CN109545087A - Foldable back panel structure and its display device - Google Patents
Foldable back panel structure and its display device Download PDFInfo
- Publication number
- CN109545087A CN109545087A CN201811467796.6A CN201811467796A CN109545087A CN 109545087 A CN109545087 A CN 109545087A CN 201811467796 A CN201811467796 A CN 201811467796A CN 109545087 A CN109545087 A CN 109545087A
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- Prior art keywords
- foldable
- display device
- layer
- backboard
- back panel
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
This announcement discloses a kind of foldable back panel structure, and the foldable back panel structure includes: backboard, and the backboard includes folding region and the non-collapsible district positioned at the folding region two sides, and the folding region is equipped with micro-structure close to display layer side；Elastic component, the elastic component are arranged in the folding region far from the display layer side.This announcement is by being equipped with micro-structure close to display layer side in backboard folding region, in the state that screen is folded inward, backboard inner surface is reduced to the extruding force of other film layers, the phenomenon that alleviating ripple, elastic component is equipped with far from display layer side in the folding region simultaneously, using the good ability for restoring deformation of elastic component, Folding display device display screen can be pulled to be restored to formation state, enhance the folding recovery capability of foldable display device.
Description
Technical field
This announcement is related to foldable display field more particularly to a kind of foldable back panel structure and its display device.
Background technique
With the continuous development of display technology, display panel manufacturing technology also tends to be mature, and existing display panel is main
Including organic electroluminescent display panel (Organic Light Emitting Diode, OLED), liquid crystal display panel
(Liquid Crystal Display, LCD), Plasmia indicating panel (Plasma Display Panel, PDP) etc..Now,
For being continuously increased in the public demands of portable device (such as mobile phone, tablet computer etc.), foldable display device tool
There is the features such as portable, large scale screen.
Current oled panel is supported using backboard after laser lift-off removes glass and protects screen.?
During folding screen, can also extruding force be generated to adjacent film layers while the inner surface compression of backboard is deformed, thus
Generate waviness phenomena.
In conclusion there is waviness phenomena in existing foldable display device.Therefore, it is necessary to it provides a kind of foldable
Back board structure and its folded display device improve this defect.
Summary of the invention
This announcement provides a kind of foldable back panel structure and its display device, existing shows foldable display device for solving
Lead to the problem of waviness phenomena.
This announcement provides a kind of foldable back panel structure, and the foldable back panel structure includes:
Backboard, the backboard include folding region and the non-collapsible district positioned at the folding region two sides, and the folding region is close
Display layer is equipped with micro-structure；
Elastic component, the elastic component are arranged in the folding region far from the display layer side.
According to one embodiment of this announcement, the micro-structure is one of V-type broached-tooth design or trapezoidal rod structure.
According to one embodiment of this announcement, the length of the elastic component and the folding section length and the micro-structure are long
It spends all the same.
According to one embodiment of this announcement, the material of the backboard is polyimides.
According to one embodiment of this announcement, the elastic component material selection EVA or other materials with same nature.
This announcement provides a kind of foldable display device, and the foldable display device includes as appointed in claim 1 to 5
Foldable back panel structure described in one.
According to one embodiment of this announcement, the foldable display device further includes display layer, and the display layer is set to institute
It states on backboard.
According to one embodiment of this announcement, the foldable display device includes the first adhesive layer, and the display layer passes through
First adhesive layer is attached on the backboard.
According to one embodiment of this announcement, the foldable display device further includes polarizing layer and touch control layer, the polarisation
Layer is attached on the display layer by the second adhesive layer, and the touch control layer is attached at the polarisation by third adhesive layer
On layer.
According to one embodiment of this announcement, the foldable display device further includes coating, and the coating passes through the 4th
Adhesive layer is attached in the touch control layer.
This announcement the utility model has the advantages that this announcement embodiment by backboard folding region close to display layer side be equipped with micro- knot
Structure reduces backboard inner surface to the extruding force of other film layers, alleviates showing for ripple in the state that screen is folded inward
As, while it being equipped with elastic component far from display layer side in the folding region, utilize the good energy for restoring deformation of elastic component
Power can pull Folding display device display screen to be restored to formation state, and the folding for enhancing foldable display device restores energy
Power.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of this announcement
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram for the foldable back panel structure that this announcement embodiment provides；
Fig. 2 is the structural schematic diagram for the foldable back panel structure bending state that this announcement embodiment provides；
Fig. 3 is the structural schematic diagram for the foldable display device bending state that this announcement embodiment provides.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate this announcement
Example.The direction term that this announcement is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand this announcement, rather than to
Limit this announcement.The similar unit of structure is with being given the same reference numerals in the figure.
