CN108832019A - A kind of cover board and flexible display apparatus for flexible display apparatus - Google Patents
A kind of cover board and flexible display apparatus for flexible display apparatus Download PDFInfo
- Publication number
- CN108832019A CN108832019A CN201810644996.8A CN201810644996A CN108832019A CN 108832019 A CN108832019 A CN 108832019A CN 201810644996 A CN201810644996 A CN 201810644996A CN 108832019 A CN108832019 A CN 108832019A
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- Prior art keywords
- cover board
- display apparatus
- flexible display
- memorial alloy
- foldable portion
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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
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/841—Self-supporting sealing arrangements
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of cover board and flexible display apparatus for flexible display apparatus, which is included at least：First non-collapsible portion；Second non-collapsible portion；It with foldable portion, is connected between the first non-collapsible portion and second folding part, wherein the foldable portion is the foldable portion of memorial alloy with deformation function, so that the flexible display apparatus is bent along the foldable portion of the memorial alloy.By the above-mentioned means, the present invention can expand the range of flexible display apparatus bendable folding part bending angle and improve the flexibility of bending shape.
Description
Technical field
The present invention relates to flexible display technologies fields, more particularly to a kind of cover board and flexibility for flexible display apparatus
Display device.
Background technique
With the continuous development of display technology, requirement of the people to display device is higher and higher, correspondingly, bent is soft
For property display device with its flexible deformation, display area is big, becomes focus concerned by people.
In the prior art, the bendable folding part of flexible display apparatus generallys use the preparation of the elastic materials such as rubber, the bullets such as rubber
Property material can bending angle to bendable folding part and bending shape generate limitation, and the poor ductility of bendable folding part, be folded over
The problems such as display screen generation fold of flexible display apparatus is easily led in journey, leads to the reduced service life of flexible display apparatus.
Present inventor has found the bending of existing flexible display apparatus bendable folding part in long-term R&D process
Angular range is limited and the flexibility of bending shape is poor.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of cover boards for flexible display apparatus and Flexible Displays to fill
It sets, the range of flexible display apparatus bendable folding part bending angle can be expanded and improves the flexibility of bending shape.
In order to solve the above technical problems, one technical scheme adopted by the invention is that：It provides a kind of for Flexible Displays dress
The cover board set.
Wherein, which includes at least：
First non-collapsible portion；Second non-collapsible portion；With foldable portion, it is connected to the first non-collapsible portion and second folding
Between portion, wherein the foldable portion be the foldable portion of memorial alloy with deformation function so that the flexible display apparatus along
The foldable portion of the memorial alloy is bent.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of flexible display apparatus is provided.
Wherein, which includes any cover board.
The beneficial effects of the invention are as follows：It is in contrast to the prior art, the present invention is using memorial alloy preparation for soft
Property display device cover board foldable portion, by changing to the treatment conditions of the memorial alloy, can flexible design this can roll over
The bending angle and bending shape in folded portion are conducive to expand the range of flexible display apparatus bendable folding part bending angle and improve it
The flexibility of bending shape.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.Wherein：
Fig. 1 is a kind of structural schematic diagram of one embodiment of cover board for flexible display apparatus of the present invention；
Fig. 2 is a kind of structural schematic diagram of another embodiment of cover board for flexible display apparatus of the invention；
Fig. 3 is the structural schematic diagram of one embodiment of pierced pattern in heretofore described foldable portion；
Fig. 4 is the structural schematic diagram of another embodiment of pierced pattern in heretofore described foldable portion；
Fig. 5 is the structural schematic diagram of the pierced pattern third embodiment in heretofore described foldable portion；
Fig. 6 is a kind of structural schematic diagram of the cover board third embodiment for flexible display apparatus of the present invention；
Fig. 7 is a kind of structural schematic diagram of one embodiment of flexible display apparatus of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are obtained every other under the premise of not making creative labor
Embodiment shall fall within the protection scope of the present invention.
