Color film substrate and display panel

Abstract

The application belongs to the technical field of photoelectricity, and provides a color film substrate and a display panel. The color film substrate comprises a substrate, and a plurality of color resistance units arranged in an array on the substrate. The plurality of color resistance units at least comprises a first color resistance unit, a second color resistance unit and a third color resistance unit. The first color resistance unit and the third color resistance unit are separately arranged on the two sides of the second color resistance unit. In the direction perpendicular to the substrate, the thickness of the first color resistance unit and the thickness of the third color resistance unit are different from the reference thickness of the second color resistance unit. The color film substrate of the application can be applied to the display panel, and can make the display panel compatible with multiple performances of transmittance, color gamut and color deviation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of optoelectronics, and particularly relates to a color film substrate and a display panel. BACKGROUND

[0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) has the characteristics of small volume, low power consumption, and no radiation, and has been more and more widely researched and applied. TFT-LCD usually has a color film substrate to realize color display.

[0003] At present, in order to improve the optical performance of TFT-LCD, such as improving color gamut, improving color cast, improving transmissibility ratio (TR), etc., the TFT-LCD usually adopts the way of changing the overall pixel design of the color film substrate to optimize a single item, which often leads to the reduction of the comprehensive performance of the TFT-LCD.

[0004] Therefore, it is urgent to provide a TFT-LCD to improve its comprehensive performance. SUMMARY

[0005] Therefore, the present application provides a color film substrate and a display panel. The color film substrate realizes the difference of Δnd between regions through the difference of film thickness of color resistance units, so that when applied to a display panel, the display panel can be compatible with multiple performances of transmissibility ratio, color gamut and color cast, significantly improve the optical performance of the display panel, and effectively improve the display quality.

[0006] A first aspect of the present application provides a color film substrate, comprising a substrate, and a plurality of color resistance units arranged in an array on the substrate, wherein the plurality of color resistance units comprises at least a first color resistance unit, a second color resistance unit and a third color resistance unit, and the first color resistance unit and the third color resistance unit are separately arranged on both sides of the second color resistance unit.

[0007] In a direction perpendicular to the substrate, the thickness of the first color resistance unit and the thickness of the third color resistance unit are different from the reference thickness.

[0008] In one embodiment, the thickness of the first color resistance unit and the thickness of the third color resistance unit are both greater than the reference thickness.

[0009] In one embodiment, the first color resistance unit comprises a plurality of first sub-color resistances of different colors, the second color resistance unit comprises a plurality of second sub-color resistances of different colors, and the third color resistance unit comprises a plurality of third sub-color resistances of different colors.

[0010] The thickness of the first sub-color resist and the thickness of the third sub-color resist of the same color are both greater than the thickness of the second sub-color resist of the same color.

[0011] In one embodiment, the thickness of the first color resist unit and the thickness of the third color resist unit are both less than the reference thickness.

[0012] In one embodiment, the first color resist unit includes a plurality of first sub-color resists of different colors, the second color resist unit includes a plurality of second sub-color resists of different colors, and the third color resist unit includes a plurality of third sub-color resists of different colors.

[0013] The thickness of the first sub-color resist and the thickness of the third sub-color resist of the same color are both less than the thickness of the second sub-color resist of the same color.

[0014] In one embodiment, the thickness of the first color resist unit is greater than the reference thickness, and the thickness of the third color resist unit is less than the reference thickness.

[0015] In one embodiment, the plurality of color resist units includes at least two first color resist units, two second color resist units, and two third color resist units, and the first color resist unit, the second color resist unit, the third color resist unit, the third color resist unit, the second color resist unit, and the first color resist unit are arranged in sequence along a direction parallel to the substrate.

[0016] In one embodiment, each color resist unit includes a plurality of sub-color resists of different colors, and the thickness of the plurality of sub-color resists of different colors in each color resist unit is at least partially different along a direction perpendicular to the substrate.

[0017] In one embodiment, the color film substrate further includes a black matrix, and the black matrix includes a plurality of black color resists, and the black color resists are arranged between adjacent color resist units and between adjacent sub-color resists.

[0018] The thickness of the black color resist is the same along a direction perpendicular to the substrate.

