Display panel and manufacturing method therefor, and display device

Abstract

Provided in the present disclosure are a display panel and a manufacturing method therefor, and a display device. The display panel comprises a liquid crystal cell, a first polarizer and a second polarizer, wherein the liquid crystal cell comprises a first substrate and a second substrate which are arranged opposite each other, and a liquid crystal layer which is located between the first substrate and the second substrate; the first polarizer is located on the side of the first substrate facing away from the liquid crystal cell; the second polarizer is located on the side of the second substrate facing away from the liquid crystal cell; and the thickness of the second polarizer is greater than that of the first polarizer. The display panel is formed as a curved-surface display panel, which is bent toward the second polarizer.

Description

Display panel, manufacturing method thereof and display device

[0001] Cross-reference to related applications

[0002] The present application claims priority from Chinese Patent Application No. 202410826283.9 filed on June 25, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of display, and in particular, to a display panel, a manufacturing method thereof, and a display device. BACKGROUND

[0004] With the continuous development of display technology, the application field of display products is becoming more and more extensive. In order to meet the needs of different application scenarios, the demand for curved display products is increasing. Since the curved display product will be subjected to bending stress in the process of bending, the bending stress will affect the deflection of liquid crystal in the curved display product, thereby causing the curved display product to have obvious four-corner light leakage problem when displaying, affecting the picture quality of the curved display, and affecting the contrast of the display product. SUMMARY

[0005] The purpose of the present disclosure is to provide a display panel, a manufacturing method thereof, and a display device.

[0006] In order to achieve the above-mentioned purpose, the present disclosure provides the following technical solutions:

[0007] The first aspect of the present disclosure provides a display panel, comprising:

[0008] a liquid crystal cell, the liquid crystal cell comprising a first substrate and a second substrate arranged oppositely, and a liquid crystal layer located between the first substrate and the second substrate;

[0009] a first polarizing sheet, the first polarizing sheet being located on a side of the first substrate away from the liquid crystal cell;

[0010] a second polarizing sheet, the second polarizing sheet being located on a side of the second substrate away from the liquid crystal cell;

[0011] The thickness of the second polarizing sheet is greater than the thickness of the first polarizing sheet; and the display panel is formed into a curved display panel curved toward the second polarizing sheet.

[0012] Optionally, the first polarizing sheet comprises, in sequence from the direction away from the liquid crystal cell: a first adhesive layer, a first inner protective layer, a first polarizing layer, and a first outer protective layer;

[0013] The second polarizer comprises, in sequence from the direction away from the liquid crystal cell: a second adhesive layer, a second inner protective layer, a second polarizing layer, and a second outer protective layer;

[0014] The thickness of the second adhesive layer is greater than the thickness of the first adhesive layer; and / or,

[0015] The thickness of the second inner protective layer is greater than the thickness of the first inner protective layer; and / or,

[0016] The thickness of the second outer protective layer is greater than the thickness of the first outer protective layer.

[0017] Optionally, the first outer protective layer comprises a PET layer, a TAC layer, or a PMMA layer.

[0018] Optionally, the first inner protective layer comprises a TAC layer; and the first polarizing layer comprises a PVA layer.

[0019] Optionally, the second outer protective layer comprises a PET layer; the second inner protective layer comprises a TAC layer; and the second polarizing layer comprises a PVA layer.

[0020] 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.

[0021] Optionally, the thickness d1 of the first polarizer and the thickness d2 of the second polarizer satisfy: (1 / 6)d2≤d1≤(5 / 6)d2.

[0022] Optionally, the thickness d11 of the first adhesive layer satisfies: 15μm≤d11≤25μm;

[0023] The thickness d12 of the first inner protective layer satisfies: 35μm≤d12≤45μm;

[0024] The thickness d13 of the first polarizing layer satisfies: 15μm≤d13≤25μm;

[0025] The thickness d14 of the first outer protective layer satisfies: 35μm≤d14≤65μm.

