CN210925299U - Folding display device - Google Patents
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- CN210925299U CN210925299U CN202020298508.5U CN202020298508U CN210925299U CN 210925299 U CN210925299 U CN 210925299U CN 202020298508 U CN202020298508 U CN 202020298508U CN 210925299 U CN210925299 U CN 210925299U
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Abstract
The application provides a folding display device, includes: the flexible display panel comprises a supporting plate, a flexible display panel and a stress adjusting device; stress adjustment device includes a plurality of elastic connection spare, first elastic track and second elastic track, first elastic track is fixed to be set up in flexible display panel's upside edge, the second elastic track is fixed to be set up in flexible display panel's downside edge, a plurality of elastic connection spare are arranged along the length direction of elastic track subassembly in proper order, every elastic connection spare's one end is all fixed between first elastic track and second elastic track, every elastic connection spare's the other end is all fixed in the backup pad. In the folding display device that this application provided, have elastic stress adjusting device through the edge setting at flexible display panel, not only can let folding display device keep its flattening nature in flattening state and fold condition homoenergetic, can in time release the stress that flexible display panel edge was concentrated moreover, improved flexible display panel's life.
Description
Technical Field
The application relates to the technical field of display, in particular to a folding display device.
Background
With the continuous development of display technology, portable display devices such as mobile phones and tablet computers are visible everywhere in life. The large-area display device can improve the visual experience of a user, but is inconvenient to carry, so that the foldable display device is produced at the same time.
In the prior art, a foldable display device generally includes a flexible display panel and a housing, where the housing is used to support the flexible display panel for a folding-unfolding action and protect the flexible display panel during the folding-unfolding action, so as to prolong the service life of the flexible display panel.
However, the bent flexible display panel generates a certain stress, the stress concentration cannot be released, and irreversible damage such as warping, wrinkling, and protruding occurs, which not only causes adverse effect on the display effect of the foldable display device, but also causes the service life of the flexible display panel to decrease.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a foldable display device to solve the problem that the display effect and the service life of the conventional foldable display device are easily damaged in the folding process.
In order to solve the above technical problem, the utility model provides a pair of folding display device, folding display device includes: the flexible display panel comprises a supporting plate, a flexible display panel and a stress adjusting device;
the supporting plate is arranged on one side of the flexible display panel, and the stress adjusting device is arranged at the edge position of the flexible display panel;
stress adjustment device includes elasticity track subassembly and a plurality of elastic connection spare, the elasticity track subassembly is including relative first elasticity track and the second elasticity track that sets up, first elasticity track is fixed set up in flexible display panel's upside edge, second elasticity track is fixed set up in flexible display panel's downside edge, a plurality of elastic connection spare intervals set up and along the length direction of elasticity track subassembly arranges in proper order, and every elastic connection spare's one end is all fixed first elasticity track with between the second elasticity track, every elastic connection spare's the other end is all fixed in on the backup pad.
Optionally, in the foldable display device, the stress adjustment device is disposed on a side of the support plate facing the flexible display panel.
Optionally, in the foldable display device, the stress adjustment device is disposed on a side of the support plate opposite to the flexible display panel.
Optionally, in the foldable display device, the flexible display panel has a bending axis, the support plate and the flexible display panel are both bendable around the bending axis, and the stress adjustment device is disposed on two opposite sides of the bending axis.
Optionally, in the folding display device, the elastic connection member is a spring, one end of the spring is fixed between the first elastic crawler and the second elastic crawler through a first screw, and the other end of the spring is fixed on the support plate through a second screw.
Optionally, in the foldable display device, the elastic modulus of each of the first elastic track and the second elastic track is smaller than the elastic modulus of the elastic connecting piece.
Optionally, in the folding display device, the method further includes: a cover window, a first adhesive layer, and a second adhesive layer;
the cover window is arranged on one side, back to the support plate, of the flexible display panel, the first bonding layer is arranged between the cover window and the flexible display panel, and the second bonding layer is arranged between the support plate and the flexible display panel.
