Display panel and display device

Abstract

The utility model provides a display panel and a display device, relates to the technical field of display, and solves the problem of light leakage at four corners of a curved surface display product during display due to bending stress in the bending process of the curved surface display product. The display panel comprises a liquid crystal box, a first polaroid and a second polaroid. The liquid crystal box comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is located between the first substrate and the second substrate. The first polaroid is located on the side, back on to the liquid crystal box, of the first substrate. The second polaroid is located on the side, back on to the liquid crystal box, of the second substrate. The thickness of the second polaroid is greater than that of the first polaroid; and the display panel is a curved display panel which is bent towards the second polaroid.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the continuous development of display technology, the application fields of display products are becoming more and more extensive. In order to meet the needs of different application scenarios, the demand for curved display products is increasing. Since curved display products are subjected to bending stress during the bending process, and this bending stress affects the deflection of the liquid crystal in the curved display products, it will cause obvious light leakage in the four corners of the curved display products during display, affecting the picture quality of the curved display and the contrast of the display products. Utility Model Content

[0003] The utility model aims to provide a display panel and a display device, which are used to solve the problem of light leakage at four corners of a curved display product during display due to bending stress in the process of bending the curved display product.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A first aspect of the present invention provides a display panel, comprising:

[0006] A liquid crystal box, the liquid crystal box comprising a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate;

[0007] a first polarizer, the first polarizer being located on a side of the first substrate facing away from the liquid crystal cell;

[0008] a second polarizer, the second polarizer being located on a side of the second substrate facing away from the liquid crystal cell;

[0009] The thickness of the second polarizer is greater than that of the first polarizer; and the display panel is formed as a curved display panel that is curved toward the second polarizer.

[0010] Optionally, the first polarizer includes: a first adhesive layer, a first inner protective layer, a first polarizing layer and a first outer protective layer which are sequentially stacked in a direction away from the liquid crystal box;

[0011] The second polarizer comprises: a second adhesive layer, a second inner protective layer, a second polarizing layer and a second outer protective layer which are sequentially stacked in a direction away from the liquid crystal cell;

[0012] The thickness of the second adhesive layer is greater than the thickness of the first adhesive layer; and / or,

[0013] The thickness of the second inner protective layer is greater than the thickness of the first inner protective layer; and / or,

[0014] The thickness of the second outer protective layer is greater than the thickness of the first outer protective layer.

[0015] Optionally, the first outer protective layer includes a PET layer, a TAC layer or a PMMA layer.

[0016] Optionally, the first inner protective layer includes a TAC layer; and the first polarizing layer includes a PVA layer.

[0017] Optionally, the second outer protective layer includes a PET layer; the second inner protective layer includes a TAC layer; and the second polarizing layer includes a PVA layer.

[0018] Optionally, the thickness of the first adhesive layer is the same as the thickness of the second adhesive layer; and / or, the thickness of the first inner protective layer is the same as the thickness of the second inner protective layer; and / or, the thickness of the first polarizing layer is the same as the thickness of the second polarizing layer.

[0019] Optionally, a thickness d1 of the first polarizer and a thickness d2 of the second polarizer satisfy the following relationship: (1 / 6)d2≤d1≤(5 / 6)d2.

[0020] Optionally, the thickness d11 of the first adhesive layer satisfies: 15 μm≤d11≤25 μm;

[0021] The thickness d12 of the first inner protective layer satisfies: 35 μm≤d12≤45 μm;

[0022] The thickness d13 of the first polarizing layer satisfies: 15 μm≤d13≤25 μm;

[0023] The thickness d14 of the first outer protective layer satisfies: 35 μm≤d14≤65 μm.

[0024] Optionally, the thickness d21 of the second adhesive layer satisfies: 15 μm≤d21≤25 μm;

[0025] The thickness d22 of the second inner protective layer satisfies: 35 μm≤d22≤45 μm;

[0026] The thickness d23 of the second polarizing layer satisfies: 15 μm≤d23≤25 μm;

[0027] The thickness d24 of the second outer protective layer satisfies: 75 μm≤d24≤90 μm.

[0028] Optionally, the thickness d1 of the first polarizer satisfies: 115 μm≤d1≤145 μm;

[0029] The thickness d2 of the second polarizer satisfies: 160 μm≤d2≤170 μm.

[0030] Optionally, the first substrate includes an array substrate, the array substrate includes a first substrate, and a thin film transistor array layer disposed on the first substrate, the thin film transistor array layer is located between the first substrate and the liquid crystal layer;

[0031] The second substrate includes a color film substrate, which includes a second substrate and a color film structure arranged on the second substrate, the color film structure includes a stacked black matrix layer and a color film layer, and the color film structure is located between the second substrate and the liquid crystal layer.

