CN112848538B - Composite material and display device - Google Patents
Composite material and display device Download PDFInfo
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- CN112848538B CN112848538B CN202110011472.7A CN202110011472A CN112848538B CN 112848538 B CN112848538 B CN 112848538B CN 202110011472 A CN202110011472 A CN 202110011472A CN 112848538 B CN112848538 B CN 112848538B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
- B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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Abstract
The embodiment of the application discloses composite material is applied to in a curved screen, composite material includes substrate layer and metal level, the metal level set up in one side of substrate layer, wherein composite material includes a center region and at least one marginal zone, the marginal zone is located the one side of center region is located the center region the hardness of metal level is greater than and is located the marginal zone the hardness of metal level. The composite material is arranged in the metal layer in different areas, namely the hardness of the metal layer positioned in the central area is higher than that of the metal layer positioned in the edge area, so that the situation that the composite material is stripped between laminated layers is avoided, the front display effect of a screen is prevented from being influenced by the impression generated on the composite material, and the yield of the whole product and the manufacturing process is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a composite material suitable for a curved screen and a display device adopting the composite material.
Background
The full screen technology is one of the more popular technologies on the mobile phone terminal. Along with the development of the 3D cambered surface glass cover plate technology, the left side and the right side, even the upper side and the lower side of the cover plate glass can be thermally bent into an arc shape, so that better impression and higher screen occupation ratio are brought. Wherein, the four curved surfaces and the inverted display cover plate can well improve the overall appearance of the screen. Due to the special shape of the large-angle cambered surface of the 3D display cover plate, great challenges are brought to the selection and design of the attaching process and materials.
In the OLED screen module laminated material, the composite material is a multilayer material which can play roles of buffering, heat insulation, electromagnetic shielding and the like. The screen can be protected from being damaged to a certain extent, and the screen is an important material for ensuring the stability of the screen under severe environmental conditions. In the prior art, the main material of the composite material is copper foil, however, the copper foil can be bent at a large angle during 3D bonding, and if a copper foil material with a hard material is selected, the peeling phenomenon between laminated layers can be easily caused; if select for use the softer copper foil of material, when carrying out back processing procedure like flexible circuit board laminating in combined material, produce the impression easily on softer copper foil when the IC support is placed, this can influence the outward appearance of OLED module product, influences the positive display effect of screen even.
Therefore, improvement is urgently needed to overcome the defects in the prior art.
Disclosure of Invention
An object of this application is to provide a combined material and display device, when can solving among the prior art combined material laminating on curved surface screen, can produce peeling off or the impression between the stromatolite to influence the positive display effect's of screen problem.
The application provides a combined material is applied to in a curved screen, combined material includes substrate layer and metal level, the metal level set up in one side of substrate layer, its characterized in that: the composite material comprises a central area and at least one edge area, wherein the edge area is positioned on one side of the central area, and the hardness of the metal layer positioned in the central area is greater than that of the metal layer positioned in the edge area.
Optionally, in some embodiments of the present application, the composite material includes two edge regions, which are respectively located at two opposite sides of the central region; the metal layer is divided into three sections, wherein one section has higher hardness and corresponds to the central area, and the other two sections have lower hardness and correspond to the two edge areas.
Optionally, in some embodiments of the present application, the metal layer in the central region is rolled copper, and the metal layer in the edge region is electrolytic copper.
Optionally, in some embodiments of the present application, the metal layer located in the central region is a copper alloy, and the metal layer located in the edge region is electrolytic copper.
Optionally, in some embodiments of the present application, the material of the copper alloy is metal copper doped with at least one of carbon, silicon, and nickel.
Optionally, in some embodiments of the present application, the composite further includes: the protective layer is arranged on one side of the metal layer, which is far away from the substrate layer; the adhesive layer is arranged on one side, far away from the metal layer, of the substrate layer; and the release layer is arranged on one side, far away from the base material layer, of the glue layer.
