CN109980124A - Support membrane and preparation method thereof, display device - Google Patents
Support membrane and preparation method thereof, display device Download PDFInfo
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- CN109980124A CN109980124A CN201910280892.8A CN201910280892A CN109980124A CN 109980124 A CN109980124 A CN 109980124A CN 201910280892 A CN201910280892 A CN 201910280892A CN 109980124 A CN109980124 A CN 109980124A
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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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The problem of the invention discloses a kind of support membranes and preparation method thereof, display device, are related to field of display technology, and it is poor to solve support membrane in the prior art bending recovery, and slow non-reversible deformation can occur under the action of stress.Main technical schemes of the invention are as follows: include: metal net layer；Organic film, the organic film fill the hollow-out parts in the middle part of the metal net layer for being wrapped in the metal net layer.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of support membrane and preparation method thereof, display device.
Background technique
At present.Flexible display panels are got more and more extensive concerning of people, especially due to its changeability bendability characteristics
Organic LED display device (Organic Light Emitting Dispiay, OLED) due to self-luminous,
Many advantages, such as luminous efficiency is high, the response time is short, clarity and contrast are high, and it is increasingly becoming the first choice of display panel.
Flexible display panels are usually bonded support membrane in bottom to be protected and be supported, and therefore, support membrane compares other
It is that the bending recoverability of most thick, most thick support membrane, bending strength, deformability etc. will will have a direct impact on patch for film layer
It applies at an upper portion thereof compared with the integrally bending performance of film layer.
By taking OLED display panel as an example, since OLED display panel generally includes shine film layer, array structure layer, flexible liner
The film layer structures such as bottom, support membrane, the support membrane of OLED display panel generallys use the organic materials such as PET base material and is made at present, has
The bending recoverability of support membrane made of machine material, bending strength are poor, can occur slowly can not under the action of stress
Inverse deformation, and creep at high temperature is obvious, influences support membrane to the support protecting effect of flexible display panels.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of support membrane and preparation method thereof, display device, main purpose is solution
The problem of support membrane bending recovery certainly in the prior art is poor, and slow non-reversible deformation can occur under the action of stress.
In order to achieve the above objectives, present invention generally provides following technical solutions:
On the one hand, the embodiment of the invention provides a kind of support membrane, which includes: metal net layer；Organic film, institute
Organic film is stated for being wrapped in the metal net layer, and fills the hollow-out parts in the middle part of the metal net layer.
Optionally, metal net layer is set as 3-dimensional metal network structure, and the inside of the 3-dimensional metal network structure is formed
There are the hollow-out parts.
Optionally, metal net layer is set as metal sheeting design, and is evenly arranged on the metal sheeting design described
Hollow-out parts.
Optionally, the pliable region of metal net layer and the flexible base board is correspondingly arranged.
Optionally, the metal net layer is by having the metal material for presetting elasticity to be made；The organic film is pre- by having
If the organic material of elasticity is made.
On the other hand, the embodiment of the present invention also provides a kind of preparation method of support membrane, which includes: production gold
Belong to stratum reticulare；External in the metal net layer makes organic film, to form support membrane.
Optionally, the production metal net layer includes: to provide a mold, and molten metal is poured into the mold, with
Form 3-dimensional metal network structure；Or, working out to form the 3-dimensional metal network structure by metal wire material.
Optionally, the production metal net layer includes: to provide a sheet metal, and uniformly processing is engraved on the sheet metal
Empty portion.
Optionally, the machine film layer that is externally formed in the metal net layer includes: modulation macromolecule organic material, and
Outside coated on the metal net layer, for filling the hollow-out parts and wrapping up the metal net layer.
On the other hand, the embodiment of the present invention also provides a kind of display device, which includes: above-mentioned support membrane.
A kind of support membrane that the embodiment of the present invention proposes and preparation method thereof, display device, metal net layer is by metal material
It being made, organic film is wrapped in the external of metal net layer and forms the smooth support membrane in surface, and the elasticity modulus of metal material is larger,
Metal net layer can be improved the recovery capacity of support membrane after deformation as main body.So by having metal net layer and being wrapped in it
External organic film collectively forms support membrane, can have compared to the only support membrane made of organic material higher curved
Roll over creep resistance under recovery capacity, bending strength and deformability and high temperature you that.And metal is added in support membrane
Stratum reticulare can also improve the supportive and intensity of support membrane, be conducive to improve support and guarantor to flexible base board and display element
Shield.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of support membrane provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another support membrane provided in an embodiment of the present invention；
Fig. 3 is A-A the schematic diagram of the section structure in Fig. 2 provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another support membrane provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another support membrane provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another support membrane provided in an embodiment of the present invention；
Fig. 7 is a kind of flow diagram of the preparation method of support membrane provided in an embodiment of the present invention.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to support membrane proposed according to the present invention and preparation method thereof, display device, specific embodiment party
Formula, structure, feature and its effect, detailed description is as follows.
