Display panel and display terminal

Abstract

The invention relates to a display panel and a display terminal. The display panel comprises a first substrate, a second substrate, a color film layer and a liquid crystal layer, wherein the second substrate and the first substrate are opposite and are arranged at an interval; the color film layer is arranged between the first substrate and the second substrate and comprises a plurality of color resistance blocks with different colors; the liquid crystal layer is arranged between the first substrate and the second substrate, and when the thickness of the liquid crystal layer is configured to be the first thickness, the light transmittance of the liquid crystal layer to red light, green light and blue light is the same; wherein the thickness of the liquid crystal layer corresponding to the color resistance block of at least one color is greater than the first thickness. The thickness of the liquid crystal layer is configured to be larger than the first thickness, so that the light transmittance of the liquid crystal layer corresponding to the color resistance block of at least one color is increased, and the light transmittance of the display panel is improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display panel and a display terminal. Background Art

[0002] A liquid crystal display panel includes two substrates that are opposite and spaced apart, and a liquid crystal layer is disposed between the two substrates. A backlight module is disposed on one side of the liquid crystal display panel, and the light emitted from the backlight module is incident into the liquid crystal display panel.

[0003] In related technologies, the light transmittance of the liquid crystal display panel is relatively low. In order to achieve higher display brightness, it is necessary to increase the brightness of the backlight module, resulting in an increase in the power consumption of the backlight module.

[0004] Therefore, it is urgent to solve the above technical problems. Summary of the Invention

[0005] Embodiments of this application provide a display panel and a display terminal to solve the technical problem that it is difficult for the display panel to ensure that all color sub-pixels are in an optimal light transmittance, thereby affecting the display brightness.

[0006] To achieve the above object, according to the first aspect of this application, a display panel is provided, including:

[0007] A first substrate;

[0008] A second substrate, which is opposite and spaced apart from the first substrate;

[0009] A color filter layer, disposed between the first substrate and the second substrate, and the color filter layer includes a plurality of color resist blocks of different colors;

[0010] A liquid crystal layer, disposed between the first substrate and the second substrate. When the thickness of the liquid crystal layer is configured as a first thickness, the light transmittance of the liquid crystal layer for red light, green light, and blue light is the same;

[0011] Wherein, the thickness of the liquid crystal layer corresponding to the color resist blocks of at least one color is greater than the first thickness.

[0012] Optionally, the display panel further includes:

[0013] A pixel electrode, disposed on the side of the first substrate close to the liquid crystal layer

[0014] An insulating layer, disposed between the first substrate and the pixel electrode. A plurality of grooves are formed on the surface of the insulating layer close to the pixel electrode side, and one groove is disposed in alignment with one color resist block;

[0015] Among them, the depth of the groove corresponding to the color resistance block of at least one color is greater than the depth of the groove corresponding to the color resistance block of another color.

[0016] Optionally, the plurality of color resistance blocks of different colors include a red color resistance block, a green color resistance block, and a blue color resistance block. The plurality of grooves include a first sub-groove, a second sub-groove, and a third sub-groove. The red color resistance block corresponds to the first sub-groove, the green color resistance block corresponds to the second sub-groove, and the blue color resistance block corresponds to the third sub-groove.

[0017] Among them, the depth of the first sub-groove is greater than the depth of the third sub-groove, and the thickness of the liquid crystal layer corresponding to the first sub-groove is greater than the thickness of the liquid crystal layer corresponding to the third sub-groove; and / or

[0018] the depth of the second sub-groove is greater than the depth of the third sub-groove, and the thickness of the liquid crystal layer corresponding to the second sub-groove is greater than the thickness of the liquid crystal layer corresponding to the third sub-groove.

[0019] Optionally, the depth of the first sub-groove is greater than the depth of the second sub-groove, the thickness of the liquid crystal layer corresponding to the first sub-groove is greater than the thickness of the liquid crystal layer corresponding to the second sub-groove, the depth of the second sub-groove is greater than the depth of the third sub-groove, and the thickness of the liquid crystal layer corresponding to the second sub-groove is greater than the thickness of the liquid crystal layer corresponding to the third sub-groove.

[0020] Optionally, the thickness of the liquid crystal layer corresponding to the first sub-groove is greater than the first thickness, and the thickness of the liquid crystal layer corresponding to the second sub-groove is greater than the first thickness.

[0021] Optionally, the thickness of the liquid crystal layer corresponding to the third sub-groove is equal to the first thickness.

[0022] Optionally, a light-shielding portion is provided between two adjacent color resistance blocks. The light-shielding portion overlaps with the edges of the adjacent color resistance blocks and also overlaps with the edges of the grooves.

[0023] Optionally, the insulating layer is in contact with the pixel electrode, and the depth of the groove is less than or equal to the thickness of the insulating layer.

