Color film substrate, display panel and spliced display device

Abstract

The application provides a color film substrate, a display panel and a spliced display device. The color film substrate comprises a substrate and a plurality of pixel units arranged on the substrate in an array. The pixel unit comprises a plurality of sub-pixels. The sub-pixels comprise color sub-pixels and white sub-pixels. The white sub-pixels are located on the side of the color sub-pixels close to the substrate. The orthographic projection of the white sub-pixels on the substrate covers the orthographic projection of the color sub-pixels on the substrate. Therefore, the color film substrate has good color mixing effect and high light transmittance. By applying the color film substrate provided in the application to the display panel, the brightness and resolution of the display panel can be improved, the image graininess can be effectively reduced, and the display effect can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a color filter substrate, a display panel, and a splicing display device. Background Technology

[0002] Traditional liquid crystal displays (LCDs) have the advantages of low cost and high resolution. Therefore, LCDs can be used for outdoor displays. Specifically, multiple LCD panels can be spliced ​​together to achieve large-screen displays.

[0003] A pixel in an LCD monitor is typically composed of three sub-pixels corresponding to three basic color information, such as red, green, and blue sub-pixels. That is, an LCD monitor uses an independent sub-pixel structure, with the three sub-pixels arranged side by side and emitting light at different brightness levels to mix into the desired color. Because the human eye is not as sensitive to color and brightness as the human eye, when the pixels are small enough, the display screen is prone to appearing grainy when viewed at close range, which affects the image quality and reduces the display quality. Summary of the Invention

[0004] This application provides a color filter substrate, a display panel, and a splicing display device to alleviate the shortcomings of related technologies.

[0005] To achieve the above functions, the technical solutions provided in this application are as follows:

[0006] This application provides a color filter substrate, including a substrate and a plurality of pixel units arrayed on the substrate, wherein the pixel units include a plurality of sub-pixels;

[0007] The sub-pixel includes a color sub-pixel and a white sub-pixel. The white sub-pixel is located on the side of the color sub-pixel closer to the substrate, and the orthographic projection of the white sub-pixel on the substrate covers the orthographic projection of the color sub-pixel on the substrate.

[0008] In the color filter substrate provided in the embodiments of this application, the color filter substrate includes a first black matrix, the first black matrix includes a plurality of first openings, and one first opening corresponds to one pixel unit;

[0009] In the pixel unit, the white sub-pixel covers the colored sub-pixel and abuts against the sidewall of the first opening.

[0010] In the color filter substrate provided in this application embodiment, the thickness of the first black matrix is ​​greater than or equal to the thickness of the pixel unit in the direction perpendicular to the substrate.

[0011] In the color filter substrate provided in the embodiments of this application, the color filter substrate further includes a second black matrix, the second black matrix is ​​disposed at an interval from the first black matrix, the second black matrix includes a plurality of second openings, and one second opening corresponds to one color sub-pixel;

[0012] The orthographic projection of the white sub-pixel onto the substrate overlaps the orthographic projection of the second black matrix onto the substrate.

[0013] In the color filter substrate provided in this application embodiment, in the direction perpendicular to the substrate, the thickness of the second black matrix is ​​greater than or equal to the thickness of the color sub-pixel, and less than the thickness of the pixel unit.

[0014] In the color filter substrate provided in the embodiments of this application, the color sub-pixel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the colors of the first sub-pixel, the second sub-pixel, and the third sub-pixel are all different.

[0015] The second black matrix includes a first sub-aperture, a second sub-aperture, and a third sub-aperture. The first sub-aperture corresponds to the setting of the first sub-pixel, the second sub-aperture corresponds to the setting of the second sub-pixel, and the third sub-aperture corresponds to the setting of the third sub-pixel.

[0016] In the color filter substrate provided in the embodiments of this application, the first sub-pixel is formed by a blue color resist, the second sub-pixel is formed by a green color resist, the third sub-pixel is formed by a red color resist, and the white sub-pixel is formed by a white color resist or a transparent color resist.

[0017] In the color filter substrate provided in this application embodiment, the white sub-pixel is in direct contact with the color sub-pixel.

[0018] This application provides a display panel, including any of the above-described color filter substrates, a cell-mount substrate disposed opposite to the color filter substrate, a liquid crystal layer sandwiched between the color filter substrate and the cell-mount substrate, and a circuit board bonded to the cell-mount substrate.

[0019] The white sub-pixel is located on the side of the color sub-pixel away from the substrate, and the substrate is located on the side of the white sub-pixel away from the color sub-pixel.

