WO2023220921A1 - 盖板、显示模组和显示装置 - Google Patents

盖板、显示模组和显示装置 Download PDF

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Publication number
WO2023220921A1
WO2023220921A1 PCT/CN2022/093292 CN2022093292W WO2023220921A1 WO 2023220921 A1 WO2023220921 A1 WO 2023220921A1 CN 2022093292 W CN2022093292 W CN 2022093292W WO 2023220921 A1 WO2023220921 A1 WO 2023220921A1
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WIPO (PCT)
Prior art keywords
cover plate
resin coating
area
optical resin
glass substrate
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PCT/CN2022/093292
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English (en)
French (fr)
Inventor
汤强
毕铁钧
高涌效
王世友
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202280001240.6A priority Critical patent/CN117616488A/zh
Priority to PCT/CN2022/093292 priority patent/WO2023220921A1/zh
Publication of WO2023220921A1 publication Critical patent/WO2023220921A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the present disclosure relates to the technical field of display product manufacturing, and in particular to a cover plate, a display module and a display device.
  • the thickness of the glass When the thickness of the glass reaches less than 100um, the flexibility of the glass is revealed.
  • ultra-thin flexible glass has become the core component of folding display covers. Compared with polymer materials, glass materials have a higher Young's modulus, and their ability to recover from deformation after bending is better than polymer materials. When applied to folding screens, it can significantly improve the crease problem of folding displays. However, in order to ensure that the folding display has good bending performance, the thickness of the glass must be very thin.
  • the thickness of the ultra-thin glass currently used is basically 30 to 70um. However, when the glass thickness reaches 70um and below, the impact strength of the glass is extremely weak, that is, the impact strength and bending performance of the glass cannot be taken into consideration at the same time.
  • ultra-thin flexible glass is expensive, and its price may be dozens of times higher. How to use thicker glass to replace or partially replace ultra-thin flexible glass has become a hot topic. research direction.
  • the present disclosure provides a cover plate, a display module and a display device, which solves the problem that the cover plate is made of glass and cannot balance impact strength and bending performance.
  • a cover plate including a cover plate main body, the cover plate main body includes a bending area and non-bending areas located on both sides of the bending area,
  • the non-bending area includes a glass substrate, and the bending area includes a first optical resin coating formed by using an optical resin material through a coating process.
  • the cover body includes a first side and a second side that are oppositely arranged along its thickness direction, and the bending area includes the glass substrate in the direction from the first side to the second side. and a second optical resin coating coated on the glass substrate;
  • the first optical resin coating has a first surface located on the second side
  • the second optical resin coating has a second surface located on the second side
  • the first surface and the second The surfaces are in the same plane.
  • the glass substrate has a third surface located on the first side
  • the first optical resin coating includes a fourth surface located on the first side, the third surface and the fourth surface The surfaces are in the same plane.
  • the first side of the cover body is bonded with a first flexible film material through an optical adhesive layer, or the second side of the cover body is bonded with a first flexible film material through an optical adhesive layer.
  • Membrane material is bonded with a first flexible film material through an optical adhesive layer.
  • the first flexible film material is made of PET, CPI, PMMA or ultra-thin glass.
  • the thickness of the first flexible film material is less than or equal to 20um.
  • the cover body further includes a transition area between the bending area and the non-bending area.
  • the transition area includes a third optical resin coating coated with the third optical resin coating.
  • the resin coating includes a fifth surface located on the second side, the fifth surface being on the same plane as the second surface;
  • the glass substrate has a third surface located on the first side, the third optical resin coating includes a sixth surface located on the first side, the sixth surface and the third surface are located on the same plane. .
  • the bending area in the direction from the first side to the second side, includes a second flexible film material and the first optical resin coating coated on the second flexible film material. layer.
  • the second flexible film material is made of PET, CPI, PMMA or ultra-thin glass.
  • the thickness of the second flexible film material is less than or equal to 70um.
  • the first side of the cover body is bonded with a third flexible film material through an optical adhesive layer; or the second side of the cover body is bonded with a third flexible film material through an optical adhesive layer.
  • Membrane material is bonded with a third flexible film material through an optical adhesive layer.
  • the third flexible membrane material is made of PET, CPI, PMMA or ultra-thin glass.
  • the thickness of the glass substrate is greater than or equal to 300um.
  • the glass substrate includes a side surface located close to the bending area and a light incident surface and a light exit surface adjacent to the side surface, where the light incident surface is used to receive light emitted by the display panel;
  • the edge where the light exit surface intersects with the side surface is chamfered or rounded, and/or the edge where the light incident surface intersects with the side surface is chamfered or rounded.
  • the cross section of the end of the glass substrate close to the bending area in the thickness direction of the cover body is 1/2 elliptical, or the end of the glass substrate close to the bending area has a cross-section of 1/2 ellipse in the thickness direction of the cover body.
  • the cover plate main body has a cross-section in the thickness direction of a 1/4 ellipse, and the 1/4 ellipse is protruding in a direction away from the light incident surface.
  • the light-emitting surface of the glass substrate in the direction from the non-bending area to the bending area, includes a flat part, a bevel part and a curved surface part, and the curved surface part is formed by the light-emitting surface and The intersection of the side surfaces is formed by rounding processing; and/or, from the direction from the non-bending area to the bending area, the light incident surface of the glass substrate includes a flat part, a bevel part and a curved part, The arc portion is formed by rounding the intersection of the light incident surface and the side surface.
  • the first optical resin coating, the second optical resin coating and the third optical resin coating are made of the same material, and the refractive index of the first optical resin coating is the same as that of the first optical resin coating.
  • the difference in refractive index of the glass substrate is less than or equal to 0.01.
  • the refractive index of the first optical resin coating is n, 1.50 ⁇ n ⁇ 1.54.
  • the transmittance of the first optical resin coating is greater than or equal to 90%.
  • the material of the first optical resin coating is polyester, polyurethane, thermoplastic polyurethane, polyamide, polyimide, polymethyl methacrylate, polypropylene, or polyethylene.
  • polypropylene polyvinyl chloride, polystyrene, styrene, polyoxymethylene, polyphenylene ether, polyphenylene sulfide, polysulfone, polyaryl ether ketone, styrene, polyolefin
  • One or more materials such as polyolefins and polyolefins.
  • An embodiment of the present disclosure also provides a display module, including a display panel and the above-mentioned cover plate located on the light emitting side of the display panel.
  • the display panel includes a binding area that is bent to the backlight side of the display panel to be bound and connected with the main circuit board, and the binding area is close to a side of the cover plate. Equipped with protective adhesive layer;
  • the orthographic projection of the binding area on the cover plate completely coincides with the cover plate, or the orthographic projection of the binding area on the cover plate is located in the first area of the cover plate, and the cover plate
  • the panel includes an edge area exposed at the periphery of the first area.
  • the cover plate includes an edge area exposed on the periphery of the first area, and the middle frame of the display module is connected to a side of the edge area close to the display panel.
  • An embodiment of the present disclosure also provides a display device, including the above display module.
  • the cover body includes at least two structures: a first optical resin coating and a glass substrate.
  • the first optical resin coating with strong bending performance is provided in the bending area.
  • the folding area is equipped with a glass substrate with strong impact resistance, which solves the problem that the cover plate only uses a glass substrate and cannot take into account both bending performance and impact resistance.
  • Figure 1 shows a schematic diagram of the folded state of the cover in an embodiment of the present disclosure
  • Figure 2 shows a schematic diagram of the flattened state of the cover plate in the embodiment of the present disclosure
  • Figure 3 shows a second schematic diagram of the flattened state of the cover plate in the embodiment of the present disclosure
  • Figure 4 shows the third schematic diagram of the flattened state of the cover plate in the embodiment of the present disclosure
  • Figure 5 shows a second schematic view of the folded state of the cover in the embodiment of the present disclosure
  • Figure 6 shows a schematic diagram 4 of the flat state of the cover plate in the embodiment of the present disclosure
  • Figure 7 shows a schematic diagram of the flattened state of the cover plate in the embodiment of the present disclosure
  • Figure 8 shows a schematic structural diagram of a display module in an embodiment of the present disclosure
  • Figure 9 shows a second structural schematic diagram of a display module in an embodiment of the present disclosure.
  • Figure 10 shows the structural schematic diagram 3 of the display module in the embodiment of the present disclosure
  • Figure 11 shows a schematic structural diagram of a glass substrate in an embodiment of the present disclosure
  • Figure 12 shows the second structural schematic diagram of the glass substrate in the embodiment of the present disclosure
  • Figure 13 shows the structural schematic diagram three of the glass substrate in the embodiment of the present disclosure
  • Figure 14 shows the structural schematic diagram 4 of the glass substrate in the embodiment of the present disclosure
  • Figure 15 shows a schematic diagram 5 of the structure of the glass substrate in the embodiment of the present disclosure
  • Figure 16 shows a schematic diagram of the assembly state of the cover plate and the middle frame in the embodiment of the present disclosure
  • Figure 17 shows the second schematic diagram of the assembly state of the cover plate and the middle frame in the embodiment of the present disclosure
  • FIG. 18 is a schematic diagram showing a state in which the cover plate is bent into a teardrop shape in an embodiment of the present disclosure.
  • this embodiment provides a cover plate, which includes a cover plate body.
  • the cover plate body includes a bending area 10 and non-bending areas 20 located on both sides of the bending area 10.
