CN111667760B - Flexible display device - Google Patents
Flexible display device Download PDFInfo
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- CN111667760B CN111667760B CN202010505617.4A CN202010505617A CN111667760B CN 111667760 B CN111667760 B CN 111667760B CN 202010505617 A CN202010505617 A CN 202010505617A CN 111667760 B CN111667760 B CN 111667760B
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- flexible display
- display module
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- pressing block
- curled
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- 238000003825 pressing Methods 0.000 claims description 45
- 230000008093 supporting effect Effects 0.000 claims description 33
- 238000003860 storage Methods 0.000 description 24
- 238000005096 rolling process Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
The application provides a flexible display device. The flexible display module comprises a curled accommodating part, a stretching part, a flexible display module and a tension limiting part, wherein the curled end of the flexible display module and the free end of the flexible display module are oppositely arranged, the curled end of the flexible display module is fixedly connected with the curled accommodating part, the free end of the flexible display module is fixedly connected with the stretching part, the flexible display module can be curled and accommodated in the curled accommodating part, and the free end of the flexible display module can move under the driving of the stretching part; the tensile force limiting portion is arranged on the curling accommodating portion, when the first acting force far away from the curling accommodating portion is applied to the stretching portion, and the length of the flexible display module extending out of the curling accommodating portion is within a preset range, the tensile force limiting portion provides a second acting force opposite to the first acting force direction for the flexible display module. The abnormity such as tearing is avoided, and the reliability of the flexible display device is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible display device.
Background
With the development of display technology, users have made various demands on display devices. In order to meet different use requirements, various display products with different characteristics are applied accordingly. In particular, consumers now seek a simple large screen, and hopefully realize the large screen and better satisfy the requirements of portability and reliability.
Disclosure of Invention
According to an embodiment of the present application, there is provided a flexible display device including:
a curl receiving portion;
a stretching section;
the flexible display module comprises a flexible display module curled end and a flexible display module free end which are arranged oppositely, the flexible display module curled end is fixedly connected with the curled containing part, the flexible display module free end is fixedly connected with the stretching part, the flexible display module can be curled and contained in the curled containing part, and the flexible display module free end can move under the driving of the stretching part;
the flexible display module comprises a curling storage part, a tension limiting part and a control part, wherein the curling storage part is arranged on the flexible display module, the tension limiting part is arranged on the curling storage part, when the stretching part receives a first acting force far away from the curling storage part and the length of the flexible display module extending out of the curling storage part is within a preset range, the tension limiting part provides a second acting force opposite to the first acting force to the flexible display module.
In one embodiment, the curling accommodating portion comprises a shell, an accommodating cavity and a curling rotating shaft, at least one end of the curling rotating shaft is fixedly connected to the shell, and the accommodating cavity is located between the shell and the curling rotating shaft.
In one embodiment, the curled end of the flexible display module is fixedly connected with the curling rotating shaft, and the flexible display module can be curled and wound on the curling rotating shaft by taking the curling rotating shaft as an axis.
In one embodiment, the housing further comprises a receiving opening, the extending direction of the receiving opening is parallel to the extending direction of the curling rotating shaft, and the flexible display module can extend out of the curling receiving portion through the receiving opening.
In one embodiment, the flexible display module comprises a flexible display panel and a support plate, wherein the flexible display panel and the support plate are arranged in a stacked manner, the support plate is arranged on one side away from the light emitting surface of the display panel, and the rigidity of the support plate is greater than that of the display panel.
In one embodiment, the support plate comprises a cover region and an edge region immediately adjacent to the cover region, and the orthographic projection of the flexible display panel on the support plate is entirely located at the cover region.
In one embodiment, the tension limiting part includes a pressing block disposed on the housing, and a pressing surface of the pressing block faces a side of the supporting plate close to the flexible display panel, and the pressing block is disposed opposite to the edge region.
In one embodiment, when the stretching portion receives a first acting force far away from the curling storage portion and the length of the flexible display module extending out of the curling storage portion is within a preset range, the pressing block is in contact with the supporting plate and generates pressure, and the pressing block applies a second acting force opposite to the first acting force to the supporting plate, wherein the second acting force is a friction force.
