Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a substrate, a color resistance layer, a black matrix layer, a protective layer and a separation pad layer which are arranged in layers. The color resistance layer comprises a plurality of color resistances arranged in contact with each other. The colors and thicknesses of the adjacent two color resistances are different. The black matrix layer comprises a plurality of sub-black matrixes arranged at intervals. One sub-black matrix corresponds to the adjacent two color resistances and is located between the adjacent two color resistances, so that the sub-black matrix fills the thickness difference between the adjacent two color resistances, thereby avoiding the problem of uneven thickness of the protective layer caused by the thickness difference between the color resistances of different colors. The protective layer comprises a plurality of first protrusions. The separation pad layer comprises a plurality of separation pad columns. One separation pad column corresponds to one first protrusion. The distance between the side of any two first protrusions away from the substrate and the substrate is the same, thereby ensuring the uniformity of the step difference between the plurality of separation pad columns and improving the display effect and product quality of the display device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] Liquid Crystal Display (LCD) has been widely used due to its advantages of thin body, power saving, no radiation and the like. The LCD includes an array substrate, a color film substrate and a liquid crystal layer between the array substrate and the color film substrate. The color film substrate close to the liquid crystal layer includes a black matrix, a color filter, an overcoating (OC) and a photo spacer (PS) and the like.

[0003] Please combine Figure 1 A structural diagram of a display panel in the related art is shown. In the related art, the display panel 1 includes an array substrate 11 and a color film substrate 12 oppositely arranged, and a liquid crystal layer (not shown in the figure) between the array substrate 11 and the color film substrate 12. The color film substrate 12 close to the liquid crystal layer includes a substrate 121, a black matrix layer 122, a plurality of color resist 123, an overcoating (OC) 124 and a plurality of photo spacers 125 (PS) and the like arranged in a stack. Since the color gamut and color point requirements of different product specifications are different, the film thicknesses of the color resist 123 of different colors in the color film substrate 12 are different, and there is a certain degree of overlay at the overlapping part of the adjacent two color resist 123 of different colors, that is, a horn-like protruding part 1231 is generated, which further affects the thickness of the overcoating 124 in different areas, resulting in poor uniformity of the step difference of the plurality of photo spacers 125 on the overcoating 124, and affecting the product specification of the liquid crystal panel. SUMMARY

[0004] Embodiments of the present application provide a display panel and a display device to alleviate the deficiencies in the related art.

[0005] To achieve the above functions, the technical solutions provided by the embodiments of the present application are as follows:

[0006] The present application provides a display panel, comprising:

[0007] a substrate;

[0008] a color resist layer arranged on one side of the substrate, the color resist layer including a plurality of color resist arranged in contact with each other, the color and thickness of adjacent two color resist being different;

[0009] A black matrix layer is disposed on a side of the color resist layer away from the substrate, and includes a plurality of sub-black matrixes arranged at intervals, one of which corresponds to and is located between two adjacent color resists;

[0010] A protective layer is disposed on a side of the black matrix layer away from the color resist layer, and includes a plurality of first protrusions, one of which corresponds to one of the sub-black matrixes;

[0011] A spacer layer is disposed on a side of the protective layer away from the black matrix layer, and includes a plurality of spacer columns, one of which corresponds to one of the first protrusions;

[0012] The distance between any two first protrusions away from the substrate and the substrate is the same.

[0013] Optionally, in an embodiment, the absolute value of the difference in distance between any two sub-black matrixes away from the substrate and the substrate is less than or equal to 30 nanometers.

[0014] Optionally, in an embodiment, the distance between any two sub-black matrixes away from the substrate and the substrate is the same.

[0015] Optionally, in an embodiment, the color resist layer includes a plurality of color resist units, one of which includes first, second, and third color resists of different colors, which are arranged in a first direction in sequence;

[0016] The black matrix layer includes a plurality of first sub-black matrixes and a plurality of second sub-black matrixes, one of the first sub-black matrixes corresponding to one of the first color resists and one of the second color resists, and one of the second sub-black matrixes corresponding to one of the second color resists and one of the third color resists;

[0017] The second color resist has a first thickness difference from the first color resist away from the substrate, the third color resist has a second thickness difference from the second color resist away from the substrate, and the second sub-black matrix has a third thickness difference from the first sub-black matrix away from the substrate, the third thickness difference being less than the second thickness difference, and the third thickness difference being less than the first thickness difference.