[0026] Optionally, the thickness d21 of the second adhesive layer satisfies: 15μm≤d21≤25μm;

[0027] The thickness d22 of the second inner protective layer satisfies: 35μm≤d22≤45μm;

[0028] The thickness d23 of the second polarizing layer satisfies: 15μm≤d23≤25μm;

[0029] The thickness d24 of the second outer protective layer satisfies: 75 μm≤d24≤90 μm.

[0030] Optionally, the thickness d1 of the first polarizer satisfies: 115 μm≤d1≤145 μm.

[0031] The thickness d2 of the second polarizer satisfies: 160 μm≤d2≤170 μm.

[0032] 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, and the thin film transistor array layer is located between the first substrate and the liquid crystal layer.

[0033] The second substrate includes a color filter substrate, the color filter substrate includes a second substrate and a color filter structure disposed on the second substrate, the color filter structure includes a black matrix layer and a color filter layer which are stacked, and the color filter structure is located between the second substrate and the liquid crystal layer.

[0034] 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, and the thin film transistor array layer is located between the second substrate and the liquid crystal layer.

[0035] The first substrate includes a color filter substrate, the color filter substrate includes a first substrate and a color filter structure disposed on the first substrate, the color filter structure includes a black matrix layer and a color filter layer which are stacked, and the color filter structure is located between the first substrate and the liquid crystal layer.

[0036] Based on the technical solutions of the above display panel, the second aspect of the present disclosure provides a display device including the above display panel.

[0037] Based on the technical solutions of the above display panel, the third aspect of the present disclosure provides a manufacturing method of a display panel, which is used for manufacturing the above display panel; the manufacturing method includes:

[0038] Providing a liquid crystal box, the liquid crystal box includes a first substrate and a second substrate which are oppositely arranged, and a liquid crystal layer located between the first substrate and the second substrate;

[0039] Attaching a first polarizer to a side of the first substrate of the liquid crystal box which is away from the liquid crystal box;

[0040] Attaching a second polarizer to a side of the second substrate of the liquid crystal box which is away from the liquid crystal box, the thickness of the second polarizer is greater than the thickness of the first polarizer;

[0041] The liquid crystal cell attached with the first polarizer and the second polarizer is subjected to an aging process, and during the aging process, the shrinkage force generated by the second polarizer is greater than the shrinkage force generated by the first polarizer, so that the display panel is formed into a curved display panel curved towards the second polarizer during the aging process.

[0042] Optionally, the step of subjecting the liquid crystal cell attached with the first polarizer and the second polarizer to the aging process specifically comprises: placing the liquid crystal cell attached with the first polarizer and the second polarizer in an environment at 55-65°C for aging, and the aging time is 70-74 hours. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of the present disclosure, illustrate the exemplary embodiments of the present disclosure and serve to explain the present disclosure together with the description. In the drawings:

[0044] FIG. 1 is a shrinkage schematic diagram of the first polarizer and the second polarizer in the display panel provided by the embodiments of the present disclosure;

[0045] FIG. 2 is a schematic diagram of the display panel in a bowl warping state provided by the embodiments of the present disclosure;

[0046] FIG. 3 is a schematic diagram of the display panel in a turtle warping state provided by the embodiments of the present disclosure;

[0047] FIG. 4 is a schematic diagram of each film layer of the first polarizer provided by the embodiments of the present disclosure;

[0048] FIG. 5 is a schematic diagram of each film layer of the second polarizer provided by the embodiments of the present disclosure;

[0049] FIG. 6 is a front view of the display panel provided by the embodiments of the present disclosure;

[0050] FIG. 7 is a side view of the display panel provided by the embodiments of the present disclosure. DETAILED DESCRIPTION

[0051] In order to further illustrate the display panel and the manufacturing method thereof and the display device provided by the embodiments of the present disclosure, the following will be described in detail with reference to the accompanying drawings.

