CN211743160U - Foldable display device - Google Patents
Foldable display device Download PDFInfo
- Publication number
- CN211743160U CN211743160U CN202020298144.0U CN202020298144U CN211743160U CN 211743160 U CN211743160 U CN 211743160U CN 202020298144 U CN202020298144 U CN 202020298144U CN 211743160 U CN211743160 U CN 211743160U
- Authority
- CN
- China
- Prior art keywords
- display device
- wire
- bending
- layer
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model provides a foldable display device, include: a flexible display panel including two non-bending display regions and a bending display region between the two non-bending display regions; the supporting film layer is arranged on one side of the flexible display panel, which is far away from the display surface, and comprises two first supporting film layer parts opposite to the non-bending display area and a second supporting film layer part opposite to the bending display area; the first supporting film layer part is provided with a memory spring. The utility model discloses a display device's support rete, its part relative with the display area of non-buckling is provided with memory spring, when display device buckles, supports the rete and can deform at certain within range to release its and the flexible display panel's on it stress, reduce the damage of the process stress of buckling repeatedly to flexible display panel, make support the rete and play the effect of supporting and protecting flexible display panel simultaneously, improved collapsible display device's display 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
Organic Light Emitting Diodes (OLEDs) have the advantages of self-luminescence, lightness, thinness, foldability, wide color gamut, and high contrast, and have attracted much attention in the field of applications such as display and lighting. With the increasing development of flexible display technology, flexible OLED display screens are getting more and more attention. Compared with a conventional display screen, the flexible OLED display screen has great freedom in appearance design, portability of the display device is improved, and meanwhile the use scene of the display device is expanded.
However, the flexible OLED display panel is thin. Therefore, the overall strength is low, when the mobile phone is carried on a foldable mobile phone, a user can perform operations such as touch and pressing on the OLED display screen in the using process, and a support made of hard materials is required to be arranged below the flexible OLED display screen to support the flexible OLED display screen. However, the problems that the supporting effect is limited due to insufficient hardness of the supporting film, or the supporting film is deformed and falls off when subjected to stress and the like in the repeated bending process, the supporting force is insufficient and the like occur, all the problems affect the display effect of the flexible OLED display screen, and how to enhance the protection and supporting effect of the supporting film is an urgent problem to be solved in the field of flexible OLED display.
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
To the problem among the prior art, an object of the utility model is to provide a collapsible display device sets up memory spring through the relative part of the non-display area of buckling at its support rete, buckles the display area and is provided with the stereoplasm layer in relative part for support rete plays the effect of supporting and protection flexible display panel simultaneously, has improved collapsible display device's display performance and life-span.
An embodiment of the utility model provides a foldable display device, include:
a flexible display panel including two non-bending display regions and a bending display region between the two non-bending display regions;
the supporting film layer is arranged on one side of the flexible display panel, which is far away from the display surface, and comprises two first supporting film layer parts opposite to the non-bending display area and a second supporting film layer part opposite to the bending display area;
the first supporting film layer part is provided with a memory spring along the bending direction.
According to an example of the present invention, the supporting film layer comprises one or more layers of polyethylene terephthalate film, polyimide film, polyethylene naphthalate film, polyethersulfone resin film or polycarbonate film, and the thickness of the supporting film layer is between 5 μm and 200 μm
According to an example of the present invention, the memory spring is made of a memory alloy wire.
According to an example of the present invention, the memory alloy wire is a manganese steel wire, an Ag-Cd wire, a Cu-Cn wire, a Cu-Sn wire, a Fe-Pt wire, a Cu-Zn-Al wire, a Ti-Ni wire or a Fe-Mn-Sn wire.
According to an example of the present invention, the diameter of the memory alloy wire is between 1 μm and 150 μm.
According to an example of the present invention, the memory spring wound is regular wave, irregular wave, regular zigzag or irregular zigzag.
According to an example of the present invention, a groove is disposed on a side of the second supporting film layer portion away from the display surface;
the display device further comprises a hard layer, wherein the hard layer is arranged in the groove, and the width of the hard layer in the bending direction is smaller than that of the groove.
According to an example of the present invention, the display device further includes two buffers, two the buffers respectively set up in both ends of the groove.
According to an example of the present invention, the hard layer is a glass layer, a metal layer, an invar (Inva) alloy layer, a polyethylene terephthalate film, a polyimide film, a polyethylene naphthalate film, a polyethersulfone resin film, or a polycarbonate film.
According to an example of the present invention, the thickness of the hard layer is between 5 μm and 200 μm.