This announcement is described further in the following with reference to the drawings and specific embodiments:
Embodiment one:
A kind of foldable back panel structure is present embodiments provided, is described in detail below with reference to Fig. 1 to Fig. 2.
As shown in Figure 1, Fig. 1 is the structural schematic diagram for the foldable back panel structure that this announcement embodiment provides, wherein can roll over
Folded back board structure includes backboard 101, and the backboard 101 is divided into folding region 103 and the non-collapsible positioned at the folding region two sides again
Area 102, does not have an interface and into a single integrated structure between the folding region 103 and non-collapsible district 102, thus in bending, so that can
Folding display device does not have apparent interface.
Can be modified by the selection to 101 material of backboard and to 101 material of backboard so that folding region have compared with
Big deformation, non-collapsible district rigidity with higher and intensity, from without folding region and non-collapsible district due to interface
In the presence of and the phenomenon that split.In the present embodiment, polyimides (PI) can be selected in the material of the backboard, and polyimides itself has
There are preferable counter-bending, stretching and high impact resistance, can satisfy in manufacturing to the need of backboard 101 buckle resistance energy
It asks.
In the present embodiment, folding region 103 close to display layer side be equipped with micro-structure 104,104 side of micro-structure with it is described
Display layer is in contact.As shown in Fig. 2, structural schematic diagram when Fig. 2 is foldable back panel structure bending state.In foldable display
When device is folded inward, micro-structure 104 can effectively subtract to middle shrinkage because there are gaps between each other for micro-structure 104
It is internal to generate biggish deformation quantity to avoid folding region 103 under bending state for the deformation bulge quantity of small folding region 103
The extruding force that other film layers of surface generate, leads to the generation of waviness phenomena.
Preferably, micro-structure 104 can be V-type broached-tooth design shown in FIG. 1, equally be also possible to trapezoidal column structure.
In the present embodiment, backboard 101 further includes elastic component 105, and the elastic component 105 is arranged in the folding region
103 far from display layer side.As shown in Figure 1, folding region 103 is equipped with groove 106 far from display layer side, the groove 106 is cut
Face shape is rectangle, and the elastic component 105 is set in groove 106.The elastic component 105 has good recovery deformation
Ability can pull foldable back panel structure and foldable display device to restore formation state.
Preferably, the material that the elastic component 105 is selected is ethylene-vinyl acetate copolymer (EVA), under EVA room temperature
For solid, there is good buffering, antidetonation, heat-insulated, humidity resistance, while the content of the performance of EVA and vinyl acetate (VA)
There is very big relationship, when the content of VA increases, resilience, flexibility, adhesiveness, stress cracking resistance and the impact of EVA
Performance can all improve, and for VA content in 45%-55%, the elasticity of EVA is good, and the material as elastic component 105 is capable of providing
Foldable back panel structure can be restored formation state by good recovery deformability.It can also select in some embodiments
Other materials with same nature.
Preferably, the length of the elastic component 105 and 103 length of folding region and the micro-structure 104 are in institute
The distribution length for stating folding region 103 is all the same, and specific length needs depending on the length of actual design panel bent area.
Embodiment two
A kind of foldable display device is present embodiments provided, is described in detail below with reference to Fig. 3.
As shown in figure 3, Fig. 3 is a kind of structural schematic diagram of foldable display device bending state provided in this embodiment,
The foldable display device includes backboard 301, and the backboard 301 is by folding region 303 and positioned at the non-of the folding region two sides
Folding region 302 forms, and does not have interface between the folding region 303 and non-collapsible district 302 and into a single integrated structure, thus bending
When, so that foldable display device does not have apparent interface.
In the present embodiment, polyimides (PI) can be selected in the material of the backboard, and polyimides itself has preferably
Counter-bending, stretching and high impact resistance can satisfy the demand in manufacturing to backboard 301 buckle resistance energy.
As shown in figure 3, folding region 303 is equipped with micro-structure 304 close to display layer side, in foldable display device to infolding
When folded, micro-structure 304 is to middle shrinkage, because micro-structure 304 is between each other there are gap, the folding region that can be effectively reduced
303 deformation bulge quantity generates biggish other films of deformation quantity inner surface to avoid folding region 303 under bending state
The extruding force that layer generates, leads to the generation of waviness phenomena.In the present embodiment, micro-structure 304 is trapezoidal column structure.
In the present embodiment, backboard 301 further includes elastic component 305, and the elastic component 305 is arranged in the folding region
303 far from display layer side.As shown in figure 3, folding region 303 is equipped with groove 306, the elastic component far from display layer side
305 are set in groove 306.The elastic component 305 has good recovery deformability, can pull foldable back panel knot
Structure and foldable display device restore formation state.