[0052] Please refer to FIGS. 1-3, 6 and 7, the embodiments of the present disclosure provide a display panel 10, comprising:

[0053] a liquid crystal cell 101, the liquid crystal cell 101 comprising a first substrate and a second substrate arranged oppositely, and a liquid crystal layer between the first substrate and the second substrate;

[0054] a first polarizer 102, which is located on the side of the first substrate away from the liquid crystal cell 101;

[0055] a second polarizer 103, which is located on the side of the second substrate away from the liquid crystal cell 101;

[0056] The thickness of the second polarizer 103 is greater than the thickness of the first polarizer 102; the display panel 10 is formed as a curved display panel curved toward the second polarizer 103.

[0057] As an example, the side on which the second polarizer 103 is located in FIG. 2 is the light-out side of the display panel 10.

[0058] As an example, 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.

[0059] As an example, 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 transmitted light to generate an image. The first polarizer 102 and the second polarizer 103 are combined with the liquid crystal layer to modulate, which can achieve precise control of the brightness of each pixel and enhance the contrast and clarity of the picture.

[0060] As shown in FIG. 2, as an example, the display panel 10 includes a curved display panel, and the display panel 10 is formed as a bowl-tilting state curved toward the second polarizer 103. The bowl-tilting state includes two opposite sides of the display panel tilting and curving toward the middle.

[0061] 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 cell 101, and therefore, the shrinkage of the first polarizer 102 and the second polarizer 103 will affect the overall curved state of the display panel 10. In the case where the thickness of the second polarizer 103 is greater than the thickness of the first polarizer 102, after the aging process (Aging process), the shrinkage rate of the second polarizer 103 is greater than the shrinkage rate of the first polarizer 102, so that the overall display panel 10 is curved toward the second polarizer 103. As shown in FIG. 2, the display panel 10 is in a bowl-tilting state. As shown in FIG. 3, the display panel 10 is in a turtle-tilting state.

[0062] As shown in FIG. 1, the first polarizer 102 and the second polarizer 103 shrink under the shrinkage force as shown in FIG. 1 during the aging process. 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 moment of the second polarizer 103 is greater than the shrinkage moment of the first polarizer 102. The moment represents the ability of the force to produce a rotating effect on an object. Therefore, the ability of the second polarizer 103 to drive the liquid crystal box 101 to bend is greater than the ability of the first polarizer 102 to drive the liquid crystal box 101 to bend. The bending of the liquid crystal box 101 driven by the shrinkage of the first polarizer 102 and the second polarizer 103 produces a force arm on the liquid crystal box 101 as shown in FIG. 1.

[0063] More specifically, when the display panel 10 is subjected to the aging process, the first substrate and the second substrate included in the liquid crystal box 101 in the display panel 10 will bend, which causes the bending stress to accumulate at the four corners of the liquid crystal box 101. The first substrate and the second substrate produce greater pressure on the liquid crystal layer in the liquid crystal box 101, which in turn causes the liquid crystal molecules to abnormally deflect. In the case of displaying L0 Patten (0 gray scale image), the four-corner light leakage phenomenon occurs.

[0064] According to the specific structure of the display panel 10 described above, in the display panel 10 provided by the embodiments of the present disclosure, the first polarizer 102 is arranged on the side of the first substrate of the liquid crystal box 101, and the second polarizer 103 is arranged on the side of the second substrate of the liquid crystal box 101. Meanwhile, the thickness of the second polarizer 103 is set to be greater than the thickness of the first polarizer 102. This arrangement makes the shrinkage rate of the second polarizer 103 greater than the shrinkage rate of the first polarizer 102 after the aging process of the display panel 10, so that the display panel 10 gradually presents a natural bending state when it is subjected to the aging process. This effectively reduces the bending stress and the accumulation 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 L0 Patten.

[0065] In the display panel 10 provided by the embodiments of the present disclosure, by setting the thickness of the second polarizer 103 to be greater than the thickness of the first polarizer 102, the problem of four-corner light leakage of the curved display product during display caused by the bending stress in the bending process of the curved display product is solved, and the picture quality and contrast of the curved display are ensured. The design scheme of the display panel 10 provided by the embodiments of the present disclosure is simple to implement and can better save costs.