[0019] A second aspect of the embodiments of the present application provides a display panel, including a display substrate and the color film substrate described above, and the color film substrate is arranged on one side of the display substrate.

[0020] The first aspect of the embodiment of the present application provides the color film substrate, through the design of the thickness of the first color resistance unit adjacent to the second color resistance unit and the thickness of the third color resistance unit being different from the thickness of the second color resistance unit, when the color film substrate is applied to the display panel, the film thickness difference of the color resistance unit makes the liquid crystal cell thickness d different, so as to realize the difference of the area Δnd, and the display panel can realize the compatibility of two parameters of the transmittance, the color gamut and the color deviation, significantly improve the optical performance of the display panel, and effectively improve the display quality.

[0021] It can be understood that the beneficial effects of the second aspect can be referred to the related description in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a structure schematic diagram of a color film substrate in a related technology provided by the first embodiment of the present application;

[0024] Figure 2 is a wavelength transmittance curve of light provided by the first embodiment of the present application;

[0025] Figure 3 is a structure schematic diagram of a first color film substrate provided by the first embodiment of the present application;

[0026] Figure 4 is a structure schematic diagram of a second color film substrate provided by the first embodiment of the present application;

[0027] Figure 5 is a structure schematic diagram of a third color film substrate provided by the first embodiment of the present application;

[0028] Figure 6 is a structure schematic diagram of a fourth color film substrate provided by the first embodiment of the present application;

[0029] Figure 7 is a structure schematic diagram of a fifth color film substrate provided by the first embodiment of the present application;

[0030] Figure 8 is a structure schematic diagram of a sixth color film substrate provided by the first embodiment of the present application;

[0031] Figure 9 is a schematic diagram of a display panel provided by the second embodiment of the present application;

[0032] Figure 10 is a schematic view of another display panel provided in Embodiment Two of the present application;

[0033] Figure 11 is a schematic view of still another display panel provided in Embodiment Two of the present application.

[0034] Reference Signs:

[0035] 1 - substrate substrate, 2 - color resistance unit, 3 - black color resistance, 4 - display substrate, 5 - touch layer, 21 - first color resistance unit, 22 - second color resistance unit, 23 - third color resistance unit, 211 - first red color resistance, 212 - first green color resistance, 213 - first blue color resistance, 221 - second red color resistance, 222 - second green color resistance, 223 - second blue color resistance, 231 - third red color resistance, 232 - third green color resistance, 233 - third blue color resistance, 51 - first electrode layer, 52 - insulating layer, 53 - second electrode layer. DETAILED DESCRIPTION

[0036] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.

[0037] The terms "comprise", "comprising", "include", "including", "contain", "containing", "have", "having", "carry", "carrying", "comprised of", "comprising of", "including of", "consist of", "consisting of", "consists of", "consisting", "consist", "consists", "consist", "consisting of" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusion. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally also includes other steps or units inherent to the process, method, product or device. In addition, the terms "first", "second" and "third" and the like are used to distinguish different objects, not to describe a specific order. The term "at least one" means "one or more", and the meaning of "a plurality" is two or more (including two).

[0038] Embodiment One

[0039] In order to improve the one-sided optical performance of the conventional TFT-LCD, for example, to improve the transmittance, color gamut, color deviation, etc., the pixel design of the color film substrate is usually changed to optimize the single item, which often leads to the reduction of the comprehensive performance of the TFT-LCD.

[0040] The following explanation will be based on a vertically aligned (VA) TFT-LCD.

[0041] Compared to in-plane switching (IPS) TFT-LCDs, VA-type TFT-LCDs offer better dark-state performance and higher contrast, but their picture quality at oblique viewing angles is far inferior to that of IPS-type TFT-LCDs. Especially for single-domain VA-type TFT-LCDs, because they only exhibit one state of liquid crystal transmittance at the same viewing angle, their overall performance is poor.

