CN210627728U - Foldable display device - Google Patents
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- CN210627728U CN210627728U CN201922436341.4U CN201922436341U CN210627728U CN 210627728 U CN210627728 U CN 210627728U CN 201922436341 U CN201922436341 U CN 201922436341U CN 210627728 U CN210627728 U CN 210627728U
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Abstract
The utility model provides a foldable display device, include: the display panel comprises a plurality of functional layers, and the functional layers are bonded through elastic glue layers; when the display panel is bent, all the functional layers move relatively; the limiting pieces are arranged on the side faces of the two ends of the display panel; the buffer layer is arranged between the side faces at the two ends of the display panel and the limiting pieces. The foldable display device of the utility model bonds each functional layer through the elastic glue layer, so that each functional layer can move relatively, and the stress between each functional layer is reduced; simultaneously, guaranteed the stability of the side at display panel both ends when buckling through buffer layer and locating part, the utility model discloses a scheme reliability and stability when having improved collapsible display device and buckling to improve collapsible display device's performance and life-span.
Description
Technical Field
The utility model relates to a show the field, specifically speaking relates to a collapsible display device.
Background
With the increasing development of flexible display technology, flexible display screens are receiving more and more attention. Compared with the conventional display screen, the flexible display screen is lighter and thinner in size, can correspondingly reduce power consumption, and can meet the display requirements of high resolution and different sizes on the basis of the characteristics of flexibility and good flexibility.
The flexible display panel is under the action of bending stress when being bent, the break difference can appear between each membranous layer, at present, the flexible display device is bonded by colloids such as optical cement among each layer, and the colloids can be fine after each membranous layer is bonded to fix each membranous layer as a whole, however, to the flexible screen of buckling, this becomes a constraint, and the crease appears easily when each membranous layer is buckled.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, an object of the present invention is to provide a foldable display device, in which functional layers are bonded together by an elastic adhesive layer, so that the functional layers can move relatively to each other, and the stress between the functional layers is reduced; simultaneously, the stability of the side at display panel both ends when buckling has been guaranteed through buffer layer and locating part.
An embodiment of the utility model provides a foldable display device, include:
the display panel comprises a plurality of functional layers, and the functional layers are bonded through elastic glue layers; when the display panel is bent, all the functional layers move relatively;
the limiting pieces are arranged on the side faces of the two ends of the display panel;
the buffer layer is arranged between the side faces at the two ends of the display panel and the limiting pieces.
According to an example of the present invention, the buffer layer is an ester material layer.
According to an example of the present invention, the buffer layer is a polyurethane layer, a polycarbonate layer or a polycaprolactone layer.
According to an example of the present invention, the buffer layer is a buffer layer having a resilience of between 60% and 80%.
According to an example of the present invention, the buffer layer is a buffer layer with a shore hardness of 60-90.
According to an example of the present invention, the thickness of the buffer layer is between 50.0 μm and 200.0 μm.
According to an example of the present invention, the elastic adhesive layer is a dimethyl silica gel layer, a methyl vinyl silica gel layer or a methyl phenyl vinyl silica gel layer.
According to an example of the present invention, the thickness of the elastic glue layer is between 5.0 μm and 50.0 μm.
According to an example of the present invention, the stopper is a resin member.
According to an example of the present invention, the plurality of functional layers includes a support layer and a light emitting layer.
According to an example of the present invention, the functional layer further includes any one or more layers of a polarizing layer, a touch layer, and a cover window layer.
The utility model discloses a thereby collapsible display device has reduced the device when buckling the stress between each functional layer and has reduced the probability that the crease appears when buckling, and the buffer layer of high resilience combines the locating part, and display panel's reliability and stability when guaranteeing to buckle, whole scheme has improved collapsible display device's performance and life-span.
Drawings
Other features, objects, and advantages of the invention will be apparent from the following detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings and which is incorporated in and constitutes a part of this specification, illustrating embodiments consistent with this application and together with the description serve to explain the principles of this application. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a foldable display device according to an embodiment of the present invention;
fig. 2-3 are schematic structural views illustrating a foldable display device according to an embodiment of the present invention when being bent;
fig. 4 is a schematic view illustrating relative movement of two functional layers when the display panel according to an embodiment of the present invention is bent;
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
Fig. 1 is a schematic structural diagram of a foldable display device according to an embodiment of the present invention, specifically, the device includes a display panel 100, the display panel 100 includes a plurality of functional layers, and the functional layers of the display panel include a supporting layer, a light emitting layer, a polarizing layer, a touch layer, and a cover window layer. In an embodiment of the present invention, the display panel 100 of an embodiment includes a support layer and a light emitting layer. The display panel 100 of another embodiment further includes a support layer 120 and a light emitting layer 130, a polarizing layer 140, a touch layer 150, and a cover window layer 160.