Optionally, in some embodiments of the present application, the substrate layer is foam; the adhesive layer is a grid adhesive tape; the release layer is a composite release film composed of one or more of a PE release film, a PET release film, an OPP release film and a PC release film.
Optionally, in some embodiments of the present application, the edge region surrounds the central region.
Optionally, in some embodiments of the present application, the thickness of the metal layer is less than 0.05mm.
Correspondingly, this application still provides a display device, including flexible display panel and apron, the apron set up in one side of flexible display panel, wherein display device still includes in the above-mentioned embodiment the combined material, the combined material set up in flexible display panel's opposite side, the apron includes plane area and curved surface district, the combined material the center district corresponds the apron the plane area, the combined material the marginal zone corresponds the apron curved surface district.
Compared with the prior art, the composite material in the embodiment of the application has the advantages that the metal layer is arranged in the area, namely the hardness of the metal layer in the central area is higher than that of the metal layer in the edge area, so that the composite material is prevented from being stripped between the laminated layers, and the yield of the whole product and the manufacturing process is improved. The more specific beneficial effects are as follows: the hardness of the metal layer positioned in the central area is higher, so that other parts can not generate marks on the composite material when a post-processing procedure is carried out, and the front display effect of a screen can not be influenced; the hardness of the metal layer positioned in the edge area is low, so that the peeling phenomenon between the laminated layers can not be generated by large-angle bending during 3D (three-dimensional) laminating, and the adhesive force between the film layers of the composite material is improved. Furthermore, the substrate layer can buffer external force, and damage to the display panel caused by bonding pressure in the process of bonding the composite material and the display panel can be prevented; the protective layer can effectively protect the metal layer and prevent the metal layer from being influenced by the external environment, so that the phenomena of oxidation, corrosion and the like are avoided; the adhesive layer is mainly used for attaching the composite material to a display panel and used for enhancing the attaching tightness of the composite material and the display panel; the release layer can protect other film layers of the composite material in the process of storage or transportation.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of the composite material in the examples of the present application;
FIG. 2 is a schematic plan view of the composite material in the examples of the present application;
FIG. 3 is another schematic plan view of the composite material described in the examples of the present application;
FIG. 4 is a schematic structural diagram of a display device according to an embodiment of the present application;
FIG. 5 is a schematic view of a structure of the cover plate in the embodiment of the present application;
FIG. 6 is a schematic view of the composite material shown in FIG. 2 corresponding to the cover plate shown in FIG. 5;
FIG. 7 is a schematic view of another structure of the cover plate in the embodiment of the present application;
fig. 8 is a schematic diagram illustrating a corresponding position relationship between the composite material in fig. 3 and the cover plate in fig. 7.
Description of reference numerals:
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In this application, unless stated to the contrary, the use of directional terms such as "upper", "lower", "left" and "right" may refer to the actual use or operation of the device, may refer to the drawing direction in the drawings, and may refer to the opposite directions; while "inner" and "outer" are with respect to the outline of the device.
Specifically, referring to fig. 1 and fig. 2, an embodiment of the present application provides a composite 100 applied to a curved panel, where the composite 100 includes a substrate layer 110 and a metal layer 120, the metal layer 120 is disposed on one side of the substrate layer 110, the composite 100 includes a central region 101 and at least one edge region 102, the edge region 102 is located on one side of the central region 101, and a hardness of the metal layer 120 located in the central region 101 is greater than a hardness of the metal layer 120 located in the edge region 102. The hardness of the metal layer 120 in the central region 101 is relatively high, so that other components will not generate marks on the composite material 100 during post-processing, and the front display effect of the screen will not be affected; the hardness of the metal layer 120 in the edge region 102 is relatively low, so that the peeling phenomenon between the stacked layers is not generated during the 3D lamination in the large-angle bending process, and the adhesion between the film layers of the composite material 100 is improved.