[0032] Optionally, the second substrate includes an array substrate, the array substrate includes a second substrate, and a thin film transistor array layer disposed on the second substrate, the thin film transistor array layer is located between the second substrate and the liquid crystal layer;

[0033] The first substrate comprises a color film substrate, the color film substrate comprises a first substrate, and a color film structure arranged on the first substrate, the color film structure comprises a stacked black matrix layer and a color film layer, and the color film structure is located between the first substrate and the liquid crystal layer.

[0034] Based on the technical solution of the above display panel, it can be known that a second aspect of the present invention provides a display device, comprising the above display panel.

[0035] In the technical solution provided by the utility model, the first polarizer is arranged on the side where the first substrate of the liquid crystal box is located, and the second polarizer is arranged on the side where the second substrate of the liquid crystal box is located, and the thickness of the second polarizer is set to be greater than the thickness of the first polarizer; this arrangement makes it possible for the shrinkage rate of the second polarizer to be greater than the shrinkage rate of the first polarizer after the display panel is subjected to an aging process, so that the display panel gradually presents a natural bending state during the aging process, effectively reducing the bending stress, and reducing the accumulation of the bending stress at the four corners of the liquid crystal box, thereby reducing the influence of the bending stress on the liquid crystal layer, and improving the four-corner light leakage phenomenon of the display panel under the L0 Patten.

[0036] In the technical solution provided by the utility model, by setting the thickness of the second polarizer to be greater than the thickness of the first polarizer, the problem of light leakage at the four corners of the curved display product caused by bending stress during the bending process is solved, thereby ensuring the picture quality and contrast of the curved display. The technical solution design solution provided by the utility model is simple to implement and can better save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0038] Figure 1 A schematic diagram of the contraction of the first polarizer and the second polarizer in the display panel provided by the embodiment of the utility model;

[0039] Figure 2 A schematic diagram of a display panel in a bowl-tilted state provided by an embodiment of the utility model;

[0040] Figure 3 A schematic diagram of a display panel in a warped state provided by an embodiment of the utility model;

[0041] Figure 4 A schematic diagram of each film layer of the first polarizer provided in an embodiment of the utility model;

[0042] Figure 5 A schematic diagram of each film layer of the second polarizer provided in an embodiment of the utility model;

[0043] Figure 6 A front view of a display panel provided by an embodiment of the utility model;

[0044] Figure 7 A side view of a display panel provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0045] In order to further illustrate the display panel and the display device provided by the embodiments of the present invention, a detailed description is given below in conjunction with the accompanying drawings.

[0046] See also Figures 1 to 3 , Figure 6 and Figure 7 The present utility model embodiment provides a display panel 10, comprising:

[0047] A liquid crystal box 101, wherein the liquid crystal box 101 comprises a first substrate and a second substrate which are arranged opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate;

[0048] A first polarizer 102, wherein the first polarizer 102 is located on a side of the first substrate facing away from the liquid crystal cell 101;

[0049] A second polarizer 103, wherein the second polarizer 103 is located on a side of the second substrate facing away from the liquid crystal cell 101;

[0050] The thickness of the second polarizer 103 is greater than that of the first polarizer 102 ; the display panel 10 is formed as a curved display panel that is curved toward the second polarizer 103 .

[0051] For example, Figure 2 The side where the second polarizer 103 is located is the light emitting side of the display panel 10 .

[0052] Exemplarily, the first substrate included in the first substrate and the second substrate included in the second substrate are glass substrates, but are not limited thereto.

[0053] Exemplarily, the display panel 10 includes a liquid crystal display panel, and the working principle of the liquid crystal display panel 10 relies on controlling the polarization state of the transmitted light to generate an image. The first polarizer 102 and the second polarizer 103 are combined with the liquid crystal layer for modulation, which can achieve precise control of the brightness of each pixel and enhance the contrast and clarity of the picture.

[0054] like Figure 2 As shown, exemplarily, the display panel 10 includes a curved display panel, and the display panel 10 is formed in a bowl-warped state bent toward the second polarizer 103. The bowl-warped state includes two opposite sides of the display panel warping toward the middle.

[0055] It should be noted that the first polarizer 102 and the second polarizer 103 are respectively attached to the two sides of the liquid crystal box 101. Therefore, the shrinkage of the first polarizer 102 and the second polarizer 103 will affect the overall curved surface state of the display panel 10. When the thickness of the second polarizer 103 is set to be greater than the thickness of the first polarizer 102, after the aging process, the shrinkage rate of the second polarizer 103 is greater than the shrinkage rate of the first polarizer 102, so that the display panel 10 is bent toward the second polarizer 103 as a whole. Figure 2 As shown in FIG. 1 , it is shown that the display panel 10 is in a bowl-shaped state. Figure 3 As shown, it is shown that the display panel 10 is in a warped state.