[0018] Optionally, in an embodiment, the black matrix layer further includes a plurality of third sub-black matrixes, one of which is located between the third color resist and the first color resist;

[0019] The third color resist is farther away from the substrate than the first color resist, and the fourth thickness difference is between the side of the third color resist farther away from the substrate and the side of the first color resist farther away from the substrate. The third sub-black matrix is farther away from the substrate than the second sub-black matrix, and the fifth thickness difference is between the side of the third sub-black matrix farther away from the substrate and the side of the second sub-black matrix farther away from the substrate. The third sub-black matrix is farther away from the substrate than the first sub-black matrix, and the sixth thickness difference is between the side of the third sub-black matrix farther away from the substrate and the side of the first sub-black matrix farther away from the substrate. The fifth thickness difference is less than the fourth thickness difference, and the sixth thickness difference is less than the fourth thickness difference.

[0020] Optionally, in an embodiment, the fifth thickness is less than the first thickness difference, and the fifth thickness is less than the second thickness difference. The sixth thickness is less than the first thickness difference, and the sixth thickness is less than the second thickness difference.

[0021] Optionally, in an embodiment, an overlap is between two adjacent color resists, and the overlap is convex on the side of the color resist farther away from the substrate.

[0022] The orthogonal projection of the sub-black matrix on the substrate covers the orthogonal projection of the overlap on the substrate, and the side of the sub-black matrix farther away from the color resist layer is a flat side.

[0023] Optionally, in an embodiment, the sub-black matrix is between two adjacent color resists, and the sub-black matrix includes a first part and a second part connected to the first part. The orthogonal projection of the first part on the substrate is located in the orthogonal projection of the color resist on the substrate, and the orthogonal projection of the second part on the substrate is located in the orthogonal projection of the color resist on the substrate.

[0024] The distance between the side of the first part farther away from the substrate and the substrate is equal to the distance between the side of the second part farther away from the substrate and the substrate.

[0025] Optionally, in an embodiment, the spacer layer includes a plurality of main spacer columns and a plurality of auxiliary spacer columns. In the direction parallel to the horizontal plane of the substrate, the thickness of the main spacer column is greater than the thickness of the auxiliary spacer column.

[0026] The distance between the side of any two main spacer columns farther away from the substrate and the substrate is the same. The distance between the side of any two auxiliary spacer columns farther away from the substrate and the substrate is the same.

[0027] Embodiments of the present application provide a display device including the display panel described above.

[0028] The embodiment of the present application has the following beneficial effects: the display panel and the display device provided by the embodiment of the present application, the display panel comprises a substrate, a color resistance layer, a black matrix layer, a protective layer and a spacer layer which are arranged in layers; the color resistance layer comprises a plurality of color resistances arranged in contact with each other, the color and thickness of adjacent two color resistances are different; the black matrix layer comprises a plurality of sub-black matrixes arranged at intervals, one sub-black matrix corresponds to adjacent two color resistances and is located between the adjacent two color resistances, so that the sub-black matrix fills the thickness difference between the adjacent two color resistances, thereby avoiding the problem of uneven thickness of the protective layer caused by the thickness difference between the color resistances of different colors, the protective layer comprises a plurality of first protrusions, one first protrusion corresponds to one sub-black matrix, the spacer layer comprises a plurality of spacer columns, one spacer column corresponds to one first protrusion, the distance between the side of any two first protrusions away from the substrate and the substrate is the same, thereby ensuring the uniformity of the step difference between the plurality of spacer columns, and the display effect and product quality of the display device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. 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.

[0030] Figure 1 It is a structural schematic diagram of the display panel in the related art.

[0031] Figure 2 It is a structural schematic diagram of the display panel provided by the embodiment of the present application.

[0032] Figure 3 It is a first structural schematic diagram of the second substrate provided by the embodiment of the present application.

[0033] Figure 4 It is a partial enlarged schematic diagram of the second substrate in the embodiment of the present application. Figure 3

[0034] Figure 5 It is a second structural schematic diagram of the second substrate provided by the embodiment of the present application.

[0035] Figure 6 It is a third structural schematic diagram of the second substrate provided by the embodiment of the present application.

[0036] Figure 7 It is a structural schematic diagram of the display device provided by the embodiment of the present application. DETAILED DESCRIPTION​

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working mode of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0038] In addition, the terms "first" and "second" are only used for description purposes, and the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0039] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", and "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The following disclosure provides many different embodiments for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0041] The embodiments of the present application provide a display panel and a display device. The following are described in detail respectively. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0042] Please refer to Figure 2 The structural schematic diagram of the display panel provided by the embodiments of the present application is shown.

[0043] In an embodiment, the display panel 2 can be a liquid crystal display panel 2 (LCD), which comprises a first substrate 21 and a second substrate 22 arranged oppositely, and a liquid crystal layer 23 between the first substrate 21 and the second substrate 22; wherein the first substrate 21 and the second substrate 22 seal to form a liquid crystal box to accommodate the liquid crystal layer 23.

