Liquid crystal panel
By adopting a multi-layer structure design in the spacer of the liquid crystal panel, including the laminated portion of the first protruding pattern part, the second continuous pattern part and the third protruding pattern part, the problem of easy peeling of the spacer of the high-resolution liquid crystal panel is solved, and the stability of the spacer and the high pixel opening rate are achieved.
Patent Information
- Application Number
- CN202411696343.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-22
- Filing Date
- 2024-11-25
- Publication Date
- 2025-06-24
AI Technical Summary
The spacers of the existing liquid crystal panels are easily peeled off when they are high-resolution, and the pixel opening rate is low, making it difficult to meet the needs of high-resolution display.
The spacer adopting a multi-layer structure includes a laminated portion of the first protruding pattern part, a second continuous pattern part and a third protruding pattern part. Through this structure, the spacer is more closely combined, reducing the risk of peeling, and improving the pixel opening rate.
It realizes a liquid crystal panel with a spacer that is not easy to peel off and has a high pixel opening ratio. It is suitable for high resolution such as 1000 ppi or above, and is especially suitable for head-mounted displays.
Smart Images

Figure CN120195912A_ABST
Abstract
Description
Technical Field
[0001] The following disclosure relates to a liquid crystal panel. Background Art
[0002] As a liquid crystal display device, for example, the following configuration can be cited: an active matrix substrate that uses active elements represented by thin film transistors (TFTs); a color filter substrate that includes color filters; and a liquid crystal panel that has a liquid crystal layer sandwiched between the active matrix substrate and the color filter substrate. In order to maintain the thickness of the liquid crystal layer, spacers are disposed between the active matrix substrate and the color filter substrate.
[0003] As the above spacers, photo spacers (PS) formed by photolithography have been studied, and the colored layers used in the color filters are laminated to form photo spacers (for example, Patent Documents 1 and 2).
[0004] Patent Document 1 discloses a color filter that has a plurality of columnar bodies on the colored layer and has a function of controlling the gap between the color filter and the opposing substrate, and the columnar bodies are formed by a photolithography process. As shown in (B) of Figure 1 , the columnar body 4 is formed by laminating colored layers of red (R), green (G), and blue (B) (paragraph 0010).
[0005] Patent Document 2 discloses a liquid crystal display element including: a first substrate on which a first electrode is formed on a first insulating substrate; a second substrate on which a second electrode is formed on a second insulating substrate; a liquid crystal layer in which the first substrate and the second substrate are disposed opposite to each other and sandwiched between the two substrates; a sealing portion that is formed between the two substrates and is formed in the outer peripheral portion of the substrate except for a liquid crystal injection portion for injecting the liquid crystal layer; a plurality of colored layers formed in an effective pixel region on any one of the two substrates; and a spacer formed by laminating a spacer layer formed in the same process as the colored layer on the substrate on which the colored layer is formed, wherein the spacer is disposed near the liquid crystal injection portion (see (a) and (b) of Figure 4 ).
[0006] Prior Art Documents Patent Documents Patent Document 1: Japanese Patent No. 3953588 Patent Document 2: Japanese Unexamined Patent Application Publication No. 2006-072388 Summary of the Invention Technical Problem to be Solved by the Invention In recent years, liquid crystal panels have been used as display panels for head-mounted displays (hereinafter referred to as HMDs). As a display panel for HMDs, for example, a liquid crystal panel with a high resolution of 1000 ppi or more is used. Since the transmittance of the region where spacers with a colored layer laminated thereon is reduced, as the liquid crystal panel becomes higher in resolution, downsizing of the spacers is required.
[0007] Conventionally, as disclosed in Patent Documents 1 and 2, optical spacers with a colored layer laminated thereon are used for large panels, and optical spacers with an isolated pattern are the mainstream. However, if the diameter is reduced, the optical spacers with an isolated pattern having a colored layer laminated thereon are likely to peel off. On the other hand, when the diameter of the above optical spacers is increased, although peeling is difficult, the pixel aperture ratio is reduced. Therefore, there is room for further research on spacers that can be applied to high-resolution liquid crystal panels.
[0008] The present invention has been completed in view of the above situation, and an object thereof is to provide a liquid crystal panel in which spacers are not easily peeled off and the pixel aperture ratio is high.
[0009] Technical solution for solving technical problems (1) A liquid crystal panel according to an embodiment of the present invention includes a plurality of sub-pixels arranged in a row direction and a column direction, and includes: an active matrix substrate having pixel electrodes arranged for each of the sub-pixels; a color filter substrate; and a liquid crystal layer sandwiched between the active matrix substrate and the color filter substrate. The color filter substrate has a color filter layer and a plurality of spacers protruding toward the liquid crystal layer side. The color filter layer includes at least a color filter of a first color and a color filter of a second color. The color filter of the second color is adjacent to the color filter of the first color in the row direction. The color filter of the first color includes: a first continuous pattern portion continuously arranged so as to overlap a first sub-pixel group arranged along the column direction among the plurality of sub-pixels; and a first protruding pattern portion protruding from the first continuous pattern portion in the row direction. The color filter of the second color includes a second continuous pattern portion continuously arranged so as to overlap a second sub-pixel group arranged along the column direction among the plurality of sub-pixels. The plurality of spacers include a color filter layer lamination portion, and the color filter layer lamination portion includes the first protruding pattern portion and a part of the second continuous pattern portion.
[0010] (2) Further, in one embodiment of the present invention based on the configuration of (1) above, the color filter layer further includes a color filter of a third color, and the color filter of the third color is adjacent to the color filter of the second color on the opposite side of the color filter of the first color in the row direction. The color filter of the third color includes: a third continuous pattern portion continuously arranged so as to overlap with a third sub-pixel group arranged along the column direction among the plurality of sub-pixels; and a third protruding pattern portion protruding in the row direction from the third continuous pattern portion. At least one of the plurality of spacers includes the first protruding pattern portion, a part of the second continuous pattern portion, and the third protruding pattern portion in the color filter layer stack portion.
[0011] (3) Further, in one embodiment of the present invention based on the configuration of (2) above, the maximum width of the third protruding pattern portion in the column direction is greater than the maximum width of the first protruding pattern portion in the column direction.
[0012] (4) Further, in one embodiment of the present invention based on any one of the configurations of (1) to (3) above, the color filter of the first color is either a red color filter or a green color filter.
[0013] (5) Further, in one embodiment of the present invention based on any one of the configurations of (2) to (4) above, the color filter of the first color is either a red color filter or a green color filter, the color filter of the second color is a blue color filter, and the color filter of the third color is the other of a red color filter or a green color filter.