[0056] like Figure 1 As shown, the first polarizer 102 and the second polarizer 103 are subjected to the following conditions during the aging process: Figure 1The shrinkage force shown shrinks, and by setting the thickness of the second polarizer 103 to be greater than the thickness of the first polarizer 102, the shrinkage force of the second polarizer 103 is greater than the shrinkage force of the first polarizer 102, so that the shrinkage torque of the second polarizer 103 is greater than the shrinkage torque of the first polarizer 102, and the torque represents the ability of a force to produce a rotational effect on an object. Therefore, the ability of the second polarizer 103 to shrink and drive the liquid crystal box 101 to bend is greater than the ability of the first polarizer 102 to shrink and drive the liquid crystal box 101 to bend. The first polarizer 102 and the second polarizer 103 cause the liquid crystal box 101 to bend during the contraction process, and the force arm generated on the liquid crystal box 101 is as follows: Figure 1 shown.

[0057] In more detail, when the display panel 10 is subjected to an aging process, the first substrate and the second substrate included in the liquid crystal box 101 in the display panel 10 will bend, and the bending causes bending stress to accumulate at the four corners of the liquid crystal box 101. The first substrate and the second substrate exert greater pressure on the liquid crystal layer in the liquid crystal box 101, thereby causing abnormal deflection of the liquid crystal molecules. When displaying the L0 Patten (0 grayscale image), light leakage occurs at the four corners.

[0058] According to the specific structure of the above-mentioned display panel 10, it can be known that in the display panel 10 provided by the embodiment of the utility model, the first polarizer 102 is arranged on the side where the first substrate of the liquid crystal box 101 is located, and the second polarizer 103 is arranged on the side where the second substrate of the liquid crystal box 101 is located, and the thickness of the second polarizer 103 is set to be greater than the thickness of the first polarizer 102; this arrangement makes it possible that after the display panel 10 is subjected to an aging process, the shrinkage rate of the second polarizer 103 is greater than the shrinkage rate of the first polarizer 102, so that the display panel 10 gradually presents a naturally curved state during the aging process, effectively reducing the bending stress, and reducing the concentration of the bending stress at the four corners of the liquid crystal box 101, thereby reducing the influence of the bending stress on the liquid crystal layer, and improving the four-corner light leakage phenomenon of the display panel 10 under the L0 Patten.

[0059] In the display panel 10 provided by the embodiment of the utility model, by setting the thickness of the second polarizer 103 to be greater than the thickness of the first polarizer 102, the problem of light leakage at the four corners of the curved display product during display due to bending stress during the bending process of the curved display product is solved, thereby ensuring the image quality and contrast of the curved display. The display panel 10 design scheme provided by the embodiment of the utility model is simple to implement and can better save costs.

[0060] like Figure 4 and Figure 5 As shown, in some embodiments, the first polarizer 102 includes: a first adhesive layer 1021, a first inner protective layer 1022, a first polarizing layer 1023 and a first outer protective layer 1024 which are sequentially stacked in a direction away from the liquid crystal cell 101;

[0061] The second polarizer 103 includes: a second adhesive layer 1031, a second inner protective layer 1032, a second polarizing layer 1033 and a second outer protective layer 1034 which are sequentially stacked in a direction away from the liquid crystal cell 101;

[0062] The thickness of the second adhesive layer 1031 is greater than the thickness of the first adhesive layer 1021; and / or the thickness of the second inner protective layer 1032 is greater than the thickness of the first inner protective layer 1022; and / or the thickness of the second outer protective layer 1034 is greater than the thickness of the first outer protective layer 1024.

[0063] The overall thickness of the second polarizer 103 can be made greater than the overall thickness of the first polarizer 102 by setting the thickness of the second adhesive layer 1031 to be greater than the thickness of the first adhesive layer 1021; and / or the thickness of the second inner protective layer 1032 to be greater than the thickness of the first inner protective layer 1022; and / or the thickness of the second outer protective layer 1034 to be greater than the thickness of the first outer protective layer 1024.

[0064] like Figure 4 As shown, in some embodiments, the first outer protective layer 1024 includes a PET layer (polyethylene terephthalate layer), a TAC layer (triacetyl cellulose layer) or a PMMA layer (polymethyl methacrylate layer).

[0065] The PET layer can provide mechanical strength and environmental stability for the first polarizer 102 . The PET layer can prevent moisture and gas penetration, and provide physical support for the first polarizer 102 .