[0044] The first substrate 21 can be an array substrate, which comprises a first electrode (not shown in the figure), and the second substrate 22 can be a color film substrate, which comprises a second electrode (not shown in the figure), and the liquid crystal layer 23 comprises a plurality of liquid crystal molecules; when displaying an image, the first electrode and the second electrode apply an electric field to the liquid crystal layer 23, and by controlling the twist of the liquid crystal molecules in the liquid crystal layer 23, the polarization direction of the light from the backlight module is changed, so as to control whether to allow the light to pass through the liquid crystal box after the light intensity, thereby displaying the corresponding image.

[0045] Please refer to Figure 2 and Figure 3 ; wherein, Figure 3 is a first structure diagram of the second substrate provided by the embodiments of the present application.

[0046] In an embodiment, the second substrate 22 comprises a substrate 221, a color resistance layer 222, a black matrix layer 223, a protective layer 224, and a spacer layer 225; the color resistance layer 222 is arranged on one side of the substrate 221, the black matrix layer 223 is arranged on a side of the color resistance layer 222 away from the substrate 221, the protective layer 224 is arranged on a side of the black matrix layer 223 away from the color resistance layer 222, and the spacer layer 225 is arranged on a side of the protective layer 224 away from the black matrix layer 223.

[0047] The substrate 221 can comprise one of a rigid substrate or a flexible substrate, when the substrate 221 is a rigid substrate, the material can be metal or glass, and when the substrate 221 is a flexible substrate, the material can comprise at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy-based resin, polyurethane-based resin, cellulose resin, siloxane resin, polyimide-based resin, and polyamide-based resin, which is not specifically limited in the embodiments.

[0048] The color resist layer 222 includes a plurality of color resists 2221 of different colors, including but not limited to red, green, and blue color resists. The color resists 2221 of different colors are in contact with each other, and the thicknesses of two adjacent color resists 2221 are different. The color resist layer 222 is usually arranged in a specific order to ensure that the color performance of the display panel 2 is optimal.

[0049] The black matrix layer 223 includes a plurality of sub-black matrices 2231 arranged at intervals, wherein one sub-black matrix 2231 is arranged corresponding to two adjacent color resists 2221 and is located between the two adjacent color resists 2221; wherein, the black matrix layer 223 can shield light and prevent light from crosstalk between the color resists 2221, thereby improving the display effect of the display panel 2.

[0050] The protective layer 224 is used to protect the black matrix layer 223 and the color resist layer 222. The orthographic projection of the protective layer 224 on the substrate 221 covers the orthographic projections of the black matrix layer 223 and the color resist layer 222 on the substrate 221. The protective layer 224 can be a protective coating (Over Coating, OC). The protective layer 224 can be made of a transparent polymer material to ensure that its optical properties do not affect the display effect of the display panel 2; the protective layer 224 includes a plurality of first protrusions 2241, and one first protrusion 2241 is arranged corresponding to one sub-black matrix 2231; wherein, the distance between any two first protrusions 2241 and the side of the substrate 221 away from the substrate 221 is the same.

[0051] The spacer layer 225 includes a plurality of spacer columns 2251 arranged at intervals, and one spacer column 2251 is arranged corresponding to one first protrusion 2241 ; wherein the spacer columns 2251 are used to maintain a uniform thickness of the liquid crystal layer 23 .

[0052] It can be understood that, in the embodiment, the black matrix layer 223 is arranged on the side of the color resistance layer 222 away from the substrate 221, the black matrix layer 223 comprises a plurality of sub-black matrixes 2231 arranged at intervals, one of the sub-black matrixes 2231 is arranged corresponding to and between two adjacent color resistances 2221, so that the sub-black matrix 2231 fills the thickness difference between the two adjacent color resistances 2221, and avoids the problem of uneven thickness of the protective layer 224 caused by the thickness difference between the color resistances 2221 of different colors; the protective layer 224 comprises a plurality of first protrusions 2241, one of the first protrusions 2241 is arranged corresponding to one of the sub-black matrixes 2231, and the orthogonal projection of the first protrusion 2241 on the substrate 221 covers the orthogonal projection of the sub-black matrix 2231 on the substrate 221; wherein the distance between any two first protrusions 2241 away from the substrate 221 and the substrate 221 is the same, one of the spacers 2251 is arranged corresponding to one of the first protrusions 2241, thereby ensuring the uniformity of the step difference between the plurality of spacers 2251, and improving the display effect and product quality of the display panel 2.

[0053] Please continue to refer to Figure 3 In an embodiment, the surface of any of the sub-black matrixes 2231 away from the substrate 221 is a flat surface.

[0054] It can be understood that, in combination with Figure 1 and Figure 3 It can be understood that, due to the thickness difference between the color resistances 2221 of different colors, the thickness of the protective layer 224 covering thereon may be uneven, in the embodiment, one of the sub-black matrixes 2231 is arranged corresponding to and between two adjacent color resistances 2221, and the surface of any of the sub-black matrixes 2231 away from the substrate 221 is a flat surface, so that a uniform flat surface is arranged on the side of the black matrix layer 223 away from the substrate 221, thereby avoiding the problem of uneven thickness of the black matrix layer 223 caused by the thickness difference between the color resistances 2221 of different colors.