The utility model discloses a support rete of display device, its part relative with non-bending display region is provided with memory spring, increases the supporting role of supporting the rete, and when display device buckled simultaneously, the support rete played and released its and the flexible display panel's on it stress, reduced the damage of repeated bending process stress to flexible display panel; in addition, support the rete and be provided with the stereoplasm layer with the display area that buckles in relative part, be the support rete here to the regional protection and the supporting role of playing of buckling, the utility model discloses a support the rete and take place to warp, drop when having solved effects such as stress, support the rete and not enough scheduling problem of holding power, improved collapsible display device's demonstration 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 is a schematic structural diagram 2 of the foldable display device according to an embodiment of the present invention when being bent.
Reference numerals
100 flexible display panel
110 non-bending display area
120 bending display area
200 support film layer
210 memory spring
220 hard layer
230 buffer
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 foldable display device includes:
a flexible display panel 100, the flexible display panel 100 comprising two non-bending display areas 110 and a bending display area 120 between the two non-bending display areas 110; the flexible display panel 100 may include a plurality of functional layers, such as a light emitting layer, a polarizing layer, a touch layer, and the like, which are not limited herein. In fig. 1, the non-bending display region 110 and the bending display region 120 are schematically divided by a dotted line, and in an actual foldable display device, there is an excessive region between the two regions, which is not clear as in fig. 1.
The support film layer 200 is disposed on a side of the flexible display panel 100 facing away from the display surface, the support film layer 200 is used to prevent the flexible display panel 100 from deforming, and the support film layer 200 may be made of a flexible substrate material such as a polyethylene terephthalate (PET), a Polyimide (PI), a polyethylene naphthalate (PBN), a Polyethersulfone (PES), or a Polycarbonate (PC), in which in an embodiment, the support film layer 200 may be a single-layer structure of the above materials, or may be a multi-layer structure of the above materials, and preferably, the support film layer 100 has a thickness of 5 μm to 200 μm.
The support film 200 of the present invention includes two first support film portions opposite to the non-bending display region 110 and a second support film portion opposite to the bending display region 120; the first supporting film layer portion is provided with a memory spring 210 along a bending direction, which is indicated by an arrow in fig. 1. The memory spring 210 is made of a memory alloy wire. The memory alloy wire is a manganese steel wire, an Ag-Cd wire, a Cu-Cn wire, a Cu-Sn wire, an Fe-Pt wire, a Cu-Zn-Al wire, a Ti-Ni wire or an Fe-Mn-Sn wire and the like, and the memory spring wound by the memory alloy wire can be in a regular square tooth wave shape, and can also be in a regular wave shape, an irregular wave shape, a regular sawtooth shape or an irregular sawtooth shape. The diameter of the memory alloy wire can be between 1 μm and 150 μm. The memory spring 210 is disposed on the first supporting film layer portion, so that the supporting performance of the supporting film layer can be effectively improved, and the flatness of the flexible display panel during use can be ensured.
Fig. 2 is a schematic structural diagram of the foldable display device according to an embodiment of the present invention when being bent. It is defined herein that the display surface of the foldable display device is outwardly bent when being bent, and the display surface of the foldable display device is inwardly bent when being bent, and fig. 2 is a schematic structural diagram of the foldable display device being inwardly bent. When the display device is bent inward, two ends of the second supporting film layer opposite to the bent display area 120 are stressed to cause one end of the two first supporting film layer connected to the second supporting film layer to be stretched, and the memory spring 210 of the first supporting film layer is stretched, so that the first supporting film layer is deformed to reduce stress generated due to bending, and damage of the supporting film layer or the flexible display panel thereon caused by the stress is reduced. When the display device is bent inwards and returns to the unfolding state, the memory spring returns to the state before deformation through the recovery memory function of the memory spring, and the first supporting film layer returns to the state before deformation.
On the contrary, when the display device is bent outward (not shown), the second supporting film portion opposite to the bent display area 120 is stressed to cause a compressive force on one end of the two first supporting film portions connected thereto, and the memory spring 210 of the first supporting film portion is compressed, so that the first supporting film portion is deformed to reduce the stress generated by bending, and reduce the damage of the supporting film layer or the flexible display panel thereon caused by the stress. When the display device is bent outwards and returns to the unfolded state, the memory spring returns to the state before deformation through the recovery memory function of the memory spring, and the first supporting film layer returns to the state before deformation.
In the bending region 120 of the flexible display panel, in order to enhance the protection and support effect of the supporting film layer, in an embodiment of the present invention, a groove is disposed on a side of the second supporting film layer portion away from the display surface; a hard layer 220 is disposed in the groove, and the width of the hard layer 220 along the bending direction is smaller than the width of the groove.
