Display panel and display device

Abstract

This application provides a display panel and display device, belonging to the field of electronic screen technology. The display panel includes: a protective cover plate, an optical adhesive layer, a first polarizer, a color filter substrate, an array substrate, and a second polarizer, which are stacked sequentially. The display panel has a neutral layer, which has zero strain when the display panel is subjected to bending force. The neutral layer is located at the position of the color filter substrate. This application optimizes and adjusts the thickness of each layer in the display panel so that the neutral layer is located at the position of the color filter substrate. This is a method of protecting the color filter substrate itself, rather than improving its deformation resistance. During the bending test of the display panel, it can reduce the bending deformation force on the color filter substrate, thereby reducing the risk of preferential breakage of the color filter substrate and improving the yield of the display panel.

Description

Technical Field

[0001] This application relates to the field of electronic screen technology, and in particular to a display panel and display device. Background Technology

[0002] Liquid crystal display (LCD) panels typically consist of key material layers such as a protective cover, optical adhesive layer, first polarizer, color filter substrate, array substrate, and second polarizer. Currently, because the color filter substrate is a multi-material composite structure (including black matrix BM, RGB color resist, protective layer OC, ITO electrodes, etc.), it becomes a weak point in terms of mechanical properties. Therefore, during bending tests (such as point pressure tests or drop tests), the breakage rate of the color filter substrate is significantly higher than that of other layers, thus affecting the yield rate of LCD panels. Utility Model Content

[0003] To address the problems of the prior art, this application provides a display panel and display device, which can solve the problem of low yield of display panels caused by high breakage rate of color filter substrate in the prior art. The technical solution is as follows:

[0004] On one hand, a display panel is provided, comprising: a protective cover plate, an optical adhesive layer, a first polarizer, a color filter substrate, an array substrate, and a second polarizer, which are sequentially stacked. The display panel has a neutral layer, the neutral layer having zero strain when the display panel is subjected to bending force, and the neutral layer being located at the position of the color filter substrate.

[0005] By optimizing and adjusting the thickness of each layer in the display panel, the neutral layer of the display panel is located at the position of the color filter substrate. This is a way to protect the color filter substrate itself, rather than to improve its resistance to deformation. During the bending test of the display panel, it can reduce the bending deformation force on the color filter substrate, thereby reducing the risk of the color filter substrate breaking first, and thus improving the yield of the display panel.

[0006] In some possible implementations, the neutral layer is located in the region between 1 / 3 and 2 / 3 of the thickness of the color filter substrate. This minimizes the bending deformation force on the color filter substrate, thereby reducing the risk of preferential breakage and improving the yield rate of the display panel.

[0007] In some possible implementations, the thickness of the color filter substrate is greater than the thickness of the array substrate.

[0008] In some possible implementations, the thickness of the protective cover is greater than the thickness of the array substrate, and the thickness of the color filter substrate is greater than the thickness of the protective cover.

[0009] In some possible implementations, the thickness of the color filter substrate is greater than 0.20 mm and less than 0.45 mm;

[0010] In some possible implementations, the thickness of the array substrate is greater than 0.12 mm and less than 0.25 mm.

[0011] In some possible implementations, the thickness of the protective cover is greater than 0.15 mm and less than 0.40 mm.

[0012] In some possible implementations, the color filter substrate includes a color resist layer comprising red, green, and blue color resists spaced apart. The thickness of the red color resist is greater than the thickness of the green color resist, and the thickness of the green color resist is greater than the thickness of the blue color resist.

[0013] By adjusting the thickness of the red, green, and blue color resist layers, and making the thickness of the red color resist greater than that of the green color resist, and the thickness of the green color resist greater than that of the blue color resist, the color shift problem caused by the increased thickness of the color filter substrate can be compensated.

[0014] In some possible implementations, the thickness ratio of the red color filter, the green color filter, and the blue color filter is (1.9~1.7):(1.6~1.4):(1.3~1.1). This maximizes the compensation for color shift issues caused by the increased thickness of the color filter substrate 40.