[0066] As shown in FIG. 4 and FIG. 5, in some embodiments, the first polarizer 102 comprises 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.

[0067] The second polarizer 103 comprises 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.

[0068] 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.

[0069] The overall thickness of the second polarizer 103 can be 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.

[0070] As shown in FIG. 4, in some embodiments, the first outer protective layer 1024 comprises a PET layer (polyethylene terephthalate layer), a TAC layer (triacetyl cellulose layer) or a PMMA layer (polymethyl methacrylate layer).

[0071] The PET layer can provide mechanical strength and environmental stability to the first polarizer 102, and prevent moisture and gas penetration while providing physical support to the first polarizer 102.

[0072] The TAC layer has excellent optical transparency, ultraviolet resistance and mechanical strength, which can effectively protect the first polarizing layer 1023 from environmental influences and increase the durability and stability of the first polarizer 102.

[0073] The PMMA layer, also known as organic glass or acrylic, is a transparent plastic. When used in the first polarizer 102, the PMMA layer 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.

[0074] As shown in FIG. 4, in some embodiments, the first inner protective layer 1022 comprises a TAC layer; and the first polarizing layer 1023 comprises a PVA layer (polyvinyl alcohol layer).

[0075] The first adhesive layer 1021 can 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 effect.

[0076] The first polarizing layer 1023 is the core part of the first polarizer 102, which 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.

[0077] As shown in FIG. 5, in some embodiments, the second outer protective layer 1034 comprises a PET layer; the second inner protective layer 1032 comprises a TAC layer; and the second polarizing layer 1033 comprises a PVA layer.

[0078] The PET layer can provide mechanical strength and environmental stability for the second polarizer 103. The PET layer can prevent moisture and gas penetration, while providing physical support for the second polarizer 103.

[0079] The TAC layer has excellent optical transparency, ultraviolet resistance and mechanical strength, which can effectively protect the second polarizing layer 1033 from environmental effects, increase the durability and stability of the second polarizer 103.

[0080] The second adhesive layer 1031 can be a pressure-sensitive adhesive layer, which is used to fix 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 effect.

[0081] The second polarizing layer 1033 is the core part of the second polarizer 103, which 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.

[0082] 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.

[0083] 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; and 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 polarizing sheet 103 can be made greater than the overall thickness of the first polarizing sheet 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.

[0084] Exemplarily, the first polarizing sheet 102 and the second polarizing sheet 103 satisfy at least one of the following cases:

[0085] Case one, the thickness of the second adhesive layer 1031 is greater than the thickness of the first adhesive layer 1021.

[0086] Case two, the thickness of the second inner protective layer 1032 is greater than the thickness of the first inner protective layer 1022.

[0087] Case three, the thickness of the second outer protective layer 1034 is greater than the thickness of the first outer protective layer 1024.

[0088] The above setting mode makes it possible to achieve the overall thickness of the second polarizing sheet 103 being greater than the overall thickness of the first polarizing sheet 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.

[0089] In some embodiments, the thickness d1 of the first polarizing sheet 102 and the thickness d2 of the second polarizing sheet 103 satisfy: (1 / 6)d2≤d1≤(5 / 6)d2, but not only limited thereto.

[0090] Exemplarily, the thickness d1 of the first polarizing sheet 102 and the thickness d2 of the second polarizing sheet 103 satisfy: (1 / 5)d2≤d1≤(4 / 5)d2, but not only limited thereto.

[0091] Exemplarily, the thickness d1 of the first polarizing sheet 102 and the thickness d2 of the second polarizing sheet 103 satisfy: (1 / 4)d2≤d1≤(3 / 4)d2, but not only limited thereto.

[0092] Exemplarily, the thickness d1 of the first polarizing sheet 102 and the thickness d2 of the second polarizing sheet 103 satisfy: (1 / 2)d2≤d1≤(3 / 4)d2, but not only limited thereto.