[0042] To improve the overall performance of VA-type TFT-LCDs, multi-domain VA-type TFT-LCDs have been developed. The aim is to improve color shift at wide viewing angles by increasing the number of domains, i.e., increasing the number of states that allow the liquid crystal to transmit, thus achieving a display panel with high contrast and a wide viewing angle. Currently, there are pixel designs for multi-domain VA-type TFT-LCDs, including 8-domain, 4-domain, and 4-domain+viewing angle compensation algorithms. While the 4-domain pixel design can achieve approximately 30% higher transmittance than the 8-domain pixel design, its color shift at wide viewing angles is worse. The 4-domain+viewing angle compensation algorithm is based on a hash table (H / L Table) algorithm, which achieves display by setting half of the pixels to display differently from the other half. This algorithm simply sacrifices the transmittance of the display panel to improve the viewing angle.

[0043] This shows that the transmittance, color gamut, and color deviation of VA-type TFT-LCDs cannot be balanced at the same time, resulting in poor overall performance.

[0044] Figure 1 This describes the pixel design of the color filter substrate for a VA-type TFT-LCD as an example. (Reference) Figure 1 As shown, the color filter substrate includes a substrate 1 and a surface on the substrate 1 along a direction parallel to the substrate 1. Figure 1 The first color resist unit 21, the second color resist unit 22, and the third color resist unit 23, arranged sequentially in the OX direction, are perpendicular to the substrate 1. Figure 1 In the OY direction, the thickness of the first color resist unit 21, the thickness of the second color resist unit 22, and the thickness of the third color resist unit 23 are all the same.

[0045] Figure 2This is a transmittance curve of light wavelength. Taking a VA-type TFT-LCD as an example, the transmittance curves of red light (610nm), green light (550nm), and blue light (470nm) were measured and obtained respectively. λ -Δnd, where Figure 2 In the diagram, VA-R represents red light with a wavelength of 610nm, VA-G represents green light with a wavelength of 550nm, and VA-B represents blue light with a wavelength of 470nm.

[0046] Light wavelength transmittance T λ The calculation formula is: in, λ represents the azimuth angle, Δn represents the ineffective refractive index, d represents the thickness of the liquid crystal cell in the TFT-LCD, and λ represents the wavelength of the light. It should be noted that wavelength transmittance refers to the ratio of the emitted light intensity to the incident light intensity at a given wavelength; azimuth angle refers to the angle between the long axis of the liquid crystal and the absorption axis of the polarizer (POL); and ineffective refractive index refers to the difference between the effective value of the extraordinary refractive index and the ordinary refractive index under a given condition.

[0047] thus, Figure 2 The horizontal axis represents the product of Δn and d, Δnd, and the vertical axis represents the wavelength transmittance of light, in percentages (%).

[0048] As shown in the above formula for calculating wavelength transmittance, the Δnd curve of wavelength transmittance is a periodic curve. Therefore, by controlling the value of Δnd, the wavelength transmittance of the liquid crystal cell can be changed, thereby altering the transmittance of the liquid crystal cell in the visible light band. Furthermore, increasing the number of wavelength transmittance states—that is, maintaining some states while increasing or decreasing the transmittance of specific color light bands—can effectively improve color shift.

[0049] For example, after designing a VA-type TFT-LCD, due to Figure 1 The thicknesses of the first color resist unit 21, the second color resist unit 22, and the third color resist unit 23 are all the same, meaning d is the same. Therefore, in the initial design, Δnd is at the required position under normal viewing angle conditions. Figure 2 At position ③, and under a wide field of view, Δnd increases as the field of view increases. Figure 2 The wavelength transmittance curve will shift, for example, to position ②. At this time, the transmittance of the blue light band will decrease significantly, causing the proportion of blue light brightness in the displayed image to decrease, resulting in a yellowish tint to the image.

[0050] Based on the above, this application provides a color filter substrate, with reference to... Figures 3-8As shown, the color film substrate includes a substrate 1 and a plurality of color resist units 2 arranged in an array on the substrate 1, the plurality of color resist units 2 including at least a first color resist unit 21, a second color resist unit 22 and a third color resist unit 23, the first color resist unit 21 and the third color resist unit 23 being separately arranged on two sides of the second color resist unit 22; along the OY direction, the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23 are different from a reference thickness taken as the thickness of the second color resist unit 22.

[0051] The substrate 1 is not limited in type, and may, for example, be a rigid substrate such as a glass substrate, or a flexible substrate such as a polyimide (PI) substrate.