[0015] In some possible implementations, the color filter substrate further includes a substrate, a protective layer, a common electrode layer, and a black matrix. The substrate, the color resist layer, the protective cover, and the common electrode layer are sequentially stacked between the first polarizer and the array substrate, with the common electrode layer disposed adjacent to the array substrate. The black matrix has a first transparent region corresponding to the red color resist, a second transparent region corresponding to the green color resist, and a third transparent region corresponding to the blue color resist; at least a portion of the red color resist is exposed through the first transparent region, at least a portion of the green color resist is exposed through the second transparent region, and at least a portion of the blue color resist is exposed through the third transparent region.

[0016] In some possible implementations, the surface of the protective cover facing away from the optical adhesive layer is defined as a reference layer, and the distance between the neutral layer and the reference layer is:

[0017] ;

[0018] Wherein, 1 to n are the layer numbers corresponding to each layer in the display panel. Let be the thickness of the i-th layer. The equivalent modulus of the i-th layer after bending. is the distance between the center of the i-th layer and the reference layer.

[0019] Using the above formula, and based on the material and thickness of each layer in the display panel, the distance between the surface layer and the reference layer of the display panel can be quickly obtained. This allows for rapid adjustment of the thickness of each layer, ensuring the neutral layer of the display panel is positioned where the color filter substrate is located, thereby improving the manufacturing efficiency of the display panel. Furthermore, during the display panel bending test, the bending deformation force on the color filter substrate can be reduced, thus lowering the risk of preferential breakage of the color filter substrate and improving the yield rate of the display panel.

[0020] On the other hand, a display device is provided, comprising: a backlight module and a display panel located on the light-emitting side of the backlight module. The display panel includes any of the display panels described above. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of a display panel bending under stress during a bending test, provided in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the structure of a color filter substrate for a display panel provided in an embodiment of this application. Detailed Implementation

[0025] To make the purpose, technical solution, and advantages of this application clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] This application provides a display panel that can serve as the display panel for a display device. Here, the display device can be an electronic device, such as a television, mobile phone, iPad, laptop, or vehicle-mounted display. Of course, this display panel can also serve as the display panel for other devices, and this application does not limit its use in this regard.

[0027] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. Figure 2 This is a schematic diagram of a display panel bending under stress during a bending test, provided in an embodiment of this application. Figure 1 The arrows in the diagram indicate the direction of force applied to the display panel during the bending test. The display panel 000 is a thin-film structure and may include: a protective cover plate 10, an optical adhesive layer 20, a first polarizer 30, a color filter substrate 40, an array substrate 50, and a second polarizer 60, which are stacked sequentially.

[0028] The protective cover 10 can be a glass cover (CG) and is made of high-strength glass material. In the display panel 000, the protective cover 10 mainly serves to protect the display panel screen (such as preventing impact, scratches, fingerprints, and oil stains) and enhance the display effect (such as increasing light transmittance, reducing reflection, and reducing glare).

[0029] The optical adhesive layer 20 can be made of optically clear adhesive (OCA) to ensure its light transmittance. In the display panel 000, the optical adhesive layer 20 is mainly used to connect the protective cover plate 10 and the first polarizer 30.

[0030] The first polarizer 30 and the second polarizer 60 are polarizers (abbreviated as POL). The first polarizer 30 is located on the side of the color filter substrate 40 away from the array substrate 50, and is mainly responsible for converting the natural light emitted by the backlight into linearly polarized light. The second polarizer 60 is located on the side of the array substrate 50 away from the color filter substrate 40. The polarization direction of the second polarizer 60 is perpendicular to that of the first polarizer 30, and it is mainly used to further filter and adjust the light transmitted through the array substrate 50.

[0031] The color filter substrate 40 is one of the core layers in the display panel 000. The color filter substrate 40 integrates color filters (CF). When light emitted from the backlight passes through the first polarizer 30 and is incident on the color filter substrate 40, only light of a specific color can pass through the color filter substrate 40. Furthermore, by using different combinations of color filters, various colors can be formed, thereby realizing the color display function of the display panel 000 and providing the display panel 000 with three primary color pixels.

[0032] The array substrate 50 is also one of the core layers in the display panel 000. The array substrate 50 integrates sub-pixels arranged in an array. Each sub-pixel may include a transistor and a pixel electrode, and a liquid crystal layer may also be present between the array substrate 50 and the color filter substrate 40. Here, the transistor acts as a control switch for each sub-pixel, controlling the charging state of the pixel electrode, thereby creating an electric field between the pixel electrode and the common electrode layer. The liquid crystal molecules in the liquid crystal layer can be deflected under the influence of this electric field, thus adjusting the deflection direction of the linearly polarized light incident on the liquid crystal layer, thereby achieving grayscale adjustment for each sub-pixel. It should be noted that the common electrode layer can be integrated within the array substrate 50 or within the color filter substrate 40. Subsequent embodiments will be described using the example of the common electrode layer being integrated within the color filter substrate 40.