[0066] The TAC layer has excellent optical transparency, UV resistance and mechanical strength, and can effectively protect the first polarizing layer 1023 from environmental influences, thereby increasing the durability and stability of the first polarizer 102 .

[0067] The PMMA layer is also called organic glass or acrylic, which is a transparent plastic. When the PMMA layer is used for the first polarizer 102, it can provide high light transmittance and excellent weather resistance, and has considerable hardness and impact resistance, which helps to improve the overall durability and optical performance of the first polarizer 102.

[0068] like Figure 4As shown, in some embodiments, the first inner protective layer 1022 includes a TAC layer; and the first polarizing layer 1023 includes a PVA layer (polyvinyl alcohol layer).

[0069] The first adhesive layer 1021 may be a pressure sensitive adhesive layer, which is used to fix the first polarizer 102 to the surface of the liquid crystal cell 101. It provides a strong, durable but easy to apply and remove adhesive.

[0070] The first polarizing layer 1023 is the core part of the first polarizer 102 and is responsible for polarizing light. This layer filters and adjusts the polarization direction of light so that the display panel 10 can accurately display images when powered on.

[0071] like Figure 5 As shown, in some embodiments, the second outer protective layer 1034 includes a PET layer; the second inner protective layer 1032 includes a TAC layer; and the second polarizing layer 1033 includes a PVA layer.

[0072] The PET layer can provide mechanical strength and environmental stability for the second polarizer 103 . The PET layer can prevent moisture and gas penetration, and provide physical support for the second polarizer 103 .

[0073] The TAC layer has excellent optical transparency, UV resistance and mechanical strength, and can effectively protect the second polarizing layer 1033 from environmental influences, thereby increasing the durability and stability of the second polarizer 103 .

[0074] The second adhesive layer 1031 may be a pressure sensitive adhesive layer for fixing the second polarizer 103 to the surface of the liquid crystal cell 101. It provides a strong, durable but easy to apply and remove adhesive.

[0075] The second polarizing layer 1033 is the core part of the second polarizer 103 and is responsible for polarizing light. This layer filters and adjusts the polarization direction of light so that the display panel 10 can accurately display images when powered on.

[0076] In some embodiments, the thickness of the first adhesive layer 1021 is the same as the thickness of the second adhesive layer 1031; and / or the thickness of the first inner protective layer 1022 is the same as the thickness of the second inner protective layer 1032; and / or the thickness of the first polarizing layer 1023 is the same as the thickness of the second polarizing layer 1033.

[0077] Exemplarily, the thickness of the first adhesive layer 1021 is the same as the thickness of the second adhesive layer 1031; the thickness of the first inner protective layer 1022 is the same as the thickness of the second inner protective layer 1032; the thickness of the first polarizing layer 1023 is the same as the thickness of the second polarizing layer 1033. In the above case, the overall thickness of the second polarizer 103 can be greater than the overall thickness of the first polarizer 102 only by setting the thickness of the second outer protective layer 1034 to be greater than the thickness of the first outer protective layer 1024.

[0078] Exemplarily, the first polarizer 102 and the second polarizer 103 satisfy at least one of the following conditions:

[0079] Case 1: The thickness of the second adhesive layer 1031 is greater than the thickness of the first adhesive layer 1021 .

[0080] Case 2: The thickness of the second inner protective layer 1032 is greater than the thickness of the first inner protective layer 1022 .

[0081] Case three: the thickness of the second outer protective layer 1034 is greater than the thickness of the first outer protective layer 1024 .

[0082] The above-mentioned configuration makes it possible to achieve that the overall thickness of the second polarizer 103 is greater than the overall thickness of the first polarizer 102 by setting the thickness of the second adhesive layer 1031 to be greater than the thickness of the first adhesive layer 1021; and / or the thickness of the second inner protective layer 1032 to be greater than the thickness of the first inner protective layer 1022; and / or the thickness of the second outer protective layer 1034 to be greater than the thickness of the first outer protective layer 1024.

[0083] In some embodiments, the thickness d1 of the first polarizer 102 and the thickness d2 of the second polarizer 103 satisfy: (1 / 6)d2≤d1≤(5 / 6)d2, but the present invention is not limited thereto.

[0084] Exemplarily, the thickness d1 of the first polarizer 102 and the thickness d2 of the second polarizer 103 satisfy the following relationship: (1 / 5)d2≤d1≤(4 / 5)d2, but the present invention is not limited thereto.