[0093] The relationship between the thickness d1 of the first polarizer 102 and the thickness d2 of the second polarizer 103 satisfies the above relationship, which can better ensure that the shrinkage rate of the second polarizer 103 is greater than that of the first polarizer 102, so that the display panel 10 gradually presents a natural curved state when it undergoes an aging process, effectively reducing the bending stress and the aggregation 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.

[0094] In some embodiments, the thickness d11 of the first adhesive layer 1021 satisfies: 15 μm≤d11≤25 μm; the thickness d12 of the first inner protective layer 1022 satisfies: 35 μm≤d12≤45 μm; the thickness d13 of the first polarizing layer 1023 satisfies: 15 μm≤d13≤25 μm; and the thickness d14 of the first outer protective layer 1024 satisfies: 35 μm≤d14≤65 μm.

[0095] For example, the thickness d11 of the first adhesive layer 1021 can be 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, or 25 μm, but is not limited to this.

[0096] For example, the thickness d12 of the first inner protective layer 1022 can be 35 μm, 36 μm, 37 μm, 38 μm, 39 μm, 40 μm, 41 μm, 42 μm, 43 μm, 44 μm, or 45 μm, but is not limited to this.

[0097] For example, the thickness d13 of the first polarizing layer 1023 can be 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm, or 25 μm, but is not limited to this.

[0098] For example, the thickness d14 of the first outer protective layer 1024 can be 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, or 65 μm, but is not limited to this.

[0099] In the display panel 10 provided by the above embodiments, the first adhesive layer 1021, the first inner protective layer 1022, the first polarizing layer 1023, and the first outer protective layer 1024 are arranged in the above thickness range, so that the first polarizer 102 can better ensure the bending effect caused by shrinkage while ensuring normal polarization, and control the display panel 10 to form a natural curved state.

[0100] In some embodiments, the thickness d21 of the second adhesive layer 1031 satisfies: 15 μm≤d21≤25 μm; the thickness d22 of the second inner protective layer 1032 satisfies: 35 μm≤d22≤45 μm; the thickness d23 of the second polarizing layer 1033 satisfies: 15 μm≤d23≤25 μm; and the thickness d24 of the second outer protective layer 1034 satisfies: 75 μm≤d24≤90 μm.

[0101] For example, the thickness d21 of the second adhesive layer 1031 can be 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 to this.

[0102] For example, the thickness d22 of the second inner protective layer 1032 can be 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 to this.

[0103] For example, the thickness d23 of the second polarizing layer 1033 can be 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 to this.

[0104] For example, the thickness d24 of the second outer protective layer 1034 can be 75 μm, 78 μm, 80 μm, 82 μm, 85 μm, 88 μm, 90 μm, but is not limited to this.

[0105] In the display panel 10 provided by the above embodiments, the second adhesive layer 1031, the second inner protective layer 1032, the second polarizing layer 1033, and the second outer protective layer 1034 are arranged in the above thickness ranges, so that the second polarizing sheet 103 can better ensure the bending effect caused by shrinkage and control the display panel 10 to form a natural bending state while ensuring normal polarization state.

[0106] In some embodiments, the thickness d1 of the first polarizing sheet 102 satisfies: 115 μm≤d1≤145 μm; and the thickness d2 of the second polarizing sheet 103 satisfies: 160 μm≤d2≤170 μm.

[0107] For example, the thickness d1 of the first polarizing sheet 102 can be 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 to this.

[0108] Exemplarily, the thickness d2 of the second polarizer 103 can be 160 μm, 161 μm, 162 μm, 163 μm, 164 μm, 165 μm, 166 μm, 167 μm, 168 μm, 169 μm, 170 μm, but is not limited to this.

[0109] In the display panel 10 provided by the above embodiment, the first polarizer 102 and the second polarizer 103 are arranged in the above thickness range, so that the first polarizer 102 and the second polarizer 103 can better ensure the bending effect caused by shrinkage and control the display panel 10 to form a natural bending state while ensuring normal polarization state.