Embodiment one
The embodiment of the present invention one proposes a kind of support membrane, which includes:
As shown in figures 1 to 6, metal net layer 1；Organic film 1, organic film 2 fill gold for being wrapped in metal net layer 1
Belong to the hollow-out parts 3 at 1 middle part of stratum reticulare.
Specifically, metal net layer 1 is grid structure made of metal, inside be formed with engraved structure, metal
Stratum reticulare can be the laminated structure for being machined with hollow-out parts 3 or the reticular structure etc. for being capable of forming hollow-out parts 3, and wherein reticular structure can
To be two-dimensional network structure, tridimensional network can also be；Metal net layer 1 can be by the metal material with good elasticity
It is made, such as: it can be high resiliency steel, nickel, titanium etc.；Metal net layer 1 can be arranged in entire support membrane or metal net layer 1
The pliable region setting of flexible base board 4 can also be corresponded only to, and should ensure that the area of metal net layer 1 is corresponding soft not less than its
Property 4 pliable region of substrate area, so as to so that support membrane bending region have good bending recoverability.Metal
The multiple hollow-out parts 3 of the formation of stratum reticulare 1, hollow-out parts are to run through the absent region of metal net layer, and multiple missing portions make metal net layer 1
The webbed structure of shape.And organic film 2 is set in the external of metal net layer 1, organic film 2 can be by entire metal net layer packet
It wraps up in, its two sides is made to be respectively formed smooth surface, the one side that can also only contact metal net layer 1 with flexible base board 4 is wrapped up, and is guaranteed
The surface that support membrane is contacted with flexible base board 4 is smooth surface, and organic film 2 is made up of organic material, such as: it is organic
Film layer 2 can be made of materials such as PI, rubber, silica gel.
Support membrane in the prior art mostly uses the organic materials such as PI, PET to be made, PI film (Kapton), bullet
Property modulus exists in 400MPa, PET film (poly terephthalic acid class plastic film), elasticity modulus 4000MPa, both materials
It is more obvious more than the creep under variable stress after 60 degrees Celsius, mutability, and non-reversible deformation can be generated under long-time stress,
The display device made of flexible display panels has the characteristics that flexible, in use, can there is prolonged bending fold
Or states, the support membrane made of the organic materials such as PI, PET such as curling are difficult to reply completely after prolonged bending state
Deformation.In contrast, the hardness and modulus of metal material are much higher than organic material, and thermal stability is good, such as: the elasticity of steel
Modulus is up to 190G Pa, and elasticity modulus here is the scale measured object and resist elastic deformability's size, and value is bigger,
The stress for making material that flexible deformation occur is also bigger, i.e., the flexible deformation occurred under the action of certain stress is smaller, is more not easy
Deformation, and elastic-restoring force after deformation is stronger, is made of metal material metal net layer 1 and is applied in support membrane, gold
Belong to main body of the stratum reticulare 1 as support membrane, the non-reversible deformation problem of organic film 2 under stress can be alleviated, so as to
Guarantee the bending recoverability of support membrane, while metal net layer 1 is set, support film strength and supportive can be improved, and in height
Under temperature, the creep-resistant property of support membrane can be improved；The middle part of metal net layer 1 includes several hollow-out parts 3, multiple hollow-out parts 3
The deformation that metal net layer 1 can be enhanced, bending performance is set, and when display device is by the impact such as external collision, it can be with
By the effective dispersion of multiple hollow-out parts 3 and cushion impact forces, biggish impact force is avoided to act directly on flexible base board 4 or aobvious
Show on device, can preferably play the role of protecting flexible base board 4 and display device.The organic film made of organic material
2 fill the hollow-out parts 3 inside metal net layers 1 and wrap up metal net layer 1, and compared with metal material, the material is soft for organic material,
The package of metallic diaphragm 1 can be avoided by organic film 2 and scratch other film layers, and organic film 2 fills hollow-out parts 3, it can
So that support membrane has both metal material and the common advantage of organic material, the both high resilience with metal, high intensity also can be simultaneous
Have the flexibility and elasticity of organic material.