[0014] (6) Further, in one embodiment of the present invention based on any one of the configurations of (1) to (5) above, a part of the second continuous pattern portion is arranged on the side of the color filter layer stack portion closest to the liquid crystal layer.
[0015] (7) Further, in one embodiment of the present invention based on any one of the configurations of (1) to (6) above, the color filter substrate further has a black matrix, and the black matrix includes: a plurality of openings corresponding to each of the sub-pixels; and a light-shielding portion arranged around the plurality of openings. The plurality of spacers include spacers arranged at positions overlapping with the light-shielding portion. The plurality of openings include: a plurality of first openings overlapping with the first continuous pattern portion; and a plurality of second openings overlapping with portions other than the part of the second continuous pattern portion. The plurality of second openings include second openings having an area smaller than that of the first openings.
[0016] (8) In addition, in one embodiment of the present invention, based on the configuration of any one of the above (1) to (7), the color filter substrate has an outer coating, the outer coating is disposed on the liquid crystal layer side of the color filter layer, and the thickness of the outer coating is less than the thickness of the color filter laminate portion.
[0017] (9) In addition, in one embodiment of the present invention, based on the configuration of any one of the above (1), (4), (6) to (8), a part of the first protruding pattern portion and the second continuous pattern portion are laminated on the color filter laminate portion, and the thickness of the color filter laminate portion is less than twice the thickness of the first continuous pattern portion.
[0018] (10) In addition, in one embodiment of the present invention, based on the configuration of any one of the above (2), (3) to (8), the first protruding pattern portion, a part of the second continuous pattern portion, and the third protruding pattern portion are laminated on the color filter laminate portion, and the thickness of the color filter laminate portion is less than three times the thickness of the first continuous pattern portion.
[0019] (11) In addition, in one embodiment of the present invention, based on the configuration of any one of the above (1) to (10), the maximum width of the first protruding pattern portion in the column direction is 0.5 times or more and 1.5 times or less the width of the first continuous pattern portion in the row direction.
[0020] (12) In addition, in one embodiment of the present invention, based on the configuration of any one of the above (1) to (11), the color filter layer further includes a color filter of a third color. The color filter of the third color is adjacent to the color filter of the second color on the opposite side of the color filter of the first color in the row direction. One sub-pixel overlapping with the color filter of the first color, one sub-pixel overlapping with the color filter of the second color, and one sub-pixel overlapping with the color filter of the third color constitute one pixel. The pixel density of the liquid crystal panel is 1000 ppi or more, and the plurality of spacers are arranged at a density of one or more for every 1000 pixels and one or less for every one pixel.
[0021] (13) Further, in one embodiment of the present invention, based on the configuration of any one of the above (2), (3) to (8), and (10) to (12), the plurality of spacers include a main spacer and a sub-spacer, the thickness of the sub-spacer is thinner than that of the main spacer, the color filter laminate portion included in the main spacer is laminated with the first protruding pattern portion, a part of the second continuous pattern portion, and the third protruding pattern portion, and the color filter laminate portion included in the sub-spacer is laminated with the first protruding pattern portion or the third protruding pattern portion, and a part of the second continuous pattern portion.
[0022] (14) Further, in one embodiment of the present invention, based on the configuration of the above (13), one sub-pixel overlapping with the color filter of the first color, one sub-pixel overlapping with the color filter of the second color, and one sub-pixel overlapping with the color filter of the third color constitute one pixel. For 1000 of the above pixels, the number of the sub-spacers is the same or more and 10 times or less than the number of the main spacers.
[0023] Advantageous Effects According to the present invention, a liquid crystal panel with spacers that are not easily peeled off and a high pixel aperture ratio can be provided. Description of the Drawings
[0024] Figure 1 It is a plan view of the liquid crystal panel of the embodiment.
[0025] Figure 2 is Figure 1 A cross-sectional view taken along line X1-X2 of the liquid crystal panel shown.
[0026] Figure 3 It is from the liquid crystal layer side looking at Figure 1 A plan view of the color filter substrate.
[0027] Figure 4 is Figure 3 A plan view of one color filter of the first color shown.
[0028] Figure 5 is Figure 3 A plan view of one color filter of the second color shown.
[0029] Figure 6 is Figure 3 A plan view of one color filter of the third color shown.
[0030] Figure 7 is Figure 1 A cross-sectional view taken along line X3-X4 of the liquid crystal panel shown.
[0031] Figure 8 is Figure 1 a schematic cross-sectional view at the X5-X6 line of the liquid crystal panel shown in
[0032] Figure 9 is a Figure 1 schematic plan view of an enlarged area near the spacer PS3 of the liquid crystal panel shown in
[0033] Figure 10 is to illustrate Figure 3 a schematic plan view of the first step of the manufacturing method of the color filter substrate shown in
[0034] Figure 11 is Figure 10 a schematic cross-sectional view at the X3-X4 line of
[0035] Figure 12 is Figure 10 a schematic cross-sectional view at the X5-X6 line of
[0036] Figure 13 is to illustrate Figure 3 a schematic plan view of the second step of the manufacturing method of the color filter substrate shown in
[0037] Figure 14 is Figure 13 a schematic cross-sectional view at the X3-X4 line of
[0038] Figure 15 a schematic plan view of another example of the second step of the manufacturing method of the color filter substrate
[0039] Figure 16 is Figure 13 a schematic cross-sectional view at the X5-X6 line of
[0040] Figure 17 is to illustrate Figure 3 a schematic plan view of the third step of the manufacturing method of the color filter substrate shown in
[0041] Figure 18 is Figure 17 a schematic cross-sectional view at the X3-X4 line of
[0042] Figure 19 is Figure 17 a schematic cross-sectional view at the X5-X6 line of
[0043] Figure 20 a schematic plan view of the color filter substrate of Comparative Example 1 as viewed from the liquid crystal layer side
[0044] Figure 21 is Figure 20 a schematic cross-sectional view at the X7-X8 line of Detailed implementation mode
[0045] Figure 1 It is a plan view of the liquid crystal panel of the implementation mode. Figure 2 is Figure 1 A cross-sectional view taken along the X1-X2 line of the liquid crystal panel shown. Additionally, Figure 1 It is a plan view of the liquid crystal panel 1000 observed from the color filter substrate 20 side. As Figure 1 shown, the liquid crystal panel 1000 of the implementation mode includes a plurality of sub-pixels arranged in the row direction and the column direction. For example, when the right hand direction is set as the 0° azimuth and the left hand direction is set as the 180° azimuth when observing the liquid crystal panel from the observer side, the above-mentioned row direction refers to the left-right direction (0°-180° azimuth). The above-mentioned column direction refers to the direction orthogonal to the above-mentioned row direction, for example, it refers to the up-down direction of the liquid crystal panel (90°-270° azimuth). For example, in the case of n rows and m columns, n×m sub-pixels are arranged in a matrix.