In one embodiment, the control unit is disposed at the curling receiving portion, and the control unit adjusts the magnitude of the pressure applied to the supporting plate by the pressing block according to the rotation angle of the curling rotating shaft.
In one embodiment, when the flexible display module is completely rolled and stored in the rolling storage part, the rotation angle of the rolling rotating shaft is 0 degree, and when the flexible display module gradually extends out of the rolling storage part, the rotation angle of the rolling rotating shaft gradually increases;
the pressure applied to the support plate by the pressing block is maximum when the rotation angle of the curling rotating shaft is 0 degree, the magnitude of the pressure applied to the support plate by the pressing block is in negative correlation with the rotation angle of the curling rotating shaft within a preset rotation angle range, and the pressing block does not apply pressure to the support plate outside the preset rotation angle range.
The flexible display device comprises a curling storage part, a stretching part, a flexible display module and a tension limiting part, wherein the flexible display module comprises a flexible display module curling end and a flexible display module free end which are oppositely arranged, the flexible display module curling end is fixedly connected with the curling storage part, the flexible display module free end is fixedly connected with the stretching part, the flexible display module can be curled and stored in the curling storage part, and the flexible display module free end can move under the driving of the stretching part; the tensile force limiting portion is arranged on the curling accommodating portion, when the stretching portion receives a first acting force far away from the curling accommodating portion and the length of the flexible display module extending out of the curling accommodating portion is within a preset range, the tensile force limiting portion provides a second acting force opposite to the first acting force direction for the flexible display module. Through setting up pulling force restriction portion, make flexible display module assembly is stretching out in the certain length range of curling storage portion, tensile portion is when receiving the effect, and pulling force restriction portion can simultaneously to flexible display module assembly provides a reverse effort, makes the total effort that flexible display module assembly received keeps in the certain limit, avoids flexible display module assembly is because receiving great effort and is in motion under the higher acceleration state, has avoided flexible display module assembly tears etc. unusually, has improved flexible display device's reliability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Fig. 1 is a schematic view of a flexible display device according to an embodiment of the present application;
fig. 2 is a schematic top view illustrating a flexible display module of a flexible display device according to another embodiment of the present disclosure;
fig. 3 is a schematic view of a flexible display device according to another embodiment of the present application.
Description of reference numerals:
a flexible display device 100;
a flexible display module 10; a flexible display module curled end 11; a flexible display module free end 12; a flexible display panel 13; a support plate 14; a coverage area 141; edge region 142
A curl accommodating portion 20; a curling rotary shaft 21; a housing 22; a housing chamber 23; a receiving opening 221;
a stretching section (30);
a tension restricting section 40; pressing block 41
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and "the" and similar referents in the description and the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "plurality" includes two, and is equivalent to at least two. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The following describes the display panel and the display device in the embodiments of the present application in detail with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.
The present embodiment provides a flexible display device 100. Referring to fig. 1, the flexible display device 100 includes a curling receiving portion 20, a stretching portion 30, a flexible display module 10 and a tension limiting portion 40. The flexible display module 10 comprises a flexible display module curling end 11 and a flexible display module free end 12 which are oppositely arranged, the curling end of the flexible display module 10 is fixedly connected with the curling storage part 20, the flexible display module free end 12 is fixedly connected with the stretching part 30, the flexible display module 10 can be curled and stored in the curling storage part 20, and the flexible display module free end 12 can be driven by the stretching part 30 to move. The pulling force limiting portion 40 is disposed on the curling accommodating portion 20, and when the stretching portion 30 receives a first acting force far away from the curling accommodating portion 20 and the length of the flexible display module 10 extending out of the curling accommodating portion 20 is within a preset range, the pulling force limiting portion 40 provides a second acting force opposite to the first acting force to the flexible display module 10.
This embodiment is through setting up pulling force restriction portion 40, makes flexible display module assembly 10 is stretching out in the certain length range of curling storage portion 20, tensile portion 30 is when receiving the effect, and pulling force restriction portion 40 can simultaneously to flexible display module assembly 10 provides a reverse effort, makes total effort that flexible display module assembly 10 received keeps in the certain limit, avoids flexible display module assembly 10 is in motion under the higher acceleration state owing to receive great effort, has avoided the violent sudden change of flexible display module assembly 10 motion state, and then has avoided flexible display module assembly 10 tears unusual such as, has improved flexible display device 100's reliability.