[0020] This application provides a splicing display device, including a plurality of splicing units arranged together; each splicing unit includes any of the display panels described above.

[0021] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a color filter substrate, a display panel, and a splicing display device. The color filter substrate includes a substrate and a plurality of pixel units arrayed on the substrate. The pixel unit includes a plurality of sub-pixels, and the sub-pixels include color sub-pixels and white sub-pixels. The white sub-pixels are located on the side of the color sub-pixels closer to the substrate, and the orthographic projection of the white sub-pixels on the substrate covers the orthographic projection of the color sub-pixels on the substrate. This results in the color filter substrate having a good color mixing effect and high light transmittance. By applying the color filter substrate provided in the embodiments of this application to the display panel, the brightness and resolution of the display panel can be improved, thereby effectively reducing image graininess and improving the display effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the color filter substrate provided in the embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the structure of a pixel unit provided in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the structure of the display panel provided in an embodiment of this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] This application provides a color filter substrate, a display panel, and a splicing display device. These will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0031] Please see Figures 1-3This embodiment provides a color filter substrate 11, a display panel 1, and a splicing display device. The color filter substrate 10 includes a substrate 11 and a plurality of pixel units 12 arrayed on the substrate 11. The pixel unit 12 includes a plurality of sub-pixels 121. The sub-pixels 121 include a color sub-pixel 121A and a white sub-pixel 121B. The white sub-pixel 121B is located on the side of the color sub-pixel 121A closer to the substrate 11, and the orthographic projection of the white sub-pixel 121B on the substrate 11 covers the orthographic projection of the color sub-pixel 121A on the substrate 11.

[0032] It should be noted that currently, pixels in LCD monitors are typically composed of three sub-pixels corresponding to three basic color information, such as red, green, and blue sub-pixels. That is, LCD monitors typically use an independent sub-pixel structure, with the three sub-pixels arranged side by side and emitting light at different brightness levels to mix into the desired color. Because the human eye has different sensitivities to color and brightness, when the pixels are small enough, the display screen can easily appear grainy when viewed at close range, thus affecting image quality and reducing display quality.

[0033] It is understood that in this embodiment, by setting the pixel unit to include multiple sub-pixels, the sub-pixels include color sub-pixels and white sub-pixels, the white sub-pixels are located on the side of the color sub-pixels closer to the substrate, and the orthographic projection of the white sub-pixels on the substrate covers the orthographic projection of the color sub-pixels on the substrate, thereby giving the color filter substrate a good light mixing effect and high light transmittance. By applying the color filter substrate provided in this embodiment to a display panel, the brightness and resolution of the display panel can be improved, interference phenomena such as moiré patterns can be reduced, and thus image graininess can be effectively reduced, improving the display effect.

[0034] In one embodiment, please refer to Figure 1 and Figure 2 ;in, Figure 1 This is a schematic diagram of the structure of the color filter substrate provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of a pixel unit provided in an embodiment of this application.

[0035] This application provides a color filter substrate 10, which includes a substrate 11 and a plurality of pixel units 12 arrayed on the substrate 11.

[0036] The substrate 11 may include a flexible substrate or a rigid substrate; specifically, when the substrate 11 includes a flexible substrate, the material of the flexible substrate 11 may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane-based resin, cellulose resin, siloxane resin, polyimide-based resin, and polyamide-based resin; when the substrate includes a rigid substrate, the material of the rigid substrate may include one of metal or glass; wherein, the material of the substrate 11 may be selected according to the actual situation, and this embodiment does not impose specific limitations on it.

[0037] In one embodiment, the pixel unit 12 includes a plurality of sub-pixels 121; the sub-pixels 121 include a colored sub-pixel 121A and a white sub-pixel 121B.

[0038] Further, in this embodiment, the color sub-pixel 121A includes a first sub-pixel 121A1, a second sub-pixel 121A2, and a third sub-pixel 121A3, and the colors of the first sub-pixel 121A1, the second sub-pixel 121A2, and the third sub-pixel 121A3 are all different; wherein, the color of the first sub-pixel 121A1 includes, but is not limited to, one of red, green, and blue; the color of the second sub-pixel 121A2 includes, but is not limited to, one of red, green, and blue; and the color of the third sub-pixel 121A3 includes, but is not limited to, one of red, green, and blue. Specifically, this embodiment uses the example of the first sub-pixel 121A1 being blue, the second sub-pixel 121A2 being green, and the third sub-pixel 121A3 being red to illustrate the technical solution of this application.