Refering to fig. 1, Fig. 1 is a kind of structural schematic diagram of one embodiment of cover board for flexible display apparatus of the present invention,
The cover board 10 includes at least：
First non-collapsible portion 100；Second non-collapsible portion 300；With foldable portion 200, it is connected to the first non-collapsible portion 100
Between second folding part 300, wherein the foldable portion 200 is the foldable portion 200 of memorial alloy with deformation function,
So that the flexible display apparatus is bent along the foldable portion 200 of the memorial alloy.
In the present embodiment, the foldable portion using memorial alloy preparation for the cover board of flexible display apparatus, passes through
Change the treatment conditions to the memorial alloy, is capable of the bending angle and bending shape in the flexible design foldable portion, is conducive to
Expand the range of flexible display apparatus bendable folding part bending angle and improves the flexibility of bending shape.
Further, which is part corresponding with display screen in display device, also the as backboard of display device.It is aobvious
During use, display screen face user, cover board is back to user, and cover board and display screen are all outside display device for showing device
See the component part of part.
Further, in one embodiment, please further refer to Fig. 1, which is arranged in foldable portion 200
There is the pierced pattern 210 of enhancing ductility.The foldable portion that the pierced pattern is arranged can enhance the memorial alloy folding part
Ductility, certain extension space is provided in folding process, avoid the display screen of flexible display apparatus because squeeze generate
The problems such as fold, extends the service life of flexible display apparatus.
Further, in another embodiment, referring to FIG. 2, Fig. 2 is of the invention a kind of for flexible display apparatus
Another embodiment of cover board structural schematic diagram, which includes the foldable portion 22 of at least one memorial alloy, different
The foldable portion 22 of the memorial alloy can be such that non-collapsible portion 11 connected to it is bent along identical or different direction.Further, should
It may include multiple foldable portions 22 on the cover board of flexible display apparatus and fix company with each foldable portion 22
The non-collapsible portion 11 connect, and material composition, curved shape and the bending angle in each foldable portion 22 can be according to need
It is designed.Specifically, by the foldable portion of the memorial alloy 22 element species and content be adjusted, or into
The condition of row heat treatment or stress treatment process, e.g., temperature, time, bending radius of curvature and overbending direction etc. are regulated and controled, can
It is bent the non-collapsible portion 11 connecting with foldable portion 22 along identical or different direction.
It in one embodiment, is of the present invention respectively please also refer to Fig. 3, Fig. 4 and Fig. 5, Fig. 3, Fig. 4 and Fig. 5
The structural schematic diagram of the pierced pattern different embodiments in the foldable portion pierced pattern 210 can be engraved for spaced rectangle
The combination of one or both of null pattern, diamond shape pierced pattern or round pierced pattern or more.The pierced pattern 210 is set
Setting direction is that short side direction parallel with the longitudinal direction of the flexible display apparatus or with the flexible display apparatus is parallel, can also be with
Be along with the angled arrangement of the longitudinal direction of the flexible display apparatus, the arrangement mode of the pierced pattern 210 can be
The array of rule, can also be unordered formula, as long as can enhance the ductility of the memorial alloy folding part 200.At one
In embodiment, for the preparation process for simplifying the pierced pattern, ductility is improved, which is rectangle hollow out figure
Case.
In another embodiment, which includes the hollow out of the pierced pattern being stamped and formed out, printing formation
The combination of one or more of the pierced pattern that pattern or laser cutting are formed.In the foldable portion 200 of the memorial alloy
On the pierced pattern 210 that is formed by the way of punching press, printing or laser cutting, preparation process can be simplified, improve the note
The intensity for recalling the foldable portion 200 of alloy avoids the foldable portion 200 of the memorial alloy from being broken during curved.Into one
Step, for the foldable portion 200 of the memorial alloy after the accuracy for improving 210 positions and dimensions of pierced pattern, and processing
Surface smoothness, the pierced pattern 210 are the pierced pattern that laser cutting is formed.