[0110] In some embodiments, the second outer protective layer 1034 includes a PET layer with a thickness of 80 μm, and the first outer protective layer 1024 includes a TAC layer with 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; and 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.

[0111] In some embodiments, the second outer protective layer 1034 includes a PET layer with a thickness of 80 μm, and the first outer protective layer 1024 includes a PMMA layer with 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; and 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.

[0112] It should be noted that Lv0 represents no light leakage, Lv1 represents slight light leakage, Lv2 represents relatively slight light leakage, Lv3 represents general light leakage, Lv4 represents relatively heavy light leakage, and Lv5 represents serious light leakage. Currently, Lv2 and below are acceptable ranges.

[0113] In some embodiments, the first substrate comprises an array substrate, the array substrate comprises a first substrate and a thin film transistor array layer disposed on the first substrate, the thin film transistor array layer is between the first substrate and the liquid crystal layer; the second substrate comprises a color filter substrate, the color filter substrate comprises a second substrate and a color filter structure disposed on the second substrate, the color filter structure comprises a black matrix layer and a color filter layer which are stacked, and the color filter structure is between the second substrate and the liquid crystal layer.

[0114] The above arrangement makes the display panel 10 bend towards the 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 of the array substrate.

[0115] In some embodiments, 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 between the second substrate and the liquid crystal layer.

[0116] The first substrate comprises a color filter substrate, the color filter substrate comprises a first substrate and a color filter structure disposed on the first substrate, the color filter structure comprises a black matrix layer and a color filter layer which are stacked, and the color filter structure is between the first substrate and the liquid crystal layer.

[0117] The above arrangement makes the display panel 10 bend towards the 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 of the color filter substrate.

[0118] The display device provided by the embodiments of the present disclosure comprises the display panel 10 provided by the above embodiments.

[0119] For example, the display device further comprises a backlight module, the backlight module is arranged on the side of the first polarizer 102 away from the liquid crystal box 101.

[0120] It should be noted that the display device can be any product or component with display function, such as a television, a display, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further comprises a flexible circuit board, a printed circuit board, a back plate, etc.

[0121] The display panel 10 provided by the above embodiment is provided with the first polarizer 102 on the side of the first substrate of the liquid crystal box 101, and the second polarizer 103 on the side of the second substrate of the liquid crystal box 101, and the thickness of the second polarizer 103 is greater than that of the first polarizer 102. After the aging process of the display panel 10, the shrinkage rate of the second polarizer 103 is greater than that of the first polarizer 102, so that the display panel 10 gradually presents a natural curved state during the aging process, effectively reducing the bending stress and the aggregation 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 LOPatten. In the display panel 10 provided by the above embodiment, by setting the thickness of the second polarizer 103 to be greater than that of the first polarizer 102, the problem of four-corner light leakage of the curved display product during display caused by the bending stress during the bending process is solved, and the picture quality and contrast of the curved display are ensured. The design scheme of the display panel 10 provided by the above embodiment is simple to implement and can better save costs.

[0122] The display panel 10 provided by the above embodiment is provided with the first polarizer 102 on the side of the first substrate of the liquid crystal box 101, and the second polarizer 103 on the side of the second substrate of the liquid crystal box 101, and the thickness of the second polarizer 103 is greater than that of the first polarizer 102. After the aging process of the display panel 10, the shrinkage rate of the second polarizer 103 is greater than that of the first polarizer 102, so that the display panel 10 gradually presents a natural curved state during the aging process, effectively reducing the bending stress and the aggregation 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 LOPatten. In the display panel 10 provided by the above embodiment, by setting the thickness of the second polarizer 103 to be greater than that of the first polarizer 102, the problem of four-corner light leakage of the curved display product during display caused by the bending stress during the bending process is solved, and the picture quality and contrast of the curved display are ensured. The design scheme of the display panel 10 provided by the above embodiment is simple to implement and can better save costs.