[0046] As Figure 2 shown, the liquid crystal panel 1000 includes an active matrix substrate 10, a color filter substrate 20, and a liquid crystal layer 30 sandwiched between the active matrix substrate 10 and the color filter substrate 20.
[0047] The active matrix substrate 10 has pixel electrodes 12 arranged for each sub-pixel. The active matrix substrate 10 may include a support substrate 11, and the pixel electrodes 12 may also be arranged on the support substrate 11. The support substrate 11 and the support substrate 21 described later are insulating substrates (also called insulating substrates), preferably transparent substrates, such as glass substrates, plastic substrates, etc.
[0048] Although not shown, the active matrix substrate 10, for example, has: a plurality of gate wirings (scan lines) arranged in parallel with each other; and a plurality of source wirings (signal lines) that cross the above-mentioned plurality of gate wirings and are arranged in parallel with each other. The plurality of gate wirings and the plurality of source wirings may be orthogonal. The gate wirings may be arranged in the row direction, and the source wirings may be arranged in the column direction. The above-mentioned plurality of source wirings and plurality of gate wirings are integrally formed in a matrix (lattice) so as to divide each pixel. In this specification, the smallest unit of this lattice, that is, the region surrounded by the source wiring and the gate wiring (may also include the regions in the color filter substrate 20 and the liquid crystal layer 30 that overlap with the region surrounded by the source wiring and the gate wiring in the active matrix substrate 10 when viewed from above) is called a "sub-pixel". In each sub-pixel, a TFT serving as a switching element is arranged at the intersection of the source wiring and the gate wiring. The pixel electrode 12 is electrically connected to, for example, the drain wiring of the TFT. As the semiconductor layer of the TFT, for example, amorphous silicon, polycrystalline silicon, oxide semiconductor, etc. can be cited.
[0049] As the display modes of the liquid crystal panel 1000, transverse electric field modes such as FFS (Fringe Field Switching) mode and IPS (In Plane Switching) mode can be cited; longitudinal electric field modes such as vertical alignment (VA: Vertical Alignment). The above-mentioned transverse electric field mode is a display mode in which liquid crystal molecules in the liquid crystal layer are aligned parallel to the substrate surface when no voltage is applied, and the above-mentioned longitudinal electric field mode is a display mode in which liquid crystal molecules in the liquid crystal layer are aligned perpendicular to the substrate surface when no voltage is applied. Since the liquid crystal panel of the embodiment is easy to obtain a high transmittance, a liquid crystal panel of the transverse electric field mode is preferably used, and an FFS mode is more preferably used.
[0050] When the liquid crystal panel 1000 is of the transverse electric field mode, the counter electrode is formed on the active matrix substrate 10. In the case of the FFS mode, an insulating film is disposed between the pixel electrode and the counter electrode. When the liquid crystal panel 1000 is of the longitudinal electric field mode, the counter electrode is formed on the color filter substrate 20 (for example, on the side closer to the liquid crystal layer 30 than the color filter layer 22).
[0051] The liquid crystal layer 30 contains liquid crystal molecules, and the orientation of the liquid crystal molecules changes according to the potential difference between the pixel electrode and the counter electrode, thereby controlling the light transmittance. As the above-mentioned liquid crystal molecules, a nematic liquid crystal material that exhibits nematic liquid crystal properties within a certain temperature range is preferably used. The dielectric anisotropy of the above-mentioned liquid crystal molecules can be positive or negative, but from the viewpoint of being able to accelerate the response speed, a positive dielectric anisotropy is preferably used, and from the viewpoint of being able to improve the transmittance, a negative dielectric anisotropy is preferably used.
[0052] The color filter substrate 20 may have a support substrate 21, or may be laminated in the order of the support substrate 21, the black matrix 23, and the color filter layer 22.
[0053] As Figure 1 shown, the black matrix 23 includes a plurality of openings 23a arranged for each sub-pixel and a light-shielding portion 23b disposed around the plurality of openings 23a. The black matrix 23 may also be formed in a lattice shape on the support substrate 21. As the black matrix 23, materials commonly used in the field of liquid crystal panels such as black photosensitive resin materials and metal materials can be used.
[0054] Figure 3 is a plan view of the color filter substrate viewed from the liquid crystal layer side Figure 1 In addition, in Figure 3 , the black matrix 23 is omitted. As Figure 3As shown, the color filter layer 22 includes at least a color filter 22A of a first color and a color filter 22B of a second color adjacent to the color filter 22A of the first color in the row direction. The color filter layer 22 may also include a color filter 22C of a third color adjacent to the color filter 22B of the second color on the opposite side of the color filter 22A of the first color in the row direction.
[0055] Figure 4 yes Figure 3 FIG. 1 is a plan view of a color filter of a first color. Figure 4 As shown, the color filter 22A of the first color includes: a first continuous pattern portion 22A-1, which is connected to the first sub-pixel group (1-A)x (refer to Figure 1 ) are continuously arranged in an overlapping manner; and a first protruding pattern portion 22A-2, which protrudes from the first continuous pattern portion 22A-1 in the row direction. At least one of the plurality of first color color filters 22A only needs to include the first continuous pattern portion 22A-1 and the first protruding pattern portion 22A-2, and the color filter layer 22 may also include a first color color filter 22A consisting only of the first continuous pattern portion 22A-1.
[0056] The maximum width W of the first protruding pattern portion 22A-2 in the column direction 22A-2 It can also be the width W of the first continuous pattern portion in the row direction. 22A-1 From the viewpoint of improving the adhesion of the spacer, the W 22A-2 Preferably W 22A-1 From the viewpoint of ensuring the aperture ratio and preventing the display quality of the liquid crystal panel from being reduced, the W 22A-2 Preferably W 22A-1 When the LCD panel is 1000ppi, the above W 22A-2 More preferably, it is 4.23 μm or more and 12.7 μm or less.
[0057] Figure 5 yes Figure 3 A schematic plan view of a color filter of a second color is shown. Figure 5 As shown, the color filter 22B of the second color includes a second continuous pattern portion 22B-1, which is connected to a second sub-pixel group (1-B) x (refer to Figure 1 The second color filter 22B may not include a protruding pattern portion protruding from the second continuous pattern portion 22B-1 in the row direction.