[0085] Exemplarily, the thickness d1 of the first polarizer 102 and the thickness d2 of the second polarizer 103 satisfy the following relationship: (1 / 4)d2≤d1≤(3 / 4)d2, but the present invention is not limited thereto.

[0086] Exemplarily, the thickness d1 of the first polarizer 102 and the thickness d2 of the second polarizer 103 satisfy the following relationship: (1 / 2)d2≤d1≤(3 / 4)d2, but the present invention is not limited thereto.

[0087] The thickness d1 of the first polarizer 102 and the thickness d2 of the second polarizer 103 satisfy the above relationship, which can better ensure that the shrinkage rate of the second polarizer 103 is greater than the shrinkage rate of the first polarizer 102, so that the display panel 10 gradually presents a natural bending state during the aging process, effectively reducing the bending stress, and reducing the concentration of the bending stress at the four corners of the liquid crystal box 101, thereby reducing the influence of the bending stress on the liquid crystal layer, and improving the four-corner light leakage phenomenon of the display panel 10 under the L0 Patten.

[0088] In some embodiments, the thickness d11 of the first adhesive layer 1021 satisfies: 15μm≤d11≤25μm; the thickness d12 of the first inner protective layer 1022 satisfies: 35μm≤d12≤45μm; the thickness d13 of the first polarizing layer 1023 satisfies: 15μm≤d13≤25μm; the thickness d14 of the first outer protective layer 1024 satisfies: 35μm≤d14≤65μm.

[0089] Exemplarily, the thickness d11 of the first adhesive layer 1021 may take values ​​of: 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, 25 μm, but is not limited thereto.

[0090] Exemplarily, the thickness d12 of the first inner protective layer 1022 may take values ​​of: 35 μm, 36 μm, 37 μm, 38 μm, 39 μm, 40 μm, 41 μm, 42 μm, 43 μm, 44 μm, 45 μm, but is not limited thereto.

[0091] Exemplarily, the thickness d13 of the first polarizing layer 1023 may take values ​​of: 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, 25 μm, but is not limited thereto.

[0092] Exemplarily, the thickness d14 of the first outer protective layer 1024 may take values ​​of: 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, but is not limited thereto.

[0093] In the display panel 10 provided in the above embodiment, the first adhesive layer 1021, the first inner protective layer 1022, the first polarizing layer 1023 and the first outer protective layer 1024 are set within the above thickness range, so that the first polarizer 102 can better ensure the bending effect caused by shrinkage while ensuring the normal polarization state, and control the display panel 10 to form a natural bending state.

[0094] In some embodiments, the thickness d21 of the second adhesive layer 1031 satisfies: 15μm≤d21≤25μm; the thickness d22 of the second inner protective layer 1032 satisfies: 35μm≤d22≤45μm; the thickness d23 of the second polarizing layer 1033 satisfies: 15μm≤d23≤25μm; the thickness d24 of the second outer protective layer 1034 satisfies: 75μm≤d24≤90μm.

[0095] Exemplarily, the thickness d21 of the second adhesive layer 1031 may take values ​​of: 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, 25 μm, but is not limited thereto.

[0096] Exemplarily, the thickness d22 of the second inner protective layer 1032 may take values ​​of: 35 μm, 36 μm, 37 μm, 38 μm, 39 μm, 40 μm, 41 μm, 42 μm, 43 μm, 44 μm, 45 μm, but is not limited thereto.

[0097] Exemplarily, the thickness d23 of the second polarizing layer 1033 may take values ​​of: 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, 25 μm, but is not limited thereto.

[0098] Exemplarily, the thickness d24 of the second outer protective layer 1034 may take values ​​of: 75 μm, 78 μm, 80 μm, 82 μm, 85 μm, 88 μm, 90 μm, but is not limited thereto.

[0099] In the display panel 10 provided in the above embodiment, the second adhesive layer 1031, the second inner protective layer 1032, the second polarizing layer 1033 and the second outer protective layer 1034 are set within the above thickness range, so that the second polarizer 103 can better ensure the bending effect caused by shrinkage while ensuring the normal polarization state, and control the display panel 10 to form a natural bending state.

[0100] In some embodiments, a thickness d1 of the first polarizer 102 satisfies: 115 μm≤d1≤145 μm; a thickness d2 of the second polarizer 103 satisfies: 160 μm≤d2≤170 μm.

[0101] Exemplarily, the thickness d1 of the first polarizer 102 may take values ​​of: 115 μm, 117 μm, 120 μm, 122 μm, 125 μm, 127 μm, 130 μm, 132 μm, 135 μm, 137 μm, 140 μm, 142 μm, 145 μm, but is not limited thereto.