It should be noted that each functional layer of the present invention is flexible and bendable, for example, the present invention discloses a flexible supporting layer, the flexible supporting layer can be a structure with a single layer or a multi-layer flexible film, the flexible film can be made of flexible substrate material such as Polyimide (PI), polyethylene terephthalate (PET), polybutylene naphthalate (PBN) or polycarbonate, and can also be made of metal foil. In the present embodiment, a single layer PI film is used for the flexible substrate. In other embodiments of the present invention, the supporting layer may be a multilayer PI film, or a multilayer PET film, or a multilayer film structure in which a PI film and a PET are alternately stacked.
It should be noted that, in the embodiment of the present invention, the functional layers of the display panel 100 are bonded by the elastic glue layer 110, that is, the bonding between the functional layers is elastic, and when the display panel 100 is bent, the functional layers move relatively. In a specific embodiment, the elastic adhesive layer may be a dimethyl silica gel layer, a methyl vinyl silica gel layer, or a methyl phenyl vinyl silica gel layer. The thickness of the elastic glue layer is between 5.0 μm and 50.0 μm, and preferably, the thickness of the elastic glue layer is 10.0 μm. The utility model discloses a collapsible display device passes through the elastic glue layer, can relative movement between each functional layer, can reduce the stress between each functional layer effectively to reduce each functional layer of display panel because buckle and the damage that causes, reliability and stability when improving flexible display device and buckling.
As shown in fig. 1, the foldable display device of the present invention further includes a limiting member 200 disposed at the side of the two ends of the display panel 100; and a buffer layer 300, wherein the buffer layer 300 is disposed between the side surfaces of the two ends of the display panel 100 and the position-limiting member 200.
In an embodiment, the position-limiting member 200 is a half-frame structure, the half-frame structure wraps the side surfaces of the two ends of the display panel 100, the position-limiting member 200 is a hard material with a supporting function, and may be a resin member, specifically, the resin member may be polyethylene, polystyrene, polytetrafluoroethylene, polypropylene, or polycarbonate, and the like, and preferably, the thickness of the position-limiting member is between 10.0 μm and 100.0 μm.
Fig. 2-3 are schematic structural diagrams of the foldable display device according to an embodiment of the present invention when being bent. Fig. 1 is a schematic structural diagram of the display panel 100 being bent inward to be folded, where the display panel 100 can be bent inward, that is, the display surface of the display panel 100 is bent inward. Fig. 3 is a schematic structural diagram of the display panel 100 when the display panel 100 is bent outward, that is, when the display surface of the display panel 100 is bent outward.
Taking any two adjacent functional layers as an example when the display panel of the embodiment is bent and folded, whether the display panel 100 can be bent inward or outward, a schematic diagram of the two adjacent functional layers moving relative to each other is shown in fig. 4. For convenience of discussion, two adjacent functional layers are taken as an example of the support layer 120 and the light emitting layer 130, fig. 4 illustrates a case where the display panel 100 is bent outward, where the length of the display panel is L, and when the bending radius of the display panel is R, the bending radius of the support layer 120 is (R + t1), the central angle is θ 1, the bending radius of the light emitting layer 130 is (R + t1+ t0+ t2), and the central angle is θ 2, where t0 is a thickness of the elastic glue layer, and t1 and t2 are thicknesses of the support layer 120 and the light emitting layer 130, respectively.
At this time, a break at one end between the support layer 120 and the light emitting layer 130 is d, and there are:
for the display panel of the present invention, the total offset D between the uppermost functional layer of the side of the one end of the display panel 100 and the support layer 120 is the sum of the offsets between the functional layers. In an embodiment, the total offset D of the display panel is between 100 μm and 200 μm. As can be seen from fig. 2 and 3, when the display panel 100 is bent (inward or outward), the shape of the buffer layer 200 may be changed according to the difference between the functional layers, that is, the buffer layer 200 can accommodate the difference between the functional layers, and the buffer layer 200 can still be well supported at the side surfaces of both ends of the display panel 100 when the display panel 100 is bent. When the display panel returns to the unfolded planar state, the buffer layer 200 rebounds to the original shape, as shown in fig. 1.
In an embodiment, the buffer layer may be an ester material layer, and specifically, may be any one of a polyurethane layer, a polycarbonate layer, or a polycaprolactone layer. In one embodiment, the buffer layer is a foam layer, i.e., the buffer layer is a polyurethane layer.
The utility model discloses in, the side at display panel 100's both ends is provided with buffer layer 300 and locating part 200, and buffer layer 300 self-adaptation display panel 100 is disconnected poor between each functional layer when buckling, and simultaneously, locating part 200 has played the effect of fixed buffer layer 300 well, and buffer layer 300 and locating part 200 play the effect of the side of the display panel 100 that the protection can be buckled.
Empirically, when the total offset D of the display panel increases, the shore hardness of the buffer layer 300 needs to be decreased, i.e., the resilience of the buffer layer 300 needs to be increased. According to gradient division, when the total offset D is increased by 100 mu m, the Shore hardness is reduced by about 10, and the rebound resilience is increased by about 10%;
preferably, cushioning layer 300 is a cushioning layer having a shore hardness of between 60-90.
Preferably, the cushioning layer 300 is a cushioning layer having a resiliency of between 60% and 80%.
The buffer layer 300 has a thickness of 50.0 μm to 200.0 μm.
