CN111312079A - Flexible device - Google Patents
Flexible device Download PDFInfo
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- CN111312079A CN111312079A CN202010163682.3A CN202010163682A CN111312079A CN 111312079 A CN111312079 A CN 111312079A CN 202010163682 A CN202010163682 A CN 202010163682A CN 111312079 A CN111312079 A CN 111312079A
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- flexible
- display surface
- flexible module
- plate
- pressing plate
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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
Abstract
The application provides a flexible device, including flexible module, clamp plate and diving board. The flexible module comprises a display surface and a non-display surface deviating from the display surface. The pressing plate is arranged on the non-display surface and used for bending the flexible module into a preset shape when the flexible module is bent. The elastic plate is connected with the pressing plate, arranged on one side of the pressing plate close to the non-display surface and attached to the non-display surface; and when the flexible module is bent, the elastic plate extends to the area between the inward bending area and the outward bending area. Because the flexible device in this application embodiment has set up clamp plate and bullet board, the setting of bullet board can resist the tensile of the rete that the region includes between flexible module intubate region and the outer curved region to play the effect that reduces stress, the condition of avoiding flexible module layering and fracture that can be better takes place.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible device.
Background
With the development of display technology, flexible display devices are becoming more and more widely used as flat panel display devices because of their advantages such as low power consumption and flexible flexibility. The flexible display device may be classified into a wrist band type display device, a folding type display device, and a curling type display device according to different bending radii of the flexible display device.
However, the applicant has found that, in the conventional folding display device, stress in the folding region is excessive, and stress concentration inside the module is likely to occur, which leads to delamination and breakage of the module. In addition, folding type display device has thickened module thickness with the in-process of complete machine integration, has changed the rete structure of module, and stress does not have the department release and leads to showing inefficacy when whole module is buckled.
Disclosure of Invention
In view of this, the present application provides a flexible device for solving the technical problem that the module in the flexible display device is too stressed at the bending portion, which easily causes the module to delaminate and break.
In order to solve the above problem, the embodiments of the present application mainly provide the following technical solutions:
the embodiment of the application discloses a flexible device, which comprises a flexible module, a pressing plate and an elastic plate;
the flexible module comprises a display surface and a non-display surface deviating from the display surface;
the pressing plate is arranged on the non-display surface and used for bending the flexible module into a preset shape when the flexible module is bent;
the elastic plate is connected with the pressing plate, arranged on one side of the pressing plate close to the non-display surface and attached to the non-display surface; and
when the flexible module is bent, the elastic plate extends to the region between the inward bending region and the outward bending region.
Optionally, the elastic plate comprises a first elastic plate and a second elastic plate, and the first elastic plate and the second elastic plate are symmetrically arranged about the symmetry axis of the flexible module.
Optionally, the elastic modulus of the springboard is 150 to 250 gigapascals.
Optionally, the thickness of the spring plate in the direction perpendicular to the flexible module is 20 to 100 micrometers.
Optionally, the material of the springboard comprises a stainless steel material.
Optionally, when the flexible module is unfolded, a distance between the first edge of the first elastic plate and the first edge of the second elastic plate is greater than or equal to zero;
the first edge of the first elastic plate is the side edge of the first elastic plate close to the symmetry axis of the flexible module;
the first edge of the second elastic plate is the side edge of the second elastic plate close to the symmetry axis of the flexible module.
Optionally, the pressing plate includes a first pressing plate and a second pressing plate, and the first pressing plate and the second pressing plate are symmetrically arranged with respect to a symmetry axis of the flexible module.
Optionally, the material of the platen comprises a stainless steel material.
Optionally, when the flexible module is unfolded, a distance between the first edge of the first pressing plate and the first edge of the second pressing plate is 20 mm to 50 mm;
the first edge of the first pressing plate is the side edge of the first pressing plate close to the symmetry axis of the flexible module;
the first edge of the second pressing plate is the side edge of the second pressing plate close to the symmetry axis of the flexible module.
Optionally, when the flexible module is bent, the display surface includes a first display surface and a second display surface, and a distance between the first display surface and the second display surface is 0.2 mm to 1 mm;
the first display surface is close to the first pressing plate, and the second display surface is close to the second pressing plate.
By means of the technical scheme, the technical scheme provided by the embodiment of the application at least has the following advantages:
because the flexible device in this application embodiment includes the bullet board of being connected with the clamp plate, the setting of bullet board is close to the one side of non-display surface at the clamp plate, and the laminating of non-display surface, when flexible module is crooked, the bullet board extends to the region between intubate region and the outer bend region, the setting of bullet board can resist the tensile of the regional rete that includes between flexible module intubate region and the outer bend region, thereby play the effect that reduces stress, the condition emergence of avoiding flexible module layering and fracture that can be better. In addition, the bounce effect of bullet board because flexible module also can follow flexible module and take place deformation, with the support that flexible module was given in the laminating of flexible module.
The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and the embodiments of the present application can be implemented according to the content of the description in order to make the technical means of the embodiments of the present application more clearly understood, and the detailed description of the embodiments of the present application will be given below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present application more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the alternative embodiments. The drawings are only for purposes of illustrating alternative embodiments and are not to be construed as limiting the embodiments of the present application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view showing a structure of a conventional flexible display device when it is bent;
FIG. 2 is a schematic view of a flexible device according to an embodiment of the present application when bent;
FIG. 3 is a schematic view of a flexible device according to an embodiment of the present application in an expanded configuration;
fig. 4 is a schematic structural diagram of a flexible module according to an embodiment of the present application.
The reference numerals are introduced as follows:
1' -a flexible display device; 1-a flexible device; 2-a flexible module; 21-a display surface; 211 — a first display surface; 212-a second display surface; 22-non-display surface; 3, pressing a plate; 31-a first platen; 32-a second platen; 4-springboard; 41-a first springboard; 42-a second springboard; 5-an inturned region; 6-an out-turned region;
10-a support layer or functional layer; 11-a backing film; 12-an organic light-emitting layer; 13-a touch layer; 14-an optical film layer; 15-an optical clear adhesive layer; 16-cover plate.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be 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 scope of the disclosure to those skilled in the art.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As the bending radius of the flexible display device is gradually decreased, the applicant found that it is more advantageous for the bending radius of the flexible display device to be decreased when the flexible display device is in a droplet shape after being bent. Fig. 1 shows a schematic view of a prior art flexible display device 1' when bent. As shown in fig. 1, the flexible display device 1' comprises a flexible module 2 and two press plates 3, wherein the flexible module comprises a display surface 21 and a non-display surface 22 facing away from the display surface 21. Two clamp plates 3 are respectively arranged on one side of the non-display surface 22 far away from the display surface 21 and partially extend to the outward bending area 6 of the flexible display device 1', the clamp plates 3 are arranged at two ends of the flexible module 2, and when the flexible module 2 is bent, the clamp plates 3 can enable the flexible module 2 to be in a water drop shape after being bent.
The flexible display device 1 'which is drop-shaped after bending comprises an inward bending region 5 and an outward bending region 6, and fig. 1 shows the inward bending region 5 and the outward bending region 6 of the flexible display device 1', wherein the inward bending region 5 is the region where the flexible module 2 is bent to the greatest extent.
The applicant has found that the bent flexible display device 1' shown in fig. 1 generates a large compressive stress to the transparent optical Adhesive (OCA) in the flexible module 2 in the region between the inner bending region 5 and the outer bending region 6, and the compressive stress causes a large increase in the thickness direction of the OCA (i.e. the direction perpendicular to the flexible substrate of the flexible module 2), which results in that the cohesion of the OCA is insufficient to resist the deformation in the thickness direction, so that the OCA peels off (peeing) to affect the performance of the flexible module 2, and even to break the flexible module 2.
The embodiment of the application aims at the problems and provides the flexible device for reducing the stress concentration problem of the flexible module, so that the layering and the fracture of the flexible module can be effectively avoided.
The embodiment of the application provides a flexible device, which comprises a flexible module, a pressing plate and an elastic plate; the flexible module comprises a display surface and a non-display surface deviating from the display surface; the pressing plate is arranged on the non-display surface and used for bending the flexible module into a preset shape when the flexible module is bent; the elastic plate is connected with the pressing plate, arranged on one side of the pressing plate close to the non-display surface and attached to the non-display surface; and when the flexible module is bent, the elastic plate extends to the area between the inward bending area and the outward bending area.
Because the flexible device in this application embodiment includes the bullet board of being connected with the clamp plate, the setting of bullet board is close to the one side of non-display surface at the clamp plate, and the laminating of non-display surface, when flexible module is crooked, the bullet board extends to the region between intubate region and the outer bend region, the setting of bullet board can resist the tensile of the regional rete that includes between flexible module intubate region and the outer bend region, thereby play the effect that reduces stress, the condition emergence of avoiding flexible module layering and fracture that can be better. In addition, the bounce effect of bullet board because flexible module also can follow flexible module and take place deformation, with the support that flexible module was given in the laminating of flexible module.
Fig. 2 shows a schematic structural view of the flexible device 1 according to the embodiment of the present invention when it is bent, and fig. 3 shows a schematic structural view of the flexible device 1 when it is unfolded, and when the flexible module 2 according to the embodiment of the present invention is bent, the flexible module 2 is bent into a drop shape by the pressing plate.
As shown in fig. 2 and 3, the flexible device 1 includes a flexible module 2, a pressing plate 3 and an elastic plate 4. The flexible module 2 includes a display surface 21 and a non-display surface 22 opposite to the display surface 21. The clamp plate 3 is arranged on the non-display surface 22, and is used for bending the flexible module 2 into a preset shape when the flexible module 2 is bent, and the clamp plate 3 is used for bending the flexible module 2 into a water drop shape when the flexible module 2 is bent. The elastic plate 4 is connected with the pressing plate 3, is arranged on one side of the pressing plate 3 close to the non-display surface 22, and is attached to the non-display surface 22. When the flexible module 2 is bent, the spring plate 4 extends to a region between the inflected region 5 and the inflected region 6.
Since the flexible device 1 in the embodiment of the present application is provided with the pressing plate 3 and the elastic plate 4 connected to the pressing plate 3, the pressing plate 3 is disposed on the non-display surface 22 for bending the flexible module 2 into a predetermined shape when the flexible module 2 is bent. Meanwhile, the elastic plate 4 is arranged on one side of the pressing plate 3 close to the non-display surface 22 and is attached to the non-display surface 22. When the flexible device 1 is folded and bent, the flexible module 2 in the bending area is bent into a preset shape (for example, similar to a drop shape) by the pressing plate 3 and the elastic plate 4, and the elastic plate 4 extends to the area between the inward bending area 5 and the outward bending area 6, so that the elastic plate can resist the stretching of the film layer included in the area between the inward bending area 5 and the outward bending area 6 of the flexible module, the stress is uniformly applied to the flexible module 2, the problem of stress concentration is effectively reduced, and the condition that the module is layered and broken is avoided.
As shown in fig. 2, experiments have shown that when the flexible module 2 is bent into a drop shape, stress is generally concentrated mainly in the region located between the outward bending region 6 and the inward bending region 5 in fig. 2. In order to bend the stress evenly distributed that flexible module 2 produced to flexible module 2 on the surface, this application embodiment has set up bullet board 4, and bullet board 4 is connected with clamp plate 3, and laminates with flexible module 2's non-display surface 22.
As shown in fig. 2 and 3, the elastic plate 4 includes a first elastic plate 41 and a second elastic plate 42, and the first elastic plate 41 and the second elastic plate 42 are symmetrically disposed about the symmetry axis of the flexible module 2. Based on the above design, when the flexible module 2 is bent, the first elastic plate 41 and the second elastic plate 42 can uniformly distribute the stress concentrated in the outer bent region 6 and the region between the outer bent region 6 and the inner bent region 5 to the surface of the flexible module 2, further ensuring that the flexible module 2 does not break.
Fig. 4 shows a specific structural diagram of a flexible module according to an embodiment of the present application. As shown in fig. 4, the flexible module 2 of the embodiment of the present application is sequentially provided with: a support layer or functional layer 10, a back film 11, an organic light emitting layer 12, a touch layer 13, an optical film layer 14, an optical transparent adhesive layer 15, and a cover plate 16. The specific structure of the flexible module 2 is similar to the prior art, and is not described in detail here.
Alternatively, since the flexible module 2 itself has a certain rigidity, if the elastic plate 4 is made of a more flexible material such as rubber, the elastic plate 4 is not disposed to well resist the stretching of the film layer included in the region between the inflected region and the inflected region of the flexible module. Therefore, the material of the springboard 4 in the embodiment of the present application includes a stainless steel material. Further optionally, the elastic modulus of the springboard 4 is 150 to 250 gigapascals.
Certainly, if the thickness of the elastic plate 4 made of stainless steel is too large, the flexible module 2 is broken when the elastic plate is bent, and the elasticity is relatively reduced due to too large thickness, so that an ideal technical effect cannot be achieved. Therefore, in the present embodiment, as shown in fig. 3, the thickness D1 of the elastic plate 4 in the direction perpendicular to the flexible module 2 is 20 micrometers to 100 micrometers, and the elastic plate 4 within this thickness can have both good elasticity and a certain supporting function.
As shown in fig. 3, in the embodiment of the present application, when the flexible device 1 is in the unfolded state, the first elastic plate 41 should not touch the second elastic plate 42, so as to avoid scratching the flexible module 2, and even to break the flexible module 2. Therefore, optionally, when the flexible module 2 is unfolded, the distance d between the first edge of the first springboard 41 and the first edge of the second springboard 42 is greater than or equal to zero. Specifically, the first edge of the first spring plate 41 is a side edge of the first spring plate 41 close to the symmetry axis of the flexible module 2. The first edge of the second spring plate 42 is the side edge of the second spring plate 42 close to the symmetry axis of the flexible module 2.
Alternatively, as shown in fig. 2 and 3, the pressing plate 3 includes a first pressing plate 31 and a second pressing plate 32, and the first pressing plate 31 and the second pressing plate 32 are symmetrically disposed about the symmetry axis of the flexible module 2. As shown in fig. 2, the first pressing plate 31 is fixedly connected to one end of the first elastic plate 41. Similarly, the second pressing plate 32 is fixedly connected to one end of the second elastic plate 42. The provision of the first and second press plates 31 and 32 enables the flexible module 2 to be better bent into a drop shape.
In order to reduce the manufacturing cost and improve the market competitiveness, the material of the pressing plate 3 of the embodiment of the present application may include a stainless steel material, which is the same as the material of the elastic plate 4, and of course, when actually designed, the pressing plate 3 may also be selected from other types of materials, such as metal aluminum (Al).
Alternatively, as shown in fig. 2 and 3, when the flexible module 2 is unfolded, the distance D2 between the first edge of the first pressing plate 31 and the first edge of the second pressing plate 32 is 20 mm to 50 mm, and the first edge of the first pressing plate 31 is the side edge of the first pressing plate 31 close to the symmetry axis of the flexible module 2. The first edge of the second press plate 32 is the side edge of the second press plate 32 close to the symmetry axis of the flexible module 2. Since the flexible device is generally integrated in a small product (e.g., a smart watch or a bracelet) or a medium product (e.g., a mobile phone or a tablet computer), the distance between the first pressing plate 31 and the second pressing plate 32 is not too large or too small, and if the distance is too large or too small, the integration of the flexible device is not facilitated.
Optionally, when the flexible module 2 is bent, referring to fig. 2, the display surface 21 includes a first display surface 211 and a second display surface 212, and a distance D3 between the first display surface 211 and the second display surface 212 is 0.2 mm to 1 mm. The first display surface 211 is close to the first pressing plate 31, and the second display surface 212 is close to the second pressing plate 32, so that the flexible device has more design advantages in appearance, and can meet the design requirements of most flexible display products.
The beneficial effects obtained by applying the embodiment of the application comprise:
1. since the flexible device 1 in the embodiment of the present application is provided with the pressing plate 3 and the elastic plate 4 connected to the pressing plate 3, the pressing plate 3 is disposed on the non-display surface 22 for bending the flexible module 2 into a predetermined shape when the flexible module 2 is bent. Meanwhile, the elastic plate 4 is arranged on one side of the pressing plate 3 close to the non-display surface 22 and is attached to the non-display surface 22. When the flexible device 1 is folded and bent, the flexible module 2 in the bending area is bent into a preset shape (for example, similar to a drop shape) by the pressing plate 3 and the elastic plate 4, and the elastic plate 4 extends to the area between the inward bending area 5 and the outward bending area 6, so that the elastic plate can resist the stretching of the film layer included in the area between the inward bending area 5 and the outward bending area 6 of the flexible module, the stress is uniformly applied to the flexible module 2, the problem of stress concentration is effectively reduced, and the condition that the module is layered and broken is avoided.