[0102] Exemplarily, the thickness d2 of the second polarizer 103 may take values ​​of: 160 μm, 161 μm, 162 μm, 163 μm, 164 μm, 165 μm, 166 μm, 167 μm, 168 μm, 169 μm, and 170 μm, but is not limited thereto.

[0103] In the display panel 10 provided in the above embodiment, the first polarizer 102 and the second polarizer 103 are set within the above thickness range, so that the first polarizer 102 and the second polarizer 103 can better ensure the bending effect caused by shrinkage while ensuring the normal polarization state, and control the display panel 10 to form a natural bending state.

[0104] In some embodiments, the second outer protective layer 1034 is provided to include a PET layer having a thickness of 80 μm, and the first outer protective layer 1024 is provided to include a TAC layer having a thickness of 60 μm. The thickness of the first adhesive layer 1021 is the same as the thickness of the second adhesive layer 1031; the thickness of the first inner protective layer 1022 is the same as the thickness of the second inner protective layer 1032; the thickness of the first polarizing layer 1023 is the same as the thickness of the second polarizing layer 1033. In the above case, the light leakage degree of the display panel 10 is Lv2. In the related art, the light leakage degree of the display panel 10 is Lv3.

[0105] In some embodiments, the second outer protective layer 1034 is provided to include a PET layer having a thickness of 80 μm, and the first outer protective layer 1024 is provided to include a PMMA layer having a thickness of 40 μm. The thickness of the first inner protective layer 1022 is the same as the thickness of the second inner protective layer 1032; the thickness of the first polarizing layer 1023 is the same as the thickness of the second polarizing layer 1033. In the above case, the light leakage degree of the display panel 10 is Lv0.5. In the related art, the light leakage degree of the display panel 10 is Lv3.

[0106] It should be noted that Lv0 represents no light leakage, Lv1 represents slight light leakage, Lv2 represents relatively light leakage, Lv3 represents general light leakage, Lv4 represents heavier light leakage, and Lv5 represents severe light leakage. Currently, Lv2 and below are within the acceptable range.

[0107] In some embodiments, the first substrate includes an array substrate, the array substrate includes a first substrate, and a thin film transistor array layer arranged on the first substrate, the thin film transistor array layer is located between the first substrate and the liquid crystal layer; the second substrate includes a color film substrate, the color film substrate includes a second substrate, and a color film structure arranged on the second substrate, the color film structure includes a black matrix layer and a color film layer stacked, and the color film structure is located between the second substrate and the liquid crystal layer.

[0108] The above arrangement makes the display panel 10 bend toward one side of the color filter substrate. In this case, when the display panel 10 is combined with the backlight module, the backlight module can be arranged on the side where the array substrate is located.

[0109] In some embodiments, the second substrate includes an array substrate, the array substrate includes a second substrate, and a thin film transistor array layer disposed on the second substrate, the thin film transistor array layer is located between the second substrate and the liquid crystal layer;

[0110] The first substrate comprises a color film substrate, the color film substrate comprises a first substrate, and a color film structure arranged on the first substrate, the color film structure comprises a stacked black matrix layer and a color film layer, and the color film structure is located between the first substrate and the liquid crystal layer.

[0111] The above arrangement makes the display panel 10 bend toward one side of the array substrate. In this case, when the display panel 10 is combined with the backlight module, the backlight module can be arranged on the side where the color filter substrate is located.

[0112] The embodiment of the utility model further provides a display device, comprising the display panel 10 provided in the above embodiment.

[0113] Exemplarily, the display device further includes a backlight module, and the backlight module is disposed on a side of the first polarizer 102 facing away from the liquid crystal box 101 .

[0114] It should be noted that the display device can be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device also includes a flexible circuit board, a printed circuit board and a backplane, etc.

[0115] In the display panel 10 provided in the above embodiment, the first polarizer 102 is arranged on the side where the first substrate of the liquid crystal box 101 is located, and the second polarizer 103 is arranged on the side where the second substrate of the liquid crystal box 101 is located, and the thickness of the second polarizer 103 is set to be greater than the thickness of the first polarizer 102; this arrangement makes it possible for the shrinkage rate of the second polarizer 103 to be greater than the shrinkage rate of the first polarizer 102 after the display panel 10 is subjected to an aging process, so that the display panel 10 gradually presents a naturally curved state during the aging process, effectively reducing the bending stress, and reducing the concentration of the bending stress at the four corners of the liquid crystal box 101, thereby reducing the influence of the bending stress on the liquid crystal layer, and improving the light leakage phenomenon at the four corners of the display panel 10 under the L0 Patten. In the display panel 10 provided in the above embodiment, by setting the thickness of the second polarizer 103 to be greater than the thickness of the first polarizer 102, the problem of light leakage at the four corners of the curved display product during display due to bending stress during the bending process of the curved display product is solved, thereby ensuring the image quality and contrast of the curved display. The design scheme of the display panel 10 provided in the above embodiment is simple to implement and can better save costs.