  • the non-bending area 20 includes the glass substrate 1
  • the bending area 10 includes a first optical resin coating 2 formed by using an optical resin material through a coating process.
  • the thickness of the glass is required to be very thin.
  • the thickness of ultra-thin glass that is commonly used in related technologies is basically 30 to 70um. However, when the glass thickness reaches 70um and below, the impact strength of the glass is extremely weak, that is, the impact strength and bending performance of the glass cannot be taken into consideration at the same time.
  • the cover body combines the first resin coating and the glass substrate 1, and the first optical resin coating 2 with strong bending performance is provided in the bending area 10.
  • the non-bending area 20 is provided with a glass substrate 1 with strong impact resistance.
  • the glass substrate 1 Since the glass substrate 1 is only provided in the non-bending area 20 and the non-bending area does not need to be bent, the glass substrate 1 The thickness can be set according to the requirements of impact resistance. There is no need to use ultra-thin glass. For example, the thickness of the glass substrate 1 can be greater than or equal to 300um. That is to say, the first optical resin is provided in the bending area 20 The combination of the coating 2 and the glass substrate 1 provided in the non-bending area 10 can not only ensure good bending performance of the cover plate, but also ensure good impact resistance of the cover plate.
  • Figure 1 shows a schematic diagram of the folded state of the cover
  • Figure 2 shows a schematic diagram of the unfolded state of the cover.
  • the cover in Figure 1 has a U-shaped structure in the folded state, with segments EF and F'E' is the non-bending area 20, and the FP-PF' section is the bending area 10; the EF and F'E' sections do not need to be bent, so the glass substrate 1 can be used (the glass substrate 1 here is a conventional Glass can be used instead of ultra-thin glass), which can greatly improve the impact strength of the non-bending area 20.
  • the FP-PF' section can be coated with optical resin and cured to form the first optical resin coating 2 for filling. Guaranteed bending performance.
  • the thickness of the glass substrate 1 is greater than or equal to 300um, but is not limited to this.
  • the first optical resin coating 2 is formed by coating and curing through a coating process, and has strong bending performance.
  • the material of the first optical resin coating 2 may be polyester, polyurethane, thermoplastic polyurethane, polyamide, polyimide, polymethyl methacrylate, polypropylene, polyethylene, poly Propylene, polyvinyl chloride, polystyrene, styrene, polyformaldehyde, polyphenylene ether, polyphenylene sulfide, polysulfone, polyaryl ether ketone, styrene, polyolefin, One or more types of materials such as polyolefins.
  • the bending area 10 can be completely filled with the first optical resin coating 2 , see FIG. 2 , but it is not limited thereto.
  • a flexible membrane material in order to strengthen the bending
  • the thickness of the flexible membrane material should be smaller. , to ensure the bending performance of the bending area 10, for example, it can be less than 70um, but is not limited to this.
  • the cover body includes a first side and a second side that are oppositely arranged along its thickness direction.
  • the bending area 10 includes the glass Substrate 1 and second optical resin coating 3 coated on the glass substrate 1;
  • the first optical resin coating 2 has a first surface located on the second side
  • the second optical resin coating 3 has a second surface located on the second side
  • the first surface and the The second surface is located on the same plane, refer to Figures 2-4.
  • the second optical resin coating 3 is provided to make up for the step difference between the glass substrate 1 and the first optical resin coating 2 and ensure the flatness of the second side of the cover body.
  • the first optical resin coating 2 and the second optical resin coating 3 are an integrated structure, and the first optical resin coating 2 and the second optical resin coating 3 are formed using a simultaneous process. .
  • the first optical resin coating 2 and the The second optical resin coating 3 is made of the same material, and the difference in refractive index between the first optical resin coating 2 and the glass substrate 1 is less than or equal to 0.01.
  • the first optical resin coating 2 The refractive index is n, 1.50 ⁇ n ⁇ 1.54, but it is not limited to this.
  • the glass substrate 1 has a third surface located on the first side
  • the first optical resin coating 2 includes a fourth surface located on the first side, the third surface and the The fourth surface is located in the same plane.
  • first side of the cover body is bonded with the first flexible film 4 through an optical adhesive layer, and/or the second side of the cover body is bonded with an optical adhesive layer.
  • First flexible membrane material 4 refer to Figures 3 and 4.
  • the first flexible film material 4 can be made of organic materials such as PET (polyethylene terephthalate), CPI (polyimide), PMMA (polymethylmethacrylate), etc. Or made of ultra-thin glass. It combines impact resistance, scratch resistance, flex resistance and surface hardness.
  • the thickness of the first flexible film material 4 is 50-80um.
  • FIG. 3 shows an example of arranging the first flexible membrane material on the first side
  • FIG. 4 shows an example of arranging the first flexible membrane material on the second side.
  • the first flexible film material is provided on the side of the cover body used to connect to the display panel.
  • the arrangement of the first flexible film material can protect the display panel and enhance the display.
  • the first flexible film material is disposed on the side of the cover body opposite to the side connected to the display panel, that is, the first flexible film material is disposed away from the cover body.
  • the first flexible film material protects both the cover body and the display panel, improving the impact resistance of the display module, and the first flexible film material can be used as Human-computer interaction surface enhances friction resistance.
  • the first flexible film material when the first flexible film material is disposed on the side of the cover body away from the display panel, the first flexible film material
  • the material is made of organic materials such as PET (polyethylene terephthalate), CPI (polyimide), PMMA (polymethylmethacrylate).
  • the cover body further includes a transition area 30 between the bending area 10 and the non-bending area 20 , and the transition area 30 includes a third optical resin.
  • Coating 6 the third optical resin coating 6 includes a fifth surface located on the second side, the fifth surface and the second surface are located on the same plane;
  • the glass substrate 1 has a third surface located on the first side, the third optical resin coating 6 includes a sixth surface located on the first side, the sixth surface and the third surface are located on same plane.
  • the transition zone 30 is subject to the largest tensile stress and is prone to cracks during the bending process.
  • the transition zone 30 is provided with the The third optical resin coating 6 , and the transition zone 30 is completely filled with the third optical resin coating 6 , ensuring the bending performance of the transition zone 30 to avoid cracks during the bending process.
  • the bending area 10 in the direction from the first side to the second side, includes a second flexible film material 7 and the first flexible film material 7 coated on the second flexible film material 7 .
  • the bending area 10 is subject to the largest compressive stress.
  • the combination of the first optical resin coating 2 and the second flexible film material 7 can increase the pressure resistance of the bending area 10, and Guarantee its bending performance.
  • the second flexible film material 7 can be made of organic materials such as PET (polyethylene terephthalate), CPI (polyimide), PMMA (polymethyl methacrylate), etc. Or made of ultra-thin glass. It combines impact resistance, scratch resistance, flex resistance and surface hardness.
  • the first side or the second side of the cover body is used to connect to the display panel. It should be noted that when the first side of the cover body is used to connect to the display panel, due to the ultrasonic Thin glass is fragile.
  • the second flexible film material is PET (polyethylene terephthalate), CPI (polyimide), PMMA (polymethyl methacrylate), etc. Made of organic materials.
  • the third flexible film 8 is bonded to the first side of the cover body through an optical adhesive layer; and/or the third flexible film material 8 is bonded to the second side of the cover body through an optical adhesive layer.
  • the third flexible film material 8 can be made of organic materials such as PET (polyethylene terephthalate), CPI (polyimide), PMMA (polymethylmethacrylate), etc. Or made of ultra-thin glass. It combines impact resistance, scratch resistance, flex resistance and surface hardness.
  • the thickness of the third flexible film material 8 is 50-80um.
  • the third flexible film material is provided on the side of the cover body used to connect to the display panel, so the provision of the third flexible film material 8 can protect the display panel and enhance the To improve the impact resistance of the entire display panel, the third flexible film material 8 is disposed on the side of the cover body opposite to the side connected to the display panel, that is, the third flexible film material 8 is disposed on the cover body.
  • the membrane material 8 can be used as a human-computer interaction surface to enhance friction resistance.
  • the third flexible film material 8 when the third flexible film material 8 is disposed on the side of the cover body away from the display panel, the third flexible film material 8 8 is made of organic materials such as PET (polyethylene terephthalate), CPI (polyimide), PMMA (polymethyl methacrylate).
  • PET polyethylene terephthalate
  • CPI polyimide
  • PMMA polymethyl methacrylate
  • the first side of the cover body is used to connect with the display panel, and the second side is provided with the third flexible film material 8. Due to the placement of the third flexible film material 8 , the second flexible membrane material 7 can be made of ultra-thin glass, and the third flexible membrane material 8 plays a protective role.
  • Figures 7 and 8 show that the first side of the cover body is used to connect to the display panel, and the second side is bonded with a third flexible film material 8 through an optical adhesive layer.
  • the structure shown in Figure 7 has strong impact resistance and friction resistance.
  • the structure shown in Figure 8 has a large hardness in the non-bending area, and the structure shown in Figure 10 makes The overall thickness of the display module is reduced.
  • the bending area ie, the transition area 30
  • the transition area 30 is subject to the greatest tensile stress, that is, the risk of peeling during the bending process is the greatest.
  • the place with the smallest bending curvature ie, the bending area 10
  • the transition area 30 is the BC section and the C'B' section shown in Figure 6.