The embodiment of the present invention one proposes that a kind of support membrane, metal net layer are made of metal material, and organic film is wrapped in
The external of metal net layer forms the smooth support membrane in surface, and the elasticity modulus of metal material is larger, and metal net layer is as main body energy
Enough improve the recovery capacity of support membrane after deformation.So common by having metal net layer and being wrapped in its external organic film
Support membrane is constituted, can have higher bending recovery capacity, bending strong compared to the only support membrane made of organic material
Creep resistance under degree and deformability and high temperature you that.And addition metal net layer can also improve branch in support membrane
The supportive and intensity for supportting film, are conducive to improve support and the protection to flexible base board and display element.
Above-mentioned metal net layer 1 can there are many concrete forms, as shown in figure 4, metal net layer 1 can be set to 3-dimensional metal
The inside of network structure, 3-dimensional metal network structure is formed with hollow-out parts 3.Metal net layer 1 can be worked out by metal wire material
3-dimensional metal network structure, inside be formed with more hole shape hollow-out parts 3, it is optimal, inside can be formed it is regular
Hole, can make each section intensity of dimensional metal mesh network structure, elastic-restoring force equal in this way, and be conducive to the steady of structure
It is qualitative.3-dimensional metal network structure can make metal net layer 1 have certain thickness, compared with the sheet metal of same thickness, three
The quality of Vygen category network structure reduces, and has stronger elasticity and deformability, can be bent with flexible display panels,
The deformation such as curling, and have both the high intensity and high resilience energy of metal.Organic film 2 fills the hollow out inside three-dimensional metal structure
Portion 3,3-dimensional metal network structure can have sufficient contact area, 3-dimensional metal with the organic material for forming organic film 2
Network structure is capable of providing the power that organic film 2 restores deformation, and organic film 2 can be improved whole flexibility, the two it is abundant
It can be with good bending recoverability in conjunction with the flexible for reliably improving support membrane.
Above-mentioned metal net layer 1 can be there are many concrete form, and as shown in Figure 2 and Figure 3, metal net layer 1 can be set to metal
Plate construction, and hollow-out parts 3 are evenly arranged on metal sheeting design.Metal net layer 1, which removes, can be set to three above-mentioned Vygens
Belong to outside network structure, may also be configured to two-dimensional planar structure, and two-dimensional planar structure can be with compared to tridimensional network
Reduce the thickness of support membrane.Specifically, as shown in Figure 1, two-dimension plane structure can be the two dimension worked out by metal wire material
Metalolic network structure, or, two-dimension plane structure can also be metal sheeting design as shown in Figure 2, wherein the thickness of sheet metal
It may be set according to actual conditions, hollow-out parts 3 are evenly arranged in the middle part of metal sheeting design, the shape of hollow-out parts 3 can be
Circular hole, square hole shape or other rules, irregular arbitrary shape, are not particularly limited, quantity, the size of hollow-out parts 3 herein
Can according to the actual situation depending on, multiple hollow-out parts 3 are evenly distributed, such as: multiple hollow-out parts 3 can be arranges in matrix,
The hollow-out parts 3 of even arrangement can make the intensity of 1 each section of metal net layer equal with elastic force is flexed back to, and when display device is by outer
When portion impacts, multiple hollow-out parts 1 being uniformly arranged can uniformly disperse and cushion impact forces, and it is soft can preferably to play protection
The effect of property substrate 4 and display device.Due to metal intensity with higher, there is not pliable and bending and be easy in metal sheet
The problem of fracture, can be improved the deformability of sheet metal, makes by being uniformly arranged multiple hollow-out parts 3 on sheet metal
Metal sheet is easy to bend, and organic film 2 is wrapped in the outside of sheet metal, and the hollow-out parts 3 in the middle part of sheet metal are filled,
Organic film 2 and metal net layer 1 can be made to be effectively combined, have the support membrane being made of organic film 2 and metal net layer 1
Flexible can be with good bending recoverability.
Specifically, as shown in Figure 5, Figure 6, metal net layer 1 can be correspondingly arranged with the pliable region 5 of flexible base board 4.If
It sets metal net layer 1 and helps to improve recovery capacity of the support membrane after deformation, so, it can only setting unit in support membrane
Metal net layer 1 guarantees branch specifically, the position that metal net layer 1 is arranged should correspond to the pliable region 5 of flexible base board 4
The bending region for supportting film has high resilience energy, and the support membrane in remaining region can only be made up of organic film 2, only rise
To the protection and supporting role to flexible base board 4.