[0052] In use, the thickness of the second color resist unit 22 along a direction perpendicular to the substrate 1 may, for example, be the same as the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23. Figure 1 In the example shown in FIG. 1, the thickness of the second color resist unit 22 along a direction perpendicular to the substrate 1 is the same as the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23. Of course, the thickness of the second color resist unit 22 along a direction perpendicular to the substrate 1 may, for example, be different from the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23. Figure 1 In the example shown in FIG. 1, the thickness of the second color resist unit 22 along a direction perpendicular to the substrate 1 is the same as the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23. Of course, the thickness of the second color resist unit 22 along a direction perpendicular to the substrate 1 may, for example, be different from the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23.

[0053] It should be understood that the first color resist unit 21 and the third color resist unit 23 being separately arranged on two sides of the second color resist unit 22 may, for example, mean that the first color resist unit 21 and the third color resist unit 23 are arranged on two sides of the second color resist unit 22 along the OY direction. Figures 3-8 As shown in FIG. 1, the first color resist unit 21 is arranged on the left side of the second color resist unit 22 along the OX direction, and the third color resist unit 23 is arranged on the right side of the second color resist unit 22 along the OX direction. At this time, the first color resist unit 21 may, for example, be connected to the second color resist unit 22 or not connected to the second color resist unit 22, and the third color resist unit 23 may, for example, be connected to the second color resist unit 22 or not connected to the second color resist unit 22.

[0054] In use, the thickness of each color resist unit 2 may, for example, be different from the thickness of the other color resist units. Figures 3-8 As shown in FIG. 1, each color resist unit 2 includes a plurality of sub-color resist units, and the thickness of the plurality of sub-color resist units is at least partially different along the OY direction.

[0055] For example, the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23 may, for example, be different from the thickness of the second color resist unit 22. Figures 3-5For example, the first color resist unit 21 includes a first red color resist 211, a first green color resist 212 and a first blue color resist 213, and the thickness of the first red color resist 211 can be set to be the same as that of the first green color resist 212 and smaller than that of the first blue color resist 213 along the OY direction; the second color resist unit 22 includes a second red color resist 221, a second green color resist 222 and a second blue color resist 223, and the thickness of the second red color resist 221 can be set to be the same as that of the second green color resist 222 and smaller than that of the second blue color resist 223 along the OY direction; the third color resist unit 23 includes a third red color resist 231, a third green color resist 232 and a third blue color resist 233, and the thickness of the third red color resist 231 can be set to be the same as that of the third green color resist 232 and smaller than that of the third blue color resist 233 along the OY direction.

[0056] Of course, the thickness of the first red color resist can also be set to be smaller than that of the first green color resist, the thickness of the first green color resist can be set to be smaller than that of the first blue color resist, the thickness of the second red color resist can be set to be smaller than that of the second green color resist, the thickness of the second green color resist can be set to be smaller than that of the second blue color resist, the thickness of the third red color resist can be set to be smaller than that of the third green color resist, and the thickness of the third green color resist can be set to be smaller than that of the third blue color resist, which is not limited herein.

[0057] The color film substrate is not limited herein, and for example, the color film substrate further includes a black matrix including a plurality of black color resists, and the black color resists are arranged between adjacent color resist units and between adjacent sub color resists in each color resist unit.

[0058] The thickness of the black color resist is not limited herein, and for example, the thickness of all the black color resists along the direction perpendicular to the substrate can be the same, or the thickness of part of the black color resists along the direction perpendicular to the substrate can be the same, or the thickness of all the black color resists along the direction perpendicular to the substrate can be different. Figures 3-8 As shown in the figure, the thickness of all the black color resists 3 along the OY direction is set to be the same, which is simple and easy to implement.

[0059] The color film substrate provided by the embodiment of the present application is designed to have the thickness of the first color resist unit adjacent to the second color resist unit and the thickness of the third color resist unit different from that of the second color resist unit, that is, the film thickness of the color resist unit is different to realize the difference of Δnd between regions, and specifically, when the color film substrate is applied to a display panel, the film thickness of the color resist unit is different to make the liquid crystal cell thickness d different, so as to realize the difference of Δnd between the first color resist unit region and the second color resist unit region and the difference of Δnd between the third color resist unit region and the second color resist unit region, and the display panel can realize the compatibility of two parameters of transmittance, color gamut and color deviation, thereby effectively improving the performance of the display panel.