Optionally, in the folding display device, the method further includes: and the supplementary flat layer and the second bonding layer are arranged on the same layer and surround the second bonding layer.
Optionally, in the foldable display device, the supplementary flat layer and the second adhesive layer have the same thickness, a side of the supplementary flat layer facing the support plate has adhesiveness, and a side of the supplementary flat layer facing away from the support plate has no adhesiveness.
Optionally, in the foldable display device, when the foldable display device is in a flat state, the elastic connection member is in a pre-tightening state, and the pre-tightening force of the elastic connection member enables the flexible display panel to maintain its flat property;
when the folding display device is in a folding state, the elastic connecting piece is in a stretching state, and the stretching stress of the elastic connecting piece is larger than the pretightening force.
The utility model provides an among the folding display device, have elastic stress adjusting device through the edge setting at flexible display panel, not only can let folding display device can keep its exhibition nature at exhibition state and fold condition homoenergetic, can in time release moreover the stress that flexible display panel edge was concentrated has improved flexible display panel's life.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a cross-sectional view of a foldable display device according to a first embodiment of the present invention;
fig. 2 is a top view of a foldable display device according to a first embodiment of the present invention;
FIG. 3 is an exploded view of region M of FIG. 2;
fig. 4 shows a schematic structural view of an elastic connector according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first foldable display device according to an embodiment of the present invention in a folded state;
fig. 6 is a schematic structural diagram of a foldable display device according to a second embodiment of the present invention;
fig. 7 shows a schematic structural diagram of a third foldable display device according to the present invention.
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 embodiments 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 same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
[ EXAMPLES one ]
Please refer to fig. 1 and fig. 2, which are schematic structural diagrams of a foldable display device according to a first embodiment of the present invention. As shown in fig. 1 and 2, the folding display device 10 includes: the flexible display panel comprises a supporting plate 1, a flexible display panel 2 and a stress adjusting device; the supporting plate 1 is arranged on one side of the flexible display panel 2, and the stress adjusting device is arranged at the edge position of the flexible display panel 2; stress adjustment device includes elasticity track subassembly and a plurality of elastic connection spare 5, the elasticity track subassembly is including relative first elasticity track 4a and the second elasticity track 4b that sets up, first elasticity track 4a is fixed set up in flexible display panel 2's upside edge, second elasticity track 4b is fixed set up in flexible display panel 2's downside edge, a plurality of elastic connection spare 5 intervals set up and along the length direction of elasticity track subassembly arranges in proper order, and the one end of every elastic connection spare 5 is all fixed first elasticity track 4a with between the second elasticity track 4b, the other end of every elastic connection spare 5 is all fixed in backup pad 1 is last.
Specifically, the flexible display panel 2 has two surfaces which are oppositely arranged, one of the surfaces is a light emitting surface, and the supporting plate 1 is located on one side of the flexible display panel 2 which is away from the light emitting surface and is used for supporting the flexible display panel 2 to perform folding-unfolding actions.
The edge of the flexible display panel 2 is provided with a stress adjusting device, the stress adjusting device comprises a first elastic crawler 4a, a second elastic crawler 4b and a plurality of elastic connecting pieces 5, the first elastic crawler 4a and the second elastic crawler 4b are both made of elastic bodies, and the lengths of the first elastic crawler 4a and the second elastic crawler 4b are set according to the length of the edge of the flexible display panel 2. The first elastic crawler 4a is disposed at an upper side edge of the flexible display panel 2, and is fixedly connected to the upper side edge of the flexible display panel 2 by adhesion. The second elastic crawler 4b is disposed at the lower edge of the flexible display panel 2, and is fixedly connected to the upper edge of the flexible display panel 2 by adhesion. One ends of the plurality of elastic connecting pieces 5 are fixed between the first elastic crawler 4a and the second elastic crawler 4b, and the other ends of the plurality of elastic connecting pieces 5 are fixed on the support plate 1.