In addition, as shown in Figure 1, metal net layer 1 can also be arranged in entire support membrane, in the bendable with flexible base board 4
The corresponding part in bent region 5, metal net layer 1 can play the role of improving the bending recoverability of support membrane, and metal net layer 1 is made
Based on can improve irreversible transformation problem of the organic film 2 under stress；In the un-flexed region with flexible base board 4
Corresponding part, metal net layer 1 can play the role of improving the support strength of support membrane, so as to improve support membrane to soft
The support and protective effect of property substrate 4.
Specifically, metal net layer 1 can be by having the metal material for presetting elasticity to be made；Organic film 2 is default by having
The organic material of elasticity is made.Support membrane is bonded with flexible base board 4, and bending fold, curling can be carried out together with flexible base board 4
Equal deformation, so constitute the metal net layer 1 of support membrane and organic film 2 is required to the elasticity for having certain, metal net layer can be with
The preferable metal material of elasticity is selected, such as: high resiliency steel, nickel, titanium, superelastic alloy etc., the good metal material system of elasticity
At metal net layer 1 can not influence the bending function of flexible base board 4；Organic film 2 can select having with default elasticity
Machine material is made, such as: the materials such as PI, rubber, silica gel.
Embodiment two
As shown in fig. 7, the embodiment of the present invention two proposes a kind of preparation method of support membrane, which includes:
S1: production metal net layer 1；
S2: external in metal net layer 1 makes organic film 2, to form support membrane.
Specifically, the production of its internal metal net layer 1 is carried out first when making support membrane, when metal net layer 1 is arranged
When for network structure, it can be poured, be forged by metal, the methods of metal wire material braiding is made, it is intended to form internal is distributed with
The network-like structure of multiple hollow-out parts 3, or when metal net layer 1 is set as metal sheeting design, can provide one has
The sheet metal of preset thickness, then the hollow-out parts 3 of preset quantity are uniformly processed on sheet metal, with preset quantity
The metal net layer 1 of hollow-out parts 3 is able to carry out bending, and not easy to break；After the formation of metal net layer 1, in the outside of metal net layer 1
Wrap up organic film 2 organic material made of, can be made by the methods of coating, being molded, when making, can first by
Hollow-out parts 3 inside metal net layer 1 are filled, and guarantee that more than 2 metal net layer 1 of organic film adequately combines, then to metal net layer 1
Outside is wrapped up, and the outside that the organic film 2 with certain flexibility is wrapped in metal net layer 1 can prevent metal net layer 1 from scraping
Hurt other film layers.
The embodiment of the present invention two proposes a kind of preparation method of support membrane, by first making metal net layer, in metal
The external organic film for forming filling hollow-out parts and wrapping up metal net layer of stratum reticulare, can be support membrane and is provided simultaneously with metal and has
The common characteristic of machine material can be improved it by metal net layer in the bending region of support membrane and be bent recovery capability, You Jicai
Expect that the filling to the hollow-out parts of metal net layer improves flexible and bending ability, and the strength enhancing of support membrane entirety, it can be effective
The support and protective effect played to flexible panel.
Specifically, production metal net layer 1 includes: to provide a mold, molten metal is poured into mold, to form three-dimensional
Metalolic network structure；Or, working out to form 3-dimensional metal network structure by metal wire material.
When making metal net layer 1, metal net layer 1 can be 3-dimensional metal network structure, 3-dimensional metal network structure
It inside, can be by a variety of when production is set as the metal net layer 1 of 3-dimensional metal network structure there are more hollow-out parts 3
Method production, such as: by preset die, molten metal is poured into mold, 3-dimensional metal network can be formed after molding
Structure；Or, three-dimensional structure can be formed after braiding by some metal wire materials.
Specifically, production metal net layer 1 includes: to provide a sheet metal, hollow-out parts 3 are uniformly processed on sheet metal.
Metal net layer 1 may also be configured to two-dimensional planar structure, and two-dimensional planar structure can compared to tridimensional network
To reduce the thickness of support membrane.Specifically, two-dimension plane structure can be metal sheeting design, firstly, a sheet metal is provided,
Its thickness may be set according to actual conditions, and uniformly process hollow-out parts on metal sheeting design, and 3, hollow-out parts, 3 shape can
It to be circular hole, square hole shape or other rules, irregular arbitrary shape, is not particularly limited herein, multiple hollow-out parts 3 are uniformly
Arrangement, such as can be and arrange in matrix.