[0060] In one embodiment, referring to Figure 3 As shown, along the OY direction, the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23 are both greater than the thickness of the second color resist unit 22.

[0061] In applications, the relationship between the thickness of the first color resist unit and the thickness of the third color resist unit is not specifically limited, and for example, the thickness of the first color resist unit can be the same as the thickness of the third color resist unit, which is convenient for manufacturing and simple to implement; or the thickness of the first color resist unit can be different from the thickness of the third color resist unit.

[0062] Further, referring to Figure 3 As shown, the first color resist unit 21 includes a plurality of first sub-color resistors of different colors, the second color resist unit 22 includes a plurality of second sub-color resistors of different colors, and the third color resist unit 23 includes a plurality of third sub-color resistors of different colors; the thickness of the first sub-color resistor of the same color and the thickness of the third sub-color resistor are both greater than the thickness of the second sub-color resistor.

[0063] Figure 3 Taking the first color resist unit 21 including a first red color resist 211, a first green color resist 212, and a first blue color resist 213, the second color resist unit 22 including a second red color resist 221, a second green color resist 222, and a second blue color resist 223, and the third color resist unit 23 including a third red color resist 231, a third green color resist 232, and a third blue color resist 233 as an example for illustration. Referring to Figure 3 As shown, along the OY direction, the thickness of the first red color resist 211 and the thickness of the third red color resist 231 are the same and greater than the thickness of the second red color resist 221, the thickness of the first green color resist 212 and the thickness of the third green color resist 232 are the same and greater than the thickness of the second green color resist 222, and the thickness of the first blue color resist 213 and the thickness of the third blue color resist 233 are the same and greater than the thickness of the second blue color resist 223.

[0064] Further, referring to Figure 6 As shown, the plurality of color resist units includes at least two first color resist units 21, two second color resist units 22, and one third color resist unit 23, and the first color resist unit 21, the second color resist unit 22, the third color resist unit 23, the second color resist unit 22, and the first color resist unit 21 are arranged in sequence along the OX direction.

[0065] Of course, the plurality of color resist units can also include at least one first color resist unit, two second color resist units, and two third color resist units, and the first color resist unit, the second color resist unit, the third color resist unit, the second color resist unit, and the third color resist unit are arranged in sequence along the OX direction.

[0066] Of course, it can also be multiple color resist units, including at least two first color resist units, two second color resist units and two third color resist units, arranged sequentially along the OX direction.

[0067] Of course, it can also be multiple color resist units, including at least one first color resist unit, two second color resist units and three third color resist units, arranged sequentially along the OX direction.

[0068] Of course, it can also be multiple color resist units, including at least two first color resist units, two second color resist units and two third color resist units, arranged sequentially along the OX direction.

[0069] In addition, there are various other color filter substrate structures, which will not be described in detail here.

[0070] This application provides a color filter substrate, using a second color resist unit region as a reference region. The film thickness of both the first and third color resist unit regions is increased compared to the film thickness of the second color resist unit region. This increases the color gamut area of ​​the first and third color resist unit regions when the color filter substrate is applied to a display panel. Furthermore, the equivalent liquid crystal cell thickness d of the first and third color resist unit regions decreases, while Δn remains constant. Figure 2 Moving position ③ to position ① increases blue light transmittance and brightness, resulting in a slight improvement in the yellow tint of the displayed image. This means that there are two different combinations of color resist transmittance in the display panel, which can effectively improve the overall color shift problem at wide viewing angles. This allows the display panel to balance color gamut and color shift, significantly improving the optical performance of the display panel and effectively improving display quality.

[0071] In one embodiment, reference Figure 4 As shown, along the OY direction, the thickness of the first color resist unit 21 and the thickness of the third color resist unit 23 are both smaller than the thickness of the second color resist unit 22.

[0072] In application, there is no specific limitation on the relationship between the thickness of the first color resist unit and the thickness of the third color resist unit. For example, the thickness of the first color resist unit can be the same as the thickness of the third color resist unit, which is convenient to manufacture and simple to implement; or, the thickness of the first color resist unit can be different from the thickness of the third color resist unit.