[0024] Optionally, the thicknesses of the pixel electrodes corresponding to the color resistance blocks of different colors are the same.

[0025] According to the second aspect of the present application, a display terminal is provided, including the above-mentioned display panel.

[0026] In the display panel according to the embodiment of the present application, by configuring the thickness of the liquid crystal layer to be greater than the first thickness, the light transmittance of the liquid crystal layer corresponding to at least one color resistance block is increased, thereby improving the light transmittance of the display panel and enhancing the display brightness.

[0027] Other features and advantages of the present application will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals in the following description represent the same parts.

[0030] Figure 1 is a top view structural schematic diagram of a display panel provided in an exemplary embodiment of the present disclosure;

[0031] Figure 2 is a relationship curve between the relative light transmittance of liquid crystal molecules to light of different colors and the thickness of the liquid crystal layer;

[0032] Figure 3 is Figure 1 a cross-sectional structural schematic diagram at C-C in

[0033] Figure 4 is Figure 1 a partial structural schematic diagram at D-D in

[0034] Figure 5 is Figure 1 another partial structural schematic diagram at D-D in

[0035] Figure 6 is Figure 1 another partial structural schematic diagram at D-D in

[0036] Figure 7 is a process flow diagram of an insulating layer provided in an exemplary embodiment of the present disclosure;

[0037] Figure 8 is Figure 7 a structural schematic diagram of a halftone mask in

[0038] Figure 9 is a top view structural schematic diagram of a display terminal provided in an exemplary embodiment of the present disclosure.

[0039] Description of the reference numerals:

[0040] 1 - Display panel; AA - Display part; NA - Non - display part;

[0041] 10 - First substrate;

[0042] 20 - Second substrate;

[0043] 30 - Color filter layer; 31 - Color resist block; 311 - Red color resist block; 312 - Green color resist block; 313 - Blue color resist block; 32 - Light - shielding part;

[0044] 40 - Liquid crystal layer;

[0045] 51 - Pixel electrode; 511 - Branch electrode; 52 - Common electrode; 53 - Bonding part;

[0046] 60 - Insulating layer; 60a - Groove; 601a - First sub - groove; 602a - Second sub - groove; 603a - Third sub - groove;

[0047] 71 - First polarizer; 72 - Second polarizer; 73 - Thin - film transistor; 731 - Active part; 732 - Gate; 733 - Source; 734 - Drain; 74 - Light - shielding layer;

[0048] 81 - Photoresist; 82 - First region; 83 - Second region; 84 - Third region;

[0049] 90 - Halftone mask;

[0050] d - Thickness of the liquid crystal layer 40; d1 - Thickness of the liquid crystal layer 40 corresponding to the first sub - groove 601a; d2 - Thickness of the liquid crystal layer 40 corresponding to the second sub - groove 602a; d3 - Thickness of the liquid crystal layer 40 corresponding to the third sub - groove 603a;

[0051] 2 - Display terminal; 3 - Terminal body. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying 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 of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0053] To achieve the above object, according to the first aspect of the present application, as Figure 1 , Figures 3 to 6As shown in the figure, a display panel 1 is provided, which includes a first substrate 10, a second substrate 20, a color filter layer 30, and a liquid crystal layer 40. The second substrate 20 is opposite to and spaced apart from the first substrate 10. The color filter layer 30 is disposed between the first substrate 10 and the second substrate 20, and the color filter layer 30 includes a plurality of color resist blocks 31 of different colors. The liquid crystal layer 40 is disposed between the first substrate 10 and the second substrate 20. When the thickness d of the liquid crystal layer 40 is configured as a first thickness, the transmittance of the liquid crystal layer 40 to red light, green light, and blue light is the same. Among them, the thickness d of the liquid crystal layer 40 corresponding to at least one color of the color resist blocks 31 is greater than the first thickness.

[0054] The display panel 1 is a liquid crystal panel. The display panel 1 is a non-self-luminous panel and requires a backlight module to provide a backlight source for the display panel 1. The backlight source is a white planar light source.

[0055] As Figure 1 shown in the figure, the display panel 1 includes a display portion AA and a non-display portion NA disposed around the display portion AA. The display portion AA is used to display a picture. The display portion AA may be provided with a plurality of sub-pixels, and the sub-pixels may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, so as to achieve color display. The non-display portion NA may be provided with a driving circuit, such as a gate driving circuit, etc., and the driving circuit may provide driving signals for the sub-pixels.

[0056] As Figure 3 shown in the figure, the display panel 1 includes a first substrate 10 and a second substrate 20 that are opposite to and spaced apart from each other, and a liquid crystal layer 40 is disposed between the first substrate 10 and the second substrate 20. By applying different electric fields to the liquid crystal molecules in the liquid crystal layer 40, their orientations are changed, so as to control the transmittance of the display panel 1, and further control the brightness and darkness of the display picture.