  • the transition area 30 is completely filled with the third optical resin coating 6 (that is, the transition area 30 is completely filled with the third optical resin coating 6).
  • the transition zone 30 only includes the third optical resin coating 6 (see Figures 6 and 7).
  • the maximum compressive stress during the bending process (i.e., the bending zone 10) is the CO and OC' segments, combined with the basic knowledge of inorganic materials, the compressive stress strength of glass materials is 10 times the tensile stress strength.
  • the OC' section is filled with a bendable second flexible film material 7, that is, the bending area 10 adopts the first optical resin coating 2 and the second flexible film material 7 (the second flexible film material
  • the thickness of 7 can be selected to be less than or equal to 70um, but not limited to); considering that the non-bending area 20, that is, the AB and B'A' segments are not affected by the bending radius during the bending process and the influence of the number of bends, a thicker conventional cover glass (that is, the glass substrate 1, the thickness of the glass substrate 1 can be greater than or equal to 300um, but is not limited to this).
  • the above solution can not only satisfy the high impact strength of the non-bending area 20 and the bending strength of the bending area 10 , but also avoid the transition area 30 through the arrangement of the third optical resin coating 6 Peeling risk caused by excessive tensile stress during bending.
  • ⁇ is the water drop angle at which the cover plate is bent into a water drop shape
  • r is the arc radius of the water drop
  • segment BC i.e., the transition zone
  • L the minimum value of the transition zone in the Y direction.
  • the Y direction is different from the bending zone perpendicular to the direction to the non-bent area). That is, the length a of the BC segment is greater than or equal to L, and when the width of the BC segment in the Y direction is greater than or equal to the arc length of the drop-shaped arcing zone, the area corresponding to the entire arcing zone is coated with optical resin (i.e. The third optical resin coating) avoids the risk of peeling caused by excessive local tensile stress in this part during bending.
  • optical resin i.e. The third optical resin coating
  • the third optical resin coating 6 and the first optical resin coating 2 can be integrally formed using a synchronous process.
  • the second optical resin coating 3 and the first optical resin coating 2 can be integrally formed using a synchronous process to ensure the flatness of the second side of the cover, so that the cover forms a complete flexible cover in the shape of a water drop when in the folded state.
  • the second side of the cover body is used to connect with the display panel, and the second flexible film material 7 is made of ultra-thin glass.
  • the first side of the cover body is disposed away from the display panel.
  • the second flexible film material 7 is made of ultra-thin glass, which can enhance the bending performance of the bending area 10 while ensuring the bending performance. Impact resistance of bending zone 10.
  • the thickness of the second flexible film material 7 is less than or equal to 70um.
  • the glass substrate 1 includes a side 103 located close to the bending area 10 and a light incident surface 102 and a light exit surface 101 adjacent to the side 103.
  • Surface 102 is used to receive light emitted by the display panel;
  • the edge where the light exit surface 101 intersects with the side surface 103 is chamfered or rounded, and/or the edge where the light incident surface 102 intersects with the side surface 103 is chamfered or rounded.
  • the chamfer or rounded corner setting can prevent the occurrence of unclear light and dark phenomena.
  • the edge where the light exit surface 101 intersects with the side surface 103 is chamfered, and the edge where the light incident surface 102 intersects with the side surface 103 is chamfered.
  • the edge where the light exit surface 101 intersects with the side surface 103 is rounded, and the edge where the light incident surface 102 intersects with the side surface 103 is rounded.
  • the cross section of the end of the glass substrate 1 close to the bending area 10 in the thickness direction of the cover body is 1/2 elliptical, or the glass substrate 1 close to the bending area 10
  • the cross section of one end in the thickness direction of the cover body is a 1/4 ellipse, and the 1/4 ellipse is protruding in a direction away from the light incident surface 102 .
  • the cross section of the end of the glass substrate 1 close to the bending area 10 in the thickness direction of the cover body is a 1/4 ellipse, where the semi-major axis of the 1/4 ellipse is d, The semi-minor axis of the 1/4 ellipse is e, 0.5t ⁇ d ⁇ 1.5t, 0.5t ⁇ e ⁇ 1.5t.
  • the light exit surface 101 of the glass substrate 1 includes a flat part 1011 , a bevel part 1012 and a curved part 1013 , so The arc portion 1013 is formed by rounding the intersection of the light exit surface 101 and the side surface 103; and/or, in the direction from the non-bending area 20 to the bending area 10, the glass
  • the light incident surface 102 of the substrate 1 includes a flat part, a slope part and a curved surface part.
  • the curved surface part is formed by rounding the intersection of the light incident surface 102 and the side surface 103 .
  • the light-emitting surface 101 and the light-incident surface 102 of the glass substrate 1 are arranged symmetrically.
  • the first optical resin coating 2, the second optical resin coating 3 and the third optical resin coating 6 are made of the same material, and the first optical resin coating 2
  • the difference between the refractive index and the refractive index of the glass substrate 1 is less than or equal to 0.01, which prevents the glass substrate 1, the first optical resin coating 2, the second optical resin coating 3, and the third Interface traces are generated at the interface between any two adjacent structures in the optical resin coating 6 .
  • the refractive index of the first optical resin coating 2 is n, 1.50 ⁇ n ⁇ 1.54, but it is not limited to this.
  • the transmittance of the first optical resin coating 2 is greater than or equal to 90%.
  • the first optical resin coating 2 is made of polyester, polyurethane, thermoplastic polyurethane, polyamide, polyimide, polymethylmethacrylate, polypropylene, or polyethylene.
  • the first sample the thickness of the glass substrate 1 is 100um, the edge of the glass substrate 1 is the chamfered structure in Figure 11, and the first flexible film material 4 is made of ultra-thin glass (UTG) with a thickness of 30um , the first flexible film material 4 is connected to the glass substrate 1 through optical adhesive (OCA) with a thickness of 50um, and the first optical resin coating 2 is made of polyurethane, dimethylformamide, butyl acetate, benzene It is composed of vinyltrimethoxysilane coupling agent, defoaming agent and leveling agent.
  • the composition mass ratio is 60:130:30:10:1:1.
  • the refractive index of the first optical resin coating is 1.513.
  • the second sample the thickness of the glass substrate 1 is 200um, the edge of the glass substrate 1 is the chamfered structure in Figure 11, the first flexible film material 4 is made of ultra-thin glass with a thickness of 30um, the The first flexible film material 4 is connected to the glass substrate 1 through optical adhesive (OCA) with a thickness of 50um.
  • the first optical resin coating 2 is made of polyurethane, dimethylformamide, butyl acetate, styrene-based trimethylmethacrylate It is composed of an oxysilane coupling agent, a defoaming agent and a leveling agent, with a mass ratio of 60:130:30:10:1:1.
  • the refractive index of the first optical resin coating is 1.513.
  • the third sample the thickness of the glass substrate 1 is 100um, the edge of the glass substrate 1 is the chamfered structure in Figure 11, the first flexible film material 4 is made of ultra-thin glass with a thickness of 50um, the The first flexible film material 4 is connected to the glass substrate 1 through optical adhesive (OCA) with a thickness of 50um.
  • the first optical resin coating 2 is made of polyurethane, dimethylformamide, butyl acetate, styrene-based trimethylmethacrylate It is composed of an oxysilane coupling agent, a defoaming agent and a leveling agent, with a mass ratio of 60:130:30:10:1:1.
  • the refractive index of the first optical resin coating is 1.513.
  • the fourth sample the thickness of the glass substrate 1 is 100um, the edge of the glass substrate 1 is the chamfered structure in Figure 11, the first flexible film material 4 is made of PET with a thickness of 50um, the The first flexible film material 4 is connected to the glass substrate 1 through optical adhesive (OCA) with a thickness of 50um.
  • the first optical resin coating 2 is made of polyurethane, dimethylformamide, butyl acetate, styrene-based trimethylmethacrylate It is composed of an oxysilane coupling agent, a defoaming agent and a leveling agent, with a mass ratio of 60:130:30:10:1:1.
  • the refractive index of the first optical resin coating is 1.513.
  • Comparative sample 1 in the related art the cover plate is made of only ultra-thin glass with a thickness of 30um.
  • Comparative sample 2 in the related art the cover plate is made of only ultra-thin glass with a thickness of 70um.
  • test surfaces of the first sample and the second sample are both the side where the first flexible membrane material 4 is not provided, and the test surfaces of the third sample and the fourth sample are The test surface is the side of the first flexible film material 4 away from the glass substrate 1 . And when the first sample, the second sample, the third sample and the fourth sample were subjected to impact testing, no other film layer was attached to the outer surface (ie, the test surface).
  • the first to fourth samples include a cover plate and a display panel assembled together, and the first optical resin coating is provided in the bending area of the first to fourth samples.
  • the non-bending area is equipped with a thicker glass substrate. During the test, if a bright spot appears on the test sample or the glass substrate breaks, the corresponding result will be recorded.
  • Comparative Sample 1 and Comparative Sample 2 were bonded with CPI with a thickness of 80um and OCA with a thickness of 50um (the comparative sample includes ultra-thin glass and is placed on the ultra-thin glass through OCA).
  • the test results are also shown in the following table:
  • the test equipment is a Chenguang pen
  • the evaluation standard is ultra-thin glass or glass substrate breakage
  • the evaluation standard for the comparison sample is ultra-thin glass breakage
  • the evaluation standard for the first to fourth samples is There are bright spots on the display or the glass substrate is broken
  • the test starts from a height of 0.5cm, and multiple tests are performed in increments of 0.5cm.