[0058] Figure 6 Yes Figure 3 is a schematic plan view of a color filter of a third color as shown. As Figure 6 shown, the color filter 22C of the third color may also include: a third continuous pattern portion 22C-1, which is continuously arranged in a manner overlapping with a third sub-pixel group (1-C)x arranged in the column direction among a plurality of sub-pixels (refer to Figure 1 ); and a third protruding pattern portion 22C-2, which protrudes from the third continuous pattern portion 22C-1 in the row direction. At least one of the plurality of color filters 22C of the third color may also include the third continuous pattern portion 22C-1 and the third protruding pattern portion 22C-2, and the color filter layer 22 may also include a color filter 22C of the third color composed only of the third continuous pattern portion 22C-1.
[0059] The first continuous pattern portion 22A-1, the second continuous pattern portion 22B-1, and the third continuous pattern portion 22C-1 are preferably continuously arranged in a manner along the source wiring of the active matrix substrate 10 and overlapping with the sub-pixel groups arranged in the column direction when the color filter substrate 20 is bonded to the active matrix substrate 10.
[0060] The maximum width W of the third protruding pattern portion 22C-2 in the column direction 22C-2 may also be 0.5 times or more and 1.5 times or less of the width W of the third continuous pattern portion 22C-1 in the row direction. When the liquid crystal panel is 1000 ppi, the above W 22C-1 is more preferably 4.23 μm or more and 12.7 μm or less. 22C-2
[0061] The width W of the first continuous pattern portion 22A-1 in the row direction 22A-1 , the width of the second continuous pattern portion 22B-1, and the width W of the third continuous pattern portion 22C-1 22C-1 are preferably 3 μm or more and 15 μm or less, and more preferably 4 μm or more and 12 μm or less. In this specification, the widths of the first, second, and third continuous pattern portions in the row direction respectively refer to the average widths of the first, second, and third continuous pattern portions in the row direction excluding the protruding pattern portions.
[0062] From the viewpoint of ensuring a good color reproduction range, the thickness of the continuous pattern portion of the color filter of each color overlapping with the opening portion is preferably 0.5 μm or more and 3 μm or less, and more preferably 1 μm or more and 2 μm or less. The thickness of the protruding pattern portion of the color filter of each color may also be the same as the thickness of the continuous pattern portion of the color filter of each color.
[0063] The color filter substrate 20 has a plurality of spacers protruding toward the liquid crystal layer 30 side. The plurality of spacers include a color filter stacked portion that includes a part of the first protruding pattern portion 22A-2 and the second continuous pattern portion 22B-1. By laminating the first protruding pattern portion 22A-2 connected to the first continuous pattern portion 22A-1 and a part of the second continuous pattern portion 22B-1 of the color filter 22B of the second color adjacent to the color filter 22A of the first color as a spacer, it is possible to make the spacer difficult to peel off. In addition, since the above-mentioned spacer is formed to overlap with the second continuous pattern portion 22B-1 of the color filter 22B of the second color, the spacer can be arranged in a space-saving manner, and the pixel aperture ratio can be improved. The above-mentioned color filter stacked portion may further include a third protruding pattern portion 22C-2 described later in addition to a part of the first protruding pattern portion 22A-2 and the second continuous pattern portion 22B-1. In this specification, when there is no particular distinction between the spacer PS2 and the spacer PS3 described later, they are simply referred to as spacers.
[0064] Figure 7 is Figure 1 a schematic cross-sectional view taken along the line X3-X4 of the liquid crystal panel shown. As Figure 7 shown, preferably, at least one of the plurality of spacers includes a first protruding pattern portion 22A-2, a part of the second continuous pattern portion 22B-1, and a third protruding pattern portion 22C-2 in the color filter stacked portion. Both the first protruding pattern portion 22A-2 and the third protruding pattern portion 22C-2 protrude toward the second continuous pattern portion 22B-1 side in a plan view, and the three layers of the first protruding pattern portion 22A-2, a part of the second continuous pattern portion 22B-1, and the third protruding pattern portion 22C-2 are laminated to form the above-mentioned color filter stacked portion. In this specification, a spacer including a color filter stacked portion in which three layers of color filters are laminated is also referred to as a spacer PS3 having a three-layer structure.
[0065] Figure 8 is Figure 1 a schematic cross-sectional view taken along the line X5-X6 of the liquid crystal panel shown. As Figure 8 shown, the spacer PS2 includes a color filter stacked portion that includes the first protruding pattern portion 22A-2 and a part of the second continuous pattern portion 22B-1. The first protruding pattern portion 22A-2 protrudes toward the second continuous pattern portion 22B-1 side in a plan view, and the two layers of the first protruding pattern portion 22A-2 and a part of the second continuous pattern portion 22B-1 are laminated to form the above-mentioned color filter stacked portion. In this specification, a spacer including a color filter stacked portion in which two layers of color filters are laminated is also referred to as a spacer PS2 having a two-layer structure.
[0066] AsFigure 7 and Figure 8 As shown in Figure 8 , it is preferable that a part of the second continuous pattern portion 22B-1 is disposed on the side of the color filter laminate portion closest to the liquid crystal layer 30 for both the spacer PS3 and the spacer PS2.
[0067] Figure 9 is to Figure 1 A plan view showing an enlarged view of the vicinity of the spacer PS3 of the liquid crystal panel shown in Figure 1 . As Figure 9 shown in Figure 9 , the plurality of spacers described above include spacers disposed at positions overlapping with the light-shielding portion 23b. In the display region where a plurality of sub-pixels are arranged, all of the plurality of spacers may also be disposed at positions overlapping with the light-shielding portion 23b.
[0068] As Figure 9 shown in Figure 9 , the plurality of openings 23a are arranged so as to overlap with the continuous pattern portions of the color filters of respective colors, and a part of the continuous pattern portion of the color filter corresponding to the color is exposed from one opening 23a. In addition, the opening areas of the three sub-pixels included in one pixel 2 may be the same or different. Specifically, as Figure 1 shown in Figure 1 , the liquid crystal panel 1000 may also include a pixel 2 including three sub-pixels having different areas of the respective openings and a pixel 2 including three sub-pixels having equal areas of the respective openings when viewed from above. Figure 9 An example in which the opening areas of the three sub-pixels included in one pixel 2 are different is shown. As Figure 9 shown in Figure 9 , the area of the second opening 23a-2 disposed in two sub-pixels adjacent in the column direction with a spacer therebetween may also be smaller than the area of the first opening 23a-1 and / or the third opening 23a-3 disposed in sub-pixels of other colors.