Please refer to fig. 3, which is an exploded view of the region M in fig. 2. As shown in fig. 3, one end of the elastic link 5 is fixed to the second elastic crawler 4b by a first screw 6a, and the other end of the elastic link 5 is fixed to the support plate 1 by a second screw 6 b.
In this embodiment, the first elastic crawler 4a and the second elastic crawler 4b are both planar strip structures and are opposite in position, the length direction of the elastic crawler assembly is consistent with the length direction of the planar strip structures, and the plurality of elastic connecting members 5 are arranged at intervals and are sequentially arranged along the length direction of the planar strip structures.
Preferably, the lengths of the first and second elastic crawlers 4a and 4b are identical to the length of the edge of the flexible display panel 2, and the plurality of elastic links 5 are uniformly arranged between the first and second elastic crawlers 4a and 4 b.
In this embodiment, the elastic modulus of the elastic connecting member 5 is required to be similar to the elastic modulus of the first elastic crawler 4a and the second elastic crawler 4 b. Preferably, the modulus of elasticity of the first elastic track 4a and the second elastic track 4b is slightly smaller than the modulus of elasticity of the elastic joint 5.
In this embodiment, the elastic connecting member 5 is a spring. The spring can be made of stainless steel wires, piano steel wires, beryllium copper wires or other materials with elasticity. The first elastic crawler 4a and the second elastic crawler 4b are made of polytetrafluoroethylene dispersed resin, acryl-based resin natural latex, or other materials having an elastic modulus close to that of a spring.
In this embodiment, the first elastic crawler 4a and the second elastic crawler 4b are made of the same material. In other embodiments, the first elastic track 4a and the second elastic track 4b may be made of different materials, as long as the materials have elasticity and a slightly smaller elastic modulus than the elastic connecting member 5.
In this embodiment, the first elastic crawler 4a and the second elastic crawler 4b have the same outer dimensions and are opposite to each other. In other embodiments, the first elastic crawler 4a and the second elastic crawler 4b may have different outer dimensions and may not be disposed opposite to each other, as long as the elastic crawler assembly formed by the first elastic crawler 4a and the second elastic crawler 4b can connect the elastic connecting member 5 (i.e., a spring), and can prevent the elastic connecting member 5 (i.e., the spring) and the fixing structure thereof from damaging the flexible display panel 2.
Preferably, the fixing part of the elastic connecting piece 5 is provided with adhesive colloid to further reinforce.
Please refer to fig. 4, which is a schematic structural diagram of an elastic connecting member according to an embodiment of the present invention. As shown in fig. 4, two ends of the elastic connecting member 5 (i.e., the spring) are ring-shaped hook structures, the ring-shaped hook structures can prevent the spring from falling off during the folding-unfolding process, and the size of the spring is set according to the thickness of the flexible display panel 2. In this embodiment, the wire diameter D1 of the spring is less than 100 μm, and the outer diameter D2 of the spring is less than 150 μm.
In other embodiments, the two ends of the spring may be flat and profiled or have other structures, as long as the spring can be reliably fixed between the elastic track assembly and the supporting plate 1, and the size of the spring can meet the thickness requirement of the flexible display panel 2.
With continued reference to fig. 1, the foldable display device 10 further includes: the cover window 3 is located on one side, facing the light emitting surface, of the flexible display panel 2 and used for protecting the flexible display panel 2, and the cover window 3 is a transparent sheet and can transmit light emitted by the flexible display panel 2.
Referring to fig. 1 and fig. 5, the flexible display panel 2 has a bending axis F, and the supporting plate 1, the flexible display panel 2 and the cover window 3 are all bendable around the bending axis F, and the edge of the flexible display panel 2 is substantially unstressed in the flat state, and the edge of the flexible display panel 2 is more stressed in the bent state. And irreversible damage such as warping, wrinkling, bulging, etc. may occur due to excessive stress concentration, for which the edges of the folded display device 10 are provided with stress adjustment means.