[0055] Specifically, one of the sub black matrixes 2231 and its corresponding two adjacent color resist layers 2221, the sub black matrix 2231 includes a first part 2231A and a second part 2231B connected with the first part 2231A, the first part 2231A is located in the projection of one of the color resist layers 2221 on the substrate 221, and the second part 2231B is located in the projection of the other color resist layer 2221 on the substrate 221; wherein the distance between the first part 2231A away from the substrate 221 and the substrate 221 is equal to the distance between the second part 2231B away from the substrate 221 and the substrate 221, so that the surface of the sub black matrix 2231 away from the substrate 221 is a flat surface, and the sub black matrix 2231 can fill the thickness difference between the two adjacent color resist layers 2221.

[0056] It can be understood that, due to the contact and different thicknesses of the two adjacent color resist layers 2221, in the embodiment, the black matrix layer 223 is arranged on the side of the color resist layer 222 away from the substrate 221, and the black matrix layer 223 can fill the thickness difference by its material and design characteristics; specifically, the black matrix layer 223 has a leveling property, which helps to flatten the surface of the color resist layer 222 covered thereby, thereby filling the thickness difference between the adjacent color resist layers 222, so that the thickness difference of the color resist layer 222 is effectively adjusted, and a uniform substrate is provided for subsequent coating of the protective layer 224.

[0057] As described above, the flat surface of the sub black matrix 2231 can serve as a substrate for the protective layer 224, ensuring that the thickness of the part of the protective layer 224 corresponding to the sub black matrix 2231 is uniform, so that the surface of the first protruding part 2241 away from the substrate 221 is a flat surface, the spacer 2251 is arranged on the side of the protective layer 224 away from the black matrix layer 223, and one of the spacers 2251 corresponds to one of the first protruding parts 2241, that is, the spacer 2251 is in contact with the part of the protective layer 224 having a uniform thickness, thereby ensuring the uniformity of the step difference between the plurality of spacers 2251.

[0058] It should be noted that, in the embodiment, the colors of the two adjacent color resist layers 2221 are not specifically limited, as long as the two adjacent color resist layers 2221 are in contact and have different thicknesses, the black matrix layer 223 can be arranged on the side of the color resist layer 222 away from the substrate 221, and the black matrix layer 223 can fill the thickness difference by its material and design characteristics.

[0059] Please continue to readFigure 3 In an embodiment, the absolute value of the difference between the spacing of any two of the sub-black matrixes 2231 away from the substrate 221 and the substrate 221 is less than or equal to 30 nanometers.

[0060] Specifically, among any two of the sub-black matrixes 2231, one of the sub-black matrixes 2231 has a first spacing d1 between the side away from the substrate 221 and the substrate 221, and the other of the sub-black matrixes 2231 has a second spacing d2 between the side away from the substrate 221 and the substrate 221, and the absolute value of the difference between the first spacing d1 and the second spacing d2 is less than or equal to 30 nanometers.

[0061] It can be understood that the embodiment sets one of the first protruding portions 2241 corresponding to one of the sub-black matrixes 2231, and since the surface of the side of the sub-black matrix 2231 away from the substrate 221 is a flat surface, the thickness of the first protruding portion 2241 of the protective layer 224 can be kept uniform; at the same time, the orthographic projection of the first protruding portion 2241 on the substrate 221 covers the orthographic projection of the sub-black matrix 2231 on the substrate 221, which can better control the thickness of the first protruding portion 2241.

[0062] In addition, although there may be a thickness difference between adjacent two of the sub-black matrixes 2231, by setting the absolute value of the difference between the spacing of any two of the sub-black matrixes 2231 away from the substrate 221 and the substrate 221 to be less than or equal to 30 nanometers, that is, the thickness difference between any two of the sub-black matrixes 2231 is controlled within a small range, thereby mitigating the thickness variation of the protective layer 224, and further improving the uniformity of the first protruding portion 2241.

[0063] Further, the planarization of the protective layer 224 is greater than that of the black matrix layer 223; it should be noted that the planarization is the ability of a material to flow by itself to fill in the unevenness of the surface before curing; it can be understood that the embodiment sets the planarization of the protective layer 224 to be greater than that of the black matrix layer 223, so that in the manufacturing process of the display panel 2, the protective layer 224 can better fill in the unevenness of the surface of the black matrix layer 223 after coating to form a more flat and smooth surface; and the flat surface formed by the protective layer 224 with high planarization can reduce light scattering phenomenon and improve transmittance, thereby enhancing the brightness and clarity of the display picture.