[0057] A color filter layer 30 is disposed on one of the first substrate 10 or the second substrate 20. The color filter layer 30 includes a plurality of color resist blocks 31 of different colors. The color resist blocks 31 of different colors can convert white light into corresponding color light, so as to present a color image. For example, the color resist blocks 31 of different colors may include a red color resist block 311, a green color resist block 312, and a blue color resist block 313. The red color resist block 311 allows red light to pass through and blocks light of other colors. The green color resist block 312 allows green light to pass through and blocks light of other colors. The blue color resist block 313 allows blue light to pass through and blocks light of other colors. The red sub-pixel corresponds to the red color resist block 311, the green sub-pixel corresponds to the green color resist block 312, and the blue sub-pixel corresponds to the blue color resist block 313.

[0058] In some embodiments, the color filter layer 30 may be disposed on the side of the first substrate 10 close to the liquid crystal layer 40.

[0059] In some other embodiments, as Figure 3As shown, the color film layer 30 can be disposed on one side of the second substrate 20 close to the liquid crystal layer 40.

[0060] In some embodiments, the materials of the first substrate 10 and the second substrate 20 can both be glass or the like.

[0061] As Figure 3 shown, a first polarizer 71 is provided on the surface of the first substrate 10 away from the second substrate 20, and a second polarizer 72 is provided on the surface of the second substrate 20 away from the first substrate 10. When the first polarizer 71 is disposed on the side of the second polarizer 72 close to the backlight module, the first polarizer 71 can convert the light incident from the backlight module into polarized light. When the polarized light is incident on the liquid crystal layer 40, the liquid crystal molecules in the liquid crystal layer 40 can change the polarization state of the polarized light, thereby controlling whether the polarized light can exit from the second polarizer 72. Through the above settings, the light transmittance of the display panel 1 can be further controlled.

[0062] As Figure 3 shown, the liquid crystal layer 40 is disposed between the first substrate 10 and the second substrate 20. The thickness d of the liquid crystal layer 40 refers to the thickness of the liquid crystal layer 40 in the direction perpendicular to the display surface, and the display surface is parallel to the surface of the first substrate 10 close to the liquid crystal layer 40. That is, the thickness d of the liquid crystal layer 40 is the Figure 3 vertical dimension in

[0063] As Figure 4 shown, the liquid crystal layer 40 is filled between the first substrate 10 and the second substrate 20, and the thickness d of the liquid crystal layer 40 can be adjusted by controlling the distance between the surface of the liquid crystal layer 40 close to the first substrate 10 and the surface of the liquid crystal layer 40 close to the second substrate 20. As Figure 4 shown, a groove 60a or a protrusion can be provided on the surface of the first substrate 10 close to the liquid crystal layer 40, and / or a groove 60a or a protrusion can be provided on the surface of the second substrate 20 close to the liquid crystal layer 40 to adjust the thickness d of the liquid crystal layer 40.

[0064] When light passes through the liquid crystal layer 40, due to the birefringence characteristics of the liquid crystal molecules, the light will be decomposed into two mutually perpendicular polarization components. These two components propagate along different directions in the liquid crystal molecules, and since the refractive indices of the liquid crystal molecules are different in different directions, the propagation speeds of the light rays are also different. After a certain distance (i.e., the thickness of the liquid crystal layer 40), an optical path difference will be generated between these two polarization components. The magnitude of the optical path difference is proportional to the birefringence Δn and the thickness of the liquid crystal layer 40.

[0065] When the optical path difference satisfies Δnd = λ / 2, a phase difference of π / 2 (90°) is generated between the two beams of light, which can be used to modulate the polarization state of the light and control the transmission and blocking of the light. Here, Δn is the birefringence of the liquid crystal molecules, that is, the difference in refractive indices of the liquid crystal molecules in different directions, which reflects the optical anisotropy characteristics of the liquid crystal molecules. d is the path length of the light propagating in the liquid crystal layer 40, that is, the thickness of the liquid crystal layer 40 is d. λ is the wavelength of the light in vacuum.

[0066] As Figure 2 shown, Figure 2 is a relationship curve between the relative light transmittance of liquid crystal molecules to light of different colors and the thickness of the liquid crystal layer 40. The abscissa is the thickness of the liquid crystal layer 40, and the ordinate is the relative light transmittance. R represents red light, G represents green light, and B represents blue light. As Figure 2 shown, when the thickness of the liquid crystal layer 40 is 3 microns, the relative light transmittance of RGB is 100%. As the thickness of the liquid crystal layer 40 increases, the relative light transmittance of red light and green light increases, while the relative light transmittance of blue light decreases.