In another embodiment, with reference to fig. 1, the curling receptacle 20 includes a housing 22, a receptacle 23, and a curling spindle 21, at least one end of the curling spindle 21 is fixedly connected to the housing 22, and the receptacle 23 is located between the housing 22 and the curling spindle 21. The flexible display module is characterized in that the curled end 11 of the flexible display module is fixedly connected with the curled rotating shaft 21, and the flexible display module 10 can be curled and wound on the curled rotating shaft 21 by taking the curled rotating shaft 21 as an axis. The housing 22 further includes a receiving opening 221, a stretching direction of the receiving opening 221 is parallel to a stretching direction of the curling rotating shaft 21, and the flexible display module 10 can stretch out of the curling receiving portion 20 through the receiving opening 221. The crimping spindle 21 is rotatable along its own internal axis. The curling accommodating portion 20 further includes a driving assembly, the driving assembly may be an elastic deformation structure, such as a spring, or a driving motor, and the driving assembly is connected to the curling rotating shaft 21 and can provide a rotational driving force or a rotational resistance force to the curling rotating shaft 21.
In another embodiment, referring to fig. 1, the stretching portion 30 is connected and fixed to the free end 12 of the flexible display module, and can drive the free end 12 of the flexible display module to move. Specifically, a pulling force may be applied to the stretching end by a user, and after the stretching end receives the pulling force applied by the user, the free end 12 of the flexible display module is driven to move in a direction away from the curling accommodating portion 20, so that the flexible display module 10 is in an unfolded state to display. A test machine may apply a force to the stretching portion 30.
In another embodiment, please continue to refer to fig. 1, the flexible display module 10 includes a flexible display panel 13. The flexible display panel 13 may be an AMOLED display panel, and a substrate of the flexible display panel 13 is made of a flexible material. Including the oppositely disposed curled end of the flexible display panel 13 and the free end of the flexible display panel 13. The flexible display panel 13 can be rolled and stored in the rolled storage portion 20, the flexible display panel 13 includes a display area and a non-display area, the display area and a part of the non-display area can extend out of the rolled storage portion 20, when the display area extends out of the rolled storage portion 20, the display area can display according to the user's requirement, and when the display area is rolled and stored in the rolled storage portion 20, the display area is in a non-display state.
Referring to fig. 1 and fig. 2, the flexible display module 10 further includes a supporting plate 14, the flexible display panel 13 and the supporting plate 14 are stacked, and the supporting plate 14 is disposed on a side away from the light emitting surface of the display panel. The support plate 14 has a rigidity greater than that of the display panel. The support plate 14 can be rolled and received in the roll receiving portion 20 along with the flexible display panel 13. When the flexible display module 10 is in a state of extending out of the curling accommodating portion 20, the supporting plate 14 has a supporting effect on the flexible display panel 13, and can resist deformation of the flexible display panel due to factors such as gravity, so that the flexible display module 10 can maintain a certain stiffness as a whole. The material of the supporting plate 14 may be foam, metal, etc.
With continuing reference to fig. 1 and fig. 2, the supporting board 14 includes a covering area 141 and an edge area 142 adjacent to the covering area 141, and the orthographic projection of the flexible display panel 13 on the supporting board 14 is entirely located on the covering area 141. Specifically, the edge region 142 is disposed around the coverage area 141. Further, the support plate 14 and the flexible display panel 13 are both rectangular, the coverage area 141 of the support plate 14 is rectangular, the area and the shape of the coverage area 141 of the support plate 14 are the same as those of the flexible display panel 13, the edge region 142 of the support plate 14 is rectangular frame-shaped, and includes two sets of opposite sides which are oppositely arranged, wherein two sides of the first set of opposite sides are respectively connected and fixed with the curling storage portion 20 and the stretching portion 30, and the second set of opposite sides are unfolded or curled under the driving of the stretching portion 30.