The buffer layer 300 within the above range can satisfy the requirement of deformation along with the difference between the functional layers, and can also play a role of limiting and supporting the side surface of the display panel 100.
To sum up, the utility model provides a foldable display device, include: the display panel comprises a plurality of functional layers, and the functional layers are bonded through elastic glue layers; when the display panel is bent, all the functional layers move relatively; the limiting pieces are arranged on the side faces of the two ends of the display panel; the buffer layer is arranged between the side faces at the two ends of the display panel and the limiting pieces. The foldable display device of the utility model bonds each functional layer through the elastic glue layer, so that each functional layer can move relatively, and the stress between each functional layer is reduced; simultaneously, guaranteed the stability of the side at display panel both ends when buckling through buffer layer and locating part, the utility model discloses a scheme reliability and stability when having improved collapsible display device and buckling to improve collapsible display device's performance and life-span.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. It is to be understood that the terms "lower" or "upper", "downward" or "upward" and the like are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures; the terms first, second, etc. are used to denote names, but not any particular order.
Claims (11)
1. A foldable display device, comprising:
the display panel comprises a plurality of functional layers, and the functional layers are bonded through elastic glue layers; when the display panel is bent, all the functional layers move relatively;
the limiting pieces are arranged on the side faces of the two ends of the display panel;
the buffer layer is arranged between the side faces at the two ends of the display panel and the limiting pieces.
2. The foldable display device of claim 1, wherein: the buffer layer is an ester material layer.
3. The foldable display device of claim 2, wherein: the buffer layer is a polyurethane layer, a polycarbonate layer or a polycaprolactone layer.
4. The foldable display device of claim 2, wherein: the buffer layer is a buffer layer with resilience of 60% -80%.
5. The foldable display device of claim 2, wherein: the buffer layer is a buffer layer with Shore hardness of 60-90.
6. The foldable display device of claim 1, wherein: the thickness of the buffer layer is between 50.0 and 200.0 μm.
7. The foldable display device of claim 1, wherein: the elastic adhesive layer is a dimethyl silica gel layer, a methyl vinyl silica gel layer or a methyl phenyl vinyl silica gel layer.
8. The foldable display device of claim 1, wherein: the thickness of the elastic glue layer is between 5.0 and 50.0 mu m.
9. The foldable display device of claim 1, wherein: the limiting piece is a resin piece.
10. The foldable display device of claim 1, wherein: the plurality of functional layers include a support layer and a light emitting layer.
11. The foldable display device of claim 10, wherein: the multilayer functional layer further comprises any one or more layers of a polarizing layer, a touch layer and a cover window layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436341.4U CN210627728U (en) | 2019-12-30 | 2019-12-30 | Foldable display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436341.4U CN210627728U (en) | 2019-12-30 | 2019-12-30 | Foldable display device |
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| CN210627728U true CN210627728U (en) | 2020-05-26 |
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| CN201922436341.4U Active CN210627728U (en) | 2019-12-30 | 2019-12-30 | Foldable display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724680A (en) * | 2020-06-09 | 2020-09-29 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel, preparation method thereof and flexible display device |
| CN111951683A (en) * | 2020-08-24 | 2020-11-17 | 京东方科技集团股份有限公司 | Display device |
| CN112185260A (en) * | 2020-10-13 | 2021-01-05 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112309254A (en) * | 2020-10-29 | 2021-02-02 | 合肥维信诺科技有限公司 | Flexible display device |
| CN112396964A (en) * | 2020-11-17 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| US11915623B2 (en) | 2020-06-09 | 2024-02-27 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible display panel, manufacturing method thereof, and flexible display device |
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2019
- 2019-12-30 CN CN201922436341.4U patent/CN210627728U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724680A (en) * | 2020-06-09 | 2020-09-29 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel, preparation method thereof and flexible display device |
| WO2021248541A1 (en) * | 2020-06-09 | 2021-12-16 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and manufacturing method thereof, and flexible display device |
| CN111724680B (en) * | 2020-06-09 | 2022-02-01 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel, preparation method thereof and flexible display device |
| US11915623B2 (en) | 2020-06-09 | 2024-02-27 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible display panel, manufacturing method thereof, and flexible display device |
| CN111951683A (en) * | 2020-08-24 | 2020-11-17 | 京东方科技集团股份有限公司 | Display device |
| CN112185260A (en) * | 2020-10-13 | 2021-01-05 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112185260B (en) * | 2020-10-13 | 2023-12-22 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112309254A (en) * | 2020-10-29 | 2021-02-02 | 合肥维信诺科技有限公司 | Flexible display device |
| CN112396964A (en) * | 2020-11-17 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| GR01 | Patent grant | ||
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Address after: 201506 No. nine, No. 1568 engineering road, Shanghai, Jinshan District Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201506 No. nine, No. 1568 engineering road, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 201506, No. nine, No. 1568, Jinshan Industrial Zone, Shanghai, Jinshan District Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201506 No. nine, No. 1568 engineering road, Shanghai, Jinshan District Patentee before: Shanghai Hehui optoelectronic Co., Ltd |
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