  • For the comparison sample record the pen-down height of CPI dents and ultra-thin fractures.
  • For the tests of the first to fourth samples record the pen-down height where bright spots appear or the glass substrate is broken;
  • the evaluation criterion for the comparison sample is the breakage of the ultra-thin glass
  • the evaluation criterion for the first to fourth samples is whether the evaluation equipment displays bright spots or the glass substrate is broken.
  • the evaluation equipment is an extrusion testing machine
  • the test indenter is a spherical indenter with a diameter of 1.2 mm (the indenter material is stainless steel).
  • test points For each test point, bring the test indenter close to the sample at a speed of 10mm/min. After contacting the sample, press the test head at 1kg, 1.5kg, and 2kg respectively. . . Press the sample with equal load and stay at each test point for 10 seconds.
  • the record shows that bright spots appear or the glass substrate breaks. load during cracking.
  • the extrusion test is carried out.
  • the load corresponding to the appearance of bright spots is 19kg.
  • the load corresponding to the appearance of bright spots or the glass substrate is broken is 46kg.
  • the test results in different areas are that the ultra-thin glass shattered at 8kg.
  • the evaluation standard is that the pencil hardness is greater than or equal to 7, and the evaluation equipment is a pencil hardness tester.
  • the test method is as follows: Before testing, it is necessary to check that the product appearance does not have discoloration, bubbles, cracks, peeling and other defects, and use a dust-free cloth to clean it. Wipe the surface of the sample clean; sharpen the triangular pencil lead into a cylinder with a diameter of 3mm. Hold the pencil so that the end face of the pencil lead is 90 degrees perpendicular to the 400-grit sandpaper, and then slowly draw circles until the end face of the lead is flat and the edges are sharp.
  • the evaluation criteria are the deflection of the stacked structure or the shattering of the glass substrate (for the comparison sample, ultra-thin glass).
  • the first sample is dynamically bent 20W times, with a minimum bending The radius is 2mm.
  • Comparative sample 1 is dynamically bent 20W times, and the minimum bending radius is 0.5mm.
  • the cover plate of this embodiment has strong bending performance in the bending area and is non-bending.
  • the impact resistance of the area is strong, which solves the problem of not balancing the bending performance and impact resistance.
  • embodiments of the present disclosure also provide a display module, including a display panel 100 and the above-mentioned cover plate located on the light emitting side of the display panel 100 .
  • the display panel 100 includes a binding area, which is bent to the backlight side of the display panel 100 to be bound and connected to the main circuit board.
  • the binding area is close to the cover plate.
  • a protective adhesive layer 200 is provided on one side;
  • the orthographic projection of the binding area on the cover plate completely coincides with the cover plate, or the orthographic projection of the binding area on the cover plate is located in the first area of the cover plate, and the cover plate
  • the panel includes an edge area exposed at the periphery of the first area.
  • the cover since the cover has a certain degree of flexibility, if the cover is flush with or expanded relative to the Bending area (binding area) of the display panel, after the Pad Bending process, the cover and MCL glue (i.e., the protection The risk of adhesion of the adhesive layer 200) may cause display abnormalities and other problems. Therefore, in the related art, the edge of the cover plate is retracted relative to the edge of the binding area. Although this structural design avoids the risk of adhesion between the cover plate and the protective adhesive layer 200, on the one hand, the protective adhesive layer 200 and the binding area are exposed to the outer edge. There is still a risk of collision during subsequent processes such as assembling the whole machine.