[0033] The display panel 000 has a neutral layer, which has zero strain when the display panel 000 is bent, and the neutral layer is located at the location of the color filter substrate 40. That is, the neutral layer can be located at any position within the thickness range of the color filter substrate 40.

[0034] It should be noted that in the bending test of the thin film structure, the neutral layer is a transition layer that is neither stretched nor compressed when the thin film structure is bent (pure bending, without shear deformation). That is, the strain of the neutral layer is 0 during the bending process of the thin film structure. Furthermore, during the test, the display panel 000 satisfies the following conditions: the display panel 000 is in a pure bending state (without shear deformation) and satisfies the plane section assumption; the bending strain in the display panel 000 exhibits a linear distribution along its thickness direction; and the elastic properties of each layer of material in the display panel 000 are isotropic.

[0035] Currently, as liquid crystal display (LCD) panels continue to evolve towards thinner and lighter designs, the physical thinning of key material layers in LCD panels (including protective cover plates, optical adhesive layers, first polarizers, color filter substrates, array substrates, and second polarizers) is approaching material limits. Furthermore, when the ratio of color filter substrate thickness to array substrate thickness is ≤0.2mm, the risk of red-blue spots (color shift caused by external pressure) surges, indicating that simple geometric thinning can no longer meet mechanical reliability requirements.

[0036] The color filter substrate, due to its multi-material composite structure (including a black matrix BM, RGB color resist, protective layer OC, and ITO electrodes), becomes a weak point in terms of mechanical strength. In bending tests (such as point pressure tests or drop tests), the breakage rate of the color filter substrate is significantly higher than that of other layers, leading to functional defects in the liquid crystal display panel.

[0037] In related technologies, the neutral layer of the liquid crystal display panel is located at the position of the optically transparent adhesive. To reduce the risk of color filter substrate breakage and improve product yield, the common practice is to enhance the deformation resistance of the color filter substrate itself, such as optimizing the material formulation of the color filter substrate, improving the curing process of the color filter substrate, and optimizing the structural design of the black matrix (BM) of the color filter substrate. These methods require frequent verification through numerous experiments, which is time-consuming and labor-intensive.

[0038] In this embodiment, the thickness of each layer in the display panel 000 is optimized and adjusted so that the neutral layer of the display panel 000 is located at the position of the color filter substrate 40. This is a way to protect the color filter substrate 40 itself, rather than to improve the deformation resistance of the color filter substrate 40 itself. During the bending test of the display panel 000 (such as the point pressure test or drop test), the bending deformation force on the color filter substrate 40 can be significantly reduced, thereby reducing the risk of the color filter substrate 40 breaking preferentially, thereby improving the yield of the display panel 000.

[0039] In one possible implementation, the neutral layer of the display panel 000 is located in the region between 1 / 3 and 2 / 3 of the thickness of the color filter substrate 40. That is, in the thickness direction of the color filter substrate 40, the neutral layer of the display panel 000 is located in the central region of the color filter substrate 40.

[0040] For example, the neutral layer of the display panel 000 may be located at 1 / 3 thickness position, 1 / 3 thickness position, 5 / 12 thickness position, 1 / 2 thickness position, 7 / 12 thickness position, 2 / 3 thickness position, etc. of the color filter substrate 40.

[0041] Since the neutral layer of the display panel 000 is a transition layer that neither stretches nor compresses when the display panel 000 is bent (pure bending, without shear deformation), the bending deformation force near the neutral layer is necessarily less than that far from the neutral layer. Therefore, in this embodiment, by optimizing and adjusting the thickness of each layer in the display panel 000, the neutral layer of the display panel 000 is positioned in the region between 1 / 3 and 2 / 3 of the thickness of the color filter substrate 40. This minimizes the bending deformation force on the color filter substrate 40, thereby reducing the risk of preferential breakage of the color filter substrate 40 and improving the yield of the display panel 000.