[0064] It can be understood that the spacer columns 2251 are arranged on the side of the first protruding part 2241 away from the black matrix layer 223, that is, the spacer columns 2251 are arranged on the flat surface of the protective layer 224, so that the differences between the plurality of spacer columns 2251 are uniform, the stress on the liquid crystal layer 23 is uniform, the uneven phenomenon of the display picture is avoided, and the display quality is improved.

[0065] It should be noted that the film thicknesses of the color resist 2221 of different colors in the second substrate 22 are different due to different color gamut and color point requirements of different product specifications, and therefore, in the actual manufacturing process, the thickness difference between the adjacent two color resists 2221 will be different according to different product specifications. The thickness of the sub-black matrix 2231 and the thickness of the protective layer 224 can be limited according to the actual product needs, and therefore, the thickness of the sub-black matrix 2231, the thickness of the color resist 2221, and the thickness of the protective layer 224 are not specifically limited in this embodiment.

[0066] Please refer to Figure 3 and Figure 4 ; wherein, Figure 4 is a partial enlarged schematic view of the second substrate in the Figure 3 provided by the embodiment of the present application.

[0067] In an embodiment, the color resist layer 222 includes a plurality of color resist units 2220, and a color resist unit 2220 includes a first color resist 22211, a second color resist 22212, and a third color resist 22213 of different colors, which are arranged in a first direction X in sequence; wherein the first direction X can be the X direction in the Figure 3 , the thickness of the first color resist 22211 is less than the thickness of the second color resist 22212, and the thickness of the second color resist 22212 is less than the thickness of the third color resist 22213.

[0068] This embodiment takes the first color resist 22211 as a red color resist, the second color resist 22212 as a green color resist, and the third color resist 22213 as a blue color resist as an example to illustrate the technical solutions of the present application.

[0069] The black matrix layer 223 includes a plurality of first sub black matrixes 22311 and a plurality of second sub black matrixes 22312, one first sub black matrix 22311 corresponding to one first color resistance 22211 and one second color resistance 22212, and one second sub black matrix 22312 corresponding to one second color resistance 22212 and one third color resistance 22213; specifically, the first sub black matrix 22311 is located between the first color resistance 22211 and the second color resistance 22212, and the second sub black matrix 22312 is located between the second color resistance 22212 and the third color resistance 22213.

[0070] The second color resistance 22212 has a first thickness difference D1 between a side away from the substrate 221 and a side away from the first color resistance 22211, the third color resistance 22213 has a second thickness difference D2 between a side away from the substrate 221 and a side away from the second color resistance 22212, and the second sub black matrix 22312 has a third thickness difference D3 between a side away from the substrate 221 and a side away from the first sub black matrix 22311, the third thickness difference D3 being less than the second thickness difference D2, and the third thickness difference D3 being less than the first thickness difference D1.

[0071] It should be noted that due to the different thicknesses of the color resistances 2221 of different colors (such as red color resistance, green color resistance and blue color resistance), there are usually two main thickness differences (the first thickness difference D1 and the second thickness difference D2) in one color resistance unit 2220.

[0072] It can be understood that, in the embodiment, the first sub-black matrix 22311 is arranged between the first color resistance 22211 and the second color resistance 22212, the first sub-black matrix 22311 is used to fill the thickness difference between the first color resistance 22211 and the second color resistance 22212, the second sub-black matrix 22312 is arranged between the second color resistance 22212 and the third color resistance 22213, and the second sub-black matrix 22312 is used to fill the thickness difference between the second color resistance 22212 and the third color resistance 22213, so that the two original thickness differences (the first thickness difference D1 and the second thickness difference D2) are replaced by a single thickness difference (the first thickness difference D1) between the first sub-black matrix 22311 and the second sub-black matrix 22312, and meanwhile, since the third thickness difference D3 is smaller than the second thickness difference D2 and the third thickness difference D3 is smaller than the first thickness difference D1, the thickness difference of the entire panel is simplified and reduced, thereby providing a uniform substrate for subsequent coating of the protective layer 224, and further ensuring the uniformity of the step difference between the plurality of spacers 2251 and improving the display effect and product quality of the display panel 2.

[0073] Please continue to combine Figure 3 and Figure 4 In an embodiment, the black matrix layer 223 includes a plurality of third sub-black matrices 22313, and one of the third sub-black matrices 22313 is arranged between the third color resistance 22213 and the first color resistance 22211; wherein the third color resistance 22213 is away from one side of the substrate 221, and the first color resistance 22211 is away from one side of the substrate 221, and the fourth thickness difference D4 is formed between the third color resistance 22213 and the first color resistance 22211; the third sub-black matrix 22313 is away from one side of the substrate 221, and the second sub-black matrix 22312 is away from one side of the substrate 221, and the fifth thickness difference D5 is formed between the third sub-black matrix 22313 and the second sub-black matrix 22312; the third sub-black matrix 22313 is away from one side of the substrate 221, and the first sub-black matrix 22311 is away from one side of the substrate 221, and the sixth thickness difference D6 is formed between the third sub-black matrix 22313 and the first sub-black matrix 22311; the fifth thickness difference D5 is smaller than the fourth thickness difference D4, and the sixth thickness difference D6 is smaller than the fourth thickness difference D4.