  • the entire middle frame 300 covers the surface of the cover 400 from top to bottom (the middle frame 300 covers part of the cover 400), which is equivalent to The entire screen is recessed within the middle frame 300, which affects the aesthetics and screen-to-body ratio. See Figure 16.
  • a glass substrate 1 whose rigidity and stiffness are better than that of ultra-thin glass is used in the non-bending area 20 (the glass The thickness of the substrate 1 is greater than or equal to 300um), and the edge of the cover plate can be flush with or appropriately expanded relative to the edge of the binding area, that is, the orthographic projection of the binding area on the cover plate is in line with the edge of the cover plate.
  • Completely coincident, or the orthographic projection of the binding area on the cover plate is located in the first area of the cover plate, and the cover plate includes an edge area exposed at the periphery of the first area.
  • the cover plate has strong support, and there is no need to consider the adhesion problem between the cover plate and the protective adhesive layer 200; and the binding area can be effectively protected from the front from impact during subsequent processes such as complete machine assembly.
  • the cover 400 includes an edge area exposed on the periphery of the first area, and the middle frame 300 of the display module is connected to a side of the edge area close to the display panel.
  • the entire middle frame is located on the backlight side of the cover to increase the screen-to-body ratio of the entire machine.
  • An embodiment of the present disclosure also provides a display device, including the above display module.

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Abstract

一种盖板，包括盖板主体，盖板主体包括弯折区(10)和位于弯折区(10)的两侧的非弯折区(20)，非弯折区(20)包括玻璃基板(1)，弯折区(10)包括采用光学树脂材料通过涂布工艺形成的第一光学树脂涂层(2)。一种显示模组和显示装置。盖板主体至少包括第一光学树脂涂层(2)和玻璃基板(1)两种结构，在弯折区(10)设置弯折性能较强的第一光学树脂涂层(2)，在非弯折区(20)设置抗冲击性能较强的玻璃基板(1)，解决盖板仅采用玻璃基板(1)从而弯折性能和抗冲击性能无法兼顾的问题。

Description

盖板、显示模组和显示装置 技术领域
本公开涉及显示产品制作技术领域，尤其涉及一种盖板、显示模组和显示装置。
背景技术
当玻璃厚度达到100um以下时，玻璃的柔性得以展现，目前，超薄柔性玻璃已成为折叠显示盖板的核心部件。相比较高分子材料，玻璃材料具有较高的杨氏模量，弯折后形变恢复的能力优于高分子材料，应用于折叠屏，可明显改善折叠显示屏的折痕问题。但是，为保证折叠显示屏具有良好的弯折性能，这就要求玻璃的厚度要做到很薄，目前使用较为多的超薄玻璃的厚度基本在30～70um。然而，当玻璃厚度达到70um及以下时，玻璃的抗冲击强度极弱，即玻璃的抗冲击强度与弯折性能不能同时得到兼顾。
与常规的刚性手机盖板玻璃相比，超薄柔性玻璃的价格高昂，其价格可能高出数十倍，如何能使用较厚的玻璃来替代或部分替代超薄柔性玻璃已成为一个热度较高的研究方向。
发明内容
为了解决上述技术问题，本公开提供一种盖板、显示模组和显示装置，解决盖板采用玻璃制成，抗冲击强度与弯折性能不能兼顾的问题。
为了达到上述目的，本公开实施例采用的技术方案是：一种盖板，包括盖板主体，所述盖板主体包括弯折区和位于所述弯折区的两侧的非弯折区，所述非弯折区包括玻璃基板，所述弯折区包括采用光学树脂材料通过涂布工艺形成的第一光学树脂涂层。
可选的，所述盖板主体沿其厚度方向包括相对设置的第一侧和第二侧，从所述第一侧到所述第二侧的方向，所述弯折区包括所述玻璃基板和涂布于所述玻璃基板上的第二光学树脂涂层；
所述第一光学树脂涂层具有位于所述第二侧的第一表面，所述第二光学树 脂涂层具有位于所述第二侧的第二表面，所述第一表面与所述第二表面位于同一平面。
可选的，所述玻璃基板具有位于所述第一侧的第三表面，所述第一光学树脂涂层包括位于所述第一侧的第四表面，所述第三表面和所述第四表面位于同一平面。
可选的，所述盖板主体的所述第一侧通过光学胶层粘接有第一柔性膜材，或者所述盖板主体的所述第二侧通过光学胶层粘接有第一柔性膜材。
可选的，所述第一柔性膜材采用PET、CPI、PMMA或超薄玻璃制成。
可选的，所述第一柔性膜材的厚度小于或等于20um。
可选的，所述盖板主体还包括位于所述弯折区和所述非弯折区之间的过渡区，所述过渡区包括涂布有第三光学树脂涂层，所述第三光学树脂涂层包括位于所述第二侧的第五表面，所述第五表面与所述第二表面位于同一平面；
所述玻璃基板具有位于所述第一侧的第三表面，所述第三光学树脂涂层包括位于所述第一侧的第六表面，所述第六表面与所述第三表面位于同一平面。
可选的，从所述第一侧到所述第二侧的方向，所述弯折区包括第二柔性膜材和涂布于所述第二柔性膜材上的所述第一光学树脂涂层。
可选的，所述第二柔性膜材采用PET、CPI、PMMA或超薄玻璃制成。
可选的，所述第二柔性膜材的厚度小于或等于70um。
可选的，所述盖板主体的所述第一侧通过光学胶层粘接有第三柔性膜材；或者所述盖板主体的所述第二侧通过光学胶层粘接有第三柔性膜材。
可选的，所述第三柔性膜材采用采用PET、CPI、PMMA或超薄玻璃制成。
可选的，所述玻璃基板的厚度大于或等于300um。
可选的，所述玻璃基板包括靠近所述弯折区设置的侧面和与所述侧面相邻的入光面和出光面，所述入光面用于接收显示面板发出的光；
所述出光面与所述侧面相交的边缘进行倒角或圆角设置，和/或所述入光面与所述侧面相交的边缘进行倒角或圆角设置。
可选的，所述玻璃基板靠近所述弯折区的一端在所述盖板主体的厚度方向上的截面为1/2椭圆形，或所述玻璃基板靠近所述弯折区的一端在所述盖板主体的厚度方向上的截面为1/4椭圆形，且所述1/4椭圆形朝向远离所述入光面 的方向凸出设置。
可选的，从所述非弯折区到所述弯折区的方向，所述玻璃基板的出光面包括平面部分、斜面部分和弧面部分，所述弧面部分是由所述出光面和所述侧面相交处进行圆角处理形成；和/或，从所述非弯折区到所述弯折区的方向，所述玻璃基板的入光面包括平面部分、斜面部分和弧面部分，所述弧面部分是由所述入光面和所述侧面相交处进行圆角处理形成。
可选的，所述第一光学树脂涂层、所述第二光学树脂涂层和所述第三光学树脂涂层采用相同的材料制成，所述第一光学树脂涂层的折射率与所述玻璃基板的折射率的差值小于或等于0.01。
可选的，所述第一光学树脂涂层的折射率为n，1.50≤n≤1.54。
可选的，所述第一光学树脂涂层的透过率大于或等于90％。
可选的，所述第一光学树脂涂层的材料采用聚酯类、聚氨酯类、热塑性聚氨酯类、聚酰胺类、聚酰亚胺类、聚甲丙烯酸甲酯类、聚丙烯类、聚乙烯类、聚丙烯类、聚氯乙烯类、聚苯乙烯类、苯乙烯类、聚甲醛类、聚苯醚类、聚苯硫醚类、聚砜类、聚芳醚酮类、苯乙烯类、聚烯烃类、聚烯烃类等材料中的一种或多种。
本公开实施例还提供一种显示模组，包括显示面板和位于所述显示面板出光侧的上述的盖板。
可选的，所述显示面板包括绑定区，所述绑定区弯折至所述显示面板的背光侧以与主电路板绑定连接，所述绑定区靠近所述盖板的一侧设置有保护胶层；
所述绑定区在所述盖板上的正投影与所述盖板完全重合，或者所述绑定区在所述盖板上的正投影位于所述盖板的第一区域，所述盖板包括外露于所述第一区域外围的边缘区域。
可选的，所述盖板包括外露于所述第一区域外围的边缘区域，所述显示模组的中框与所述边缘区域靠近所述显示面板的一侧连接。
本公开实施例还提供一种显示装置，包括上述的显示模组。
本公开的有益效果是：所述盖板主体至少包括第一光学树脂涂层和玻璃基板两种结构，在弯折区设置弯折性能较强的所述第一光学树脂涂层，在非弯折区设置抗冲击性能较强的玻璃基板，解决盖板仅采用玻璃基板从而弯折性能和 抗冲击性能无法兼顾的问题。