[0073] Further, refer to Figure 4As shown, the first color resist unit 21 includes multiple first sub-color resists of different colors, the second color resist unit 22 includes multiple second sub-color resists of different colors, and the third color resist unit 23 includes multiple third sub-color resists of different colors; the thickness of the first sub-color resist and the thickness of the third sub-color resist of the same color are both greater than the thickness of the second sub-color resist.

[0074] Figure 4 The illustration is given using the following example: a first color resist unit 21 includes a first red color resist 211, a first green color resist 212, and a first blue color resist 213; a second color resist unit 22 includes a second red color resist 221, a second green color resist 222, and a second blue color resist 223; and a third color resist unit 23 includes a third red color resist 231, a third green color resist 232, and a third blue color resist 233. (Reference) Figure 4 As shown, along the OY direction, the thickness of the first red color resist 211 is the same as the thickness of the third red color resist 231 and less than the thickness of the second red color resist 221; the thickness of the first green color resist 212 is the same as the thickness of the third green color resist 232 and less than the thickness of the second green color resist 222; and the thickness of the first blue color resist 213 is the same as the thickness of the third blue color resist 233 and less than the thickness of the second blue color resist 223.

[0075] Furthermore, refer to Figure 7 As shown, the multiple color resist units include at least two first color resist units 21, two second color resist units 22 and one third color resist unit 23, arranged sequentially along the OX direction.

[0076] Of course, it can also be multiple color resist units, including at least one first color resist unit, two second color resist units and two third color resist units, arranged sequentially along the OX direction.

[0077] Of course, it can also be multiple color resist units, including at least two first color resist units, two second color resist units and two third color resist units, arranged sequentially along the OX direction.

[0078] Of course, it can also be multiple color resist units, including at least one first color resist unit, two second color resist units and three third color resist units, arranged sequentially along the OX direction.

[0079] Of course, the plurality of color resist units can include at least two first color resist units, two second color resist units and two third color resist units, and the first color resist units, the second color resist units, the third color resist units, the third color resist units, the second color resist units and the first color resist units are arranged in sequence along the OX direction.

[0080] In addition, there can be various structures of the color film substrate, which will not be described one by one here.

[0081] The color film substrate provided by the embodiment of the present application takes the second color resist unit region as a reference region, the film thickness of the first color resist unit region and the film thickness of the third color resist unit region are both smaller than the film thickness of the second color resist unit region, so that when the color film substrate is applied to a display panel, the color gamut of the second color resist unit region remains unchanged; and the equivalent liquid crystal cell thickness d of the first color resist unit region and the third color resist unit region increases, and Δn remains unchanged, that is, there are two different color resist transmittance combinations in the display panel, so that the wavelength transmittance curve of the light can be effectively increased to the top (when the light transmittance curve of the display panel is designed as the green wavelength transmittance not reaching the maximum value, T λ The transmittance of the display panel in the unsaturated state is improved, the display panel takes into account the transmittance and the color gamut, the optical performance of the display panel is significantly improved, and the display quality is effectively improved.

[0082] In one embodiment, referring to Figure 5 As shown in the figure, along the OY direction, the thickness of the first color resist unit 21 is greater than the thickness of the second color resist unit 22, and the thickness of the third color resist unit 23 is less than the thickness of the second color resist unit 22.

[0083] Further, referring to Figure 5 As shown in the figure, the first color resist unit 21 includes a plurality of first sub-color resistors of different colors, the second color resist unit 22 includes a plurality of second sub-color resistors of different colors, and the third color resist unit 23 includes a plurality of third sub-color resistors of different colors; the thickness of the first sub-color resistor of the same color is greater than the thickness of the second sub-color resistor, and the thickness of the third sub-color resistor of the same color is less than the thickness of the second sub-color resistor.

[0084] Figure 5 Taking the first color resist unit 21 including a first red color resistor 211, a first green color resistor 212 and a first blue color resistor 213, the second color resist unit 22 including a second red color resistor 221, a second green color resistor 222 and a second blue color resistor 223, and the third color resist unit 23 including a third red color resistor 231, a third green color resistor 232 and a third blue color resistor 233 as an example for illustration. Referring to Figure 5As shown, along the OY direction, the thickness of the first red color resist 211 is greater than the thickness of the second red color resist 221, the thickness of the first green color resist 212 is greater than the thickness of the second green color resist 222, and the thickness of the first blue color resist 213 is greater than the thickness of the second blue color resist 223; the thickness of the third red color resist 231 is less than the thickness of the second red color resist 221, the thickness of the third green color resist 232 is less than the thickness of the second green color resist 222, and the thickness of the third blue color resist 233 is less than the thickness of the second blue color resist 223.