[0069] The plurality of openings 23a include a plurality of first openings 23a-1 overlapping with the first continuous pattern portion 22A-1 and a plurality of second openings 23a-2 overlapping with a portion other than a part included in the color filter laminate portion of the second continuous pattern portion 22B-1. As Figure 9 shown in Figure 9 , the plurality of second openings 23a-2 may also include a second opening 23a-2 having an area smaller than the area of the first opening 23a-1. Since a part of the second continuous pattern portion 22B-1 is included in the color filter laminate portion, the second opening 23a-2 disposed overlapping with the second continuous pattern portion 22B-1 is arranged so as to avoid the portion where the spacer is disposed and overlap with a portion other than a part included in the color filter laminate portion of the second continuous pattern portion 22B-1. Therefore, the area of the second opening 23a-2 can be smaller than the area of the opening (first opening 23a-1) overlapping with the continuous pattern portion of other colors.
[0070] Since the human eye has a low visual recognition of blue, it is preferred that the spacer is disposed on the second continuous pattern portion 22B-1 of blue. Therefore, the color filter of the first color including the protruding pattern portion is preferably either a red color filter or a green color filter.
[0071] In the case where the spacer has a three-layer structure, it is preferred that the color filter 22A of the first color is either a red color filter or a green color filter, the color filter 22B of the second color is a blue color filter, and the color filter 22C of the third color is the other of a red color filter or a green color filter. Since the human eye has a high visual recognition of green, from the viewpoint of ensuring the transmittance (brightness) of the panel, it is preferred that the spacer avoids the continuous pattern portion of green. In the case of forming a three-layer structure spacer, the color filters of the first color and the third color having the protruding pattern portion are preferably either of a red color filter and a green color filter.
[0072] The plurality of spacers described above may include a main spacer and a sub-spacer having a thickness thinner than that of the main spacer. The color filter laminate portion included in the main spacer is laminated with a first protruding pattern portion 22A-2, a part of the second continuous pattern portion 22B-1, and a third protruding pattern portion 22C-2. The color filter laminate portion included in the sub-spacer is a structure formed by laminating either the first protruding pattern portion 22A-2 or the third protruding pattern portion 22C-2 with a part of the second continuous pattern portion 22B-1. That is, the plurality of spacers described above may include only the three-layer structure spacer PS3 or the two-layer structure spacer PS2, or may include both the spacer PS3 and PS2.
[0073] By including a thick main spacer (spacer PS3), the thickness of the liquid crystal layer (cell thickness) is ensured, and even when subjected to external pressure, the pressure resistance for maintaining the cell pressure can be obtained. In addition, since the liquid crystal layer thermally contracts in a low-temperature environment to generate bubbles (low-temperature bubbles), sometimes a spotty display defect caused by the bubbles may occur. By including, in addition to the main spacer, a thin sub-spacer (spacer PS2), even when the liquid crystal layer has thermally contracted, the cell thickness can be maintained by the sub-spacer, and thus a balance between the above-mentioned pressure resistance and the prevention effect of low-temperature bubbles can be achieved.
[0074] For 1000 pixels, the number of the sub-spacers may be the same or more and 10 times or less than the number of the main spacers.
[0075] As Figure 9As shown, a sub-pixel 1-A overlapping with the color filter 22A of the first color, a sub-pixel 1-B overlapping with the color filter 22B of the second color, and a sub-pixel 1-C overlapping with the color filter 22C of the third color can also constitute a pixel 2. The number of pixels per inch is also referred to as ppi (pixel per inch).
[0076] Preferably, the pixel density of the liquid crystal panel 1000 is 1000 ppi or more, and the plurality of spacers can also be arranged at a density of one or more per 1000 pixels and one or less per pixel. More preferably, the plurality of spacers are arranged at a density of one or more per 100 pixels and one or less per 9 pixels. The upper limit of the pixel density is, for example, 2000 ppi. In addition, the number of the plurality of spacers is the sum of the number of the spacers PS3 and the number of the spacers PS2 in the case of including both the spacer PS3 having a three-layer structure and the spacer having a two-layer structure.
[0077] Even when applied to a high-definition liquid crystal panel with a pixel density of 1000 ppi or more, since the spacers are difficult to peel off and the pixel aperture ratio can be increased, the liquid crystal panel 1000 of the embodiment is suitable for use as a liquid crystal panel for a head-mounted display. The pixel density of the liquid crystal panel 1000 can be 1200 ppi or more, or can be 1400 ppi or more.
[0078] As Figure 2 shown, the color filter substrate 20 may also have an outer coating 24 disposed on the liquid crystal layer 30 side of the color filter layer 22. By disposing the outer coating 24, the surface of the continuous pattern portion of each color can be flattened. In addition, by disposing the outer coating 24, the thickness of the liquid crystal layer can be adjusted to be thinner than in the case of not including the outer coating 24. The outer coating 24 can be formed, for example, using a known transparent photosensitive resin or the like.
[0079] The thickness of the outer coating 24 is preferably less than the thickness of the color filter laminate portion. The thickness of the outer coating 24 is preferably 0.5 µm or more and 3 µm or less, and more preferably 1 µm or more and 2 µm or less.
[0080] In addition, the thickness of the above-described color filter laminate portion is the thickness of the laminate portion of the continuous pattern portion and the protruding pattern portion on which the color filters are laminated, and does not include the thickness of the outer coating and the alignment film. In the case of the spacer PS3 having a three-layer structure, the thickness of the color filter laminate portion refers to the thickness of the laminate portion of the first protruding pattern portion 22A-2, a part of the second continuous pattern portion 22B-1, and the third protruding pattern portion 22C-2. In the case of the spacer PS2 having a two-layer structure, the thickness of the color filter laminate portion refers to the thickness of the laminate portion of the first protruding pattern portion 22A-2 or the third protruding pattern portion 22C-2 and a part of the second continuous pattern portion 22B-1.
[0081] Hereinafter, a method for manufacturing a color filter substrate will be described. When the color filter substrate 20 has a black matrix 23, it is preferable to form the black matrix 23 on the support substrate 21 in advance, but the illustration thereof is omitted here.
[0082] Figure 10 It is Figure 3 A plan view for explaining the first step of the method for manufacturing the color filter substrate shown. As Figure 10 shown, on the support substrate 21, the color filter 22A of the first color including the first continuous pattern portion 22A-1 and the first protruding pattern portion 22A-2 is patterned.
[0083] Figure 11 It is Figure 10 A cross-sectional view taken along line X3-X4 of Figure 12 It is Figure 10 A cross-sectional view taken along line X5-X6 of Figure 11 and Figure 12 shown, the first continuous pattern portion 22A-1 and the first protruding pattern portion 22A-2 are connected, and by first forming the color filter 22A of the first color on the support substrate, the adhesion of the spacer can be improved.