附图说明
图1表示本公开实施例中盖板的折叠状态示意图一；
图2表示本公开实施例中盖板的展平状态示意图一；
图3表示本公开实施例中盖板的展平状态示意图二；
图4表示本公开实施例中盖板的展平状态示意图三；
图5表示本公开实施例中盖板的折叠状态示意图二；
图6表示本公开实施例中盖板的展平状态示意图四；
图7表示本公开实施例中盖板的展平状态示意图五；
图8表示本公开实施例中的显示模组的结构示意图一；
图9表示本公开实施例中的显示模组的结构示意图二；
图10表示本公开实施例中的显示模组的结构示意图三；
图11表示本公开实施例中的玻璃基板的结构示意图一；
图12表示本公开实施例中的玻璃基板的结构示意图二；
图13表示本公开实施例中的玻璃基板的结构示意图三；
图14表示本公开实施例中的玻璃基板的结构示意图四；
图15表示本公开实施例中的玻璃基板的结构示意图五；
图16表示本公开实施例中盖板与中框的组装状态示意图一；
图17表示本公开实施例中盖板与中框的组装状态示意图二；
图18表示本公开实施例中盖板弯折为水滴形的状态示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
在本公开的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、 “右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
参考图1-图15，本实施例中提供一种盖板，包括盖板主体，所述盖板主体包括弯折区10和位于所述弯折区10的两侧的非弯折区20，所述非弯折区20包括玻璃基板1，所述弯折区10包括采用光学树脂材料通过涂布工艺形成的第一光学树脂涂层2。
相关技术中，为保证折叠显示屏具有良好的弯折性能，要求玻璃的厚度要做到很薄，相关技术中使用较为多的超薄玻璃的厚度基本在30～70um。然而，当玻璃厚度达到70um及以下时，玻璃的抗冲击强度极弱，即玻璃的抗冲击强度与弯折性能不能同时得到兼顾。本实施例中，所述盖板主体将所述第一树脂涂层和玻璃基板1进行结合，在所述弯折区10设置弯折性能较强的所述第一光学树脂涂层2，在所述非弯折区20设置抗冲击性能较强的玻璃基板1，由于仅仅将玻璃基板1设置于非弯折区20，而非弯折区是不需要弯折的，所述玻璃基板1的厚度可以根据抗冲击性能的要求设置其厚度，不需要采用超薄玻璃，例如所述玻璃基板1的厚度可以大于或等于300um，也就是说，采用在所述弯折区20设置第一光学树脂涂层2和在所述非弯折区10设置玻璃基板1两种结构相结合的方式，既可以保证盖板良好的弯折性能，又可以保证盖板良好的抗冲击性能。
参考图1和图2，图1表示盖板的折叠状态示意图，图2表示盖板的展开状态示意图，图1中的盖板在折叠状态时呈U形结构，EF段和F’E’段为非弯折区20，FP-PF’段为弯折区10；其中EF和F’E’段由于不需要弯折，故可采用所述玻璃基板1(此处的玻璃基板1为常规的玻璃即可，而不需要采用超薄玻璃)，可大幅提高非弯折区20冲击强度，FP-PF’段可由光学树脂涂布、固化后形成所述第一光学树脂涂层2进行填充，保证弯折性能。
示例性的，为了保证盖板的抗冲击性能，所述玻璃基板1的厚度大于或等于300um，但并不以此为限。
所述第一光学树脂涂层2是通过涂布工艺涂布后、固化形成，弯折性能强。所述第一光学树脂涂层2的材料可以为聚酯类、聚氨酯类、热塑性聚氨酯类、聚酰胺类、聚酰亚胺类、聚甲丙烯酸甲酯类、聚丙烯类、聚乙烯类、聚丙烯类、聚氯乙烯类、聚苯乙烯类、苯乙烯类、聚甲醛类、聚苯醚类、聚苯硫醚类、聚砜类、聚芳醚酮类、苯乙烯类、聚烯烃类、聚烯烃类等材料中的一种或多种。
示例性的，在所述弯折区10可采用所述第一光学树脂涂层2完全填充，参考图2，但并不以此为限，例如在一些实施方式中，为了加强所述弯折区10的抗冲击性能，也可以在所述弯折区10增设柔性膜材(所述柔性膜材嵌设于所述第一光学树脂涂层2内)，但是柔性膜材的厚度要较小，以保证所述弯折区10的弯折性能，例如可以小于70um，但并不以此为限。
示例性的，所述盖板主体沿其厚度方向包括相对设置的第一侧和第二侧，从所述第一侧到所述第二侧的方向，所述弯折区10包括所述玻璃基板1和涂布于所述玻璃基板1上的第二光学树脂涂层3；
所述第一光学树脂涂层2具有位于所述第二侧的第一表面，所述第二光学树脂涂层3具有位于所述第二侧的第二表面，所述第一表面与所述第二表面位于同一平面，参考图2-图4。
所述第二光学树脂涂层3的设置是为了弥补所述玻璃基板1和所述第一光学树脂涂层2之间的段差，保证所述盖板主体的所述第二侧的平坦性。
示例性的，所述第一光学树脂涂层2和所述第二光学树脂涂层3为一体结构，所述第一光学树脂涂层2和所述第二光学树脂涂层3采用同步工艺形成。
示例性的，为了保证所述玻璃基板1和所述第一光学树脂涂层2或所述第二光学树脂涂层3的交界处无界面痕迹，所述第一光学树脂涂层2和所述第二光学树脂涂层3采用相同的材料制成，且所述第一光学树脂涂层2和所述玻璃基板1的折射率之差小于或等于0.01，例如所述第一光学树脂涂层2的折射率为n，1.50≤n≤1.54，但并不以此为限。
示例性的，所述玻璃基板1具有位于所述第一侧的第三表面，所述第一光学树脂涂层2包括位于所述第一侧的第四表面，所述第三表面和所述第四表面位于同一平面。
示例性的，所述盖板主体的所述第一侧通过光学胶层粘接有第一柔性膜材 4，和/或所述盖板主体的所述第二侧通过光学胶层粘接有第一柔性膜材4，参考图3和图4。
示例性的，所述第一柔性膜材4可以采用PET(聚对苯二甲酸乙二醇酯)、CPI(聚酰亚胺)、PMMA(聚甲基丙烯酸甲酯)等有机材料制成，或采用超薄玻璃制成。可兼具耐冲击性、耐刮擦性、耐弯折性和表面硬度。
示例性的，所述第一柔性膜材4的厚度50-80um。
图3中表示出了在所述第一侧设置所述第一柔性膜材的示例，图4中表示出了在所述第二侧设置所述第一柔性膜材的示例。需要说明的是，所述第一柔性膜材设置于所述盖板主体用于与显示面板连接的一侧，则所述第一柔性膜材的设置可以对显示面板起到保护作用，增强显示面板整体的抗冲击性能，所述第一柔性膜材设置于所述盖板主体的与显示面板连接的一侧相对的一侧，即所述第一柔性膜材设置于所述盖板主体远离显示面板的一侧，则所述第一柔性膜材对所述盖板主体、所述显示面板均起到保护作用，提高显示模组的抗冲击性能，且所述第一柔性膜材可以作为人机交互面，增强耐摩擦性能。
需要说明的是，由于超薄玻璃易碎，因此，在一些实施方式中，所述第一柔性膜材设置于所述盖板主体远离显示面板的一侧时，所述第一柔性膜材的材质采用采用PET(聚对苯二甲酸乙二醇酯)、CPI(聚酰亚胺)、PMMA(聚甲基丙烯酸甲酯)等有机材料制成。
参考图5-图10，示例性的，所述盖板主体还包括位于所述弯折区10和所述非弯折区20之间的过渡区30，所述过渡区30包括第三光学树脂涂层6，所述第三光学树脂涂层6包括位于所述第二侧的第五表面，所述第五表面与所述第二表面位于同一平面；
所述玻璃基板1具有位于所述第一侧的第三表面，所述第三光学树脂涂层6包括位于所述第一侧的第六表面，所述第六表面与所述第三表面位于同一平面。
对于折叠状态时呈水滴形的所述盖板，所述过渡区30受到的拉应力最大，在弯折过程中容易产生裂痕，对此，本实施例中，在所述过渡区30设置所述第三光学树脂涂层6，且所述过渡区30被所述第三光学树脂涂层6完全填充，保证所述过渡区30的弯折性能，以避免在弯折过程中产生裂痕等。
示例性的，从所述第一侧到所述第二侧的方向，所述弯折区10包括第二柔性膜材7和涂布于所述第二柔性膜材7上的所述第一光学树脂涂层2。
所述弯折区10受到的压应力最大，采用所述第一光学树脂涂层2和所述第二柔性膜材7相结合的方式，可以增加所述弯折区10的抗压能力，并且保证其弯折性能。
示例性的，所述第二柔性膜材7可以采用PET(聚对苯二甲酸乙二醇酯)、CPI(聚酰亚胺)、PMMA(聚甲基丙烯酸甲酯)等有机材料制成，或采用超薄玻璃制成。可兼具耐冲击性、耐刮擦性、耐弯折性和表面硬度。
所述盖板主体的所述第一侧或所述第二侧用于与显示面板连接，需要说明的是，所述盖板主体的所述第一侧用于与显示面板连接时，由于超薄玻璃易碎，在一些实施方式中，所述第二柔性膜材采用PET(聚对苯二甲酸乙二醇酯)、CPI(聚酰亚胺)、PMMA(聚甲基丙烯酸甲酯)等有机材料制成。
示例性的，所述盖板主体的所述第一侧通过光学胶层粘接有第三柔性膜材8；和/或所述盖板主体的所述第二侧通过光学胶层粘接有第三柔性膜材8。
示例性的，所述第三柔性膜材8可以采用PET(聚对苯二甲酸乙二醇酯)、CPI(聚酰亚胺)、PMMA(聚甲基丙烯酸甲酯)等有机材料制成，或采用超薄玻璃制成。可兼具耐冲击性、耐刮擦性、耐弯折性和表面硬度。
示例性的，所述第三柔性膜材8的厚度为50-80um。
需要说明的是，所述第三柔性膜材设置于所述盖板主体用于与显示面板连接的一侧，则所述第三柔性膜材8的设置可以对显示面板起到保护作用，增强显示面板整体的抗冲击性能，所述第三柔性膜材8设置于所述盖板主体的与显示面板连接的一侧相对的一侧，即所述第三柔性膜材8设置于所述盖板主体远离显示面板的一侧，则所述第三柔性膜材8对所述盖板主体、所述显示面板均起到保护作用，提高显示模组的抗冲击性能，且所述第三柔性膜材8可以作为人机交互面，增强耐摩擦性能。
需要说明的是，由于超薄玻璃易碎，因此，在一些实施方式中，所述第三柔性膜材8设置于所述盖板主体远离显示面板的一侧时，所述第三柔性膜材8的材质采用采用PET(聚对苯二甲酸乙二醇酯)、CPI(聚酰亚胺)、PMMA(聚甲基丙烯酸甲酯)等有机材料制成。
在一些实施方式中，所述盖板主体的所述第一侧用于与显示面板连接，所述第二侧设置所述第三柔性膜材8，由于所述第三柔性膜材8的设置，所述第二柔性膜材7可以采用超薄玻璃制成，所述第三柔性膜材8起到保护作用。
参考图7-图9，图7和图8中表示所述盖板主体的所述第一侧用于与显示面板连接，所述第二侧通过光学胶层粘接有第三柔性膜材8。对比图7和图8，图7所示的结构抗冲击性能强，耐摩擦性能强，图8中所示的结构，所述非弯折区的硬度大，而图10中所示的结构使得显示模组整体的厚度减薄。