[0085] Further, with reference to Figure 8 As shown, the plurality of color resist units 2 at least include two first color resist units 21, two second color resist units 22, and two third color resist units 23, and the first color resist units 21, the second color resist units 22, the third color resist units 23, the third color resist units 23, the second color resist units 22, and the first color resist units 21 are arranged in sequence along the OX direction. If the third color resist unit is adjacent to the first color resist unit, the overlap between the color resist unit with a larger thickness and the color resist unit with a smaller thickness is large, and the material in the color resist unit with a larger thickness may overflow into the color resist unit with a smaller thickness. Therefore, the third color resist unit is arranged adjacent to the third color resist unit, the overlap is small, and there is no problem of a higher step difference.

[0086] The embodiment of the present application provides a color film substrate, taking the second color resist unit region as a reference region, the film thickness of the first color resist unit region is increased compared with the film thickness of the second color resist unit region, and the film thickness of the third color resist unit region is reduced compared with the film thickness of the second color resist unit region. When the color film substrate is applied to a display panel, due to the film thickness difference between the first color resist unit region and the third color resist unit region, the equivalent liquid crystal cell thicknesses of the two regions are equivalent to the liquid crystal cell thickness of the second color resist unit region, that is, the transmittances of the first color resist unit region and the third color resist unit region are equivalent to the transmittance of the second color resist unit region after balancing, and the transmittance of the display panel is maintained. At the same time, due to the thickening of the film thickness of the first color resist unit region, the color gamut is increased, so that the color gamut of the display panel can be improved, the display panel takes into account the transmittance and the color gamut, and the optical performance of the display panel is significantly improved, and the display quality is effectively improved.

[0087] Embodiment two

[0088] In a second aspect, the embodiment two of the present application provides a display panel, with reference to Figures 9-11 As shown, the display panel includes a display substrate and the color film substrate provided by the embodiment one of the present application, and the color film substrate is arranged on one side of the display substrate.

[0089] In application, as an example, the color film substrate is arranged on the light-emitting side of the display substrate, at this time, along the direction perpendicular to the substrate, the color film substrate is above the entire display panel.

[0090] In an application, as another example, the display substrate can be an array substrate, and the color film substrate is arranged opposite to the array substrate.

[0091] The display panel provided by the embodiments of the present application can be compatible with two of the transmittance, the color gamut, and the color cast.

[0092] Figures 9-11 All of the display substrates are arranged on the light-emitting side of the display substrate.

[0093] Reference Figures 9-11 As shown in the figure, the display panel includes a display substrate 4, a touch layer 5, and a color film substrate, and the touch layer 5 is arranged between the display substrate 4 and the color film substrate.

[0094] In an application, the touch layer belongs to an Oncell touch structure, and the touch layer can be directly manufactured on the display substrate 4; or the display panel can further include a touch substrate, and the touch layer is arranged on the side of the touch substrate away from the display substrate.

[0095] The touch layer and the display substrate can be an integrated structure, and the touch layer can be directly coated with an Indium Tin Oxide (ITO) layer on the outside of the touch substrate of the display substrate. Of course, the touch layer can also be externally mounted on the display substrate, that is, a layer of transparent Polyethylene Terephthalate (PET) is first arranged on the outside of the touch substrate of the display substrate, and then the transparent PET is used as a base material to form an ITO layer thereon. The PET can be attached to the display substrate through Optically Clear Adhesive (OCA). The touch substrate can be a PI substrate, and no specific limitation is made thereto.

[0096] Figures 9-11 The touch layer 5 is manufactured on the display substrate through OCA glue. As shown in the figure, Figures 9-11 The touch layer 5 includes a first electrode layer 51, an insulating layer 52, and a second electrode layer 53, and the first electrode layer 51 and the second electrode layer 53 are bridged through a via (not shown) on the insulating layer 52. Figures 9-11 The first electrode layer can be a touch electrode, and the second electrode layer can be a sensing electrode; or the first electrode layer can be a sensing electrode, and the second electrode layer can be a touch electrode, and no specific limitation is made thereto.