[0067] It should be understood that the actual value of the light transmittance should be less than 100%. The light transmittance refers to the percentage of the light flux transmitted through the display panel 1 to the incident light flux, which directly reflects the ability of the display panel 1 to allow light to pass through. It is an absolute value and reflects the optical characteristics of the display panel 1 itself. For example, if the light transmittance of the display panel 1 is 6%, it means that 6% of the incident light can pass through the display panel.

[0068] The relative light transmittance refers to the light transmittance value obtained by setting the light transmittance of a certain reference standard as the benchmark (usually set to 100%) under specific conditions and then comparing other measurement objects with this benchmark. In the embodiments of the present application, in order to facilitate the comparison of the change degrees of the light transmittances of red light, green light, and blue light, the light transmittance when the light transmittances of red light, green light, and blue light are the same is defined as a relative light transmittance of 100%. That is to say, taking the relative light transmittance as the reference value, the light transmittance greater than the relative light transmittance is defined as greater than 100%, and the light transmittance less than the relative light transmittance is defined as less than 100%. For example, taking the light transmittance of a display panel 1 as 5% as the benchmark, if the light transmittance of another display panel 1 is measured to be 10%, then its relative light transmittance is 200%.

[0069] In the related art, by setting the thickness d of the liquid crystal layer 40 corresponding to the photoresist 81 of different colors to the same value, such as 3 microns, the relative light transmittance of sub-pixels of each color is 100%. In the present application, by setting the thickness d of the liquid crystal layer 40 corresponding to at least one color of the photoresist 81 to be greater than the first thickness, the relative light transmittance of the light of at least one color can be increased, thereby increasing the light transmittance of the display panel 1. For example, the thickness d of the liquid crystal layer 40 corresponding to the red color resist block 311 can be set to be greater than the first thickness, so as to increase the relative light transmittance of the sub-pixel corresponding to the red color resist block 311, thereby increasing the light transmittance of the display panel 1. And / or, the thickness d of the liquid crystal layer 40 corresponding to a green color resist block 312 is set to be greater than the first thickness, so as to increase the relative light transmittance of the sub-pixel corresponding to the green color resist block 312, thereby increasing the light transmittance of the display panel 1.

[0070] It should be noted that for different liquid crystal molecules, different first thicknesses can be provided. For example, Figure 2 the first thickness of the liquid crystal layer 40 in is 3 microns. The relationship curves of the relative light transmittance of the liquid crystal molecules to red light, the relative light transmittance of the liquid crystal molecules to green light, and the relative light transmittance of the liquid crystal molecules to blue light with respect to the thickness of the liquid crystal layer 40 intersect, and the thickness d of the liquid crystal layer 40 corresponding to the intersection point is the first thickness.

[0071] As Figure 3 shown, a driving circuit is provided on the side of the first substrate 10 close to the liquid crystal layer 40, and the driving circuit includes a thin film transistor 73 and the like. The thin film transistor 73 includes an active portion 731, a gate 732, a source 733, and a drain 734. The thin film transistor 73 can be a top-gate transistor or a bottom-gate transistor. For the top-gate transistor, the gate 732 is disposed on the side of the active portion 731 facing away from the first substrate 10, and for the bottom-gate transistor, the gate 732 is disposed on the side of the active portion 731 close to the first substrate 10. The source 733 and the drain 734 can be disposed in the same layer, thereby simplifying the manufacturing process of the display panel 1. The display panel 1 further includes a light-shielding layer 74 disposed on the side of the active portion 731 close to the first substrate 10, and the light-shielding layer 74 is used to shield the active portion 731 to prevent light from the side of the first substrate 10 from irradiating the active portion 731 and affecting the electrical properties of the active portion 731.

[0072] In some embodiments, the material of the active portion 731 includes amorphous silicon, low-temperature polycrystalline silicon, metal oxide semiconductor, etc.

[0073] In some embodiments, the materials of the gate 732, the source 733, and the drain 734 can be any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or an alloy thereof.

[0074] As shown Figure 3 in FIG. 1, the display panel 1 further includes a pixel electrode 51 and a common electrode 52. The pixel electrode 51 is used to provide a pixel voltage, and the common electrode 52 is used to provide a common voltage. An electric field is formed between the pixel electrode 51 and the common electrode 52, and the liquid crystal molecules in the liquid crystal layer 40 are deflected in the electric field. By controlling the magnitude of the electric field, the deflection angle of the liquid crystal molecules can be controlled, thereby realizing the control of the brightness of the display screen.

[0075] The pixel electrode 51 and the common electrode 52 are made of a transparent conductive material, such as any one of ITO (indium tin oxide), IZO (indium zinc oxide), IZTO (indium zinc tin oxide), IAZO (indium aluminum zinc oxide), IGZO (indium gallium zinc oxide), IGTO (indium gallium tin oxide), AZO (aluminum zinc oxide), ATO (antimony tin oxide), IGZTO (indium gallium zinc tin oxide), IGO (indium gallium oxide), InO (indium oxide), etc., or an alloy thereof.