[0039] The materials of the first sub-pixel 121A1, the second sub-pixel 121A2, and the third sub-pixel 121A3 include, but are not limited to, transparent photosensitive materials such as PS (Photo Spacer) color resist, overcoat resin (OC), and polymer film on array (PFA), or other photosensitive materials such as RGB photoresist materials; preferably, the first sub-pixel 121A1 is formed of blue color resist, the second sub-pixel 121A2 is formed of green color resist, the third sub-pixel 121A3 is formed of red color resist, and the material of the white sub-pixel 121B includes, but is not limited to, white color resist or transparent color resist.

[0040] Specifically, in this embodiment, the white sub-pixel 121B is located on the side of the color sub-pixel 121A closer to the substrate 11, and the orthographic projection of the white sub-pixel 121B on the substrate 11 covers the orthographic projection of the color sub-pixel 121A on the substrate 11. When the color filter substrate 10 is applied in a liquid crystal display, the white sub-pixel 121B is disposed in the direction of light emission from the color sub-pixel 121A. The white sub-pixel 121B enables more light to pass through the color filter substrate 10 and reach the human eye, thereby improving the brightness and resolution of the liquid crystal display. When the human eye views the display screen at close range, the displayed image has little or no graininess, thus improving the display effect. Preferably, in one embodiment, the white sub-pixel 121B is in direct contact with the color sub-pixel 121A, further enhancing the light mixing effect of the color filter substrate 10.

[0041] In one embodiment, please refer to Figure 2 As shown, the color filter substrate 10 includes a first black matrix 13, which includes a plurality of first openings 13A, each first opening 13A corresponding to a pixel unit 12; wherein, in the pixel unit 12, the white sub-pixel 121B covers the color sub-pixel 121A and abuts against the sidewall of the first opening 13A; specifically, in the direction perpendicular to the substrate 11, the thickness of the first black matrix 13 is greater than or equal to the thickness of the pixel unit 12; preferably, the thickness of the first black matrix 13 is greater than the thickness of the pixel unit 12.

[0042] It should be noted that in the prior art, the overlapping of two adjacent color resists will produce a horn-like protrusion. After the cell assembly process, the horn will cause the film surface of the color filter substrate to be uneven, thereby causing abnormal liquid crystal deflection and resulting in abnormal image display. It can be understood that this embodiment can improve the horn problem at the intersection of color resists and black matrix on the color filter substrate in the prior art by setting the thickness of the first black matrix to be greater than or equal to the thickness of the pixel unit, so as to improve the liquid crystal alignment effect at the edge of the sub-pixel and thus improve the quality of the liquid crystal display product.

[0043] Meanwhile, in this embodiment, by setting the white sub-pixel 121B in the pixel unit 12, covering the color sub-pixel 121A and abutting against the sidewall of the first opening 13A, that is, the white sub-pixel 121B covers the corresponding first opening 13A, thereby further improving the light mixing effect of the pixel unit 12 and improving the light transmittance of the pixel unit 12; and, in this embodiment, the white sub-pixel 121B can be directly deposited in the corresponding first opening 13A, making the fabrication of the color filter substrate 10 simple and easy to operate.

[0044] Further, in one embodiment, please refer to Figure 2 As shown, the color filter substrate 10 further includes a second black matrix 14, which is spaced apart from the first black matrix 13. The second black matrix 14 includes a plurality of second openings 14A, and each second opening 14A corresponds to one of the color sub-pixels 121A. The orthographic projection of the white sub-pixel 121B on the substrate 11 covers the orthographic projection of the second black matrix 14 on the substrate 11.

[0045] Specifically, in the second black matrix 14, the second opening 14A includes a first sub-opening 14A1, and the color filter substrate 10 also includes a second sub-opening 14A2 and a third sub-opening 14A3. The second sub-opening 14A2 is located between the first black matrix 13 and the second black matrix 14, and the third sub-opening 14A3 is located between the first black matrix 13 and the second black matrix 14.

[0046] Wherein, the first sub-opening 14A1 is set to correspond to the second sub-pixel 121A2, the second sub-opening 14A2 is set to correspond to the first sub-pixel 121A1, and the third sub-opening 14A3 is set to correspond to the third sub-pixel 121A3; wherein, the thickness of the second black matrix 14 is greater than or equal to the thickness of the color sub-pixel 121A, and less than the thickness of the pixel unit 12; preferably, the thickness of the second black matrix 14 is equal to the thickness of the color sub-pixel 121A.