[0123] A liquid crystal box 101 is provided, which comprises a first substrate and a second substrate arranged oppositely, and a liquid crystal layer between the first substrate and the second substrate;

[0124] A first polarizer 102 is attached to the side of the first substrate of the liquid crystal box 101 away from the liquid crystal box 101;

[0125] A second polarizer 103 is attached to the side of the second substrate of the liquid crystal box 101 away from the liquid crystal box 101, and the thickness of the second polarizer 103 is greater than that of the first polarizer 102;

[0126] An aging process is performed on the liquid crystal box 101 with the first polarizer 102 and the second polarizer 103 attached, and during the aging process, the shrinkage force generated by the second polarizer 103 is greater than that generated by the first polarizer 102, so that the display panel 10 is formed into a curved display panel curved toward the second polarizer 103 during the aging process.

[0127] The display panel 10 manufactured by the manufacturing method provided in the embodiment of the present disclosure is provided with the first polarizer 102 on the side of the first substrate of the liquid crystal box 101, and the second polarizer 103 on the side of the second substrate of the liquid crystal box 101, and the thickness of the second polarizer 103 is greater than that of the first polarizer 102. After the aging process of the display panel 10, the shrinkage rate of the second polarizer 103 is greater than that of the first polarizer 102, so that the display panel 10 gradually presents a natural curved state during the aging process, effectively reducing the bending stress and the aggregation 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.

[0128] In the display panel 10 manufactured by the manufacturing method provided in the embodiment of the present disclosure, by setting the thickness of the second polarizer 103 to be greater than that of the first polarizer 102, the problem of four-corner light leakage of the curved display product during display caused by the bending stress during the bending process is solved, and the picture quality and contrast of the curved display are ensured. In the display panel 10 manufactured by the manufacturing method provided in the embodiment of the present disclosure, the design scheme is simple to implement and can better save costs.

[0129] In some embodiments, the step of performing an aging process on the liquid crystal box 101 attached with the first polarizer 102 and the second polarizer 103 specifically comprises:

[0130] The liquid crystal box 101 attached with the first polarizer 102 and the second polarizer 103 is placed in an environment of 55-65°C for aging, and the aging time is 70-74 hours.

[0131] For example, the liquid crystal box 101 attached with the first polarizer 102 and the second polarizer 103 is placed in an environment of 60°C for aging, and the aging time is 72 hours.

[0132] For example, the manufacturing method further comprises surface treatment of the second polarizer 103, and the surface treatment is 5μm of sAG25. The sAG25 surface treatment is a surface treatment process for enhancing the performance of the polarizer, such as anti-reflection, anti-abrasion, etc. The surface treatment of 5μm indicates that the thickness of the surface treatment layer is 5μm. The first polarizer 102 is not surface treated and only needs to be cleaned.

[0133] The display panel 10 gradually presents a natural curved state when experiencing the above-mentioned aging process, effectively reducing the bending stress and the concentration of the bending stress at the four corners of the liquid crystal cell 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 LOPatten.

[0134] In the method embodiments of the present disclosure, the serial numbers of the steps do not serve to limit the sequence of the steps, and for those skilled in the art, the sequence of the steps can be changed without creative effort, and the changed sequence is within the protection scope of the present disclosure.

[0135] It should be noted that each of the embodiments in the present specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each of the embodiments mainly describes the differences from other embodiments. In particular, for the method embodiments, since they are basically similar to the product embodiments, the description is relatively simple, and the related parts can be referred to the part of the description of the product embodiments.

[0136] It should be noted that the "same layer" of the embodiments of the present disclosure can refer to a film layer on the same structure layer. Or for example, the film layers on the same layer can be layers formed by using the same film forming process to form a film layer for forming a specific pattern, and then using the same mask plate to patternize the film layer by a one-time patterning process. According to the difference of the specific pattern, the one-time patterning process can include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure can be continuous or discontinuous. These specific patterns can also be at different heights or have different thicknesses.