With continued reference to fig. 1 to fig. 3, an elastic connecting member 5 (i.e., a spring) in the stress adjustment device is connected to the flexible display panel 2 through the second elastic track 4b, when the foldable display device 10 is in the flat configuration, the spring is in a pre-tensioned state (i.e., a slightly stretched state, having a pre-tensioned force), the pre-tensioned force of the spring enables the flexible display panel 2 to maintain its flat configuration, when the foldable display device 10 is in the folded configuration, the spring is in a stretched state (having a tensile stress, the tensile stress is greater than the pre-tensioned force), and the tensile stress of the spring can disperse the bending stress of the flexible display panel 2, and at the same time, the flexible display panel 2 maintains its flat configuration.
Thus, the stress generated during the flat-folding process of the foldable display device 10 can be released by the elastic connection 5 (i.e., the spring), and at the same time, since the first and second elastic tracks 4a and 4b of the stress adjustment device also have a certain elasticity, the stress can be further released based on the function of the spring.
In addition, because the light emitting surface and the back of the flexible display panel 2 are attached with the elastic crawler (i.e. the first elastic crawler 4a and the second elastic crawler 4b), the end of the elastic connecting piece 5 close to the flexible display panel 2 is arranged between the first elastic crawler 4a and the second elastic crawler 4b, so that the damage to the flexible display panel 2 caused by the elastic connecting piece 5 (i.e. the spring) directly fixed on the flexible display panel 2 can be avoided.
Referring to fig. 2, the stress adjustment devices provided in this embodiment are disposed on two opposite sides of the bending axis F, that is, the stress on the flexible display panel 2 can be released by the stress adjustment devices on the left and right sides.
With continued reference to fig. 1, the foldable display device 10 further includes: the display device comprises a first bonding layer 7a, a second bonding layer 7b and a supplementary flat layer 8, wherein the first bonding layer 7a is arranged between the flexible display panel 2 and the cover window 3 and used for fixedly connecting the flexible display panel 2 and the cover window 3, the second bonding layer 7b is arranged between the flexible display panel 2 and the support plate 1 and used for fixedly connecting the flexible display panel 2 and the support plate 1, and the supplementary flat layer and the second bonding layer 7b are arranged on the same layer and surround the second bonding layer 7b and are used for supporting the flexible display panel 2.
In this embodiment, the first adhesive layer 7a and the second adhesive layer 7b are both made of OCA optical cement, and the supplemental flat layer 8 is made of UV optical cement or polydimethylsiloxane (abbreviated as PDMS).
In this embodiment, the side of the supplemental flat layer 8 facing away from the support plate 1 has no adhesive property, and the side of the supplemental flat layer 8 facing the support plate 1 has adhesive property. Preferably, the thickness of the supplemental planarization layer 8 is the same as the thickness of the second adhesive layer 7 b.
In this embodiment, the flexible display panel 2 includes a flexible substrate and a functional film layer disposed on the flexible substrate, the functional film layer includes an integrated circuit layer and a light emitting device layer, and the light emitting device layer is disposed corresponding to the integrated circuit layer and electrically connected to the integrated circuit layer. The functional film layer is arranged according to the display requirement, and can comprise other film layers such as a touch layer, a polarizing plate, a heat dissipation layer and the like besides the integrated circuit layer and the light-emitting device layer.