[0084] Figure 13 It is for explaining Figure 3 the second step of the method for manufacturing the color filter substrate shown. In Figure 13 , the case of forming the color filter 22C of the third color following the color filter 22A of the first color is described. As Figure 13As shown, a color filter 22C of the third color is patterned on the support substrate 21 with an interval of a continuous pattern portion where one column is vacant in the row direction of the first continuous pattern portion 22A-1. When forming the spacer PS3 having a three-layer structure, the color filter 22C of the third color including the third continuous pattern portion 22C-1 and the third protruding pattern portion 22C-2 is patterned. The third protruding pattern portion 22C-2 is patterned so as to face the first protruding pattern portion 22A-2 in a plan view, that is, so as to protrude in a direction opposite to the protruding direction of the first protruding pattern portion 22A-2 in the row direction.
[0085] Figure 14 is Figure 13 a schematic cross-sectional view taken along line X3-X4 of. As Figure 14 shown, the color filter 22C of the third color is formed such that the third protruding pattern portion 22C-2 overlaps with the first protruding pattern portion 22A-2. Since the third continuous pattern portion 22C-1 and the third protruding pattern portion 22C-2 are connected, it is possible to make the spacer less likely to peel off.
[0086] If the third protruding pattern portion 22C-2 overlaps with the first protruding pattern portion 22A-2, the maximum width of the third protruding pattern portion 22C-2 in the column direction may be smaller or larger than the maximum width of the first protruding pattern portion 22A-2 in the column direction, but Figure 13 illustrates a case where the maximum width of the third protruding pattern portion 22C-2 in the column direction is about the same as the maximum width of the first protruding pattern portion 22A-2 in the column direction.
[0087] Figure 15 is a plan view for explaining another example of the second process of the method for manufacturing a color filter substrate. As Figure 15 shown, the maximum width of the third protruding pattern portion 22C-2 in the column direction is larger than the maximum width of the first protruding pattern portion 22A-2 in the column direction. By adopting such a manner, it is possible to make the spacer less likely to peel off. The third protruding pattern portion 22C-2 may also cover the first protruding pattern portion 22A-2.
[0088] Figure 16 is Figure 13 a schematic cross-sectional view taken along line X5-X6 of. As Figure 16 shown, when forming the spacer PS2 having a two-layer structure, the color filter 22C of the third color that does not include the third protruding pattern portion 22C-2 but only includes the third continuous pattern portion 22C-1 is patterned.
[0089] Figure 17 is for Figure 3 a plan view for explaining the third process of the method for manufacturing the color filter substrate shown.Figure 17 As shown, a color filter 22B of a second color including a second continuous pattern portion 22B-1 is formed between a first continuous pattern portion 22A-1 and a third continuous pattern portion 22C-1.
[0090] Figure 18 is Figure 17 a schematic cross-sectional view at the X3-X4 line of... As Figure 18 shown, a spacer PS3 having a three-layer structure of a color filter laminate portion including a first protruding pattern portion 22A-2, a third protruding pattern portion 22C-2, and a second continuous pattern portion 22B-1 laminated in sequence is formed from the side of the support substrate 21.
[0091] Figure 19 is Figure 17 a schematic cross-sectional view at the X5-X6 line of... As Figure 19 shown, a spacer PS2 having a two-layer structure including a color filter laminate portion in which a first protruding pattern portion 22A-2 and a second continuous pattern portion 22B-1 are laminated in sequence is formed from the side of the support substrate 21.
[0092] The lamination order of the color filter layers is not limited to the above method. In the case of the three-layer structure spacer PS3, the lamination order of the first protruding pattern portion 22A-2, the second continuous pattern portion 22B-1, and the third protruding pattern portion 22C-2 is not particularly limited. In addition, in the case of the two-layer structure spacer PS2, the second continuous pattern portion 22B-1 and the first protruding pattern portion 22A-2 can also be laminated in sequence from the side of the support substrate 21. On the other hand, from the viewpoint of further improving the adhesion of the spacer, it is preferable to form the color filter 22A of the first color or the color filter 22C of the third color including the continuous pattern portion and the protruding pattern portion as the first step on the support substrate (including the black matrix). Therefore, in the case of the spacer PS3, it is preferable that at least one of the first protruding pattern portion 22A-2 and the third protruding pattern portion 22C-2 is disposed closer to the support substrate 21 side than the second continuous pattern portion 22B-1. In the case of the spacer PS2, it is preferable to dispose the first protruding pattern portion 22A-2 at a position closer to the support substrate 21 side than the second continuous pattern portion 22B-1.
[0093] As a patterning method for the color filter 22A of the first color, the color filter 22B of the second color, and the color filter 22C of the third color, a method of forming by photolithography using a negative or positive photosensitive resin composition containing a coloring agent such as a pigment or a dye of the first color, the second color, or the third color can be cited.
[0094] Since the resin composition coated on the color filters of the second and third layers slightly flows from the part constituting the color filter laminate, the thickness of the color filters of the second and third layers may sometimes be slightly thinner than the thickness of the color filter layer of the first layer. Therefore, in the case of the spacer PS3 having a three-layer structure, as Figure 18 shown, the thickness T of the color filter laminate including a part of the first protruding pattern portion 22A-2, the second continuous pattern portion 22B-1, and the third protruding pattern portion 22C-2 PS3 can also be less than three times the thickness T 22A-1 of the first continuous pattern portion.
[0095] In the case of the spacer PS2 having a two-layer structure, as Figure 19 shown, the thickness T of the color filter laminate including a part of the first protruding pattern portion 22A-2 and the second continuous pattern portion 22B-1 PS2 can also be less than twice the thickness T 22A-1 of the first continuous pattern portion.
[0096] The thicknesses T PS2 、T PS3 of the spacers PS2 and PS3 can be adjusted by changing the solid content concentration and viscosity of the photosensitive resin composition for the color filters of each color.
[0097] Although not shown, alignment films may be respectively disposed on the surfaces of the active matrix substrate 10 and the color filter substrate 20 on the liquid crystal layer 30 side. The alignment films may be subjected to alignment treatments such as rubbing and photo-alignment.
[0098] By mounting a polarizing plate, a liquid crystal driver, a driving circuit, etc. on the liquid crystal panel, a liquid crystal display device can be formed. The polarizing plates are, for example, respectively attached to the surfaces of the active matrix substrate 10 and the color filter substrate 20 on the sides opposite to the liquid crystal layer 30.
[0099] [Examples] Hereinafter, examples and comparative examples are given to illustrate the effects of the present invention, but the present invention is not limited to these examples.
[0100] [Example 1] In Example 1, an active matrix driven liquid crystal panel for HMD with a resolution of about 1200ppi is manufactured. The size of one red, blue, and green sub-pixel is 7μm×21μm, and the size of one pixel consisting of three sub-pixels is 21μm×21μm. The display mode of the liquid crystal panel is FFS, and as an active matrix substrate, a substrate is prepared with TFTs formed using amorphous silicon, polycrystalline silicon, oxide semiconductors, etc., gate wiring, source wiring, pixel electrodes configured for each sub-pixel, and a common electrode configured with the above-mentioned pixel electrodes via an insulating film. No electrodes are provided on the CF substrate.