[0047] It is understood that by setting the thickness of the second black matrix 14 to be equal to that of the color sub-pixel 121A, the white sub-pixel 121B covering the color sub-pixel 121A will not produce a step difference, thus avoiding the phenomenon of bulging or collapsing of the corresponding white sub-pixel 121B during the formation process, effectively improving the surface flatness of the white sub-pixel 121B, and further enhancing the light mixing effect of the color filter substrate 10.

[0048] Meanwhile, in this embodiment, by setting one first opening 13A corresponding to one pixel unit 12, the white sub-pixel 121B covers the color sub-pixel 121A and abuts against the sidewall of the first opening 13A. That is, the white sub-pixel 121B does not have a black matrix structure, thereby reducing the area of ​​the black matrix in the color filter substrate 10. As a result, when the color filter substrate 10 is applied to a liquid crystal display, the display brightness can be increased and the image quality of the displayed picture can be improved. Furthermore, by reducing the absorption of light by the black matrix, the light-emitting components in the liquid crystal display can meet the imaging requirements of the display with a lower light intensity, thereby reducing the power consumption of the liquid crystal display.

[0049] Please combine Figure 1 , Figure 2 and Figure 3 ;in, Figure 3 This is a schematic diagram of the structure of the display panel provided in an embodiment of this application.

[0050] This embodiment provides a display panel 1, which includes but is not a liquid crystal display (LCD) panel. The display panel 1 includes a color filter substrate 10 as described in any of the above embodiments, a cell-mount substrate 20 disposed opposite to the color filter substrate 10, a liquid crystal layer 30 sandwiched between the color filter substrate 10 and the cell-mount substrate 20, and a circuit board 40 bonded to the cell-mount substrate 20. The white sub-pixel 121B is located on the side of the color sub-pixel 121A away from the cell-mount substrate 20, and the substrate 11 is located on the side of the white sub-pixel 121B away from the color sub-pixel 121A.

[0051] It is understood that the color filter substrate 10 has been described in detail in the above embodiments and will not be repeated here; the cell-mount substrate 20 includes, but is not limited to, the array substrate 11, which includes, but is not limited to, conventional film layers such as the second substrate, thin film transistor layer, pixel electrode layer, planarization layer and common electrode layer, which will not be described in detail in this embodiment; wherein, the edges of the cell-mount substrate 20 and the color filter substrate 10 are aligned, and the side of the color filter substrate 10 away from the cell-mount substrate 20 is the display surface.

[0052] Specifically, the cell substrate 20 includes a first region 20A and a second region 20B adjacent to the first region 20A. The cell substrate 20 includes an array layer (not marked in the figure). The color filter substrate 10 is disposed corresponding to the first region 20A. The circuit board 40 is bonded to the array layer in the second region 20B. The circuit board 40 is located on the side of the array layer closer to the liquid crystal layer 30. The circuit board 40 includes, but is not limited to, a printed circuit board (PCB) or a flexible printed circuit (FPC). Preferably, the circuit board 40 is a printed circuit board, and the circuit board 40 is electrically connected to the cell substrate 20 through the flip-chip film 50.

[0053] This application embodiment also provides a splicing display device, which includes a plurality of splicing units arranged together; each splicing unit includes a display panel 1 as described in any of the above embodiments, and a backlight module corresponding to the display panel.

[0054] Specifically, in one embodiment, the display panel includes a cell substrate 20, a liquid crystal layer 30, and a color filter substrate 10 stacked together. The color filter substrate 10 includes a color sub-pixel 121A, a white sub-pixel 121B, and a substrate 11 stacked together. That is, the light emitted by the backlight module passes sequentially through the cell substrate 20, the liquid crystal layer 30, the color sub-pixel 121A, the white sub-pixel 121B, and the substrate 11.

[0055] In another embodiment, the display panel includes a cell substrate 20, a liquid crystal layer 30, and a color filter substrate 10 stacked together. The color filter substrate 10 includes a white sub-pixel 121B, a color sub-pixel 121A, and a substrate 11 stacked together. That is, the light emitted by the backlight module passes sequentially through the cell substrate 20, the liquid crystal layer 30, the white sub-pixel 121B, the color sub-pixel 121A, and the substrate 11.