[ example two ]
Please refer to fig. 6, which is a schematic structural diagram of a foldable display device according to a second embodiment of the present invention. As shown in fig. 6, the folding display device 20 includes: the flexible display panel comprises a supporting plate 1, a flexible display panel 2 and a stress adjusting device; the supporting plate 1 is arranged on one side of the flexible display panel 2, and the stress adjusting device is arranged at the edge position of the flexible display panel 2; stress adjustment device includes elasticity track subassembly and a plurality of elastic connection spare 5, the elasticity track subassembly is including relative first elasticity track 4a and the second elasticity track 4b that sets up, first elasticity track 4a is fixed set up in flexible display panel 2's upside edge, second elasticity track 4b is fixed set up in flexible display panel 2's downside edge, a plurality of elastic connection spare 5 intervals set up and along the length direction of elasticity track subassembly arranges in proper order, and the one end of every elastic connection spare 5 is all fixed first elasticity track 4a with between the second elasticity track 4b, the other end of every elastic connection spare 5 is all fixed in backup pad 1 is last.
The difference between this embodiment and the first embodiment is that the position of the stress adjustment device is different. In the foldable display device 20 provided in this embodiment, the stress adjusting device is disposed at a lower portion of the supporting board 1 facing away from the light emitting direction of the flexible display panel 2, that is, at a side of the supporting board 1 facing away from the flexible display panel 2. In the first embodiment, the stress adjusting device is disposed on a side of the supporting plate 1 facing the flexible display panel 2.
[ EXAMPLE III ]
Please refer to fig. 7, which is a schematic structural diagram of a foldable display device according to a third embodiment of the present invention. As shown in fig. 7, the folding display device 30 includes: the flexible display panel comprises a supporting plate 1, a flexible display panel 2 and a stress adjusting device; the supporting plate 1 is arranged on one side of the flexible display panel 2, and the stress adjusting device is arranged at the edge position of the flexible display panel 2; stress adjustment device includes elasticity track subassembly and a plurality of elastic connection spare 5, the elasticity track subassembly is including relative first elasticity track 4a and the second elasticity track 4b that sets up, first elasticity track 4a is fixed set up in flexible display panel 2's upside edge, second elasticity track 4b is fixed set up in flexible display panel 2's downside edge, a plurality of elastic connection spare 5 intervals set up and along the length direction of elasticity track subassembly arranges in proper order, and the one end of every elastic connection spare 5 is all fixed first elasticity track 4a with between the second elasticity track 4b, the other end of every elastic connection spare 5 is all fixed in backup pad 1 is last.
The present embodiment differs from the second embodiment in that the dimensions of the elastic crawler are different. In the foldable display device 30 of the present embodiment, the first and second elastic tracks 4a and 4b have a larger width to completely wrap the elastic connection member 5. In the first and second embodiments, the first and second elastic tracks 4a and 4b do not completely wrap the elastic connection member 5.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
The above figures only schematically illustrate the foldable display device provided by the present invention. For the sake of clarity, the shapes of the elements and the number of the elements in the above figures are simplified and some elements are omitted, so that those skilled in the art can make changes according to actual needs, and the changes are all within the protection scope of the present invention and will not be described herein.
To sum up, the utility model provides a folding display device has elastic stress adjusting device through the edge setting at flexible display panel, not only can let folding display device can keep its exhibition nature in exhibition state and fold condition homoenergetic, can in time release moreover the stress that flexible display panel edge was concentrated has improved flexible display panel's life.
The foregoing is a more detailed description of the present application in connection with specific preferred embodiments and it is not intended that the present application be limited to these specific details. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A foldable display device, comprising: the flexible display panel comprises a supporting plate, a flexible display panel and a stress adjusting device;
the supporting plate is arranged on one side of the flexible display panel, and the stress adjusting device is arranged at the edge position of the flexible display panel;
stress adjustment device includes elasticity track subassembly and a plurality of elastic connection spare, the elasticity track subassembly is including relative first elasticity track and the second elasticity track that sets up, first elasticity track is fixed set up in flexible display panel's upside edge, second elasticity track is fixed set up in flexible display panel's downside edge, a plurality of elastic connection spare intervals set up and along the length direction of elasticity track subassembly arranges in proper order, and every elastic connection spare's one end is all fixed first elasticity track with between the second elasticity track, every elastic connection spare's the other end is all fixed in on the backup pad.