In another embodiment, with continued reference to fig. 1 and fig. 2, the tension limiting portion 40 includes a pressing block 41, the pressing block 41 is disposed on the housing 22, a pressing surface of the pressing block 41 faces a side of the supporting plate 14 close to the flexible display panel 13, and the pressing block 41 is disposed opposite to the edge region 142. Specifically, the number of the pressing blocks 41 is two, and the pressing blocks 41 are respectively disposed opposite to two sides of the second group of opposite sides of the edge region 142 of the supporting plate 14. Further, the orthographic projections of the two pressing blocks 41 on the supporting plate 14 are respectively located on two sides of the second set of opposite sides of the edge region 142.
With reference to fig. 1 to fig. 3, when the stretching portion 30 receives a first acting force far away from the curling accommodating portion 20 and the length of the flexible display module 10 extending out of the curling accommodating portion 20 is within a preset range, the pressing block 41 contacts the supporting plate 14 and generates a pressure, and the pressing block 41 applies a second acting force opposite to the first acting force to the supporting plate 14, where the second acting force is a friction force. Specifically, the preset range is 0-0.5L, where L is the maximum length of the flexible display panel 13 that can extend out of the curling storage portion 20.
With continued reference to fig. 1 to fig. 3, the flexible display device 100 further includes a control unit disposed in the curling receptacle 20, and the control unit adjusts the pressure applied by the pressing block 41 on the supporting plate 14 according to the rotation angle of the curling rotating shaft 21. When the flexible display module 10 is completely rolled and stored in the rolled storage portion 20, the rotation angle of the rolling shaft 21 is 0 degree, and when the flexible display module 10 gradually extends out of the rolled storage portion 20, the rotation angle of the rolling shaft 21 gradually increases; the pressure applied to the support plate 14 by the pressing block 41 is maximum when the rotation angle of the curling rotation shaft 21 is 0 degrees, and the magnitude of the pressure applied to the support plate 14 by the pressing block 41 is inversely related to the rotation angle of the curling rotation shaft 21 within a preset rotation angle range, and the pressing block 41 does not apply pressure to the support plate 14 outside the preset rotation angle range. Specifically, referring to fig. 3, a state i is a state where the flexible display panel 13 just extends out of the curling accommodating portion 20 along the first direction, where the rotation angle of the curling rotating shaft 21 is θ 1, and the pressure applied by the corresponding pressing block 41 to the supporting plate 14 is F1; the stretching part 30 continues to move along the first direction from the position shown in the state one, the rotation angle of the curling rotating shaft 21 gradually increases during the movement, the pressure applied to the supporting plate 14 by the corresponding pressing block 41 gradually decreases, when the state two is reached, the rotation angle of the curling rotating shaft 21 is theta 2, the pressure applied to the supporting plate 14 by the corresponding pressing block 41 is F2, the theta 2 is greater than theta 1, and the F2 is less than F1; the stretching part 30 continues to move along the first direction from the position shown in the second state, the rotation angle of the curling rotating shaft 21 continues to gradually increase in the moving process, the pressure applied to the supporting plate 14 by the corresponding pressing block 41 continues to gradually decrease, when the state reaches the third state, the length of the flexible display module 10 extending out of the curling accommodating part 20 reaches a preset threshold value, the pressure F3 applied to the supporting plate 14 by the pressing block 41 is 0, and the theta 3 is greater than theta 2; the stretching unit 30 continues to move in the first direction from the position shown in state three, the rotation angle of the curling rotating shaft 21 gradually increases during the movement, and the pressure applied to the supporting plate 14 by the corresponding pressing block 41 is always kept at 0.
In the initial period of time when the flexible display panel is switched from the rolled-up and stored state to the extended and unfolded state, the form and the motion state of the flexible display panel 13 are changed drastically, and at this time, the motion in a large acceleration state is likely to cause an abnormal situation such as tearing of the flexible display panel. In the present embodiment, the pressing block 41 is disposed such that the pressing block 41 applies pressure to the supporting plate 14 when the flexible display module 10 extends out of the curl accommodating portion 20 by a certain length. When the stretching portion 30 receives a pulling force, the pressing block 41 simultaneously applies a friction force opposite to the pulling force direction to the supporting plate 14, so that the total acting force received by the flexible display module 10 is kept within a certain range, the flexible display panel 13 is prevented from moving under a high acceleration state due to a large acting force, abnormalities such as tearing of the flexible display panel 13 are avoided, and the reliability of the flexible display device 100 is improved. Since the friction force directly acts on the supporting plate 14 and does not directly act on the flexible display panel 13, the supporting plate 14 plays a role of supporting the flexible display panel 13 and protecting the flexible display panel 13.
Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.
Claims (8)
1. A flexible display device, comprising:
the curling and accommodating part comprises a shell, an accommodating cavity and a curling rotating shaft, wherein at least one end of the curling rotating shaft is fixedly connected to the shell, and the accommodating cavity is positioned between the shell and the curling rotating shaft;
a stretching section;
the flexible display module comprises a flexible display module curled end and a flexible display module free end which are arranged oppositely, the flexible display module curled end is fixedly connected with the curled containing part, the flexible display module free end is fixedly connected with the stretching part, the flexible display module can be curled and contained in the curled containing part, and the flexible display module free end can move under the driving of the stretching part; the flexible display panel and the support plate are arranged in a laminated mode, and the support plate is arranged on one side, away from the light emitting surface of the display panel;
the tensile force limiting part is arranged on the curling accommodating part and comprises a pressing block, the pressing block is arranged on the shell, the pressing surface of the pressing block faces to one side, close to the flexible display panel, of the supporting plate, a first acting force far away from the curling accommodating part is applied to the stretching part, when the length of the flexible display module extending out of the curling accommodating part is within a preset range, the pressing block is in contact with the supporting plate and generates pressure, and the pressing block applies a second acting force opposite to the first acting force to the supporting plate;
and the control unit is arranged in the curling accommodating part and adjusts the pressure applied to the supporting plate by the pressing block according to the rotation angle of the curling rotating shaft.
2. The flexible display device according to claim 1, wherein the curled end of the flexible display module is fixedly connected to the curling spindle, and the flexible display module can be curled and wound around the curling spindle by taking the curling spindle as an axis.
3. The flexible display device according to claim 1, wherein the housing further comprises a receiving opening, a direction of extension of the receiving opening is parallel to a direction of extension of the curling rotating shaft, and the flexible display module can extend out of the curling receiving portion through the receiving opening.
4. The flexible display device of claim 1, wherein the support plate has a stiffness greater than a stiffness of the display panel.
5. The flexible display device of claim 4, wherein the support plate comprises a cover region and an edge region immediately adjacent to the cover region, and wherein the orthographic projection of the flexible display panel on the support plate is entirely located at the cover region.
6. The flexible display device of claim 5, wherein the pressing block is disposed opposite the edge region.
7. The flexible display device of claim 6, wherein the second force is a friction force.
8. Flexible display device according to claim 7,
when the flexible display module is completely coiled and accommodated in the coiling accommodating part, the rotation angle of the coiling rotating shaft is 0 degree, and when the flexible display module gradually extends out of the coiling accommodating part, the rotation angle of the coiling rotating shaft is gradually increased;
the pressure applied to the support plate by the pressing block is maximum when the rotation angle of the curling rotating shaft is 0 degree, the magnitude of the pressure applied to the support plate by the pressing block is in negative correlation with the rotation angle of the curling rotating shaft within a preset rotation angle range, and the pressing block does not apply pressure to the support plate outside the preset rotation angle range.
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CN202010505617.4A CN111667760B (en) | 2020-06-05 | 2020-06-05 | Flexible display device |
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CN202010505617.4A CN111667760B (en) | 2020-06-05 | 2020-06-05 | Flexible display device |
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CN112767840B (en) * | 2021-01-29 | 2023-01-20 | 昆山国显光电有限公司 | Display module and display device |
CN112164319A (en) * | 2020-10-14 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Reel and rollable display device |
CN112599022A (en) * | 2021-01-06 | 2021-04-02 | 武汉华星光电半导体显示技术有限公司 | Display device |
CN113516919B (en) * | 2021-07-27 | 2023-04-18 | 京东方科技集团股份有限公司 | Flexible supporting assembly and flexible display device |
CN114582245B (en) * | 2022-04-25 | 2023-06-02 | 武汉天马微电子有限公司 | Control method of rollable display panel, winding assembly and rollable display device |
CN115019651B (en) * | 2022-06-20 | 2023-05-23 | 昆山国显光电有限公司 | Crimping display module and production process thereof |
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