[0076] In some embodiments, the display panel 1 can be any one of a vertical alignment (VA) type, a twisted nematic (TN) type, a super twisted nematic (STN) type, an in-plane switching (IPS) type, and a fringe field switching (FFS) type.

[0077] Optionally, as shown Figure 4 in FIG. 2 Figure 4 is Figure 1 a schematic diagram of a partial structure at D-D in FIG. 1. Figure 4 The film layer structure not shown in FIG. 1 can be referred to Figure 3 FIG. 2. The display panel 1 further includes a pixel electrode 51 and an insulating layer 60. The pixel electrode 51 is disposed on one side of the first substrate 10 close to the liquid crystal layer 40; the insulating layer 60 is disposed between the first substrate 10 and the pixel electrode 51. A plurality of grooves 60a are formed on the surface of the insulating layer 60 close to the pixel electrode 51, and one groove 60a is disposed opposite to one color resist block 31; wherein, the depth of the groove 60a corresponding to at least one color of the color resist block 31 is greater than the depth of the groove 60a corresponding to the color resist block 31 of another color.

[0078] Please refer to Figure 3 and Figure 4 FIG. 3. The pixel electrode 51 is disposed on one side of the first substrate 10 close to the liquid crystal layer 40. The pixel electrode 51 can be connected to the drain 734 of the thin film transistor 73, and the data signal in the display panel 1 can be input to the pixel electrode 51 through the thin film transistor 73.

[0079] In some embodiments, as Figure 4 shown, the pixel electrode 51 may include a plurality of branch electrodes 511, and two adjacent branch electrodes 511 are arranged at intervals.

[0080] In some embodiments, as Figure 3 shown, the common electrode 52 and the pixel electrode 51 may both be disposed on the first substrate 10. For example, the common electrode 52 is disposed on a side of the pixel electrode 51 close to the first substrate 10.

[0081] As Figure 3 shown, an insulating layer 60 is disposed between the pixel electrode 51 and the first substrate 10. The material of the insulating layer 60 may be an organic insulating material or an inorganic insulating material. For example, the organic insulating materials include resin materials such as polyimide, epoxy resin, acrylic, polyester, photoresist, polyacrylate, polyamide, silicone, etc. The inorganic insulating materials include silicon oxide, silicon nitride, silicon oxynitride, etc.

[0082] As Figure 1 and Figure 4 shown, a groove 60a is provided on a surface of the insulating layer 60 close to the pixel electrode 51, and one groove 60a is disposed opposite to one color resist block 31. That is to say, the positive projection of the side wall of the groove 60a on the first substrate 10 is located within the positive projection of the color resist block 31 on the first substrate 10.

[0083] As Figure 1 and Figure 4 shown, the depth of the groove 60a corresponding to the color resist block 31 of at least one color is greater than the depth of the groove 60a corresponding to the color resist block 31 of another color. For example, the depth of the groove 60a corresponding to the red color resist block 311 is greater than the depth of the groove 60a corresponding to the green color resist block 312. And / or, the depth of the groove 60a corresponding to the red color resist block 311 is greater than the depth of the groove 60a corresponding to the blue color resist block 313.

[0084] In some embodiments, the grooves 60a with different depths may be realized by a half-tone mask 90 (Half Tone Mask, HTM). The half-tone mask can control the exposure amount of different regions, so as to realize different etching depths in different regions, that is, the half-tone mask 90 can realize different depths of the grooves 60a through the same mask, thereby simplifying the manufacturing process of the display panel 1.

[0085] Optionally, as Figures 4 to 6As shown, a plurality of color resistance blocks 31 of different colors include a red color resistance block 311, a green color resistance block 312, and a blue color resistance block 313. A plurality of grooves 60a include a first sub-groove 601a, a second sub-groove 602a, and a third sub-groove 603a. The red color resistance block 311 corresponds to the first sub-groove 601a, the green color resistance block 312 corresponds to the second sub-groove 602a, and the blue color resistance block 313 corresponds to the third sub-groove 603a. Among them, the depth of the first sub-groove 601a is greater than the depth of the third sub-groove 603a, and the thickness d1 of the liquid crystal layer 40 corresponding to the first sub-groove 601a is greater than the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-groove 603a; and / or, the depth of the second sub-groove 602a is greater than the depth of the third sub-groove 603a, and the thickness d2 of the liquid crystal layer 40 corresponding to the second sub-groove 602a is greater than the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-groove 603a.

[0086] As Figure 1 and Figure 4 shown, the red color resistance block 311 corresponds to the first sub-groove 601a, that is to say, the orthographic projection of the side wall of the first sub-groove 601a on the first substrate 10 is located within the orthographic projection of the red color resistance block 311 on the first substrate 10.