Further, which makes the foldable portion 200 of the memorial alloy have good extension in bending
Property, especially when bending angle is larger, e.g., when being greater than 150 °, the foldable portion of the memorial alloy with the pierced pattern 210
200 are capable of forming and reserve space, avoid the display screen of flexible display apparatus in the cover board 10 for being used for flexible display apparatus with this
Fold occurs when bending, to improve the service life of the flexible display apparatus.
In the present embodiment, the material of memory gold includes but is not limited to Ni-Ti system alloy, Au-Cd system alloy, Ag-
Cd system alloy, Cu-Zn system alloy, Cu-Zn-Al system alloy, Cu-Zn-Sn system alloy, Cu-Zn-Si system alloy, Cu-Sn system close
Gold, Cu-Zn-Ga system alloy, In-Ti system alloy, Au-Cu-Zn system alloy, Ni-Al system alloy, Fe-Pt system alloy, Ti-Ni system
Alloy, Ti-Ni-Pd system alloy, Ti-Nb system alloy, U-Nb system alloy, Fe-Mn-Si system alloy and Cu-Al-Ni alloy.
In one embodiment, the foldable portion 200 of the memorial alloy is the foldable portion of Ni-Ti system memorial alloy or Cu-
The foldable portion of Al-Ni memorial alloy, in the foldable portion of Ni-Ti memorial alloy, the mass fraction of W metal is 40%-60%,
Such as, 40%, 45%, 50%, 55% or 60% etc., the mass fraction of W metal is in the foldable portion of Cu-Al-Ni memorial alloy
3%-8%, e.g., 3%, 4%, 5%, 6%, 7% or 8% etc., the mass fraction of metal Al is 10%-20%, e.g., 10%,
12%, 14%, 16%, 18% or 20% etc..
Memorial alloy can generate double-pass memory effect, i.e., when memorial alloy is in phase transition temperature or more, restore high-temperature-phase
Shape restores low-temperature phase shape when cooling.The double-pass memory effect is because of the martensitic traoformation of thermoelasticity namely the memorial alloy
Foldable portion 200 is in martensitic, and the martensitic traoformation in the foldable portion 200 of the memorial alloy by temperature and/or answers masterpiece
With generation.
Further, the phase transition temperature of Ni-Ti system memorial alloy is 40 DEG C, the ratio that Cu-Al-Ni alloy passes through allotment Al
And plus load, phase transition temperature can adjust between -200 DEG C -400 DEG C, the available note with different phase transition temperatures
Recall alloy, meets the needs of different.And the heat generated in operational process for flexible display apparatus and/or user touch
The heat of process release would generally make the cover board temperature of flexible apparatus in operating status be in certain range, e.g., greatly
In 38 DEG C.In the present embodiment, the transformation temperature in the foldable portion 200 of the memorial alloy is 35 DEG C -40 DEG C, e.g., 35 DEG C, 38 DEG C
Or 40 DEG C.Further, referring to FIG. 6, Fig. 6 is a kind of cover board third embodiment for flexible display apparatus of the present invention
Structural schematic diagram, when 10 temperature of cover board for flexible display apparatus is not more than the phase transition temperature, the flexible display apparatus
It is likely to be at unused state, the foldable portion 200 of the memorial alloy is shunk, so that the flexible display apparatus is along the memory
The foldable portion 200 of alloy is bent, convenient for the flexible display apparatus to be bent into the shape of needs.