In the present embodiment, foldable display device further includes display layer 302, and the display layer 308 is set to backboard 301
On, it is mutually bonded between display layer 308 and backboard 301 by the first adhesive layer 307.Foldable display device further includes polarisation
Layer 310 and touch control layer 312, the polarizing layer 310 is attached on the display layer 308 by the second adhesive layer 309, described
Touch control layer 312 is attached on the polarizing layer 310 by third adhesive layer 311.
In the present embodiment, the foldable display device further includes coating 314, and the coating 314 passes through the 4th
Adhesive layer 313 is attached in the touch control layer 312.
In the present embodiment, first adhesive layer 307, the second adhesive layer 309, third adhesive layer 311 and
4th adhesive layer 313 is all made of optical clear adhesive.The optical clear adhesive has except certain glue-joint strength,
It is also equipped with the features such as light transmittance is high, elasticity is good, soft, can not only bond each film layer of display device, it equally can also be with
Play the role of buffer protection to adjacent film layers as filler.
This announcement embodiment is folded inward by being equipped with micro-structure close to display layer side in backboard folding region in screen
Under state, the phenomenon that reducing backboard inner surface to the extruding force of other film layers, alleviate ripple, and meanwhile it is remote in the folding region
It is equipped with elastic component from display layer side, using the good ability for restoring deformation of elastic component, Folding display can be pulled to fill
It sets display screen and is restored to formation state, enhance the recovery capability of foldable display device.
Although above preferred embodiment is not to limit in conclusion this announcement is disclosed above with preferred embodiment
This announcement, those skilled in the art can make various changes and profit in the spirit and scope for not departing from this announcement
Decorations, therefore the protection scope of this announcement is on the basis of the range that claim defines.
Claims (10)
1. a kind of foldable back panel structure, which is characterized in that the foldable back panel structure includes:
Backboard, the backboard include folding region and the non-collapsible district positioned at the folding region two sides, and the folding region is close to display
Layer side is equipped with micro-structure；
Elastic component, the elastic component are arranged in the folding region far from the display layer side.
2. foldable back panel structure as described in claim 1, which is characterized in that the micro-structure be V-type broached-tooth design or
One of trapezoidal rod structure.
3. foldable back panel structure as described in claim 1, which is characterized in that the length of the elastic component and the folding
Section length is identical.
4. foldable back panel structure as described in claim 1, which is characterized in that the material of the backboard is polyimides.
5. foldable back panel structure as described in claim 1, which is characterized in that the material of the elastic component is EVA.
6. a kind of foldable display device, which is characterized in that the foldable display device includes as appointed in claim 1 to 5
Foldable back panel structure described in one.
7. foldable display device as claimed in claim 6, which is characterized in that the foldable display device further includes display
Layer, the display layer are set on the backboard.
8. foldable display device as described in claim 1, which is characterized in that the foldable display device includes first viscous
Glue agent layer, the display layer are attached on the backboard by first adhesive layer.
9. foldable display device as described in claim 1, which is characterized in that the foldable display device further includes polarisation
Layer and touch control layer, the polarizing layer are attached on the display layer by the second adhesive layer, and the touch control layer passes through third
Adhesive layer is attached on the polarizing layer.
10. foldable display device as claimed in claim 9, which is characterized in that the foldable display device further includes covering
Cap rock, the coating are attached in the touch control layer by the 4th adhesive layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467796.6A CN109545087A (en) | 2018-12-03 | 2018-12-03 | Foldable back panel structure and its display device |
| PCT/CN2019/072036 WO2020113784A1 (en) | 2018-12-03 | 2019-01-16 | Foldable backplate structure and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467796.6A CN109545087A (en) | 2018-12-03 | 2018-12-03 | Foldable back panel structure and its display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109545087A true CN109545087A (en) | 2019-03-29 |
Family
ID=65852759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811467796.6A Pending CN109545087A (en) | 2018-12-03 | 2018-12-03 | Foldable back panel structure and its display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109545087A (en) |