参考图5，起弯区(即所述过渡区30)所受拉应力最大，即弯折过程中产生Peeling的风险最大。同时，弯曲曲率最小处(即所述弯折区10)所受压应力最大。所述过渡区30即图6所示BC段和C’B’段，考虑到所述过渡区30存在Peeling风险，所述过渡区30通过所述第三光学树脂涂层6完全填充(即所述过渡区30仅包括所述第三光学树脂涂层6，参考图6和图7)。考虑到弯折过程中压应力最大处(即所述弯折区10)为CO和OC’段，结合无机材料基础知识，玻璃材料耐压应力强度是耐张应力强度的10倍，将CO和OC’段用可弯折的第二柔性膜材7填充，即所述弯折区10采用所述第一光学树脂涂层2和所述第二柔性膜材7(所述第二柔性膜材7的厚度可以选择小于或等于70um，但并不以此为限)相结合的方式；考虑到所述非弯折区20即AB和B’A’段在弯折过程中不受弯折半径和弯折次数的影响，选用厚度较厚的常规盖板玻璃(即所述玻璃基板1，所述玻璃基板1的厚度可大于或等于300um，但并不以此为限)。采用上述方案，既能满足所述非弯折区20的高冲击强度和所述弯折区10的弯折强度，又通过所述第三光学树脂涂层6的设置规避了所述过渡区30弯折时张应力过大导致的Peeling风险。
参考图18，需要说明的是，弯折时受张应力最大的点位于水滴起弧区(，参考图18中两条虚线之间的区域)，所述起弧区的弧长为L：
Figure PCTCN2022093292-appb-000001
其中，ɑ为盖板弯折为水滴形的水滴角度；r为水滴起弧半径，参考图18。
需要说明的是，图6中BC段(即所述过渡区)在Y方向上的最小值为L(即所述过渡区在Y方向上内的最小值，Y方向与从所述弯折区到所述非弯折区的方向相垂直)。即所述BC段的长度a大于或等于L，当BC段在Y方向上的宽度大于或等于水滴状起弧区的弧长时，对应于整个起弧区的区域采用 光学树脂涂层(即所述第三光学树脂涂层)，避免了由于弯折时该部位局部张应力过大导致的Peeling风险。
示例性的，所述第三光学树脂涂层6和所述第一光学树脂涂层2可采用同步工艺一体成型，所述第二光学树脂涂层3和所述第一光学树脂涂层2、所述第三光学树脂涂层6可采用同步工艺一体成型，保证所述盖板的第二侧的平坦性，使得所述盖板在折叠状态时形成完整的水滴形态的柔性盖板。
示例性的，所述盖板主体的所述第二侧用于与显示面板连接，所述第二柔性膜材7采用超薄玻璃制成。
所述盖板主体的所述第一侧远离显示面板设置，所述第二柔性膜材7采用超薄玻璃制成，在保证所述弯折区10的弯折性能的同时，可以增强所述弯折区10的耐冲击性能。
示例性的，所述第二柔性膜材7的厚度小于或等于70um。
参考图11-图15，示例性的，所述玻璃基板1包括靠近所述弯折区10设置的侧面103和与所述侧面103相邻的入光面102和出光面101，所述入光面102用于接收显示面板发出的光；
所述出光面101与所述侧面103相交的边缘进行倒角或圆角设置，和/或所述入光面102与所述侧面103相交的边缘进行倒角或圆角设置。
倒角或圆角设置相对于直角设置，可防止亮暗不明的现象的发生。
图11中，所述出光面101与所述侧面103相交的边缘进行倒角设置，和所述入光面102与所述侧面103相交的边缘进行倒角设置。其中，1t≤a≤1.9t，0.22t≤b≤0.42t，0.16t≤c≤0.56t。
图14中，所述出光面101与所述侧面103相交的边缘进行圆角设置，和所述入光面102与所述侧面103相交的边缘进行圆角设置。其中0.1t≤g＜t，0.1t≤h≤0.8t。
示例性的，所述玻璃基板1靠近所述弯折区10的一端在所述盖板主体的厚度方向上的截面为1/2椭圆形，或所述玻璃基板1靠近所述弯折区10的一端在所述盖板主体的厚度方向上的截面为1/4椭圆形，且所述1/4椭圆形朝向远离所述入光面102的方向凸出设置。
图12中，所述玻璃基板1靠近所述弯折区10的一端在所述盖板主体的厚 度方向上的截面为1/4椭圆形，其中1/4椭圆形的半长轴为d，1/4椭圆形的半短轴为e，0.5t≤d≤1.5t，0.5t≤e≤1.5t。
图13中，所述玻璃基板1靠近所述弯折区10的一端在所述盖板主体的厚度方向上的截面为1/2椭圆形，其中1/2椭圆形额半长轴为f，1/2椭圆形额半短轴为f1，0.5t≤f≤4t，f1＝t。
参考图15，示例性的，从所述非弯折区20到所述弯折区10的方向，所述玻璃基板1的出光面101包括平面部分1011、斜面部分1012和弧面部分1013，所述弧面部分1013是由所述出光面101和所述侧面103相交处进行圆角处理形成；和/或，从所述非弯折区20到所述弯折区10的方向，所述玻璃基板1的入光面102包括平面部分、斜面部分和弧面部分，所述弧面部分是由所述入光面102和所述侧面103相交处进行圆角处理形成。
示例性的，所述玻璃基板1的所述出光面101和所述入光面102对称设置。
示例性的，所述第一光学树脂涂层2、所述第二光学树脂涂层3和所述第三光学树脂涂层6采用相同的材料制成，所述第一光学树脂涂层2的折射率与所述玻璃基板1的折射率的差值小于或等于0.01，避免所述玻璃基板1、所述第一光学树脂涂层2、所述第二光学树脂涂层3、所述第三光学树脂涂层6中任意两个相邻的结构的交界处产生界面痕迹。
示例性的，所述第一光学树脂涂层2的折射率为n，1.50≤n≤1.54，但并不以此为限。
示例性的，所述第一光学树脂涂层2的透过率大于或等于90％。
示例性的，所述第一光学树脂涂层2的材料采用聚酯类、聚氨酯类、热塑性聚氨酯类、聚酰胺类、聚酰亚胺类、聚甲丙烯酸甲酯类、聚丙烯类、聚乙烯类、聚丙烯类、聚氯乙烯类、聚苯乙烯类、苯乙烯类、聚甲醛类、聚苯醚类、聚苯硫醚类、聚砜类、聚芳醚酮类、苯乙烯类、聚烯烃类、聚烯烃类等材料中的一种或多种。
以下以图3所示的盖板的结构为例，选取不同参数的样品与相关技术中仅采用超薄玻璃制成的盖板进行对比测试。
第一种样品：所述玻璃基板1的厚度为100um，所述玻璃基板1的边缘为图11中的倒角结构，所述第一柔性膜材4采用厚度为30um的超薄玻璃(UTG)， 所述第一柔性膜材4通过厚度为50um的光学胶(OCA)与所述玻璃基板1连接，所述第一光学树脂涂层2由聚氨酯、二甲基甲酰胺、醋酸丁酯、苯乙烯基三甲氧基硅烷偶联剂、消泡剂和流平剂组成，组成质量比例为60:130:30:10:1:1，所述第一光学树脂涂层的折射率为1.513。
第二种样品：所述玻璃基板1的厚度为200um，所述玻璃基板1的边缘为图11中的倒角结构，所述第一柔性膜材4采用厚度为30um的超薄玻璃，所述第一柔性膜材4通过厚度为50um的光学胶(OCA)与所述玻璃基板1连接，所述第一光学树脂涂层2由聚氨酯、二甲基甲酰胺、醋酸丁酯、苯乙烯基三甲氧基硅烷偶联剂、消泡剂和流平剂组成，组成质量比例为60:130:30:10:1:1，所述第一光学树脂涂层的折射率为1.513。
第三种样品：所述玻璃基板1的厚度为100um，所述玻璃基板1的边缘为图11中的倒角结构，所述第一柔性膜材4采用厚度为50um的超薄玻璃，所述第一柔性膜材4通过厚度为50um的光学胶(OCA)与所述玻璃基板1连接，所述第一光学树脂涂层2由聚氨酯、二甲基甲酰胺、醋酸丁酯、苯乙烯基三甲氧基硅烷偶联剂、消泡剂和流平剂组成，组成质量比例为60:130:30:10:1:1，所述第一光学树脂涂层的折射率为1.513。
第四种样品：所述玻璃基板1的厚度为100um，所述玻璃基板1的边缘为图11中的倒角结构，所述第一柔性膜材4采用厚度为50um的PET制成，所述第一柔性膜材4通过厚度为50um的光学胶(OCA)与所述玻璃基板1连接，所述第一光学树脂涂层2由聚氨酯、二甲基甲酰胺、醋酸丁酯、苯乙烯基三甲氧基硅烷偶联剂、消泡剂和流平剂组成，组成质量比例为60:130:30:10:1:1，所述第一光学树脂涂层的折射率为1.513。
相关技术中的对比样品1：仅采用厚度为30um的超薄玻璃制成盖板。
相关技术中的对比样品2：仅采用厚度为70um的超薄玻璃制成盖板。
需要说明的是，所述第一种样品、所述第二种样品的测试面均为未设置所述第一柔性膜材4的一面，所述第三种样品和所述第四种样品的测试面均为所述第一柔性膜材4远离所述玻璃基板1的一面。且所述第一种样品、所述第二种样品、所述第三种样品和所述第四种样品进行冲击测试时均未在外表面(即测试面)贴合其他膜层。
需要说明的是，第一种样品至第四种样品中，包括组装在一起的盖板与显示面板，第一种样品至第四种样品中弯折区设置的是第一光学树脂涂层，非弯折区设置的是厚度较大的玻璃基板，在进行测试时，测试样品出现亮点或是玻璃基板碎裂这两种情况出现一种则记录相应的结果。
需要说明的是，对比样品1和对比样品2在进行冲击测试时，外表面均贴合厚度为80um的CPI和厚度为50um的OCA(所述对比样品包括超薄玻璃通过OCA设置于超薄玻璃的第一侧的CPI膜层和通过OCA设置于超薄玻璃的第二侧的PET层)，其测试结果同样如下表所示：
Figure PCTCN2022093292-appb-000002
其中，进行落笔测试时，测试设备为晨光笔，评价标准为超薄玻璃或玻璃基板碎裂(对比样品的评价标准是超薄玻璃碎裂，第一种样品至第四种样品的评价标准是显示出现亮点或者玻璃基板碎裂)，测试方法如下：
选取测试点，控制质量为12g(笔尖直径为5mm)的晨光笔，笔尖朝下并从指定的高度垂直落下，其中，从0.5cm高度开始测试，并以0.5cm为单位递增进行多次测试，对于对比样品记录CPI凹痕和超薄碎裂的落笔高度，对于第一种样品至第四种样品的测试，记录显示出现亮点或者玻璃基板碎裂的落笔高度；
落笔冲击完成后对盖板的外观进行检验，并记录测试结果；
选取不同的测试点，通过上述步骤进行测试，并记录测试结果。
在上述表格中，对于第一种样品，对于所述弯折区的测试，从15cm的高度落下时，显示出现亮点，对于非弯折区的测试，从50cm的高度落下时，显示出现亮点或者玻璃基板碎裂。对于对比样品1，对于不同区域的测试均是从18cm的高度落下，超薄玻璃碎裂。
进行挤压测试时，对于对比样品的评价标准是超薄玻璃碎裂，对于第一种样品至第四种样品的评价标准是评价设备是显示出现亮点或者玻璃基板碎裂。 评价设备是挤压测试机，测试压头为直径为1.2mm的球形压头(压头材质为不锈钢)。