[0087] As Figure 1 and Figure 4 shown, the green color resistance block 312 corresponds to the second sub-groove 602a, that is to say, the orthographic projection of the side wall of the second sub-groove 602a on the first substrate 10 is located within the orthographic projection of the green color resistance block 312 on the first substrate 10.

[0088] As Figure 1 and Figure 4 shown, the blue color resistance block 313 corresponds to the third sub-groove 603a, that is to say, the orthographic projection of the side wall of the third sub-groove 603a on the first substrate 10 is located within the orthographic projection of the blue color resistance block 313 on the first substrate 10.

[0089] As Figure 4 shown, since one side surface of the insulating layer 60 close to the liquid crystal layer 40 has a plurality of grooves 60a, therefore, one side surface of the insulating layer 60 close to the liquid crystal layer 40 is an uneven surface. For the convenience of description, the surface of the insulating layer 60 closest to the liquid crystal layer 40 is called the first surface, that is, the distance between the first surface and the lower surface of the liquid crystal layer 40 is less than the distance between the lower surface of the liquid crystal layer 40 and other surfaces of the insulating layer 60 except the first surface.

[0090] The depth of the first sub-groove 601a refers to the distance between the bottom wall of the first sub-groove 601a and the first surface. The depth of the second sub-groove 602a refers to the distance between the bottom wall of the second sub-groove 602a and the first surface. The depth of the third sub-groove 603a refers to the distance between the bottom wall of the third sub-groove 603a and the first surface.

[0091] In some embodiments, as Figure 6 shown, Figure 6 the embodiment of Figure 4 differs from the embodiment in Figure 6 in the thickness d of the liquid crystal layer 40. As Figure 6 shown, the depth of the first sub-groove 601a is greater than the depth of the third sub-groove 603a. The thickness d1 of the liquid crystal layer 40 corresponding to the first sub-groove 601a is greater than the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-groove 603a, that is, the thickness of the liquid crystal layer 40 corresponding to the red color resist block 311 is greater than the thickness of the liquid crystal layer 40 corresponding to the blue color resist block 313. Through the above settings, the relative light transmittance of red light can be improved, and then the light transmittance of the display panel 1 can be increased.

[0092] In other embodiments, as Figure 5 shown, Figure 5 the embodiment of Figure 4 differs from the embodiment in Figure 5 in the thickness d of the liquid crystal layer 40. As Figure 5 shown, the depth of the second sub-groove 602a is greater than the depth of the third sub-groove 603a. The thickness d2 of the liquid crystal layer 40 corresponding to the second sub-groove 602a is greater than the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-groove 603a, that is, the thickness of the liquid crystal layer 40 corresponding to the green color resist block 312 is greater than the thickness of the liquid crystal layer 40 corresponding to the blue color resist block 313. Through the above settings, the relative light transmittance of green light can be improved, and then the light transmittance of the display panel 1 can be increased.

[0093] In other embodiments, as Figure 4 shown, the depth of the first sub-groove 601a is greater than the depth of the third sub-groove 603a, the thickness d1 of the liquid crystal layer 40 corresponding to the first sub-groove 601a is greater than the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-groove 603a, the depth of the second sub-groove 602a is greater than the depth of the third sub-groove 603a, and the thickness d2 of the liquid crystal layer 40 corresponding to the second sub-groove 602a is greater than the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-groove 603a. That is, the thickness of the liquid crystal layer 40 corresponding to the red color resist block 311 is greater than the thickness of the liquid crystal layer 40 corresponding to the blue color resist block 313, and the thickness of the liquid crystal layer 40 corresponding to the green color resist block 312 is greater than the thickness of the liquid crystal layer 40 corresponding to the blue color resist block 313. Through the above settings, the relative light transmittance of red light and green light can be improved, and the light transmittance of the display panel 1 can be further increased.

[0094] As Figure 7 shown, a process flow chart of an insulating layer 60 provided in an exemplary embodiment of the present disclosure is shown. As Figure 8 shown, a schematic structural diagram of a halftone mask 90 applied in Figure 7 is shown. As Figure 7As shown in (a), a photoresist 81 is coated on the insulating layer 60, and the photoresist 81 is exposed through a half-tone mask 90 to form photoresists 81 of different thicknesses. As shown in (b), a portion of the photoresist 81 is removed, and an etching process is performed on the exposed area after the removal of the photoresist 81 to form a first sub-groove 601a. ​​As shown in (c), another portion of the photoresist 81 is removed, and an etching process is performed on the exposed area after the removal of the photoresist 81 to form a second sub-groove 602a. As shown in (d), the remaining photoresist 81 is removed to form a third sub-groove 603a.