[0074] It should be noted that, since the thicknesses of the color resistances 2221 of different colors (for example, red, green and blue) are different, there are usually five main thickness differences (two first thickness differences D1, two second thickness differences D2 and one fourth thickness difference D4) in two adjacent color resistance units 2220.

[0075] It can be understood that, by arranging the third sub-black matrix 22313 between the third color resistance 22213 and the first color resistance 22211, the third sub-black matrix 22313 fills the thickness difference between the third color resistance 22213 and the first color resistance 22211, so that the original five thickness differences (two first thickness differences D1, two second thickness differences D2, and one fourth thickness difference D4) are replaced by the thickness differences (two third thickness differences D3, one fifth thickness difference D5, and one sixth thickness difference D6) between the first sub-black matrix 22311, the second sub-black matrix 22312, and the third sub-black matrix 22313. At the same time, since the fifth thickness difference D5 is smaller than the fourth thickness difference D4, and the sixth thickness difference D6 is smaller than the fourth thickness difference D4, the thickness difference of the entire panel is simplified and reduced, thereby providing a uniform substrate for subsequent coating of the protective layer 224, and further ensuring the uniformity of the step difference between the plurality of spacers 2251, and improving the display effect and product quality of the display panel 2.

[0076] Further, the fifth thickness difference D5 is smaller than the first thickness difference D1, and the fifth thickness difference D5 is smaller than the second thickness difference D2; the sixth thickness difference D6 is smaller than the first thickness difference D1, and the sixth thickness difference D6 is smaller than the second thickness difference D2, so that the entire structure is more flat and uniform, and the problem of uneven thickness of the protective layer 224 caused by the thickness difference between different colors of the color resistance 2221 is improved.

[0077] Please continue to refer to Figure 3 In an embodiment, the spacer layer 225 includes a plurality of main spacers 22511 and a plurality of auxiliary spacers 22512, and the thickness of the main spacers 22511 is greater than the thickness of the auxiliary spacers 22512 in a direction parallel to the horizontal plane of the substrate 221; wherein the distance between any two main spacers 22511 away from one side of the substrate 221 and the substrate 221 is the same; and the distance between any two auxiliary spacers 22512 away from one side of the substrate 221 and the substrate 221 is the same.

[0078] It should be noted that, in the display panel 2, the thickness of the liquid crystal layer 23 directly affects the optical performance and display quality of the display panel 2, and an excessively large or small thickness of the liquid crystal layer 23 will cause display problems such as color distortion and uneven brightness; wherein the design of the spacer 2251 is closely related to the uniformity of the thickness of the liquid crystal layer 23, and the thickness difference of the spacer 2251 in different regions may cause the thickness of the liquid crystal layer 23 to be uneven.

[0079] The main spacers 22511 are used for supporting to ensure the reference thickness of the liquid crystal layer 23, one main spacer 22511, one first protruding part 2241 and one sub black matrix 2231 are correspondingly arranged, the orthographic projection of the main spacer 22511 on the substrate 221 is located in the orthographic projection of the black matrix layer 223 on the substrate 221; the thickness of the auxiliary spacer 22512 is less than that of the main spacer 22511, the auxiliary spacer 22512 is used for assisting in controlling the local thickness of the liquid crystal layer 23 and providing additional support, one auxiliary spacer 22512, one first protruding part 2241 and one sub black matrix 2231 are correspondingly arranged, the orthographic projection of the auxiliary spacer 22512 on the substrate 221 is located in the orthographic projection of the black matrix layer 223 on the substrate 221.

[0080] It can be understood that, by arranging the distance between the side of any two main spacers 22511 away from the substrate 221 and the substrate 221 to be the same, it is ensured that the thickness of all the main spacers 22511 arranged on the first protruding part 2241 is consistent, thereby ensuring that the liquid crystal layer 23 has the same thickness in the area where the main spacers 22511 are located, and guaranteeing the reference thickness of the liquid crystal layer 23; the distance between the side of any two auxiliary spacers 22512 away from the substrate 221 and the substrate 221 is the same, thereby ensuring that the thickness of all the auxiliary spacers 22512 arranged on the first protruding part 2241 is consistent, and further refining the control of the thickness of the liquid crystal layer 23; at the same time, the thickness of the main spacers 22511 is completely consistent, and the thickness of the auxiliary spacers 22512 is completely consistent, thereby ensuring the uniformity of the step difference between the plurality of spacers 2251, avoiding stress concentration and mechanical deformation problems caused by uneven structure, and enhancing the mechanical test capability.