[0116] The embodiment of the utility model further provides a method for manufacturing a display panel 10, which is used to manufacture the display panel 10 provided in the above embodiment; the manufacturing method comprises:

[0117] A liquid crystal box 101 is provided, wherein the liquid crystal box 101 comprises a first substrate and a second substrate which are arranged opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate;

[0118] A first polarizer 102 is attached to a side of the first substrate of the liquid crystal cell 101 facing away from the liquid crystal cell 101 ;

[0119] A second polarizer 103 is attached to a side of the second substrate of the liquid crystal cell 101 facing away from the liquid crystal cell 101 , and a thickness of the second polarizer 103 is greater than a thickness of the first polarizer 102 ;

[0120] An aging process is performed on the liquid crystal box 101 to which the first polarizer 102 and the second polarizer 103 are attached. During the aging process, the shrinkage force generated by the second polarizer 103 is greater than the shrinkage force generated by the first polarizer 102, so that the display panel 10 is formed into a curved display panel that bends toward the second polarizer 103 during the aging process.

[0121] In the display panel 10 manufactured by the manufacturing method provided by the embodiment of the utility model, the first polarizer 102 is arranged on the side where the first substrate of the liquid crystal box 101 is located, and the second polarizer 103 is arranged on the side where the second substrate of the liquid crystal box 101 is located, and the thickness of the second polarizer 103 is set to be greater than the thickness of the first polarizer 102; this arrangement method makes it possible for the shrinkage rate of the second polarizer 103 to be greater than the shrinkage rate of the first polarizer 102 after the display panel 10 is subjected to the aging process, so that the display panel 10 gradually presents a natural bending state during the aging process, effectively reducing the bending stress, and reducing the concentration of the bending stress at the four corners of the liquid crystal box 101, thereby reducing the influence of the bending stress on the liquid crystal layer, and improving the four-corner light leakage phenomenon of the display panel 10 under the L0 Patten.

[0122] In the display panel 10 manufactured by the manufacturing method provided by the embodiment of the utility model, by setting the thickness of the second polarizer 103 to be greater than the thickness of the first polarizer 102, the problem of light leakage at the four corners of the curved display product during display due to bending stress during the bending process of the curved display product is solved, thereby ensuring the picture quality and contrast of the curved display. In the display panel 10 manufactured by the manufacturing method provided by the embodiment of the utility model, the design scheme is simple to implement and can better save costs.

[0123] In some embodiments, the step of performing an aging process on the liquid crystal cell 101 attached with the first polarizer 102 and the second polarizer 103 specifically includes:

[0124] The liquid crystal box 101 attached with the first polarizer 102 and the second polarizer 103 is placed in an environment of 55° C. to 65° C. for aging, and the aging time is 70 to 74 hours.

[0125] Exemplarily, the liquid crystal cell 101 attached with the first polarizer 102 and the second polarizer 103 is placed in an environment of 60° C. for aging for 72 hours.

[0126] Exemplarily, the manufacturing method further includes surface treatment of the second polarizer 103, using sAG25 surface treatment 5μm. sAG25 surface treatment is a surface treatment process used to enhance the performance of the polarizer, such as anti-reflection, anti-wear, etc. Surface treatment 5μm means that the thickness of the surface treatment layer is 5μm. The first polarizer 102 has no surface treatment and only needs to be cleaned.

[0127] The display panel 10 gradually presents a naturally curved state when undergoing the above-mentioned aging process, which effectively reduces the bending stress and reduces the concentration of the bending stress at the four corners of the liquid crystal box 101, thereby reducing the influence of the bending stress on the liquid crystal layer and improving the light leakage phenomenon at the four corners of the display panel 10 under the L0 Patten.

[0128] In the various method embodiments of the present utility model, the serial numbers of the steps cannot be used to limit the order of the steps. For ordinary technicians in this field, without paying creative work, changes to the order of the steps are also within the protection scope of the present utility model.

[0129] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the product embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiment.

[0130] It should be noted that the "same layer" in the embodiment of the utility model may refer to a film layer on the same structural layer. Or, for example, a film layer on the same layer may be a film layer for forming a specific pattern formed by the same film forming process, and then the film layer is patterned by the same mask through a single composition process to form a layer structure. Depending on the specific pattern, a single composition process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0131] It should be noted that the signal line extends along a certain direction means that: the signal line includes a main part and a secondary part connected to the main part, the main part is a line, a line segment or a strip-shaped body, the main part extends along a certain direction, and the length of the main part extending along the certain direction is greater than the length of the secondary part extending along other directions.