[0042] In one possible implementation, the thickness of the color filter substrate 40 is greater than the thickness of the array substrate 50.

[0043] In related technologies, the color filter substrate and the array substrate are typically designed with symmetrical thicknesses, meaning the thickness of the color filter substrate is equal to the thickness of the array substrate. However, in this application, the color filter substrate 40 and the array substrate 50 employ an asymmetrical thickness design. Without changing the overall thickness of the display panel 000 or the thicknesses of other layers, the thickness of the color filter substrate 40 can be increased while the thickness of the array substrate 50 can be decreased, making the thickness of the color filter substrate 40 greater than that of the array substrate 50. This improves the deformation resistance of the color filter substrate 40, further reducing the risk of preferential breakage and thus increasing the yield of the display panel 000.

[0044] It should be noted that after etching the array substrate 50, local annealing can be performed on the array substrate 50 to repair microcracks that may be generated during the etching process, thereby reducing the risk of line breakage and decreased electron mobility on the array substrate 50.

[0045] In related technologies, the gate insulating layer material in the array substrate is usually SiO2. However, in this application, in order to reduce the channel electron mobility loss, the gate insulating layer material of the array substrate 50 is an insulating material with a high dielectric constant that is higher than that of SiO2, such as HfO2, Al2O3, ZrO2, etc.

[0046] In one possible implementation, the thickness of the protective cover plate 10 is greater than the thickness of the array substrate 50, and the thickness of the color filter substrate 40 is greater than the thickness of the protective cover plate 10.

[0047] In related technologies, the thickness of the protective cover is usually greater than the thickness of the array substrate and the color filter substrate, so that the neutral layer of the display panel is located at the position of the optical adhesive layer 20.

[0048] In this embodiment, since the protective cover plate 10 typically has a high modulus and a large thickness weight, it is thinned without changing the overall thickness of the display panel 000. The thickness of the color filter substrate 40 is greater than the thickness of the protective cover plate 10, and the thickness of the protective cover plate 10 is greater than the thickness of the array substrate 50. This allows for easy adjustment of the neutral layer of the display panel 000 to the location of the color filter substrate 40, thereby reducing the risk of preferential breakage of the color filter substrate 40 and improving the yield of the display panel 000. Furthermore, to improve the mechanical strength of the protective cover plate 10, it undergoes a secondary strengthening surface ion exchange process during its molding.

[0049] In one possible implementation, the thickness of the color filter substrate 40 can be greater than 0.20 mm and less than 0.45 mm. By setting the thickness of the color filter substrate 40 within the above range, the deformation resistance of the color filter substrate 40 itself can be guaranteed.

[0050] For example, the thickness of the color filter substrate 40 can be 0.22mm, 0.24mm, 0.25mm, 0.28mm, 0.29mm, 0.30mm, 0.32mm, 0.34mm, 0.35mm, 0.36mm, 0.38mm, 0.40mm, 0.42mm, 0.44mm, etc.

[0051] In one possible implementation, the thickness of the array substrate 50 is greater than 0.12 mm and less than 0.25 mm. By setting the thickness of the array substrate 50 within the above range, the deformation resistance of the array substrate 50 itself can be guaranteed. For example, the thickness of the array substrate 50 can be 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, etc.

[0052] In one possible implementation, the thickness of the protective cover 10 is greater than 0.15 mm and less than 0.40 mm. By setting the thickness of the protective cover 10 within the above range, the deformation resistance of the protective cover 10 itself can be guaranteed. For example, the thickness of the protective cover 10 can be 0.18 mm, 0.20 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.30 mm, 0.32 mm, 0.35 mm, 0.38 mm, 0.39 mm, etc.

[0053] In one possible implementation, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of a color filter substrate for a display panel provided in an embodiment of this application. The color filter substrate 40 includes a color resist layer 41, which includes a red color resist 411, a green color resist 412, and a blue color resist 413 disposed at intervals. The thickness of the red color resist 411 is greater than the thickness of the green color resist 412, and the thickness of the green color resist 412 is greater than the thickness of the blue color resist 413.

[0054] In this embodiment, by adjusting the thickness of the red light color resist 411, green light color resist 412 and blue light color resist 413 of the color resist layer 41, and making the thickness of the red light color resist 411 greater than the thickness of the green light color resist 412 and the thickness of the green light color resist 412 greater than the thickness of the blue light color resist 413, the color shift problem caused by the increased thickness of the color filter substrate 40 can be compensated.