| WO (1) | WO2020113784A1 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947299A (en) * | 2019-04-17 | 2019-06-28 | 盈天实业(深圳)有限公司 | Folding film layer structure and preparation method thereof, touch module and touch screen |
| CN110206969A (en) * | 2019-05-27 | 2019-09-06 | 武汉华星光电半导体显示技术有限公司 | Support chip and flexible display apparatus with support chip |
| CN110444116A (en) * | 2019-07-16 | 2019-11-12 | 武汉华星光电半导体显示技术有限公司 | Flexible base board and preparation method thereof |
| CN111081150A (en) * | 2019-12-31 | 2020-04-28 | 厦门天马微电子有限公司 | Support membrane and display device |
| CN111833751A (en) * | 2020-08-04 | 2020-10-27 | 京东方科技集团股份有限公司 | Supporting plate, folding display panel and folding display device |
| CN112086571A (en) * | 2020-09-09 | 2020-12-15 | 武汉华星光电半导体显示技术有限公司 | Flexible display module |
| EP3757668A1 (en) * | 2019-06-25 | 2020-12-30 | Samsung Display Co., Ltd. | Display device |
| CN113178133A (en) * | 2021-05-06 | 2021-07-27 | 合肥维信诺科技有限公司 | Composite support film and display device |
| CN113241010A (en) * | 2021-05-25 | 2021-08-10 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113380148A (en) * | 2021-06-22 | 2021-09-10 | 京东方科技集团股份有限公司 | Flexible screen module, method for preparing flexible screen module and display device |
| CN113644102A (en) * | 2021-08-10 | 2021-11-12 | 京东方科技集团股份有限公司 | Display module, preparation method thereof and display device |
| CN113707007A (en) * | 2020-05-21 | 2021-11-26 | 华为技术有限公司 | Display panel and display device |
| CN114171703A (en) * | 2021-12-06 | 2022-03-11 | 深圳市华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| WO2022077689A1 (en) * | 2020-10-13 | 2022-04-21 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| CN114694512A (en) * | 2022-04-25 | 2022-07-01 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
| WO2023123549A1 (en) * | 2021-12-28 | 2023-07-06 | 深圳市华星光电半导体显示技术有限公司 | Foldable display panel and manufacturing method for foldable display panel |
| US11797053B2 (en) | 2020-11-06 | 2023-10-24 | Samsung Electronics Co., Ltd. | Electric device including flexible display |
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| CN109947299A (en) * | 2019-04-17 | 2019-06-28 | 盈天实业(深圳)有限公司 | Folding film layer structure and preparation method thereof, touch module and touch screen |
| CN110206969A (en) * | 2019-05-27 | 2019-09-06 | 武汉华星光电半导体显示技术有限公司 | Support chip and flexible display apparatus with support chip |
| EP3757668A1 (en) * | 2019-06-25 | 2020-12-30 | Samsung Display Co., Ltd. | Display device |
| US11296286B2 (en) | 2019-06-25 | 2022-04-05 | Samsung Display Co., Ltd. | Display device having flexible support member having openings |
| CN110444116A (en) * | 2019-07-16 | 2019-11-12 | 武汉华星光电半导体显示技术有限公司 | Flexible base board and preparation method thereof |
| CN111081150A (en) * | 2019-12-31 | 2020-04-28 | 厦门天马微电子有限公司 | Support membrane and display device |
| CN113707007A (en) * | 2020-05-21 | 2021-11-26 | 华为技术有限公司 | Display panel and display device |
| CN111833751A (en) * | 2020-08-04 | 2020-10-27 | 京东方科技集团股份有限公司 | Supporting plate, folding display panel and folding display device |
| CN111833751B (en) * | 2020-08-04 | 2022-05-27 | 京东方科技集团股份有限公司 | Supporting plate, folding display panel and folding display device |
| CN112086571A (en) * | 2020-09-09 | 2020-12-15 | 武汉华星光电半导体显示技术有限公司 | Flexible display module |
| WO2022077689A1 (en) * | 2020-10-13 | 2022-04-21 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| US11714456B2 (en) | 2020-10-13 | 2023-08-01 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Foldable display module |
| US11797053B2 (en) | 2020-11-06 | 2023-10-24 | Samsung Electronics Co., Ltd. | Electric device including flexible display |
| CN113178133A (en) * | 2021-05-06 | 2021-07-27 | 合肥维信诺科技有限公司 | Composite support film and display device |
| CN113241010A (en) * | 2021-05-25 | 2021-08-10 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113380148A (en) * | 2021-06-22 | 2021-09-10 | 京东方科技集团股份有限公司 | Flexible screen module, method for preparing flexible screen module and display device |
| CN113644102A (en) * | 2021-08-10 | 2021-11-12 | 京东方科技集团股份有限公司 | Display module, preparation method thereof and display device |
| CN113644102B (en) * | 2021-08-10 | 2024-03-15 | 京东方科技集团股份有限公司 | Display module, preparation method thereof and display device |
| CN114171703A (en) * | 2021-12-06 | 2022-03-11 | 深圳市华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| CN114171703B (en) * | 2021-12-06 | 2023-10-17 | 深圳市华星光电半导体显示技术有限公司 | Display panel, display device and manufacturing method of display panel |
| WO2023123549A1 (en) * | 2021-12-28 | 2023-07-06 | 深圳市华星光电半导体显示技术有限公司 | Foldable display panel and manufacturing method for foldable display panel |
| CN114694512A (en) * | 2022-04-25 | 2022-07-01 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
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| Publication number | Publication date |
|---|---|
| WO2020113784A1 (en) | 2020-06-11 |
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Application publication date: 20190329 |