. The third light shielding layer is made of resin material.

14. The liquid crystal panel according to claim 12, characterized in that: The width of the third light shielding layer is less than the width of the first light shielding layer.

15. A liquid crystal display device, characterized in that: A liquid crystal panel according to any one of claims 1 to 14.

16. A head mounted display device, characterized in that: A liquid crystal panel according to any one of claims 1 to 14.

Images