[0137] It should be noted that the signal line extending in a certain direction refers to 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 in a certain direction, and the length of the main part extending in a certain direction is greater than the length of the secondary part extending in other directions.

[0138] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the same meaning as commonly understood by one of ordinary skill in the art to which this present disclosure belongs. The terms "first", "second", and similar terms are used herein merely to distinguish one element from another, and are not intended to imply any order or sequence in time. The terms "comprises", "comprising", "includes", "including" and the like are not intended to exclude a combination of elements or a combination of steps. The terms "coupled", "connected", and "linked" and the like are not restricted to a direct coupling, connection or linking but also include an indirect coupling, connection or linking. The terms "upper", "lower", "left", "right" and the like are used for description only and are not intended to restrict the position of an object described.

[0139] It can be understood that when an element such as a layer, a film, a region, or a substrate is referred to as being "on" or "under" another element, it can be "directly on" or "directly under" the other element, or one or more intervening elements can also be present.

[0140] In the description of the above embodiments, the specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0141] The above description is merely illustrative of the disclosure and does not limit the scope of the disclosure. Any modifications made within the spirit and principles of the disclosure shall be considered within the scope of the disclosure. Therefore, the scope of the disclosure should be determined by the scope of the claims.

Claims

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

2. The display panel according to claim 1, wherein, 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 along a direction away from the liquid crystal cell; The second polarizer includes: a second adhesive layer, a second inner protective layer, a second polarizing layer, and a second outer protective layer, which are sequentially stacked along 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, wherein, The first outer protective layer includes a PET layer, a TAC layer, or a PMMA layer.

4. The display panel according to claim 2, wherein, The first inner protective layer includes a TAC layer; the first polarizing layer includes a PVA layer.

5. The display panel according to claim 2, wherein, 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, wherein, 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, wherein, 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, wherein, The thickness d11 of the first adhesive layer satisfies: 15μm≤d11≤25μm; The thickness d12 of the first inner protective layer satisfies: 35μm≤d12≤45μm; The thickness d13 of the first polarization layer satisfies: 15μm≤d13≤25μm; The thickness d14 of the first outer protective layer satisfies: 35μm≤d14≤65μm.

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

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

11. The display panel according to any one of claims 2 to 5, wherein, 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 being located between the first substrate and the liquid crystal layer; The second substrate includes a color filter substrate, the color filter substrate includes a second substrate, and a color filter structure disposed on the second substrate. The color filter structure includes a black matrix layer and a color filter layer stacked together, and the color filter 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, wherein, 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 being located between the second substrate and the liquid crystal layer; The first substrate includes a color filter substrate, the color filter substrate includes a first substrate and a color filter structure disposed on the first substrate, the color filter structure includes a black matrix layer and a color filter layer stacked thereon, and the color filter structure is located between the first substrate and the liquid crystal layer.

13. A display device comprising a display panel as claimed in any one of claims 1 to 12.

14. A method for manufacturing a display panel, used to manufacture a display panel as described in any one of claims 1 to 14; the method comprising: A liquid crystal cell is provided, the liquid crystal cell including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate; A first polarizer is attached to the side of the first substrate of the liquid crystal cell facing away from the liquid crystal cell. A second polarizer is attached to the side of the second substrate of the liquid crystal cell facing away from the liquid crystal cell, and the thickness of the second polarizer is greater than the thickness of the first polarizer. An aging process is performed on the liquid crystal cell to which the first polarizer and the second polarizer are attached. During the aging process, the shrinkage force generated by the second polarizer is greater than that generated by the first polarizer, so that the display panel is formed into a curved display panel that bends toward the second polarizer during the aging process.

15. The method for manufacturing a display panel according to claim 14, wherein, The steps of the aging process for the liquid crystal cell with the first polarizer and the second polarizer attached specifically include: The liquid crystal cell with the first polarizer and the second polarizer attached is placed in an environment of 55℃~65℃ for aging, and the aging time is 70~74 hours.

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