[0095] It should be noted that the depth of the third sub-groove 603a is greater than or equal to 0. When the depth of the third sub-groove 603a is 0, the area corresponding to the blue color resist block 313 is not etched, and the surface of the insulating layer 60 corresponding to the blue color resist block 313 is the first surface.

[0096] It should be understood that when the insulating layer 60 is made of a photoresist material, the insulating layer 60 can be exposed and developed to remove unnecessary parts of the insulating layer 60 without the need for an etching process. The above arrangement can further simplify the manufacturing process of the display panel 1.

[0097] like Figure 8 As shown, the half-tone mask 90 has Figure 7 The five corresponding regions in the image are, from left to right, the first region 82, the second region 83, the third region 84, the first region 82 and the second region 83. Among them, the first region 82 corresponds to the third sub-groove 603a, the second region 83 corresponds to the first sub-groove 601a, and the third region 84 corresponds to the second sub-groove 602a. The first region 82 of the halftone mask 90 has a first transmittance, the second region 83 has a second transmittance, and the third region 84 has a third transmittance. The greater the transmittance, the greater the light flux irradiated to the photoresist 81 during exposure, and the deeper the etching depth. That is, Figure 8 In the embodiment, the transmittance of the second region 83 is greater than the transmittance of the third region 84, and the transmittance of the third region 84 is greater than the transmittance of the first region 82. The transmittance of each region of the halftone mask 90 can be adjusted according to the etching depth.

[0098] Optionally, the thickness d1 of the liquid crystal layer 40 corresponding to the first sub-groove 601a is greater than the first thickness, and the thickness d2 of the liquid crystal layer 40 corresponding to the second sub-groove 602a is greater than the first thickness. That is to say, the thickness of the liquid crystal layer 40 corresponding to the red color resist block 311 and the thickness of the liquid crystal layer 40 corresponding to the green color resist block 312 are both greater than the first thickness, thereby increasing the relative transmittance of the liquid crystal layer 40 corresponding to the red color resist block 311 and the green color resist block 312, and improving the transmittance of the display panel 1.

[0099] Optionally, the thickness d3 of the liquid crystal layer 40 corresponding to the third sub-slot 603a is equal to the first thickness. That is to say, the thickness of the liquid crystal layer 40 corresponding to the blue color resist block 313 is equal to the first thickness. As Figure 2 shown, since the relative light transmittance of the liquid crystal molecules to blue light is the largest at the first thickness, therefore, by setting the thickness of the liquid crystal layer 40 corresponding to the blue color resist block 313 to the first thickness, the light transmittance of the liquid crystal layer 40 at the blue color resist block 313 can be maximized.

[0100] In some embodiments, the thickness d of the liquid crystal layer 40 corresponding to the color resist blocks 31 of the same color may be different. As Figure 1 shown, the display panel 1 includes a bonding portion 53 for bonding connection with a bonding member. The bonding member includes a driving chip, a COF (Chip On Film), a flexible circuit board, etc. In the direction away from the bonding portion 53, the thickness d of the liquid crystal layer 40 corresponding to the color resist blocks 31 of the same color increases, that is, the thickness d of the liquid crystal layer 40 corresponding to the color resist blocks 31 away from the bonding portion 53 is greater than the thickness d of the liquid crystal layer 40 corresponding to the color resist blocks 31 close to the bonding portion 53. There will be a voltage drop during the process of the signal output from the bonding portion 53 being input to the pixel electrode 51 through the trace. The farther away from the bonding portion 53, the greater the voltage drop on the trace. Therefore, through the above setting, the relative light transmittance of the liquid crystal layer 40 corresponding to the color resist blocks 31 away from the bonding portion 53 can be increased, thereby compensating for the brightness loss caused by the trace voltage drop, making the display brightness of the sub-pixels away from the bonding portion 53 and the sub-pixels close to the bonding portion 53 consistent, and improving the brightness uniformity of the display panel 1.

[0101] Optionally, as Figure 1 and Figure 4 shown, a light-shielding portion 32 is provided between two adjacent color resist blocks 31. The light-shielding portion 32 overlaps with the edges of the adjacent color resist blocks 31 and also overlaps with the edges of the grooves 60a.

[0102] In some embodiments, the light-shielding portion 32 can be a light-shielding material. The light-shielding material can be made of resin with black pigment added, and the black pigment can be carbon black, etc.

[0103] In some other embodiments, the light-shielding portion 32 can be at least two stacked color resist blocks 31 of different colors. Since a color resist block 31 of one color can block the light of a color different from its own, by setting two color resist blocks 31 of different colors, all colors of light can be blocked from passing through. Through the above setting, the two stacked color resist blocks 31 of different colors can be used to replace the light-shielding portion 32 for light shielding, simplifying the manufacturing process of the color filter layer 30.