In the embodiment of the present application, the composite material 100 further includes: the protective layer 130 is arranged on one side of the metal layer 120 far away from the substrate layer 110; the adhesive layer 140 is disposed on one side of the substrate layer 110 away from the metal layer 120; and a release layer 150 disposed on one side of the adhesive layer 140 away from the substrate layer 110. The protective layer 130 can effectively protect the metal layer 120, and prevent the metal layer 120 from being affected by an external environment, thereby causing oxidation, corrosion, and the like; the adhesive layer 140 is mainly used for attaching the composite material 100 to a display panel, and is used for enhancing the attaching tightness between the composite material 100 and the display panel; the release layer 150 is used to protect other film layers of the composite 100 during storage or transportation.
Referring to fig. 2, in an embodiment of the present application, the composite material 100 includes two edge regions 102 respectively located at two opposite sides of the central region 101; the metal layer 120 is divided into three sections, one section of which has a greater hardness and corresponds to the central region 101, and the other two sections of which have a lesser hardness and correspond to the two edge regions 102.
Referring to fig. 3, in an embodiment of the present application, the composite material 100 includes a central region 101 and an edge region 102, the edge region 102 surrounds or encircles the central region 101, that is, the edge region 102 is located at four sides of the central region 101; similarly, the metal layer 120 is divided into two parts, one of which has a greater hardness and corresponds to the central region 101, and the other of which has a lesser hardness and corresponds to the edge region 102.
In the embodiment of the present application, the material of the metal layer 120 includes copper, aluminum, and copper alloy. Preferably, the metal layer 120 in the central region 101 is rolled copper, and the metal layer 120 in the edge region 102 is electrolytic copper; the metal layer 120 in the central region 101 is a copper alloy, and the metal layer 120 in the edge region 102 is electrolytic copper. It will be understood by those skilled in the art that the hardness of the metal layer 120 in the central region 101 is greater than that of the metal layer 120 in the edge region 102. For example: the metal layer 120 in the central region 101 is pure copper, and the metal layer 120 in the edge region 102 is pure aluminum; the metal layer 120 in the central region 101 is a copper alloy, and the metal layer 120 in the edge region 102 is electrolytic aluminum or the like.
In the embodiment of the application, the material of the copper alloy is metal copper doped with at least one of carbon element, silicon element and nickel element. It is understood by those skilled in the art that the doping of carbon, silicon and nickel in the copper metal can be made by conventional means in the art, and the mass ratio of carbon, silicon and nickel in the copper alloy is not limited, but the hardness of the copper alloy is larger than that of electrolytic copper.
In the embodiment of the present invention, the thickness of the metal layer 120 is less than 0.05mm, and the metal layer 120 with the thickness satisfies the thickness requirement of the metal foil, and is disposed in the composite material 100, so as to also satisfy the ductility and hardness requirements of the composite material 100, and not to cause the composite material 100 to curl when attached to a display panel. Preferably, the thickness of the composite 100 is less than 1mm.
The substrate layer 110 in the embodiment of the present application is preferably foam, for example: the Super Clean Foam (SCF) can buffer external force and prevent the display panel from being damaged by bonding pressure in the bonding process of the composite material 100 and the display panel; the protective layer 130 is a conventional protective material in the art, and is not described in detail herein; the adhesive layer 140 is preferably a grid adhesive tape, and the cross-hatch pattern is printed on the adhesive surface by applying pressure through the grid, so that the curling phenomenon caused by the shrinkage of the adhesive layer can be prevented, and the adhesion tightness between the composite material 100 and the display panel is enhanced, and the adhesive material of the adhesive layer 140 can be acrylic adhesive or silica gel; the release layer 150 is a composite release film composed of one or more of a PE release film, a PET release film, an OPP release film, and a PC release film, preferably, the release film 150 is a PE release film.