[0081] As described above, by accurately controlling the thickness of the main spacers 22511 and the auxiliary spacers 22512, material waste can be reduced, the design of consistent thickness makes the manufacturing of the protective layer 224 and the spacers 2251 more controllable, reduces unnecessary material waste, improves the production yield, thereby reducing the production cost and improving the profit space of the display panel 2.

[0082] Please refer to Figure 2 and Figure 5 ; wherein, Figure 5 is a second structure diagram of a second substrate provided by the embodiment of the application.

[0083] In an embodiment, the distance between any two of the sub-black matrices 2231 and the substrate 221 is equal; specifically, among any two of the sub-black matrices 2231, one of the sub-black matrices 2231 has a first distance between a side thereof away from the substrate 221 and the substrate 221, and the other of the sub-black matrices 2231 has a second distance between a side thereof away from the substrate 221 and the substrate 221, the first distance being equal to the second distance, i.e., there is no difference in thickness between adjacent sub-black matrices 2231, and the distance between a side of all the sub-black matrices 2231 away from the substrate 221 and the substrate 221 is equal, so that the surface of the black matrix layer 223 away from the substrate 221 is a flat surface.

[0084] It can be understood that, by setting the distance between any two of the sub-black matrices 2231 and the substrate 221 to be equal, the thickness difference between adjacent sub-black matrices 2231 is eliminated, so that the thickness of the sub-black matrices 2231 remains consistent, and the problems of thickness variation of the protective layer 224 and poor segment difference uniformity of the plurality of the spacers 2251 caused by the thickness difference between the color resist layers 2221 of different colors are further avoided.

[0085] Please refer to Figure 2 and Figure 6 ; wherein, Figure 6 is a third structure diagram of a second substrate provided in the embodiments of the present application.

[0086] In an embodiment, adjacent two of the color resist layers 2221 have an overlapping portion 2222, the overlapping portion 2222 being convex on a side of the color resist layer 222 away from the substrate 221; wherein, among the sub-black matrix 2231 and the adjacent two of the color resist layers 2221 corresponding to the sub-black matrix 2231, the orthogonal projection of the sub-black matrix 2231 on the substrate 221 covers the orthogonal projection of the overlapping portion 2222 on the substrate 221, and a side of the sub-black matrix 2231 away from the color resist layer 222 is a flat surface.

[0087] It should be noted that, because the thicknesses of the color resist layers 2221 of different colors are different, when these color resist layers 2221 of different colors are arranged in adjacent positions in the design and manufacturing process, they can partially overlap in the contact portion, i.e., an overlapping portion 2222 shaped like a cow horn is generated, the existence of the overlapping portion 2222 can cause the thickness of the protective layer 224 in these areas to be non-uniform, affecting the overall uniformity and stability of the protective layer 224, and further causing poor segment difference uniformity of the spacers 2251 and affecting the thickness uniformity of the liquid crystal layer 23.

[0088] The black matrix layer 223 can use a material with good self-leveling properties, such as photoresist or other high-flow resin, which can automatically flow and fill the unevenness of the surface after coating. It can be understood that, in the present embodiment, the orthographic projection of the sub-black matrix 2231 on the substrate 221 covers the orthographic projection of the overlapping portion 2222 on the substrate 221, and due to the self-leveling effect, the sub-black matrix 2231 can automatically level, so that the sub-black matrix 2231 forms a uniform cover layer on the color resistance layer 222, thereby eliminating the problems of uneven thickness of the protective layer 224 and inconsistent step difference of the spacer 2251 caused by the overlapping portion 2222.

[0089] Please refer to Figure 7 The structure of the display device provided in the present embodiment is shown in the following figure.

[0090] The present embodiment also provides a display device 3, which comprises a backlight module 3A and a display panel 2, the backlight module 3A is arranged on the side of the display panel 2 which is away from the light source, and the brightness of the display panel 2 is realized by the light source provided by the backlight module 3A; wherein the display panel 2 can be any of the display panels described in the above embodiments.

[0091] It can be understood that the display panel 2 has been described in detail in the above embodiments, which will not be repeated here.

[0092] In specific applications, the display device 3 can be at least one of a smart phone, a tablet computer, a mobile phone, a video phone, an electronic book reader, a desktop computer, a laptop computer, a netbook, a workstation, a server, a personal digital assistant, a portable media player, an MP3 player, a mobile medical machine, a camera, a game machine, a digital camera, a car navigation device, an electronic billboard, an automatic teller machine, or a wearable device, etc.

[0093] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0094] The above has carried out the detailed introduction to the display panel and the display device provided by the embodiment of the application, the principle and the implementation mode of the application are described in the text by applying specific examples, the above embodiment is only used for helping understanding the technical scheme of the application and its core idea; the ordinary skilled in the art should understand that: it can still modify the technical scheme recorded by the foregoing each embodiment, or equivalent replacement is carried out to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the application.