[0104] Optionally, as Figures 4 to 6 shown, the insulating layer 60 is in contact with the pixel electrode 51, and the depth of the groove 60a is less than or equal to the thickness of the insulating layer 60.

[0105] In some embodiments, the material of the insulating layer 60 is an organic insulating material. The organic insulating material can form a thicker insulating layer 60 compared to the inorganic insulating material. Forming grooves 60a with different depths on the thicker insulating layer 60 is easier to achieve, that is, it is easier to meet the requirements for the depth differentiation of the grooves 60a.

[0106] Optionally, the pixel electrodes 51 corresponding to the color resist blocks 31 of different colors have the same thickness.

[0107] The pixel electrodes 51 can be formed by Physical Vapor Deposition (PVD). The pixel electrodes 51 corresponding to the color resist blocks 31 of different colors have the same thickness, that is, within the allowable process error range, the pixel electrodes 51 corresponding to the color resist blocks 31 of different colors have the same thickness. Through the above settings, it is possible to avoid the pixel electrodes 51 affecting the thickness d of the liquid crystal layer 40.

[0108] According to the second aspect of the present application, as Figure 9 shown, a display terminal 2 is provided, including the above-mentioned display panel 1.

[0109] In this embodiment, as Figure 9 shown, the display terminal 2 includes a display panel 1 and a terminal body 3, and the display panel 1 and the terminal body 3 are combined into one.

[0110] In this embodiment, the display terminal 2 can be: a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any product or component with a display function.

[0111] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0112] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0113] The embodiments, implementation manners and related technical features of the present application can be combined and replaced with each other without conflict.

[0114] The above are only the preferred embodiments of the present application and do not impose any formal restrictions on the present application. However, any simple modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: include: a first substrate; a second substrate, opposite to and spaced from the first substrate; A color filter layer is disposed between the first substrate and the second substrate, and the color filter layer includes a plurality of color blocks of different colors; a liquid crystal layer, disposed between the first substrate and the second substrate, wherein when the thickness of the liquid crystal layer is configured to be a first thickness, the transmittance of the liquid crystal layer to red light, green light and blue light is the same; Wherein, the thickness of the liquid crystal layer corresponding to the color-resistance block of at least one color is greater than the first thickness.

2. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel electrode, disposed on a side of the first substrate close to the liquid crystal layer; An insulating layer, disposed between the first substrate and the pixel electrode, a surface of the insulating layer close to the pixel electrode is provided with a plurality of grooves, and one of the grooves is aligned with one of the color resist blocks; Wherein, the depth of the groove corresponding to the color-resistance block of at least one color is greater than the depth of the groove corresponding to the color-resistance block of another color.

3. The display panel according to claim 2, characterized in that: The plurality of color blocks of different colors include a red color block, a green color block and a blue color block, the plurality of grooves include a first sub-groove, a second sub-groove and a third sub-groove, the red color block corresponds to the first sub-groove, the green color block corresponds to the second sub-groove, and the blue color block corresponds to the third sub-groove; wherein the depth of the first sub-groove is greater than the depth of the third sub-groove, and the thickness of the liquid crystal layer corresponding to the first sub-groove is greater than the thickness of the liquid crystal layer corresponding to the third sub-groove; and / or, The depth of the second sub-groove is greater than the depth of the third sub-groove, and the thickness of the liquid crystal layer corresponding to the second sub-groove is greater than the thickness of the liquid crystal layer corresponding to the third sub-groove.

4. The display panel according to claim 3, characterized in that: The depth of the first sub-groove is greater than the depth of the second sub-groove, the thickness of the liquid crystal layer corresponding to the first sub-groove is greater than the thickness of the liquid crystal layer corresponding to the second sub-groove, the depth of the second sub-groove is greater than the depth of the third sub-groove, and the thickness of the liquid crystal layer corresponding to the second sub-groove is greater than the thickness of the liquid crystal layer corresponding to the third sub-groove.

5. The display panel according to claim 3, characterized in that: The thickness of the liquid crystal layer corresponding to the first sub-groove is greater than the first thickness, and the thickness of the liquid crystal layer corresponding to the second sub-groove is greater than the first thickness.

6. The display panel according to claim 5, characterized in that: The thickness of the liquid crystal layer corresponding to the third sub-groove is equal to the first thickness.

7. The display panel according to claim 2, characterized in that: A light shielding portion is disposed between two adjacent color-resistance blocks, the light shielding portion overlaps with the edge of the adjacent color-resistance block, and the light shielding portion overlaps with the edge of the groove.

8. The display panel according to claim 2, characterized in that: The insulating layer is arranged in contact with the pixel electrode, and the depth of the groove is less than or equal to the thickness of the insulating layer.

9. The display panel according to claim 8, characterized in that: The pixel electrodes corresponding to the color resist blocks of different colors have the same thickness.

10. A display terminal, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

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