Further, the martensitic phase in the foldable portion of Ni-Ti memorial alloy or the foldable portion of Cu-Al-Ni memorial alloy
Change is generated by temperature, that is, is generated by heat treatment process.Specifically, being prepared by taking Cu-Al-Ni memorial alloy as an example
Journey includes：Under nitrogen protection atmosphere, the first melting at 1250 DEG C by Ni metal and W metal, after W metal fusing, by temperature
Control is to 1150 DEG C；For the loss for reducing metal Al, it is eventually adding metal Al, mold temperature is set as 1070 DEG C, starts casting mold,
20min is kept the temperature at 900 DEG C after the completion and carries out solution treatment, eliminates 2 phase of γ；According to the radius of curvature R of required bending, such as
R=5mm, it is to apply fixed stress 20min at 5mm that cured alloy sheet, which is wound on radius, at such a temperature；Fixed stress size
The self weight of cover board according to flexible display apparatus and for flexible display apparatus determines, stretches it by the heat treatment and stress
Afterwards, which has shape changing memory function.Further, by the mass fraction to different metal in memorial alloy into
Row control, adjusts the process conditions of heat treatment process, can be adjusted to the phase transition temperature of the memorial alloy of preparation, so that
The foldable portion 200 of the memorial alloy is in bending state when being lower than the phase transition temperature, is in when being not less than the phase transition temperature
Un-flexed state meets the needs of different application field is to different phase transition temperatures.
In one embodiment, the first non-collapsible portion 100 and the second non-collapsible portion 300 respectively with the memorial alloy
Foldable portion 200 is fixedly connected, and e.g., the mode that the mode of hot melt is fixedly connected or welds is fixedly connected.The first non-collapsible portion
100 material includes glass, metal, a combination of one or more in ceramics or plastics；The material in the second non-collapsible portion 300
Matter includes glass, metal, a combination of one or more in ceramics or plastics.
In one embodiment, for make the first non-collapsible portion 100 and the second non-collapsible portion 300 respectively with the note
Recall the foldable portion 200 of alloy and connect stronger reliable, be by welding fixedly connected with the two, and according to this first
The material in non-collapsible portion 100 and the second non-collapsible portion 300 selects different welding methods.Further, by the first non-folding
After folded portion 100 and the second non-collapsible portion 300 are connect with the foldable portion 200 of the memorial alloy respectively, also need to this for flexibility
The cover board 10 of display device is surface-treated, the method for the surface treatment include surface anodization, sanding and polishing, spray painting or
One of surface treatment methods such as baking vanish or a variety of combinations, to further provide for the cover board 10 for flexible display apparatus
Quality.
In another embodiment, the first non-collapsible portion 100 and the second non-collapsible portion 300 are the non-folding of memorial alloy
Folded region.Namely the cover board 10 for being used for flexible display apparatus is made of memorial alloy, certainly, constitutes the first non-collapsible portion
100 is identical or different with the type of the memorial alloy in the second non-collapsible portion 300.In one embodiment, this is first non-
Folding part 100 is prepared with the second non-collapsible portion 300 and the foldable portion 200 of the memorial alloy by same memorial alloy, and
The mass fraction of each component is identical in the memorial alloy.In this way, this can be used for any of the cover board 10 of flexible display apparatus
Regional processing is at martensitic state and carries out hollow processing, correspondingly, the cover board 10 for being used for flexible display apparatus can be in office
The bending of arbitrary shape occurs for meaning position, and then makes the flexible display apparatus that the bending of arbitrary shape occur at an arbitrary position, has
Conducive to the needs for better meeting user.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of flexible display apparatus is provided.
Referring to FIG. 7, Fig. 7 is a kind of structural schematic diagram of one embodiment of flexible display apparatus of the present invention, wherein Flexible Displays dress
Setting 1 includes any cover board 10.In the present embodiment, which can be flexible mobile phone, flexible TV
Deng.
In one embodiment, which further includes the display screen (not shown) being correspondingly arranged with the cover board, this is aobvious
Display screen is flexible OLED display.Further, during the flexible display apparatus 1 carries out curved, the cover board is aobvious with this
Display screen bends simultaneously.The flexible OLED display is using display screen made of organic electroluminescent LED, due to same
When have self-luminous organic electric exciting light-emitting diode, have that be not required to backlight, contrast high, construction and processing procedure simpler etc. excellent
Performance, can adapt to a variety of different application environments, be conducive to the popularization and application of the flexible display apparatus 1.