[0097] Only the content related to the invention point is introduced here, and other structures can be obtained by referring to the related technology, which will not be described in detail here.

[0098] The above merely provides preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, and improvement made in the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A color filter substrate, characterized by, The color film substrate comprises a substrate, and a plurality of color resistance units arranged in an array on the substrate, the plurality of color resistance units comprising at least first, second and third color resistance units arranged in sequence and adjacent to each other, the first and third color resistance units being separately arranged on both sides of the second color resistance unit; each of the color resistance units comprises a plurality of sub-color resistances of different colors, the first color resistance unit comprises first red, green and blue color resistances arranged in sequence and adjacent to each other, the second color resistance unit comprises second red, green and blue color resistances arranged in sequence and adjacent to each other, and the third color resistance unit comprises third red, green and blue color resistances arranged in sequence and adjacent to each other. In a direction perpendicular to the substrate, The thickness of the first red color resistance and the thickness of the first green color resistance are both smaller than the thickness of the first blue color resistance; The thickness of the second red color resistance and the thickness of the second green color resistance are both smaller than the thickness of the second blue color resistance; The thickness of the third red color resistance and the thickness of the third green color resistance are both smaller than the thickness of the third blue color resistance; The thickness of the first red color resistance and the thickness of the third red color resistance are both greater than the thickness of the second red color resistance; The thickness of the first green color resistance and the thickness of the third green color resistance are both greater than the thickness of the second green color resistance; The thickness of the first blue color resistance and the thickness of the third blue color resistance are both greater than the thickness of the second blue color resistance.

2. The color filter substrate of claim 1, wherein, In a direction perpendicular to the substrate, The thickness of the first red color resistance and the thickness of the first green color resistance are both smaller than the thickness of the first blue color resistance; The thickness of the second red color resistance and the thickness of the second green color resistance are both smaller than the thickness of the second blue color resistance; The thickness of the third red color resistance and the thickness of the third green color resistance are both smaller than the thickness of the third blue color resistance; The thickness of the first red color resistance and the thickness of the third red color resistance are both smaller than the thickness of the second red color resistance; The thickness of the first green color resistance and the thickness of the third green color resistance are both smaller than the thickness of the second green color resistance; The thickness of the first blue color resistance and the thickness of the third blue color resistance are both smaller than the thickness of the second blue color resistance.

3. The color filter substrate of claim 1, wherein, In a direction perpendicular to the substrate, The thickness of the first red color resistance and the thickness of the first green color resistance are both smaller than the thickness of the first blue color resistance; The thickness of the second red color resistance and the thickness of the second green color resistance are both smaller than the thickness of the second blue color resistance; The thickness of the third red color resistance and the thickness of the third green color resistance are both smaller than the thickness of the third blue color resistance; The thickness of the first red color resistance is greater than the thickness of the second red color resistance, and the thickness of the third red color resistance is smaller than the thickness of the second red color resistance; The thickness of the first green color resistance is greater than the thickness of the second green color resistance, and the thickness of the third green color resistance is smaller than the thickness of the second green color resistance; The thickness of the first blue color resistance is greater than the thickness of the second blue color resistance, and the thickness of the third blue color resistance is smaller than the thickness of the second blue color resistance.

4. The color filter substrate of claim 3, wherein, The plurality of color resist units at least include two first color resist units, two second color resist units, and two third color resist units, and the first color resist units, the second color resist units, the third color resist units, the third color resist units, the second color resist units, and the first color resist units are sequentially arranged in parallel to the substrate substrate.

5. The color filter substrate according to any one of claims 1 to 4, wherein The color film substrate further comprises a black matrix, and the black matrix comprises a plurality of black color resist units, and the black color resist units are arranged between adjacent color resist units and adjacent sub-color resist units. In a direction perpendicular to the substrate substrate, the thickness of the black color resist units is the same.

6. A display panel, characterized by, The display substrate comprises a display substrate and a color film substrate as claimed in any one of claims 1-5, and the color film substrate is arranged on one side of the display substrate.

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