Claims

1. A display panel, characterized in that: include: substrate; A color resist layer is provided on one side of the substrate, the color resist layer comprising a plurality of color resists arranged in contact with each other, and the colors and thicknesses of two adjacent color resists are different; a black matrix layer disposed on a side of the color resist layer away from the substrate, the black matrix layer comprising a plurality of sub-black matrices spaced apart from each other, wherein a sub-black matrix is ​​disposed corresponding to and located between two adjacent color resists, wherein the thicknesses of the two adjacent sub-black matrices are different, and the thickness difference between the two adjacent sub-black matrices is smaller than the thickness difference between the two adjacent color resists; a protective layer disposed on a side of the black matrix layer away from the color resist layer, the protective layer comprising a plurality of first protrusions, wherein one first protrusion is disposed corresponding to one sub-black matrix; a spacer layer, disposed on a side of the protective layer away from the black matrix layer, the spacer layer comprising a plurality of spacer columns, wherein one spacer column is disposed corresponding to one first protrusion; Wherein, the distance between any two of the first protrusions that are away from the substrate and the substrate is the same.

2. The display panel according to claim 1, wherein: An absolute value of a distance difference between any two of the sub-black matrices at sides away from the substrate and the substrate is less than or equal to 30 nanometers.

3. The display panel according to claim 2, wherein: The distances between any two sides of the sub-black matrices away from the substrate and the substrate are equal.

4. The display panel according to claim 2, wherein: The color resist layer includes a plurality of color resist units, wherein the color resist unit includes a first color resist, a second color resist, and a third color resist of different colors, and the first color resist, the second color resist, and the third color resist are sequentially arranged along a first direction; The black matrix layer includes a plurality of first sub-black matrices and a plurality of second sub-black matrices, wherein a first sub-black matrix corresponds to a first color resistor and a second color resistor, and a second sub-black matrix corresponds to a second color resistor and a third color resistor; Among them, there is a first thickness difference between the side of the second color block away from the substrate and the side of the first color block away from the substrate, there is a second thickness difference between the side of the third color block away from the substrate and the side of the second color block away from the substrate, there is a third thickness difference between the side of the second sub-black matrix away from the substrate and the side of the first sub-black matrix away from the substrate, the third thickness difference is smaller than the second thickness difference, and the third thickness difference is smaller than the first thickness difference.

5. The display panel according to claim 4, wherein: The black matrix layer further includes a plurality of third sub-black matrices, wherein the third sub-black matrix is ​​located between the third color resist and the first color resist; Among them, there is a fourth thickness difference between the side of the third color block away from the substrate and the side of the first color block away from the substrate, there is a fifth thickness difference between the side of the third sub-black matrix away from the substrate and the side of the second sub-black matrix away from the substrate, there is a sixth thickness difference between the side of the third sub-black matrix away from the substrate and the side of the first sub-black matrix away from the substrate, the fifth thickness difference is smaller than the fourth thickness difference, and the sixth thickness difference is smaller than the fourth thickness difference.

6. The display panel according to claim 5, wherein: The fifth thickness is smaller than the first thickness difference, and the fifth thickness is smaller than the second thickness difference; the sixth thickness is smaller than the first thickness difference, and the sixth thickness is smaller than the second thickness difference.

7. The display panel according to any one of claims 1 to 6, characterized in that: An overlapping portion is provided between two adjacent color resists, and the overlapping portion is protruded on a side of the color resist away from the substrate; Among them, in one of the sub-black matrix and its corresponding two adjacent color resists, the orthographic projection of the sub-black matrix on the substrate covers the orthographic projection of the overlapping portion on the substrate, and the side of the sub-black matrix away from the color resist layer is a flat surface.

8. The display panel according to any one of claims 1 to 6, characterized in that: The sub-black matrix is ​​located between two adjacent color resists, and the sub-black matrix includes a first portion and a second portion connected to the first portion. The orthographic projection of the first portion on the substrate is located within the orthographic projection of one color resist on the substrate, and the orthographic projection of the second portion on the substrate is located within the orthographic projection of the other color resist on the substrate. The distance between the side of the first portion away from the substrate and the substrate is equal to the distance between the side of the second portion away from the substrate and the substrate.

9. The display panel according to any one of claims 1 to 6, characterized in that: The spacer layer includes a plurality of main spacer columns and a plurality of auxiliary spacer columns, and in a direction parallel to the horizontal plane of the substrate, the thickness of the main spacer columns is greater than the thickness of the auxiliary spacer columns; The distance between any two main spacer columns and the substrate at a side away from the substrate is the same; the distance between any two auxiliary spacer columns and the substrate at a side away from the substrate is the same.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

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