[0132] Unless otherwise defined, the technical terms or scientific terms used in this disclosure should be understood by people with ordinary skills in the field to which the utility model belongs. "First", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect", "couple" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0133] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0134] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0135] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: A liquid crystal box, the liquid crystal box comprising a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate; a first polarizer, the first polarizer being located on a side of the first substrate facing away from the liquid crystal cell; a second polarizer, the second polarizer being located on a side of the second substrate facing away from the liquid crystal cell; The thickness of the second polarizer is greater than that of the first polarizer; and the display panel is formed as a curved display panel that is curved toward the second polarizer.

2. The display panel according to claim 1, characterized in that: The first polarizer comprises: a first adhesive layer, a first inner protective layer, a first polarizing layer and a first outer protective layer which are sequentially stacked in a direction away from the liquid crystal cell; The second polarizer comprises: a second adhesive layer, a second inner protective layer, a second polarizing layer and a second outer protective layer which are sequentially stacked in a direction away from the liquid crystal cell; The thickness of the second adhesive layer is greater than the thickness of the first adhesive layer; and / or, The thickness of the second inner protective layer is greater than the thickness of the first inner protective layer; and / or, The thickness of the second outer protective layer is greater than the thickness of the first outer protective layer.

3. The display panel according to claim 2, characterized in that: The first outer protective layer includes a PET layer, a TAC layer or a PMMA layer.

4. The display panel according to claim 2, characterized in that: The first inner protective layer includes a TAC layer; and the first polarizing layer includes a PVA layer.

5. The display panel according to claim 2, characterized in that: The second outer protective layer includes a PET layer; the second inner protective layer includes a TAC layer; and the second polarizing layer includes a PVA layer.

6. The display panel according to any one of claims 2 to 5, characterized in that: The thickness of the first adhesive layer is the same as the thickness of the second adhesive layer; and / or, the thickness of the first inner protective layer is the same as the thickness of the second inner protective layer; and / or, the thickness of the first polarizing layer is the same as the thickness of the second polarizing layer.

7. The display panel according to any one of claims 2 to 5, characterized in that: The thickness d1 of the first polarizer and the thickness d2 of the second polarizer satisfy the following relationship: (1 / 6)d2≤d1≤(5 / 6)d2.

8. The display panel according to any one of claims 2 to 5, characterized in that: The thickness d11 of the first adhesive layer satisfies: 15 μm≤d11≤25 μm; The thickness d12 of the first inner protective layer satisfies: 35 μm≤d12≤45 μm; The thickness d13 of the first polarizing layer satisfies: 15 μm≤d13≤25 μm; The thickness d14 of the first outer protective layer satisfies: 35 μm≤d14≤65 μm.

9. The display panel according to any one of claims 2 to 5, characterized in that: The thickness d21 of the second adhesive layer satisfies: 15 μm≤d21≤25 μm; The thickness d22 of the second inner protective layer satisfies: 35 μm≤d22≤45 μm; The thickness d23 of the second polarizing layer satisfies: 15 μm≤d23≤25 μm; The thickness d24 of the second outer protective layer satisfies: 75 μm≤d24≤90 μm.

10. The display panel according to any one of claims 2 to 5, characterized in that: The thickness d1 of the first polarizer satisfies: 115 μm≤d1≤145 μm; The thickness d2 of the second polarizer satisfies: 160 μm≤d2≤170 μm.

11. The display panel according to any one of claims 2 to 5, characterized in that: The first substrate includes an array substrate, the array substrate includes a first substrate, and a thin film transistor array layer disposed on the first substrate, the thin film transistor array layer is located between the first substrate and the liquid crystal layer; The second substrate includes a color film substrate, which includes a second substrate and a color film structure arranged on the second substrate, the color film structure includes a stacked black matrix layer and a color film layer, and the color film structure is located between the second substrate and the liquid crystal layer.

12. The display panel according to any one of claims 2 to 5, characterized in that: The second substrate comprises an array substrate, the array substrate comprises a second substrate, and a thin film transistor array layer disposed on the second substrate, the thin film transistor array layer is located between the second substrate and the liquid crystal layer; The first substrate comprises a color film substrate, the color film substrate comprises a first substrate, and a color film structure arranged on the first substrate, the color film structure comprises a stacked black matrix layer and a color film layer, and the color film structure is located between the first substrate and the liquid crystal layer.

13. A display device, characterized in that: The invention comprises the display panel according to any one of claims 1 to 12.

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