[0055] In one possible implementation, the thickness ratio of the red light resist 411, green light resist 412, and blue light resist 413 in the color filter substrate 40 can be 1.9~1.7:1.6~1.4:1.3~1.1. For example, the thickness ratio of the red light resist 411, green light resist 412, and blue light resist 413 can be 1.8:1.5:1.2.

[0056] In this embodiment, by setting the thickness ratio of red light color resist 411, green light color resist 412 and blue light color resist 413 within the above range, the color shift problem caused by the increased thickness of the color filter substrate 40 can be compensated to the maximum extent.

[0057] Furthermore, in this application, to improve the light transmittance of the display panel 000, the optical adhesive layer 20 can be made of a highly transparent optical adhesive material. The transparent optical adhesive material can be an acrylic resin, epoxy resin, an acrylic-epoxy mixed resin, or a silicone resin.

[0058] In one possible implementation, such as Figure 3 As shown, the color filter substrate 40 further includes a substrate 42, a protective layer 43, a common electrode layer 44, and a black matrix 45. The substrate 42, color resist layer 41, protective layer 43, and common electrode layer 44 are sequentially stacked between the first polarizer 30 and the array substrate 50, with the common electrode layer 44 disposed adjacent to the array substrate 50. To prevent color crosstalk, the black matrix 45 has a first light-transmitting area corresponding to the red color resist 411, a second light-transmitting area corresponding to the green color resist 412, and a third light-transmitting area corresponding to the blue color resist 413. At least a portion of the red color resist 411 is exposed through the first light-transmitting area, at least a portion of the green color resist 412 is exposed through the second light-transmitting area, and at least a portion of the blue color resist 413 is exposed through the third light-transmitting area.

[0059] In one possible implementation, the display panel 000 can be formed as a flat structure, or the display panel 000 can be formed as a curved structure.

[0060] In one possible implementation, such as Figure 1 and Figure 2 As shown, the surface of the protective cover 10 facing away from the optical adhesive layer 20 (this surface is also the surface where pressure is applied during testing) can be defined as the reference layer. The distance between the neutral layer and the reference layer is... That is, the distance between the neutral layer and the reference layer. This can characterize the specific location of the neutral layer in the display panel 000.

[0061] The expression can be obtained through the following formulas (1) and (2).

[0062] Formula (1);

[0063] Formula (2);

[0064] Using formulas (1) and (2), we obtain:

[0065] Formula (3).

[0066] In formula (1), For the strain of the reference layer, Let be the bending radius of display panel 000, and 1 to n be the layer numbers corresponding to each layer in display panel 000. Let be the thickness of the i-th layer. The equivalent modulus of the i-th layer after bending. Let be the distance between the center of the i-th layer and the reference layer. In formula (2), Let Poisson's ratio be the material of the i-th layer. Let be the elastic modulus of the material in the i-th layer.

[0067] Therefore, using the above formula (3), and based on the material and thickness of each layer in the display panel 000, the distance between the reference layer and the reference layer of the display panel 000 can be quickly obtained. (That is, the specific location of the neutral layer in the display panel 000), which allows for rapid adjustment of the thickness of each layer so that the neutral layer of the display panel 000 is located at the position of the color filter substrate 40, thereby improving the manufacturing efficiency of the display panel. Furthermore, during bending tests of the display panel 000 (such as point pressure tests or drop tests), the bending deformation force on the color filter substrate 40 can be reduced, thereby reducing the risk of preferential breakage of the color filter substrate 40 and thus improving the yield of the display panel 000.

[0068] Finally, in order to make the purpose, technical solution and beneficial effects of this application clearer, the following describes this application in further detail with reference to the thickness and material parameters of each layer in the display panel 000. However, the specific embodiments described are only used to explain this application and are not intended to limit this application.

[0069] Example 1: The parameters in formula (3) are shown in Table 1 below, where.

[0070]

[0071] Table 1

[0072] Example 2: The parameters in formula (3) are shown in Table 2 below.