[0056] It should be noted that when the light emitted by the backlight module passes sequentially through the cell substrate 20, the liquid crystal layer 30, the color sub-pixel 121A, the white sub-pixel 121B, and the substrate 11, since one first opening 13A corresponds to one pixel unit 12 in the color filter substrate 10, and the white sub-pixel 121B covers the color sub-pixel 121A and abuts against the sidewall of the first opening 13A, that is, the white sub-pixel 121B does not have a black matrix structure. When the color filter substrate 10 is applied to a liquid crystal display, it can increase the display brightness and improve the image quality of the displayed picture; and reduce the absorption of light by the black matrix, so that the light-emitting components in the liquid crystal display can meet the imaging requirements of the display with a lower light intensity, thereby reducing the power consumption of the liquid crystal display.

[0057] When the light emitted by the backlight module passes sequentially through the substrate 20, the liquid crystal layer 30, the white sub-pixel 121B, the color sub-pixel 121A, and the substrate 11, since the color sub-pixel 121A is located on the light-emitting side of the white sub-pixel 121B, and adjacent color sub-pixels 121A are spaced apart by a second black matrix 14, when the human eye views the display screen at close range, the presence of the second black matrix 14 causes the displayed image to have a grainy appearance, thus affecting the display effect.

[0058] Continuing from the above, preferably, the light emitted by the backlight module passes sequentially through the cell substrate 20, the liquid crystal layer 30, the color sub-pixel 121A, the white sub-pixel 121B, and the substrate 11, thereby giving the color filter substrate 10 a good color mixing effect and high light transmittance, which can improve the brightness and resolution of the splicing display device, thereby effectively reducing image graininess and improving the display effect.

[0059] Furthermore, in specific applications, the splicing display device can be the display screen of devices such as smartphones, tablets, laptops, smart bracelets, smartwatches, smart glasses, smart helmets, desktop computers, smart TVs, or digital cameras, and can even be applied to electronic devices with flexible displays.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] The foregoing has provided a detailed description of a color filter substrate, a display panel, and a splicing display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A color filter substrate, characterized in that, The system includes a substrate, a first black matrix, a second black matrix, and a plurality of pixel units arrayed on the substrate, wherein each pixel unit includes a plurality of sub-pixels; the first black matrix includes a plurality of first openings, with one first opening corresponding to one pixel unit; the second black matrix is ​​spaced apart from the first black matrix, and the second black matrix includes a plurality of second openings. The sub-pixel includes a color sub-pixel and a white sub-pixel. The white sub-pixel is formed by a white color resist and is located on the side of the color sub-pixel closest to the substrate. The orthographic projection of the white sub-pixel on the substrate overlaps the orthographic projection of the color sub-pixel on the substrate. The white sub-pixel is suitable for mixing light from the color sub-pixel. A second opening is provided corresponding to a color sub-pixel. In the pixel unit, the white sub-pixel covers the color sub-pixel and abuts against the sidewall of the first opening. The orthographic projection of the white sub-pixel on the substrate overlaps the orthographic projection of the second black matrix on the substrate.

2. The color filter substrate according to claim 1, characterized in that, In a direction perpendicular to the substrate, the thickness of the first black matrix is ​​greater than or equal to the thickness of the pixel unit.

3. The color filter substrate according to claim 1, characterized in that, In a direction perpendicular to the substrate, the thickness of the second black matrix is ​​greater than or equal to the thickness of the color sub-pixel, and less than the thickness of the pixel unit.

4. The color filter substrate according to claim 1, characterized in that, The color sub-pixel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the colors of the first sub-pixel, the second sub-pixel, and the third sub-pixel are all different; The second black matrix includes a first sub-aperture, a second sub-aperture, and a third sub-aperture. The first sub-aperture corresponds to the setting of the first sub-pixel, the second sub-aperture corresponds to the setting of the second sub-pixel, and the third sub-aperture corresponds to the setting of the third sub-pixel.

5. The color filter substrate according to claim 4, characterized in that, The first sub-pixel is formed by blue color resist, the second sub-pixel is formed by green color resist, and the third sub-pixel is formed by red color resist.

6. The color filter substrate according to claim 1, characterized in that, The white sub-pixel is in direct contact with the colored sub-pixel.

7. A display panel, characterized in that, Includes a color filter substrate as described in any one of claims 1-6, a cell counter substrate disposed opposite to the color filter substrate, a liquid crystal layer sandwiched between the color filter substrate and the cell counter substrate, and a circuit board bonded and connected to the cell counter substrate; The white sub-pixel is located on the side of the color sub-pixel away from the substrate, and the substrate is located on the side of the white sub-pixel away from the color sub-pixel.

8. A splicing display device, characterized in that, It includes multiple splicing units arranged together; each splicing unit includes the display panel as described in claim 7.

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