According to an example of the present invention, the hard layer 220 is a glass layer, a metal layer, an invar (Inva) alloy layer, a polyethylene terephthalate film, a polyimide film, a polyethylene naphthalate film, a polyethersulfone resin film, or a polycarbonate film. The utility model discloses in, the rigidity intensity on stereoplasm layer is greater than the rigidity intensity that supports rete 200, make it both can buckle and have certain intensity, consequently, immediately in an embodiment, stereoplasm layer 220 all adopts the polyethylene terephthalate membrane with support rete 200, all adopt the polyimide film, all adopt the polyethylene naphthalate membrane, all adopt the polyethersulfone membrane or all adopt the polycarbonate membrane when, wherein, directly decide the elastic polyethylene terephthalate of material, polyimide, polyethylene naphthalate, the chain structure of polyethersulfone or polycarbonate, molecular weight etc. also inequality. The hard layer 220 may be optically bonded to the support film layer at the groove, and the thickness of the hard layer 220 may be between 5 μm and 200 μm.
In some embodiments, the buffer members 230 are respectively disposed between the two ends of the groove and the hard layer 220, the buffer members 230 may be made of a material having an elastic buffering function, preferably, the buffer members 230 are made of a photosensitive adhesive, which has the advantages of simple curing equipment, high curing speed, and the like, and is a conventional reagent in an OLED manufacturing process, the cured photosensitive adhesive is an elastic adhesive, the buffer members 230 play a role in buffering the two ends of the hard layer 220 and the groove when the display device is bent and unfolded, so that a supporting effect of the second supporting film layer part on the bending region 120 is enhanced, a probability that the bending region 120 generates a crease due to bending is reduced, and the experience of a user in a using process is improved while the service life of the foldable display device is prolonged.
The utility model discloses a collapsible display device can be cell-phone, panel computer, TV set, display, notebook computer, digital photo holder frame, media player, wrist-watch device, pendant device, earphone or earphone device, navigation head, wearable or micro-device, have electronic equipment of display install in self-service terminal or car any product or part that have the display function such as the embedded device of system.
To sum up, the supporting film layer of the display device of the present invention, the portion of which opposite to the non-bending display area is provided with the memory spring, so as to increase the supporting effect of the supporting film layer, and meanwhile, when the display device is bent, the supporting film layer plays a role of releasing the stress of the display device and the flexible display panel thereon, so as to reduce the damage of the stress to the flexible display panel in the repeated bending process; in addition, support the rete and be provided with the stereoplasm layer with the display area that buckles in relative part, be the support rete here to the regional protection and the supporting role of playing of buckling, the utility model discloses a support the rete and take place to warp, drop when having solved effects such as stress, support the rete and not enough scheduling problem of holding power, improved collapsible display device's demonstration 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 (10)
1. A foldable display device, comprising:
a flexible display panel including two non-bending display regions and a bending display region between the two non-bending display regions;
the supporting film layer is arranged on one side of the flexible display panel, which is far away from the display surface, and comprises two first supporting film layer parts opposite to the non-bending display area and a second supporting film layer part opposite to the bending display area;
the first supporting film layer part is provided with a memory spring along the bending direction.
2. The foldable display device of claim 1, wherein: the support film layer comprises one or more layers of polyethylene terephthalate film, polyimide film, polyethylene naphthalate film, polyether sulfone resin film or polycarbonate film, and the thickness of the support film layer is 5-200 mu m.
3. The foldable display device of claim 1, wherein: the memory spring is made of a memory alloy wire by winding.
4. The foldable display device of claim 3, wherein: the memory alloy wire is a manganese steel wire, an Ag-Cd wire, a Cu-Cn wire, a Cu-Sn wire, an Fe-Pt wire, a Cu-Zn-Al wire, a Ti-Ni wire or an Fe-Mn-Sn wire.
5. The foldable display device of claim 3, wherein: the diameter of the memory alloy wire is between 1 and 150 mu m.
6. The foldable display device of claim 3, wherein: the wound memory spring is in a regular wave shape, an irregular wave shape, a regular sawtooth shape or an irregular sawtooth shape.
7. The foldable display device of claim 1, wherein: a groove is formed in one side, away from the display surface, of the second supporting film layer part;
the display device further comprises a hard layer, wherein the hard layer is arranged in the groove, and the width of the hard layer in the bending direction is smaller than that of the groove.