Specifically, the machine film layer 2 that is externally formed in metal net layer 1 includes: modulation macromolecule organic material, and it is coated on
The outside of metal net layer 1, for filling hollow-out parts 3 and wrapping up metal net layer 1.
When making organic film 2, first carry out macromolecule organic material modulation, after modulation by coating method or
Metal net layer 1 is wrapped in inside by the mode of person's injection molding, and can be filled the hollow-out parts 3 inside metal net layer 1, is realized
Metal net layer 1 is adequately contacted and is combined with organic film 2.
Embodiment three
The embodiment of the present invention three proposes a kind of display device, which includes: above-mentioned support membrane.Above-mentioned is aobvious
Showing device can be the electronic equipment with flexible display screen such as mobile phone in the prior art, computer, and apply above-mentioned support
The back side of the flexible base board 4 of display device is arranged in film, support membrane, can play the role of support and protection to flexible base board,
The support membrane constituted using metal net layer and organic film, can be improved the bending recoverability and support strength of support membrane, from
And support membrane is improved to the support protecting effect of flexible base board.
The embodiment of the present invention three proposes a kind of display device, is bonded by using by metal net layer and organic film
Support membrane, can be improved the bending recoverability of support membrane, to improve support membrane for the display panel of display device
The effect of support and protection.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of support membrane is set to the back side of flexible base board characterized by comprising
Metal net layer；
Organic film, the organic film fill the hollow out in the middle part of the metal net layer for being wrapped in the metal net layer
Portion.
2. support membrane according to claim 1, which is characterized in that
Metal net layer is set as 3-dimensional metal network structure, and the inside of the 3-dimensional metal network structure is formed with the hollow out
Portion.
3. support membrane according to claim 1, which is characterized in that
Metal net layer is set as metal sheeting design, and the hollow-out parts are evenly arranged on the metal sheeting design.
4. support membrane according to claim 1, which is characterized in that
The pliable region of metal net layer and the flexible base board is correspondingly arranged.
5. support membrane according to claim 1, which is characterized in that
The metal net layer is by having the metal material for presetting elasticity to be made；
The organic film is by having the organic material for presetting elasticity to be made.
6. a kind of preparation method of support membrane characterized by comprising
Make metal net layer；
External in the metal net layer makes organic film, to form support membrane.
7. the preparation method of support membrane according to claim 6, which is characterized in that
The production metal net layer, comprising:
One mold is provided, molten metal is poured into the mold, to form 3-dimensional metal network structure；Or, passing through metal
Silk material is worked out to form the 3-dimensional metal network structure.
8. the preparation method of support membrane according to claim 6, which is characterized in that
The production metal net layer, comprising:
One sheet metal is provided, uniformly processes hollow-out parts on the sheet metal.
9. the preparation method of support membrane according to claim 6, which is characterized in that
It is described to be externally formed with machine film layer in the metal net layer, comprising:
Macromolecule organic material is modulated, and is coated on the outside of the metal net layer, for filling the hollow-out parts and wrapping up institute
State metal net layer.
10. a kind of display device, which is characterized in that including any support membrane of claim 1-5.
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| CN110827693A (en) * | 2019-11-28 | 2020-02-21 | 昆山工研院新型平板显示技术中心有限公司 | Flexible and foldable display panel and flexible display terminal |
| CN111091762A (en) * | 2020-01-08 | 2020-05-01 | 京东方科技集团股份有限公司 | Flexible display panel assembly and flexible display device |
| CN111799314A (en) * | 2020-07-20 | 2020-10-20 | 京东方科技集团股份有限公司 | Support piece of flexible display module, preparation method of support piece, flexible display module and display device |
| CN111834293A (en) * | 2020-07-29 | 2020-10-27 | 山东傲晟智能科技有限公司 | Stretchable OLED panel and preparation method thereof |
| CN112037662A (en) * | 2020-09-24 | 2020-12-04 | 京东方科技集团股份有限公司 | Folding display support piece and display device |
| CN112133202A (en) * | 2020-10-16 | 2020-12-25 | 昆山工研院新型平板显示技术中心有限公司 | Flexible display panel and flexible display device |
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| WO2022206521A1 (en) * | 2021-03-29 | 2022-10-06 | 华为技术有限公司 | Composite layer, flexible display screen, and terminal |
| WO2023028547A1 (en) * | 2021-08-26 | 2023-03-02 | Google Llc | Hybrid mesh-based foldable display backing |
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| CN112037662A (en) * | 2020-09-24 | 2020-12-04 | 京东方科技集团股份有限公司 | Folding display support piece and display device |
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