In conclusion the invention discloses a kind of cover board and flexible display apparatus for flexible display apparatus, the cover board
Including：First non-collapsible portion；Second non-collapsible portion；With foldable portion, it is connected to the first non-collapsible portion and second folding part
Between, wherein the foldable portion is the foldable portion of memorial alloy with deformation function, so that the flexible display apparatus is along this
The foldable portion of memorial alloy is bent.By the above-mentioned means, the present invention be conducive to expand flexible display apparatus bendable folding part it is curved
The range of dog-ear degree and the flexibility for improving bending shape.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of cover board for flexible display apparatus, which is characterized in that the cover board includes at least：
First non-collapsible portion；
Second non-collapsible portion；With
Foldable portion is connected between first non-collapsible portion and second folding part, wherein the foldable portion is tool
There is the foldable portion of the memorial alloy of deformation function, so that the flexible display apparatus is carried out along the foldable portion of the memorial alloy
Bending.
2. cover board according to claim 1, which is characterized in that be provided with enhancing in the foldable portion of memorial alloy and extend
The pierced pattern of property.
3. cover board according to claim 2, which is characterized in that the pierced pattern is spaced rectangle hollow out figure
The combination of one or more of case, diamond shape pierced pattern or round pierced pattern.
4. cover board according to claim 2, which is characterized in that the pierced pattern include the pierced pattern being stamped and formed out,
Print the combination of one or more of pierced pattern of the pierced pattern formed or laser cutting formation.
5. cover board according to claim 1, which is characterized in that the foldable portion of memorial alloy is Ni-Ti memorial alloy
Foldable portion or the foldable portion of Cu-Al-Ni memorial alloy.
6. cover board according to claim 1, which is characterized in that the cover board includes that at least one described memorial alloy can be rolled over
Folded portion, the different foldable portions of memorial alloy can be such that non-collapsible portion connected to it is bent along identical or different direction.
7. cover board according to claim 2, which is characterized in that the material in first non-collapsible portion include glass, metal,
A combination of one or more in ceramics or plastics；The material in second non-collapsible portion includes glass, metal, ceramics or modeling
A combination of one or more in material.
8. cover board according to claim 7, which is characterized in that first non-collapsible portion is with second non-collapsible portion
Memorial alloy includes non-collapsible region.
9. a kind of flexible display apparatus, which is characterized in that the flexible display apparatus includes claim 1-8 described in any item
Cover board.
10. device according to claim 9, which is characterized in that described device further includes being correspondingly arranged with the cover board
Display screen, the display screen are flexible OLED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644996.8A CN108832019B (en) | 2018-06-21 | 2018-06-21 | Cover plate for flexible display device and flexible display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644996.8A CN108832019B (en) | 2018-06-21 | 2018-06-21 | Cover plate for flexible display device and flexible display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108832019A true CN108832019A (en) | 2018-11-16 |
| CN108832019B CN108832019B (en) | 2020-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810644996.8A Active CN108832019B (en) | 2018-06-21 | 2018-06-21 | Cover plate for flexible display device and flexible display device |
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| Country | Link |
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| CN (1) | CN108832019B (en) |
Cited By (4)
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| CN109360499A (en) * | 2018-12-17 | 2019-02-19 | 上海天马微电子有限公司 | A kind of Flexible Displays mould group and display device |
| CN110517588A (en) * | 2019-08-29 | 2019-11-29 | 京东方科技集团股份有限公司 | Flexible Displays cover board and preparation method thereof, foldable display device |
| WO2020062482A1 (en) * | 2018-09-25 | 2020-04-02 | 武汉华星光电半导体显示技术有限公司 | Cover plate for use in flexible display, and flexible display screen |
| CN115525100A (en) * | 2022-01-11 | 2022-12-27 | 荣耀终端有限公司 | Display module and electronic equipment |
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| WO2020062482A1 (en) * | 2018-09-25 | 2020-04-02 | 武汉华星光电半导体显示技术有限公司 | Cover plate for use in flexible display, and flexible display screen |
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| Publication number | Publication date |
|---|---|
| CN108832019B (en) | 2020-05-05 |
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