在测试时，选取多个测试点，对于每个测试点，将测试压头以10mm/min的速度靠近样品，接触样品后分别以1kg，1.5kg，2kg。。。等载荷挤压样品，每个测试点停留10秒，对于对比样品的测试记录超薄玻璃碎裂时的载荷，对于第一种样品至第四种样品的测试，记录显示出现亮点或者玻璃基板碎裂时的载荷。在上述表格中，对于第一种样品进行挤压测试，对于弯折区，显示出现亮点对应的载荷为19kg，对于非弯折区，显示出现亮点或者玻璃基板碎裂对应的载荷为46kg；对于对比样品1，不同区域的测试结果均是在8kg时，超薄玻璃碎裂。
进行铅笔硬度测试时，评价标准为铅笔硬度大于或等于7，评价设备为铅笔硬度测试仪，测试方法如下：测试前需要检查产品外观无变色、气泡、裂口、脱落等不良，并用无尘布将样品表面擦拭干净；将三棱铅笔笔芯削成直径为3mm的圆柱，握住铅笔使得铅笔笔芯端面与400目砂纸成90度垂直，然后缓慢画圈，直至笔芯端面平整，四周边沿锐利；将待测样品放在水平、稳固的表面上，将磨制后的铅笔插入测试仪器，铅笔芯头部与待测样品的测试面成45度角接触，并以压力1kgf，速度10±2.5mm/s，行程为30mm画线，画5条线，仅允许1条线不合格(测试面出现划痕则为不合格)，例如在铅笔硬度为9H时，画5条线全部合格或者出现1条不合格，则测试样品的铅笔硬度大于或等于9H，若画的5条线中出现不合格的条数大于或等于2条，则测试样品的铅笔硬度小于9H，表格中的数据是测试样品所能允许的最大的铅笔硬度。
进行动态弯折测试时，评价标准是层叠结构出现偏移或者玻璃基板(对于对比样品是超薄玻璃)碎裂，例如上述表格中，第一种样品是，动态弯折20W次，最小弯折半径为2mm，对比样品1为，动态弯折20W次，最小弯折半径为0.5mm。
通过上述表格可知，采用不同结构相结合的方式，相比于相关技术中仅采用超薄玻璃一种结构的结构形式，本实施例的盖板，弯折区的弯折性能强，非弯折区的抗冲击性能强，解决了弯折性能和抗冲击性能不能兼顾的问题。
通过上述表格可知，所述盖板的不同区域的相应的性能，可以通过调整 相应的结构的厚度、采用的材质等参数来实现。
参考图8-图10，本公开实施例还提供一种显示模组，包括显示面板100和位于所述显示面板100出光侧的上述的盖板。
示例性的，所述显示面板100包括绑定区，所述绑定区弯折至所述显示面板100的背光侧以与主电路板绑定连接，所述绑定区靠近所述盖板的一侧设置有保护胶层200；
所述绑定区在所述盖板上的正投影与所述盖板完全重合，或者所述绑定区在所述盖板上的正投影位于所述盖板的第一区域，所述盖板包括外露于所述第一区域外围的边缘区域。
相关技术的折叠产品中，由于盖板具有一定柔性，若盖板相对显示面板的Bending区(绑定区)齐平或外扩，在Pad Bending工序之后有盖板与MCL胶(即所述保护胶层200)粘连的风险，从而导致显示异常等问题。因此，相关技术中，盖板边缘相对绑定区边缘内收，如此结构设计虽避免了盖板与保护胶层200粘连风险，但一方面将保护胶层200和绑定区暴露于外边缘，在整机组装等后续工序中仍存在撞击风险，另一方面，整机装机时，中框300整体从上向下覆盖于盖板400表面(中框300覆盖了部分盖板400)，相当于屏幕整体凹陷于中框300内，影响了美观性和屏占比，参考图16。
针对于上述问题，相对于采用超薄玻璃制成的盖板，本实施例中在所述非弯折区20中使用了刚性和挺性均优于超薄玻璃的玻璃基板1(所述玻璃基板1的厚度大于或等于300um)，所述盖板的边缘相对绑定区边缘可做齐平或适当外扩，即所述绑定区在所述盖板上的正投影与所述盖板完全重合，或者所述绑定区在所述盖板上的正投影位于所述盖板的第一区域，所述盖板包括外露于所述第一区域外围的边缘区域。这样，盖板的支撑性强，无需考虑盖板与保护胶层200的粘连问题；且可从正面有效保护所述绑定区在整机组装等后续工序中不受撞击。
参考图17，示例性的，所述盖,400包括外露于所述第一区域外围的边缘区域，所述显示模组的中框300与所述边缘区域靠近所述显示面板的一侧连接。
中框组装时可考虑从背面内扣于盖板，即所述中框整体位于所述盖板的背光侧，增加整机屏占比。
本公开实施例还提供一种显示装置，包括上述的显示模组。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (24)

  1. 一种盖板，其中，包括盖板主体，所述盖板主体包括弯折区和位于所述弯折区的两侧的非弯折区，所述非弯折区包括玻璃基板，所述弯折区包括采用光学树脂材料通过涂布工艺形成的第一光学树脂涂层。
  2. 根据权利要求1所述的盖板，其中，所述盖板主体沿其厚度方向包括相对设置的第一侧和第二侧，从所述第一侧到所述第二侧的方向，所述弯折区包括所述玻璃基板和涂布于所述玻璃基板上的第二光学树脂涂层；
    所述第一光学树脂涂层具有位于所述第二侧的第一表面，所述第二光学树脂涂层具有位于所述第二侧的第二表面，所述第一表面与所述第二表面位于同一平面。
  3. 根据权利要求2所述的盖板，其中，所述玻璃基板具有位于所述第一侧的第三表面，所述第一光学树脂涂层包括位于所述第一侧的第四表面，所述第三表面和所述第四表面位于同一平面。
  4. 根据权利要求3所述的盖板，其中，所述盖板主体的所述第一侧通过光学胶层粘接有第一柔性膜材，和/或所述盖板主体的所述第二侧通过光学胶层粘接有第一柔性膜材。
  5. 根据权利要求4所述的盖板，其中，所述第一柔性膜材采用PET、CPI、PMMA或超薄玻璃制成。
  6. 根据权利要求5所述的盖板，其中，所述第一柔性膜材的厚度小于或等于20um。
  7. 根据权利要求2所述的盖板，其中，所述盖板主体还包括位于所述弯折区和所述非弯折区之间的过渡区，所述过渡区包括涂布有第三光学树脂涂层，所述第三光学树脂涂层包括位于所述第二侧的第五表面，所述第五表面与所述第二表面位于同一平面；
    所述玻璃基板具有位于所述第一侧的第三表面，所述第三光学树脂涂层包括位于所述第一侧的第六表面，所述第六表面与所述第三表面位于同一平面。
  8. 根据权利要求7所述的盖板，其中，从所述第一侧到所述第二侧的方向，所述弯折区包括第二柔性膜材和涂布于所述第二柔性膜材上的所述第一光 学树脂涂层。
  9. 根据权利要求8所述的盖板，其中，所述第二柔性膜材采用PET、CPI、PMMA或超薄玻璃制成。
  10. 根据权利要求8所述的盖板，其中，所述第二柔性膜材的厚度小于或等于70um。
  11. 根据权利要求7所述的盖板，其中，所述盖板主体的所述第一侧通过光学胶层粘接有第三柔性膜材；或者所述盖板主体的所述第二侧通过光学胶层粘接有第三柔性膜材。
  12. 根据权利要求11所述的盖板，其中，所述第三柔性膜材采用PET、CPI、PMMA或超薄玻璃制成。
  13. 根据权利要求2或7所述的盖板，其中，所述玻璃基板的厚度大于或等于300um。
  14. 根据权利要求1所述的盖板，其中，所述玻璃基板包括靠近所述弯折区设置的侧面和与所述侧面相邻的入光面和出光面，所述入光面用于接收显示面板发出的光；
    所述出光面与所述侧面相交的边缘进行倒角或圆角设置，和/或所述入光面与所述侧面相交的边缘进行倒角或圆角设置。
  15. 根据权利要求14所述的盖板，其中，所述玻璃基板靠近所述弯折区的一端在所述盖板主体的厚度方向上的截面为1/2椭圆形，或所述玻璃基板靠近所述弯折区的一端在所述盖板主体的厚度方向上的截面为1/4椭圆形，且所述1/4椭圆形朝向远离所述入光面的方向凸出设置。
  16. 根据权利要求14所述的盖板，其中，从所述非弯折区到所述弯折区的方向，所述玻璃基板的出光面包括平面部分、斜面部分和弧面部分，所述弧面部分是由所述出光面和所述侧面相交处进行圆角处理形成；和/或，从所述非弯折区到所述弯折区的方向，所述玻璃基板的入光面包括平面部分、斜面部分和弧面部分，所述弧面部分是由所述入光面和所述侧面相交处进行圆角处理形成。
  17. 根据权利要求7所述的盖板，其中，所述第一光学树脂涂层、所述第二光学树脂涂层和所述第三光学树脂涂层采用相同的材料制成，所述第一光学 树脂涂层的折射率与所述玻璃基板的折射率的差值小于或等于0.01。
  18. 根据权利要求17所述的盖板，其中，所述第一光学树脂涂层的折射率为n，1.50≤n≤1.54。
  19. 根据权利要求17所述的盖板，其中，所述第一光学树脂涂层的透过率大于或等于90％。
  20. 根据权利要求17所述的盖板，其中，所述第一光学树脂涂层的材料采用聚酯类、聚氨酯类、热塑性聚氨酯类、聚酰胺类、聚酰亚胺类、聚甲丙烯酸甲酯类、聚丙烯类、聚乙烯类、聚丙烯类、聚氯乙烯类、聚苯乙烯类、苯乙烯类、聚甲醛类、聚苯醚类、聚苯硫醚类、聚砜类、聚芳醚酮类、苯乙烯类、聚烯烃类、聚烯烃类等材料中的一种或多种。
  21. 一种显示模组，其中，包括显示面板和位于所述显示面板出光侧的权利要求1-20任一项所述的盖板。
  22. 根据权利要求21所述的显示模组，其中，所述显示面板包括绑定区，所述绑定区弯折至所述显示面板的背光侧以与主电路板绑定连接，所述绑定区靠近所述盖板的一侧设置有保护胶层；
    所述绑定区在所述盖板上的正投影与所述盖板完全重合，或者所述绑定区在所述盖板上的正投影位于所述盖板的第一区域，所述盖板包括外露于所述第一区域外围的边缘区域。
  23. 根据权利要求22所述的显示模组，其中，所述盖板包括外露于所述第一区域外围的边缘区域，所述显示模组的中框与所述边缘区域靠近所述显示面板的一侧连接。
  24. 一种显示装置，其中，包括权利要求21-23任一项所述的显示模组。
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CN111724682A (zh) * 2020-06-10 2020-09-29 武汉华星光电半导体显示技术有限公司 一种柔性盖板及其制备方法和显示装置

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