[0073]

[0074] Table 2

[0075] Example 3: The parameters in formula (3) are shown in Table 3 below:

[0076]

[0077] Table 3

[0078] As can be seen from Tables 1-3 above, the position data of the neutral layer of the display panel 000 is greater than the bottom position data of the color filter substrate 40 and less than the top position data of the color filter substrate 40. Therefore, the neutral layer of the display panel 000 is located at the position of the color filter substrate 40.

[0079] Therefore, in this application, by optimizing and adjusting the thickness of each layer in the display panel 000, the neutral layer of the display panel 000 is adjusted to the position where the color filter substrate 40 is located. During the bending test of the display panel 000, the bending deformation force on the color filter substrate 40 can be reduced, thereby reducing the risk of the color filter substrate 40 cracking preferentially, and thus improving the yield of the display panel 000.

[0080] This application also provides a display device, which includes a backlight module and a display panel located on the light-emitting side of the backlight module. The display panel includes the display panel 000 described in the above embodiments.

[0081] Backlight modules can be either direct-lit or edge-lit. These backlight modules provide light to the display panel, enabling it to display images.

[0082] The display device can be an electronic device, such as a television, mobile phone, iPad, laptop, or in-vehicle display. Of course, the display device can also be used as a display device for other devices, and this application does not limit this.

[0083] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0084] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: The protective cover plate (10), optical adhesive layer (20), first polarizer (30), color filter substrate (40), array substrate (50) and second polarizer (60) are stacked in sequence. The display panel has a neutral layer, which has a strain of 0 when the display panel is bent under stress, and the neutral layer is located at the position of the color filter substrate (40).

2. The display panel according to claim 1, characterized in that, The neutral layer is located in the region between 1 / 3 and 2 / 3 of the thickness of the color filter substrate (40).

3. The display panel according to claim 1, characterized in that, The thickness of the color filter substrate (40) is greater than the thickness of the array substrate (50).

4. The display panel according to claim 3, characterized in that, The thickness of the protective cover plate (10) is greater than the thickness of the array substrate (50), and the thickness of the color filter substrate (40) is greater than the thickness of the protective cover plate (10).

5. The display panel according to claim 4, characterized in that, The thickness of the color filter substrate (40) is greater than 0.20 mm and less than 0.45 mm; And / or, the thickness of the array substrate (50) is greater than 0.12 mm and less than 0.25 mm; And / or, the thickness of the protective cover (10) is greater than 0.15 mm and less than 0.40 mm.

6. The display panel according to claim 1, characterized in that, The color filter substrate (40) includes a color resist layer (41), which includes a red color resist (411), a green color resist (412) and a blue color resist (413) disposed at intervals. The thickness of the red light color resist (411) is greater than the thickness of the green light color resist (412), and the thickness of the green light color resist (412) is greater than the thickness of the blue light color resist (413).

7. The display panel according to claim 6, characterized in that, The thickness ratio of the red light color resist (411), the green light color resist (412), and the blue light color resist (413) is (1.9~1.7):(1.6~1.4):(1.3~1.1).

8. The display panel according to claim 6, characterized in that, The color filter substrate (40) further includes a substrate (42), a protective layer (43), a common electrode layer (44), and a black matrix (45). The substrate (42), the color resist layer (41), the protective layer (43) and the common electrode layer (44) are stacked sequentially between the first polarizer (30) and the array substrate (50), and the common electrode layer (44) is disposed adjacent to the array substrate (50). The black matrix (45) has a first light-transmitting area corresponding to the red color resist (411), a second light-transmitting area corresponding to the green color resist (412), and a third light-transmitting area corresponding to the blue color resist (413); at least a portion of the red color resist (411) is exposed through the first light-transmitting area, at least a portion of the green color resist (412) is exposed through the second light-transmitting area, and at least a portion of the blue color resist (413) is exposed through the third light-transmitting area.

9. The display panel according to any one of claims 1-8, characterized in that, The surface of the protective cover plate (10) facing away from the optical adhesive layer (20) is defined as the reference layer, and the distance between the neutral layer and the reference layer is: ； Wherein, 1 to n are the layer numbers corresponding to each layer in the display panel. Let be the thickness of the i-th layer. The equivalent modulus of the i-th layer after bending. is the distance between the center of the i-th layer and the reference layer.

10. A display device, characterized in that, include: A backlight module, and a display panel located on the light-emitting side of the backlight module; the display panel includes the display panel according to any one of claims 1-9.

Images