8. The foldable display device of claim 7, wherein: the display device further comprises two buffer parts, and the two buffer parts are respectively arranged at two ends of the groove.
9. The foldable display device of claim 7, wherein: the hard layer is a glass layer, a metal layer, an invar alloy layer, a polyethylene terephthalate film, a polyimide film, a polyethylene naphthalate film, a polyethersulfone resin film or a polycarbonate film.
10. The foldable display device of claim 7, wherein: the thickness of the hard layer is between 5 and 200 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298144.0U CN211743160U (en) | 2020-03-11 | 2020-03-11 | Foldable display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020298144.0U CN211743160U (en) | 2020-03-11 | 2020-03-11 | Foldable display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211743160U true CN211743160U (en) | 2020-10-23 |
Family
ID=72858698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020298144.0U Active CN211743160U (en) | 2020-03-11 | 2020-03-11 | Foldable display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211743160U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112991959A (en) * | 2021-03-31 | 2021-06-18 | 上海天马微电子有限公司 | Foldable display module, manufacturing method thereof and foldable display device |
| CN113012578A (en) * | 2021-03-04 | 2021-06-22 | 京东方科技集团股份有限公司 | Folding screen and display device |
| CN114283688A (en) * | 2021-12-30 | 2022-04-05 | 昆山工研院新型平板显示技术中心有限公司 | Display module and display device |
| CN114724465A (en) * | 2022-04-12 | 2022-07-08 | 武汉天马微电子有限公司 | Display screen and display device |
| CN115691335A (en) * | 2022-11-02 | 2023-02-03 | 苏州恒悦新材料有限公司 | OLED supports membrane based on flexible screen body |
-
2020
- 2020-03-11 CN CN202020298144.0U patent/CN211743160U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012578A (en) * | 2021-03-04 | 2021-06-22 | 京东方科技集团股份有限公司 | Folding screen and display device |
| US11947393B2 (en) | 2021-03-04 | 2024-04-02 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Foldable screen and display device |
| CN112991959A (en) * | 2021-03-31 | 2021-06-18 | 上海天马微电子有限公司 | Foldable display module, manufacturing method thereof and foldable display device |
| CN112991959B (en) * | 2021-03-31 | 2023-09-29 | 上海天马微电子有限公司 | Foldable display module, manufacturing method thereof and foldable display device |
| CN114283688A (en) * | 2021-12-30 | 2022-04-05 | 昆山工研院新型平板显示技术中心有限公司 | Display module and display device |
| CN114283688B (en) * | 2021-12-30 | 2024-05-14 | 昆山工研院新型平板显示技术中心有限公司 | Display assembly and display device |
| CN114724465A (en) * | 2022-04-12 | 2022-07-08 | 武汉天马微电子有限公司 | Display screen and display device |
| CN115691335A (en) * | 2022-11-02 | 2023-02-03 | 苏州恒悦新材料有限公司 | OLED supports membrane based on flexible screen body |
| CN115691335B (en) * | 2022-11-02 | 2024-02-13 | 苏州恒悦新材料股份有限公司 | OLED support film based on flexible screen body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211743160U (en) | Foldable display device | |
| CN110853525B (en) | Folding screen assembly and electronic equipment | |
| CN210627728U (en) | Foldable display device | |
| US20240157669A1 (en) | Display module and display apparatus | |
| CN211062371U (en) | Foldable display device | |
| CN110992837A (en) | Flexible display panel assembly and flexible display device | |
| JP2023511896A (en) | Display modules and electronic devices | |
| CN110570772A (en) | Flexible display device and preparation method thereof | |
| US11822384B2 (en) | Display device | |
| CN113140155B (en) | Electronic device | |
| WO2002091161A1 (en) | Touch panel and electronic apparatus using the same | |
| CN111584714A (en) | OLED display structure preparation method and OLED display structure | |
| US20230040918A1 (en) | Display module stack structure and display device | |
| CN111986578A (en) | Display device | |
| CN114333606A (en) | Display module and display device | |
| CN113035067A (en) | Flexible film and display device | |
| CN111768715B (en) | Flexible display module and display device | |
| CN212750245U (en) | Display device | |
| KR20170138821A (en) | Shock-dispersive adhesive tapes and methods of fabricating the same | |
| CN110634396B (en) | Display panel | |
| CN112406233A (en) | Protection film, flexible display module and flexible terminal | |
| CN217933035U (en) | Flexible screen and foldable electronic equipment | |
| CN218568300U (en) | Display device | |
| CN218568299U (en) | Display device | |
| CN216980034U (en) | Display module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |