CN114038324A - Supporting assembly and flexible display device - Google Patents
Supporting assembly and flexible display device Download PDFInfo
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- CN114038324A CN114038324A CN202111402526.9A CN202111402526A CN114038324A CN 114038324 A CN114038324 A CN 114038324A CN 202111402526 A CN202111402526 A CN 202111402526A CN 114038324 A CN114038324 A CN 114038324A
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- support
- flexible display
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- display device
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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 supporting component and flexible display device, two first non-bending areas of flexible display device are located the relative both sides of first bending area, and flexible display device includes: a flexible display panel; and a support member located on a back surface of the light emitting side of the flexible display panel, the support member including: the middle supporting part is arranged corresponding to the first bending area and is provided with a first edge and a second edge which are oppositely arranged, and the first edge and the second edge extend in the direction of the first bending area pointing to the first non-bending area; and a plurality of notches distributed on at least one of the first edge and the second edge of the middle support portion. The utility model provides a plurality of breachs of support piece of flexible display device set up along at least one of the first edge of middle support portion and second edge for thereby the air in a plurality of breachs can be discharged when support piece laminating to flexible display panel under the vacuum condition avoids appearing the bulge.
Description
Technical Field
The application relates to the technical field of display, in particular to a supporting assembly and a flexible display device.
Background
The flexible display device application market is more and more favored by market favor, flexible display device means adopts the flexible, the display device of the good screen of pliability, compare in traditional screen, flexible screen advantage is obvious, not only more frivolous in volume, also be less than current display device in the consumption, help promoting flexible display device's duration, simultaneously based on its flexible, the good characteristic of pliability, its durable degree is also greatly higher than display screen in the past, can reduce the probability of unexpected damage. At present, a metal sheet 10 shown in fig. 1 is used as a support member for a flexible screen, a portion of the metal sheet 10 corresponding to a bending region 10a is designed with a plurality of closed holes 10b, and a bulge appears when the metal sheet 10 is attached to a flexible display panel 11 in a vacuum environment, as shown in fig. 2.
Therefore, there is a need to provide a solution to the problem of bulging of the support member including a plurality of closed holes when the support member is attached to the flexible display panel.
Disclosure of Invention
An object of the application is to provide a supporting component and flexible display device to solve the problem that the bulge appears when will include the support piece laminating of a plurality of closed holes to flexible display panel under the vacuum condition.
In order to realize the purpose, the technical scheme is as follows:
a flexible display device having a first inflection region and two first non-inflection regions adjacent to the first inflection region, the two first non-inflection regions being located on opposite sides of the first inflection region, the flexible display device comprising:
a flexible display panel; and
a support member located at a back side of a light emitting side of the flexible display panel, the support member comprising:
the middle supporting part is arranged corresponding to the first bending area, the middle supporting part is provided with a first edge and a second edge which are oppositely arranged, and the first edge and the second edge extend in the direction of the first bending area pointing to the first non-bending area; and
a plurality of notches distributed on at least one of the first edge and the second edge of the intermediate support portion.
A support assembly, the support assembly comprising:
a support member having a second inflection region and two second non-inflection regions adjacent to the second inflection region, the two second non-inflection regions being located at opposite sides of the second inflection region, the support member comprising:
the middle supporting part is arranged corresponding to the second bending area, the middle supporting part is provided with a first edge and a second edge which are oppositely arranged, and the first edge and the second edge extend in the direction of the second bending area pointing to the second non-bending area; and
a plurality of notches distributed on at least one of the first edge and the second edge of the middle support portion;
the first protection film is arranged on one side of the support and is bonded with the support; and
the second protection film is arranged on one side, far away from the first protection film, of the support and is bonded with the support.
Has the advantages that: the application provides a supporting component and flexible display device, a plurality of breachs of support piece set up on at least one in the first edge of middle support portion and second edge for the air in a plurality of breachs can discharge when support piece laminating to flexible display panel under the vacuum condition, avoids appearing the swell when support piece laminating to flexible display panel under the vacuum condition.
Drawings
FIG. 1 is a schematic plan view of a metal sheet according to the prior art;
FIG. 2 is a schematic view of the metal sheet shown in FIG. 1 attached to a flexible display panel under vacuum;
FIG. 3 is a schematic cross-sectional view of a flexible display device according to an embodiment of the present application in a flattened state;
FIG. 4 is a schematic cross-sectional view of the flexible display device of FIG. 3 in a fully folded state;
FIG. 5 is a schematic plan view of a support member of the flexible display device shown in FIG. 3;
fig. 6 is a schematic plan view of a support member of a flexible display device according to another embodiment of the present application;
FIG. 7 is a schematic cross-sectional view of a support assembly according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The present application provides a flexible display device 100, where the flexible display device 100 may be a foldable display device, and the flexible display device 100 may also be a rolled display device. Specifically, as shown in fig. 3 and 4, the flexible display device 100 is a foldable display device, and the flexible display device 100 has a first bending region 100a and two first non-bending regions 100b adjacent to the first bending region 100a, and the two first non-bending regions 100b are located at two opposite sides of the first bending region 100 a. The flexible display device 100 includes a protection layer 20, a support 30, a first adhesive layer 801, a buffer layer 40, a second adhesive layer 802, a flexible display panel 50, a third adhesive layer 803, a polarizer 60, a fourth adhesive layer 804, and a protection cover 70, which are sequentially stacked.
In the present embodiment, the protective cover 70 functions to protect the polarizer 60, the flexible display panel 50, and the like. The protective cover 70 is transparent and flexible, and the protective cover 70 includes a transparent organic film layer.
In the present embodiment, the polarizer 60 functions to reduce the reflectance of ambient light. The polarizer 60 and the protective cover 70 are bonded by a fourth adhesive layer 804, and the fourth adhesive layer 804 is an optical adhesive layer.
In the present embodiment, the flexible display panel 50 is used for display. The polarizer 60 and the flexible display panel 50 are bonded by a third adhesive layer 803, and the third adhesive layer 803 is a pressure-sensitive adhesive. The flexible display panel 50 includes a flexible organic light emitting diode display panel. The flexible display panel 50 may further include a touch layer integrated on the flexible organic light emitting diode display panel, i.e. the flexible display panel 50 has a touch function in addition to the display function.
In the present embodiment, the buffer layer 40 has a buffer function, and the buffer function of the buffer layer 40 prevents the flexible display panel 50 from being damaged by an external force. The buffer layer 40 and the flexible display panel 50 are bonded by a second adhesive layer 802, and the second adhesive layer 802 is a pressure sensitive adhesive. The buffer layer 40 is a foamed layer.
In this embodiment, the supporting member 30 provides a supporting force for the portion of the flexible display panel 50 that does not need to be bent, and at the same time, ensures that the portion of the flexible display panel 50 that needs to be bent can be bent. The supporting member 30 is located on the back of the light-emitting side of the flexible display panel 50, the supporting member 30 and the buffer layer 40 are bonded by a first adhesive layer 801, and the first adhesive layer 801 is a pressure-sensitive adhesive. The thickness of support 30 is 50 microns to 400 microns, for example, the thickness of support 30 is 50 microns, 100 microns, 150 microns, 250 microns, 300 microns, 350 microns, and 400 microns. The support 30 is a steel sheet. It is understood that the support 30 may be made of a metal material such as an aluminum alloy, a magnesium alloy, or a titanium alloy, and the support 30 may also be made of a material such as glass or carbon fiber.
In the present embodiment, as shown in fig. 5 and 6, the support 30 includes a first support part 301, a second support part 302, an intermediate support part 303, and a plurality of notches 30a, the intermediate support part 303 being located between the first support part 301 and the second support part 302.
The first support portion 301 and the second support portion 302 are both flat. The first supporting portion 301 and the second supporting portion 302 are respectively disposed corresponding to the two first non-bending regions 100b and respectively support portions of the flexible display panel 50 corresponding to the two first non-bending regions 100 b. The middle support portion 303 is disposed corresponding to the first bending region 100a and supports a portion of the flexible display panel 50 corresponding to the first bending region 100a, the middle support portion 303 has a first edge 303a and a second edge 303b disposed opposite to each other, the first edge 303a and the second edge 303b extend in a direction in which the first bending region 100a points to the first non-bending region 100b, the plurality of notches 30a are distributed on at least one of the first edge 303a and the second edge 303b of the middle support portion 303, and a depth of the plurality of notches 30a in a thickness direction of the support member 30 is less than or equal to a thickness of the support member 30.
Specifically, as shown in fig. 5, in a direction perpendicular to the direction in which the first bending region 100a points toward the first non-bending region 100b, i.e., in a direction perpendicular to the direction in which the intermediate support 303 points toward the first support 301 or the second support 302, the size of the notch 30a is equal to the size of the intermediate support 303, that is, the notch 30a extends from the first edge 303a to the second edge 303b of the intermediate support 303; the depth of the plurality of notches 30a in the thickness direction of the support 30 is equal to the thickness of the support 30. The middle support portion 303 includes a plurality of support bars 3031, the support bars 3031 are disconnected from each other, the support bars 3031 and the gaps 30a are alternately disposed in a direction in which the first bending region 100a points to the first non-bending region 100b, and the support bars 3031 of the middle support portion 303 are all adhered to the first adhesive layer 801.
As shown in fig. 5, when the flexible display device 100 is in the flattened state, a dimension w2 of the notch 30a in a direction in which the first bending region 100a points to the first non-bending region 100b is smaller than a dimension w1 of the supporting bar 3031, so that the middle supporting portion 303 has good flexibility, and at the same time, functions to support a portion of the flexible display panel 50 corresponding to the first bending region 100 a. The plurality of supporting bars 3031 have the same size in the direction in which the first bending region 100a points to the first non-bending region 100b, and the plurality of notches 30a have the same size in the direction in which the first bending region 100a points to the first non-bending region 100 b. It is understood that the plurality of supporting bars 3031 may have different sizes in the direction in which the first bending region 100a points to the first non-bending region 100b, and the plurality of notches 30a may have different sizes in the direction in which the first bending region 100a points to the first non-bending region 100 b.
Specifically, the support strip 3031 has a dimension in the direction in which the first bending region 100a points to the first non-bending region 100b of 0.1 mm to 2 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm. When the flexible display device 100 is in the flattened state, the size of the notch 30a in the direction in which the first bending region 100a points to the first non-bending region 100b is 0.1 mm to 0.7 mm, such as 0.15 mm, 0.2 mm, 0.3 mm, and 0.5 mm.
As shown in fig. 4, when the flexible display device 100 is in the folded state, the distance d between two adjacent support bars 3031 is greater than 0 mm to avoid interference between the plurality of support bars 3031 of the middle support 303 in the folded state. When the flexible display device 100 is in a folded state, a distance between two adjacent support bars 3031 is less than or equal to 0.5 mm, so as to ensure that the plurality of support bars 3031 support a portion of the flexible display panel 50 corresponding to the first bending region 100 a. The folding angle of the flexible display device 100 in the folded state is greater than 0 degree, and may be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees, or 90 degrees or more. Specifically, the flexible display device 100 in the folded state is in a fully folded state. In addition, the flexible display device 100 in the folded state may be U-folded, wedge-folded, or water drop-folded.
It should be noted that, under the condition that the bending radius of the flexible display device 100 is constant, when the flexible display device 100 is in the flat state, the dimension of the notch 30a in the direction in which the first bending region 100a points to the first non-bending region 100b needs to be designed in consideration of the etching precision of the notch 30a, the attaching precision of the supporting member 30, the displacement of the first adhesive layer 801, and the distance between two adjacent supporting bars 3031 when the flexible display device 100 is in the bending state.
The middle support portion 303 of the supporting member 30 in this embodiment is composed of a plurality of support bars 3031 that are disconnected from each other, gaps 30a are formed between two adjacent support bars 3031, between the support bar 3031 near the first support portion 301 and the first support portion 301, and between the support bar 3031 near the second support portion 302 and the second support portion 302, when the supporting member 30 is adhered to the back surface of the flexible display panel 50 through the first adhesive layer 801 under a vacuum condition, air in the gaps 30a is exhausted, no bulge occurs between the first adhesive layer 801 and the supporting member 30, and the flexible display panel 50 can be smoothly adhered to the supporting member 30.
It should be noted that, after the supporting member 30 is attached to the buffer layer 40 through the first adhesive layer 801, the buffer layer 40 is attached to the back surface of the flexible display panel 50 through the second adhesive layer 802 under a vacuum condition, so as to attach the supporting member 30 to the back side of the flexible display panel 50.
Fig. 6 is a schematic plan view of a support member of a flexible display device according to another embodiment of the present application. The middle support 303 has a comb shape, and the middle support 303 includes a middle connection portion 3032 and a plurality of bar members 3033 connected to opposite sides of the middle connection portion 3032. The plurality of notches include a plurality of first notches 30a1 and a plurality of second notches 30a2, the first notch 30a1 is disposed on the first edge 303a, the second notch 30a2 is disposed on the second edge 303b, the second notches 30a2 and the first notches 30a1 are symmetrically disposed, the bar members 3033 and the first notches 30a1 close to the first edge 303a are alternately disposed, and the bar members 3033 and the second notches 30a2 close to the second edge 303b are alternately disposed. No groove or opening is provided between the first notch 30a1 and the second notch 30a2 symmetrically disposed with respect to the first notch 30a1, that is, no groove or opening is provided on the intermediate connecting portion 3032, thereby preventing air from being unable to be discharged during vacuum bonding due to a closed space formed on the intermediate support portion 303. The first notch 30a1 and the second notch 30a2 are the same, the depth of the first notch 30a1 and the depth of the second notch 30a2 in the thickness direction of the supporting member 30 are equal to the thickness of the supporting member 30, and the first notch 30a1 and the second notch 30a2 are both U-shaped notches. It is understood that the first notch 30a1 and the second notch 30a2 can be rectangular notches.
When the supporting member 30 shown in fig. 6 is attached to the back surface of the flexible display panel 50 through the first adhesive layer 801 under a vacuum condition, since the first notch 30a1 and the second notch 30a2 are both open-type openings, air in the first notch 30a1 and the second notch 30a2 can be exhausted, so that a bulge is prevented from being formed between the supporting member 30 and the first adhesive layer 801.
In the present embodiment, the protection layer 20 is disposed at least on the surface of the middle support 303 away from the flexible display panel 50 to prevent dust from entering the notch 30a of the middle support 303. Specifically, the protection layer 20 covers the surface of the support 30 away from the flexible display panel 50. The protective layer 20 is an adhesive tape, and the surface of the protective layer 20 in contact with the intermediate support 303 has adhesiveness.
As shown in fig. 7, the present application further provides a support assembly 400, wherein the support assembly 400 includes a support 30, a first protection film 901 and a second protection film 902. The first protection film 901 is disposed on one side of the support 30 and adhered to the support 30, and the second protection film 902 is disposed on one side of the support 30 away from the first protection film 901 and adhered to the support 30.
The supporting member 30 has a second bending region 30b and two second non-bending regions 30c adjacent to the second bending region 30b, the two second non-bending regions 30c are located at two opposite sides of the second bending region 30b, the second bending region 30b corresponds to the first bending region 100a, and the second non-bending region 30c corresponds to the first non-bending region 100b, which will not be described in detail herein. The supporting member 30 includes a first supporting portion 301, a second supporting portion 302, a middle supporting portion 303 and a plurality of notches 30a, the first supporting portion 301 and the second supporting portion 302 are respectively disposed corresponding to the two second non-bending regions 30c, and the middle supporting portion 303 is disposed corresponding to the second bending region 30 b. The first supporting portion 301, the second supporting portion 302, the middle supporting portion 303 and the plurality of notches 30a of the supporting member 30 may be as shown in fig. 5, or as shown in fig. 6, and are not described in detail herein.
In the present embodiment, the adhesion strength between the first protection film 901 and the support 30 and the adhesion strength between the second protection film 902 and the support 30 are different, so that when one of the first protection film 901 and the second protection film 902, which has a smaller adhesion strength, and the support 30 is peeled off from the support 30, one of the first protection film 901 and the second protection film 902, which has a larger adhesion strength, and the support 30 can still be adhered to the support 30.
Specifically, the adhesive strength between the first protection film 901 and the support 30 is greater than the adhesive strength between the second protection film 902 and the support 30. For example, the adhesive strength between the first protective film 901 and the support 30 is 15gf/inch to 20gf/inch, and the adhesive strength between the second protective film 902 and the support 30 is 1gf/inch to 10 gf/inch. When the support 30 is attached to the flexible display panel 50, the second protection film 902 is removed, the support 30 is attached to the back side of the flexible display panel 50 through the first adhesive layer 801 under a vacuum condition, and the first protection film 901 is removed after the support 30 is adhered to the back side of the flexible display panel 50 through the first adhesive layer 801.
The above description of the embodiments is only for assisting understanding of the technical solutions and the core ideas thereof; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A flexible display device, wherein the flexible display device has a first bending region and two first non-bending regions adjacent to the first bending region, and the two first non-bending regions are located at two opposite sides of the first bending region, the flexible display device comprising:
a flexible display panel; and
a support member located at a back side of a light emitting side of the flexible display panel, the support member comprising:
the middle supporting part is arranged corresponding to the first bending area, the middle supporting part is provided with a first edge and a second edge which are oppositely arranged, and the first edge and the second edge extend in the direction of the first bending area pointing to the first non-bending area; and
a plurality of notches distributed on at least one of the first edge and the second edge of the intermediate support portion.
2. The flexible display device according to claim 1, wherein a dimension of the gap is equal to a dimension of the intermediate support in a direction perpendicular to the first bending region pointing to the first non-bending region;
the middle support part comprises a plurality of support bars;
when the flexible display device is in a flattening state, the support bars and the notches are alternately arranged in the direction of the first bending area pointing to the first non-bending area.
3. The flexible display device of claim 2, wherein a spacing between two adjacent support bars is greater than 0 mm when the flexible display device is in a folded state.
4. The flexible display device of claim 1, wherein the plurality of notches comprises:
a first notch disposed on the first edge; and
the second notch is arranged on the second edge and is symmetrically arranged with the first notch;
and a groove or an opening is not arranged between the first notch and the second notch symmetrically arranged with the first notch.
5. The flexible display device according to any of claims 1-4, further comprising:
and the adhesive layer covers the surface, close to the flexible display panel, of the support piece.
6. A flexible display device according to any of claims 1-4, wherein the size of the gap in the thickness direction of the support is equal to the thickness of the support.
7. A support assembly, characterized in that the support assembly comprises:
a support member having a second inflection region and two second non-inflection regions adjacent to the second inflection region, the two second non-inflection regions being located at opposite sides of the second inflection region, the support member comprising:
the middle supporting part is arranged corresponding to the second bending area, the middle supporting part is provided with a first edge and a second edge which are oppositely arranged, and the first edge and the second edge extend in the direction of the second bending area pointing to the second non-bending area; and
a plurality of notches distributed on at least one of the first edge and the second edge of the middle support portion;
the first protection film is arranged on one side of the support and is bonded with the support; and
the second protection film is arranged on one side, far away from the first protection film, of the support and is bonded with the support.
8. The support assembly of claim 7, wherein the gap has a dimension equal to a dimension of the intermediate support portion in a direction perpendicular to the second inflection zone pointing toward the second non-inflection zone;
the middle support part comprises a plurality of support bars;
when the supporting piece is in a flattening state, the supporting strips and the notches are alternately arranged in the direction of the second bending area pointing to the second non-bending area.
9. The support assembly of claim 7, wherein the plurality of notches comprises:
a first notch disposed on the first edge; and
the second notch is arranged on the second edge and is symmetrically arranged with the first notch;
and a groove or an opening is not arranged between the first notch and the second notch symmetrically arranged with the first notch.
10. The support assembly of claim 7, wherein a bonding strength between the first protective film and the support is different from a bonding strength between the second protective film and the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402526.9A CN114038324A (en) | 2021-11-24 | 2021-11-24 | Supporting assembly and flexible display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111402526.9A CN114038324A (en) | 2021-11-24 | 2021-11-24 | Supporting assembly and flexible display device |
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| CN114038324A true CN114038324A (en) | 2022-02-11 |
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| CN202111402526.9A Pending CN114038324A (en) | 2021-11-24 | 2021-11-24 | Supporting assembly and flexible display device |
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| CN114523735A (en) * | 2022-02-21 | 2022-05-24 | 京东方科技集团股份有限公司 | Support assembly, manufacturing method thereof and display device |
| CN114882794A (en) * | 2022-05-23 | 2022-08-09 | 武汉华星光电半导体显示技术有限公司 | Display module |
| US20230157131A1 (en) * | 2020-12-29 | 2023-05-18 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible display panel and flexible display device |
| WO2024027023A1 (en) * | 2022-08-02 | 2024-02-08 | 昆山国显光电有限公司 | Display module and display apparatus |
| WO2024053700A1 (en) * | 2022-09-08 | 2024-03-14 | 大日本印刷株式会社 | Metal support for flexible display device, production method therefor, and flexible display device |
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