2. The embodiment of this application's embodiment flexible device 1 is including playing board 4, because the bounce-back effect of flexible mould 2, plays board 4 and also can follow flexible module 2 and take place deformation, with the support that flexible module 2 was given in the laminating of flexible module 2.
3. The clamp plate 3 and the springboard 4 of the embodiment of the application are made of stainless steel, so that stable acting force can be provided for the flexible module 2, the flexible module 2 is supported, material selection cost can be reduced, and market competitiveness is improved.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. A flexible device is characterized by comprising a flexible module, a pressing plate and an elastic plate;
the flexible module comprises a display surface and a non-display surface deviating from the display surface;
the pressing plate is arranged on the non-display surface and used for bending the flexible module into a preset shape when the flexible module is bent;
the elastic plate is connected with the pressing plate, arranged on one side of the pressing plate close to the non-display surface and attached to the non-display surface; and
when the flexible module is bent, the elastic plate extends to the region between the inward bending region and the outward bending region.
2. The flexible device of claim 1, wherein the spring plate comprises a first spring plate and a second spring plate, the first spring plate and the second spring plate being symmetrically disposed about an axis of symmetry of the flexible module.
3. The flexible device of claim 2 wherein said spring plate has a modulus of elasticity of from 150 gigapascals to 250 gigapascals.
4. The flexible device of claim 2, wherein the thickness of the spring plate in a direction perpendicular to the flexible mold is 20 microns to 100 microns.
5. The flexible device of claim 2 wherein the material of said spring plate comprises a stainless steel material.
6. The flexible device of any one of claims 2-5, wherein the distance between the first edge of the first springboard and the first edge of the second springboard is greater than or equal to zero when the flexible die set is unfolded;
the first edge of the first elastic plate is the side edge of the first elastic plate close to the symmetry axis of the flexible module;
the first edge of the second elastic plate is the side edge of the second elastic plate close to the symmetry axis of the flexible module.
7. The flexible device of claim 1, wherein the pressure plate comprises a first pressure plate and a second pressure plate, the first pressure plate and the second pressure plate being symmetrically disposed about an axis of symmetry of the flexible module.
8. The flexible device of claim 7, wherein the material of the pressure plate comprises a stainless steel material.
9. The flexible device of claim 7 or 8, wherein the distance between the first edge of the first platen and the first edge of the second platen when the flexible module is deployed is between 20 mm and 50 mm;
the first edge of the first pressing plate is the side edge of the first pressing plate close to the symmetry axis of the flexible module;
the first edge of the second pressing plate is the side edge of the second pressing plate close to the symmetry axis of the flexible module.
10. The flexible device of claim 9, wherein when the flexible module is bent, the display surface comprises a first display surface and a second display surface, and a distance between the first display surface and the second display surface is 0.2 mm to 1 mm;
the first display surface is close to the first pressing plate, and the second display surface is close to the second pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010163682.3A CN111312079A (en) | 2020-03-10 | 2020-03-10 | Flexible device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010163682.3A CN111312079A (en) | 2020-03-10 | 2020-03-10 | Flexible device |
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| CN111312079A true CN111312079A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010163682.3A Pending CN111312079A (en) | 2020-03-10 | 2020-03-10 | Flexible device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111882993A (en) * | 2020-08-18 | 2020-11-03 | 京东方科技集团股份有限公司 | Folding display device |
| CN112164314A (en) * | 2020-09-30 | 2021-01-01 | 京东方科技集团股份有限公司 | Preparation method of display device and display device |
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| CN112164314A (en) * | 2020-09-30 | 2021-01-01 | 京东方科技集团股份有限公司 | Preparation method of display device and display device |
| CN112164314B (en) * | 2020-09-30 | 2022-09-23 | 京东方科技集团股份有限公司 | Preparation method of display device and display device |
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