Specifically, referring to fig. 4 to 8, an embodiment of the present application provides a display device 10, including a flexible display panel 200 and a cover plate 300, wherein the cover plate 300 is disposed on one side of the flexible display panel 200, wherein the display device 10 further includes the composite material 100 according to the above embodiment, the composite material 100 is disposed on the other side of the flexible display panel 200, the cover plate 300 includes a planar area 301 and a curved area 302, the central area 101 of the composite material 100 corresponds to the planar area 301 of the cover plate 300, and the edge area 102 of the composite material 100 corresponds to the curved area 302 of the cover plate 300.
Referring to fig. 5 to 6, in an embodiment of the present application, the cover plate 300 includes two curved regions 302 respectively located at two opposite sides of the planar region 301; the composite material 100 includes two edge regions 102 respectively located at two opposite side edges of the central region 101; wherein the two edge regions 102 of the composite material 100 are disposed corresponding to the two curved regions 302 of the cover sheet 300, and the central region 101 of the composite material 100 is disposed corresponding to the planar region 301 of the cover sheet 300. The metal layer 120 is divided into three sections, wherein one section has a higher hardness and is disposed corresponding to the central region 101 of the composite material 100, i.e., corresponding to the planar region 301 of the cover plate 300, and the other two sections have a lower hardness and are disposed corresponding to the two edge regions 102 of the composite material 100, i.e., corresponding to the two curved regions 302 of the cover plate 300. It can be understood by those skilled in the art that the cover plate 300 of the present embodiment is a hyperboloid cover plate, and each side of the cover plate 300 is provided with a chamfer, and the size of the chamfer can be adjusted according to specific situations, and is not limited to fig. 5.
Referring to fig. 7 to 8, in an embodiment of the present application, the cover plate 300 includes a planar area 301 and a curved area 302, and the curved area 302 is disposed around the planar area 301; the composite material 100 includes a central region 101 and an edge region 102, wherein the edge region 102 is disposed around the central region 101; wherein the central region 101 of the composite material 100 is disposed corresponding to the planar region 301 of the cap plate 300, and the edge region 302 of the composite material 100 is disposed corresponding to the curved region 102 of the cap plate 300. The metal layer 120 is divided into two parts, one of which is harder and corresponds to the central region 101 of the composite material 100, i.e. to the planar region 301 of the cover sheet 300, and the other of which is less hard and corresponds to the edge region 102 of the composite material 100, i.e. to the curved region 302 of the cover sheet 300. It can be understood by those skilled in the art that the cover plate 300 of the present embodiment is a four-curved cover plate.
In the embodiment of the present application, the flexible display panel 200 may be an OLED display panel, an LCD display panel, or a micro-LED display panel, but is not limited thereto, and the present application is not limited thereto. It should be noted that the composite material 100 is required to have the hardness of the metal layer 120 in the curved region of the display device 10 greater than the hardness of the metal layer 120 in the planar region of the display device 10. The display panel of the display device 10 provided in the embodiment of the present application may also be a three-curved-surface display panel or a foldable display panel, for example: when the display panel of the display device 10 is a foldable display panel, the hardness of the metal layer 120 of the composite material 100 in the folding region of the foldable display panel is greater than the hardness of the metal layer 120 in the non-folding region of the foldable display panel.
The display device 10 may be an intelligent mobile terminal device such as a mobile phone, a computer, an intelligent watch, a vehicle-mounted display screen, and the like, which is not limited in the present application.
In the embodiment of the present application, the hardness of the metal layer 120 of the composite material 100 in the central region 101 is greater than that of the metal layer 120 in the edge region 101. The hardness of the metal layer 120 in the central region 101 is relatively high, so that other components will not generate marks on the composite material 100 during post-processing, and the front display effect of the screen will not be affected; the hardness of the metal layer 120 in the edge region 102 is relatively low, so that the peeling phenomenon between the stacked layers is not generated during the 3D lamination in the large-angle bending process, and the adhesion between the film layers of the composite material 100 is improved. Further, the substrate layer 110 can buffer external force, and can prevent damage to the display panel caused by bonding pressure in the process of bonding the composite material 100 and the display panel; the protective layer 130 can effectively protect the metal layer 120, and prevent the metal layer 120 from being affected by the external environment, thereby causing oxidation, corrosion, and the like; the adhesive layer 140 is mainly used for attaching the composite material 100 to a display panel, and is used for enhancing the adhesion tightness between the composite material 100 and the display panel; the release layer 150 can protect other film layers of the composite 100 during storage or transportation.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The composite material 100 and the display device 10 provided in the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are described herein by applying specific examples, and the description of the embodiments is only used to help understand the method and the core concept of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. The utility model provides a composite material, is applied to in the curved screen, composite material includes substrate layer and metal level, the metal level set up in one side of substrate layer, its characterized in that: the composite material comprises a central area and at least one edge area, the edge area is positioned on one side of the central area, and the hardness of the metal layer positioned in the central area is greater than that of the metal layer positioned in the edge area; wherein the metal layer in the central region is rolled copper or copper alloy, and the metal layer in the edge region is electrolytic copper.
2. The composite of claim 1, wherein: the composite material comprises two edge regions which are respectively positioned on two opposite sides of the central region; the metal layer is divided into three sections, wherein one section has higher hardness and corresponds to the central area, and the other two sections have lower hardness and correspond to the two edge areas.
3. The composite of claim 1, wherein: the copper alloy is made of metal copper doped with at least one of carbon element, silicon element and nickel element.
4. The composite of claim 1, wherein: the composite further comprises: the protective layer is arranged on one side of the metal layer, which is far away from the substrate layer; the adhesive layer is arranged on one side of the substrate layer, which is far away from the metal layer; and the release layer is arranged on one side, far away from the base material layer, of the glue layer.
5. The composite of claim 4, wherein: the substrate layer is made of foam; the adhesive layer is a grid adhesive tape; the release layer is a composite release film composed of one or more of a PE release film, a PET release film, an OPP release film and a PC release film.
6. The composite of claim 1, wherein: the edge region surrounds the central region.
7. The composite of claim 1, wherein: the thickness of the metal layer is less than 0.05mm.
8. A display device, includes flexible display panel and apron, wherein the apron set up in one side of flexible display panel, its characterized in that: the display device further comprises the composite of claim 1, the composite being disposed on another side of the flexible display panel, the cover plate comprising a planar region and a curved region, the central region of the composite corresponding to the planar region of the cover plate, the edge region of the composite corresponding to the curved region of the cover plate.
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| CN202110011472.7A CN112848538B (en) | 2021-01-06 | 2021-01-06 | Composite material and display device |
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| CN202110011472.7A CN112848538B (en) | 2021-01-06 | 2021-01-06 | Composite material and display device |
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| CN112848538B true CN112848538B (en) | 2023-02-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164315A (en) * | 2019-06-05 | 2019-08-23 | 昆山国显光电有限公司 | Display screen and preparation method thereof, cover board and display device |
| CN112071207A (en) * | 2020-09-15 | 2020-12-11 | 武汉华星光电半导体显示技术有限公司 | Composite heat dissipation material and display device |
| CN112078196A (en) * | 2020-09-09 | 2020-12-15 | 武汉华星光电半导体显示技术有限公司 | Composite film layer and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101910111B1 (en) * | 2012-08-28 | 2018-10-22 | 삼성디스플레이 주식회사 | Foldable display device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164315A (en) * | 2019-06-05 | 2019-08-23 | 昆山国显光电有限公司 | Display screen and preparation method thereof, cover board and display device |
| CN112078196A (en) * | 2020-09-09 | 2020-12-15 | 武汉华星光电半导体显示技术有限公司 | Composite film layer and display device |
| CN112071207A (en) * | 2020-09-15 | 2020-12-11 | 武汉华星光电半导体显示技术有限公司 | Composite heat dissipation material and display device |
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