[0101] A black matrix having openings and light shielding portions is formed on a transparent substrate serving as a supporting substrate of the CF substrate. Figure 1 As shown, the black matrix is formed such that, in a predetermined sub-pixel where the spacer is arranged, the opening portion becomes smaller so that the spacer is shielded by the light shielding portion.
[0102] In Example 1, the color filter of the first color is set to a red color filter, the color filter of the second color is set to a blue color filter, and the color filter of the third color is set to a green color filter. The order of forming the red, blue, and green color filters is not particularly limited. In Example 1, the color filter of red (first color), the color filter of green (third color), and the color filter of blue (second color) are formed in this order.
[0103] As the first step, Figure 10 and Figure 11 As shown, a red color filter is formed on a supporting substrate formed with a black matrix. When the extension direction of the gate wiring is set to the row direction and the extension direction of the source wiring is set to the column direction, the red color filter includes: a color filter including only a continuous pattern portion; and a color filter including a continuous pattern portion along the extension direction of the source wiring and a protruding pattern portion protruding from the above-mentioned continuous pattern portion to the row direction. The thickness of the continuous pattern portion and the protruding pattern portion of the red color filter is 1.5μm. The maximum width of the red protruding pattern portion in the column direction is set to the same degree as the width of the red continuous pattern portion in the row direction. The red protruding pattern portion is formed at a ratio of 1 for 8 pixels.
[0104] Next, as a second step, Figure 13 and Figure 14As shown, a green color filter is formed at an interval of one column in the row direction of the red color filter. Similar to the red color filter, the green color filter includes: a color filter including a continuous pattern portion and a protruding pattern portion, and a color filter including only the continuous pattern portion. The thickness of the continuous pattern portion and the protruding pattern portion is 1.5 μm. The maximum width of the green protruding pattern portion in the column direction is set to be approximately the same as the width of the green continuous pattern portion in the row direction. Similar to the red protruding pattern portion, the green protruding pattern portion is formed at a ratio of one for every eight pixels.
[0105] Next, as the third process, as Figure 17 and Figure 18 shown, a blue color filter is formed between the red continuous pattern portion and the green continuous pattern portion. In Example 1, since a color filter laminate portion including the red protruding pattern portion and the green protruding pattern portion has already been formed at a predetermined position where the blue color filter is to be disposed, the blue color filter has only the continuous pattern portion and no protruding pattern portion. In this way, a color filter substrate having a three-layer structure of spacers PS3 at a ratio of one for every eight pixels. The thickness T PS3 of the spacer PS3 differs from the thickness of the first continuous pattern portion that does not constitute the spacer PS3 by 2.5 μm. An overcoat layer may be provided on the color filter layer as needed.
[0106] An alignment film is formed on the surfaces of the CF substrate and the active matrix substrate, and after alignment treatment, the CF substrate and the active matrix substrate are bonded in such a manner that the alignment films face each other with a nematic liquid crystal material sandwiched therebetween to fabricate a liquid crystal panel. Then, polarizing plates are attached to the surfaces of the CF substrate and the active matrix substrate on the side opposite to the liquid crystal layer, and a liquid crystal driver and a driving circuit are installed to obtain a liquid crystal display device.
[0107] (Comparative Example 1) As Comparative Example 1, a liquid crystal display device having a conventional spacer with an isolated pattern was fabricated. Figure 20 is a plan view of the color filter substrate of Comparative Example 1 observed from the liquid crystal layer side. Figure 21 is Figure 20Cross-sectional schematic view at the X7-X8 line. In Comparative Example 1, a color filter layer 2022 was fabricated that included a red color filter 22A with only the first continuous pattern portion 22A-1, a blue color filter 22B with only the second continuous pattern portion 22B-1, and a green color filter 22C with only the third continuous pattern portion 22C-1. An isolation pattern spacer PS1 was formed on the color filter layer 2022 to fabricate a color filter substrate 2020. The isolation pattern spacer PS1 was made of a transparent resin and patterned by photolithography, and the diameter of the spacer PS1 was 14 μm. Similar to Example 1, the density of the spacer PS1 was formed at a ratio of one for every eight pixels. Then, a liquid crystal display device of Comparative Example 1 was fabricated in the same manner as in Example 1 using the color filter substrate 2020.
[0108] Compared with the liquid crystal display device of Comparative Example 1, the spacer of the liquid crystal display device of Example 1 was less likely to peel off and the transmittance increased by 4%. Since the transmittance during black display remained unchanged in Example 1 and Comparative Example 1, the display contrast of the liquid crystal display device of Example 1 also increased by an amount corresponding to the increase in the above transmittance compared with Comparative Example 1.
[0109] (Example 2) In Example 2, when forming the green color filter in the above second process, as Figure 15 shown, except that the maximum width of the green protruding pattern portion in the column direction was greater than the maximum width of the red protruding pattern portion in the column direction and the green protruding pattern portion was formed to cover the red protruding pattern portion, similar to Example 1, a color filter substrate with a spacer PS3 having a three-layer structure formed at a ratio of one for every eight pixels was formed. After that, using the above color filter substrate, a liquid crystal display device of Example 2 was fabricated in the same manner as in Example 1.
[0110] Compared with the liquid crystal display device of Comparative Example 1, the spacer of the liquid crystal display device of Example 2 was less likely to peel off, the transmittance increased, and the display contrast was also high. In Example 2 at 1200 ppi, compared with Example 1, the improvement effects of the transmittance and contrast were about half, but compared with Example 1, the spacer could be further less likely to peel off, so it could be more suitably used at about 1400 ppi (sub-pixel size 6 μm × 18 μm).
[0111] (Example 3) In Example 3, a liquid crystal display device including both a spacer PS3 (main spacer) with a three-layer structure and a spacer PS2 (sub-spacer) with a two-layer structure was fabricated. In Example 3, when forming the green color filter in the above second process, as Figure 13 and Figure 16As shown, except that a part of the green color filter does not form a protruding pattern portion but only forms a continuous pattern portion, the color filter substrate is formed in the same manner as in Example 1. Thereafter, using the above color filter substrate, the liquid crystal display device of Example 3 is fabricated in the same manner as in Example 1.
[0112] The liquid crystal display device of Example 3 is equivalent to the liquid crystal display device of Example 1. Compared with Comparative Example 1, the spacer is less likely to peel off, and the transmittance and display contrast are high. Furthermore, Example 3 can achieve a balance between pressure resistance and low-temperature bubble prevention effects.