2. The foldable display device of claim 1, wherein the stress adjustment device is disposed on a side of the support plate facing the flexible display panel.
3. The foldable display device of claim 1, wherein the stress adjustment device is disposed on a side of the support plate facing away from the flexible display panel.
4. A foldable display device according to claim 2 or 3, wherein the flexible display panel has a bending axis, the support plate and the flexible display panel are both bendable around the bending axis, and the stress adjustment means are arranged on opposite sides of the bending axis.
5. The folding display apparatus of claim 1, wherein said elastic connection member is a spring, one end of said spring is fixed between said first elastic track and said second elastic track by a first screw, and the other end of said spring is fixed on said supporting plate by a second screw.
6. The folding display device of claim 1, wherein the modulus of elasticity of each of said first and second elastic tracks is less than the modulus of elasticity of said elastic attachment.
7. The folding display device of claim 1, further comprising: a cover window, a first adhesive layer, and a second adhesive layer;
the cover window is arranged on one side, back to the support plate, of the flexible display panel, the first bonding layer is arranged between the cover window and the flexible display panel, and the second bonding layer is arranged between the support plate and the flexible display panel.
8. The folding display device of claim 7, further comprising: and the supplementary flat layer and the second bonding layer are arranged on the same layer and surround the second bonding layer.
9. The foldable display device of claim 8, wherein the supplemental flat layer is the same thickness as the second adhesive layer, a side of the supplemental flat layer facing the support plate is adhesive, and a side of the supplemental flat layer facing away from the support plate is non-adhesive.
10. The foldable display device of claim 1, wherein the elastic connector is under a pre-tension state when the foldable display device is in a flat state, and the pre-tension of the elastic connector keeps the flexible display panel in its flat state;
when the folding display device is in a folding state, the elastic connecting piece is in a stretching state, and the stretching stress of the elastic connecting piece is larger than the pretightening force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298508.5U CN210925299U (en) | 2020-03-11 | 2020-03-11 | Folding display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298508.5U CN210925299U (en) | 2020-03-11 | 2020-03-11 | Folding display device |
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| CN210925299U true CN210925299U (en) | 2020-07-03 |
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| CN202020298508.5U Active CN210925299U (en) | 2020-03-11 | 2020-03-11 | Folding display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509465A (en) * | 2020-11-23 | 2021-03-16 | 京东方科技集团股份有限公司 | Folding display device and electronic equipment |
| CN113674629A (en) * | 2021-09-07 | 2021-11-19 | 武汉华星光电半导体显示技术有限公司 | Display device |
| WO2022041404A1 (en) * | 2020-08-31 | 2022-03-03 | 武汉华星光电半导体显示技术有限公司 | Foldable display screen |
| US20230038699A1 (en) * | 2021-08-09 | 2023-02-09 | Samsung Display Co., Ltd. | Panel flattening assembly and display module including the same |
-
2020
- 2020-03-11 CN CN202020298508.5U patent/CN210925299U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041404A1 (en) * | 2020-08-31 | 2022-03-03 | 武汉华星光电半导体显示技术有限公司 | Foldable display screen |
| CN112509465A (en) * | 2020-11-23 | 2021-03-16 | 京东方科技集团股份有限公司 | Folding display device and electronic equipment |
| US20230038699A1 (en) * | 2021-08-09 | 2023-02-09 | Samsung Display Co., Ltd. | Panel flattening assembly and display module including the same |
| US11878332B2 (en) * | 2021-08-09 | 2024-01-23 | Samsung Display Co., Ltd. | Panel flattening assembly and display module including the same |
| CN113674629A (en) * | 2021-09-07 | 2021-11-19 | 武汉华星光电半导体显示技术有限公司 | Display device |
| WO2023035405A1 (en) * | 2021-09-07 | 2023-03-16 | 武汉华星光电半导体显示技术有限公司 | Display device |
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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: EverDisplay Optronics (Shanghai) Ltd. |