[0113] Description of Reference Numerals 1, 1-A, 1-B, 1-C: Sub-pixels; (1-A)x: First sub-pixel group; (1-B)x: Second sub-pixel group; (1-C)x: Third sub-pixel group; 2: Pixel; 10: Active matrix substrate; 11, 21: Support substrates; 12: Pixel electrode; 20, 2020: Color filter substrates; 22: Color filter layer; 22A: Color filter of the first color; 22A-1: First continuous pattern portion; 22A-2: First protruding pattern portion; 22B: Color filter of the second color; 22B-1: Second continuous pattern portion; 22C: Color filter of the third color; 22C-1: Third continuous pattern portion; 22C-2: Third protruding pattern portion; 23: Black matrix; 23a, 23a-1, 23a-2, 23a-3: Openings; 23b: Light-shielding portion; 24: Outer coating; 30: Liquid crystal layer; 1000: Liquid crystal panel; PS1, PS2, PS3: Spacers.
Claims
1. A liquid crystal panel, characterized in that: It includes a plurality of sub-pixels, which are arranged in row and column directions. And have: An active matrix substrate having pixel electrodes arranged according to each of the sub-pixels; Color filter substrate; as well as a liquid crystal layer sandwiched between the active matrix substrate and the color filter substrate, The color filter substrate includes a color filter layer and a plurality of spacers protruding toward the liquid crystal layer. The color filter layer includes at least a color filter of a first color and a color filter of a second color, wherein the color filter of the second color is adjacent to the color filter of the first color in the row direction, The color filter of the first color comprises: A first continuous pattern portion is continuously arranged in a manner overlapping with a first sub-pixel group arranged along the column direction among the plurality of sub-pixels; as well as a first protruding pattern portion protruding from the first continuous pattern portion toward the row direction, The color filter of the second color includes a second continuous pattern portion, and the second continuous pattern portion is continuously arranged in a manner overlapping with a second sub-pixel group arranged along the column direction among the plurality of sub-pixels. The plurality of spacers includes a color filter stack portion including the first protruding pattern portion and a portion of the second continuous pattern portion.
2. The liquid crystal panel according to claim 1, characterized in that: The color filter layer further includes a color filter of a third color, the color filter of the third color being adjacent to the color filter of the second color on the opposite side of the color filter of the first color in the row direction, The color filter of the third color comprises: a third continuous pattern portion continuously arranged so as to overlap with a third sub-pixel group arranged along the column direction among the plurality of sub-pixels; and a third protruding pattern portion, which protrudes from the third continuous pattern portion toward the row direction, At least one of the plurality of spacers includes the first protruding pattern portion, a portion of the second continuous pattern portion, and the third protruding pattern portion in the color filter stacked portion.
3. The liquid crystal panel according to claim 2, characterized in that: A maximum width of the third protruding pattern portion in the column direction is greater than a maximum width of the first protruding pattern portion in the column direction.
4. The liquid crystal panel according to any one of claims 1 to 3, characterized in that: The color filter of the first color is either a red color filter or a green color filter.
5. The liquid crystal panel according to claim 2 or 3, characterized in that: The color filter of the first color is either a red color filter or a green color filter, The second color filter is a blue color filter, The color filter of the third color is the other of a red color filter and a green color filter.
6. The liquid crystal panel according to any one of claims 1 to 3, characterized in that: A portion of the second continuous pattern portion is arranged on a side of the color filter stack portion closest to the liquid crystal layer.
7. The liquid crystal panel according to any one of claims 1 to 3, characterized in that: The color filter substrate further has a black matrix, The black matrix comprises: A plurality of openings, each of which is arranged corresponding to each of the sub-pixels; and a light shielding portion disposed around the plurality of openings, The plurality of spacers include a spacer disposed at a position overlapping with the light shielding portion, The plurality of openings include: a plurality of first openings, the plurality of first openings overlapping the first continuous pattern portion; and a plurality of second openings, the plurality of second openings overlapping with a portion other than the portion of the second continuous pattern portion, The plurality of second openings include a second opening having an area smaller than that of the first opening.
8. The liquid crystal panel according to any one of claims 1 to 3, characterized in that: The color filter substrate has an overcoat layer, and the overcoat layer is arranged on the liquid crystal layer side of the color filter layer. The thickness of the overcoat layer is smaller than the thickness of the color filter stacking portion.
9. The liquid crystal panel according to claim 1, characterized in that: The color filter stacking portion is stacked with the first protruding pattern portion and a portion of the second continuous pattern portion, The thickness of the color filter stacking portion is less than twice the thickness of the first continuous pattern portion.
10. The liquid crystal panel according to claim 2 or 3, characterized in that: The color filter stacking portion is stacked with the first protruding pattern portion, a portion of the second continuous pattern portion, and the third protruding pattern portion. The thickness of the color filter stacking portion is less than 3 times the thickness of the first continuous pattern portion.
11. The liquid crystal panel according to any one of claims 1 to 3, characterized in that: A maximum width of the first protruding pattern portion in the column direction is greater than or equal to 0.5 times and less than or equal to 1.5 times a width of the first continuous pattern portion in the row direction.
12. The liquid crystal panel according to claim 1 or 2, characterized in that: The color filter layer further includes a color filter of a third color, the color filter of the third color being adjacent to the color filter of the second color on the opposite side of the color filter of the first color in the row direction, One sub-pixel overlapping with the color filter of the first color, one sub-pixel overlapping with the color filter of the second color, and one sub-pixel overlapping with the color filter of the third color constitute one pixel, The pixel density of the liquid crystal panel is above 1000ppi. The plurality of spacers are arranged at a density of one or more spacers for 1000 pixels and one or less spacers for one pixel.
13. The liquid crystal panel according to claim 2 or 3, characterized in that: The plurality of spacers include a main spacer and a sub-spacer, wherein the sub-spacer is thinner than the main spacer. The color filter stacking portion included in the main spacer is stacked with the first protruding pattern portion, the part of the second continuous pattern portion, and the third protruding pattern portion. The color filter stacked portion included in the sub-spacer is stacked with the first protruding pattern portion or the third protruding pattern portion and the part of the second continuous pattern portion.
14. The liquid crystal panel according to claim 13, characterized in that: One sub-pixel overlapping with the color filter of the first color, one sub-pixel overlapping with the color filter of the second color, and one sub-pixel overlapping with the color filter of the third color constitute one pixel, For 1000 pixels, the number of the sub-spacers is equal to or greater than the number of the main spacers and is 10 times or less.
Citation Information
Patent Citations
Liquid crystal display element
JP2006072388A