CN111739423B - Support film and display module - Google Patents
Support film and display module Download PDFInfo
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- CN111739423B CN111739423B CN202010611690.XA CN202010611690A CN111739423B CN 111739423 B CN111739423 B CN 111739423B CN 202010611690 A CN202010611690 A CN 202010611690A CN 111739423 B CN111739423 B CN 111739423B
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- bending
- support film
- display module
- region
- display panel
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The embodiment of the application provides a support membrane and display module assembly, wherein, this display module assembly includes display panel and support membrane, support the membrane set up in one side of display panel, display module assembly includes first bending zone and is located the axle of buckling in first bending zone, support the membrane in the thickness that first bending zone corresponds part is followed buckle axial both sides reduce gradually. This scheme is through following the thickness that will support the membrane buckle axial both sides and reduce gradually for bending axle department has great radius of buckling, reduces the stress of display panel bending axle department, thereby avoids display panel to show the problem of inefficacy at the in-process of buckling.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a support membrane and display module assembly.
Background
In the conventional flexible display module, in order to prevent the display panel from failing due to random curling or bending, a support film is usually disposed on the display panel. Because the limitation of the ability of buckling of display panel and supporting film itself, when display module assembly was buckled along the axle of buckling, lead to the radius undersize of buckling of axle department of buckling under the fold condition easily, cause the damage to display panel to the problem that the demonstration became invalid appears.
Disclosure of Invention
The embodiment of the application provides a support membrane and display module assembly, can solve when display module assembly is buckled along the axle of buckling, leads to the radius undersize of buckling axle department under the fold condition easily, causes the damage to display panel to the problem that the demonstration became invalid appears.
In a first aspect, embodiments of the present application provide a support film, where the support film includes a first region, and a thickness of a corresponding portion of the support film in the first region is gradually reduced from a central axis of the first region to both sides.
In the support film provided by the embodiment of the application, the support film further includes a second region, the second region is disposed adjacent to the first region, and a thickness of a corresponding portion of the support film in the second region gradually increases toward a direction away from the central axis.
In the support film provided by the embodiment of the application, the support film is symmetrical left and right about the central axis.
In the support membrane provided by the embodiment of the application, the material of the support membrane comprises polyimide, high-elasticity rubber, a polymer film or a steel sheet, and the elastic modulus of the support membrane is 1-10 GPa.
In a second aspect, an embodiment of the present application provides a display module, including a display panel and a support film, the support film is disposed on one side of the display panel, the display module includes a first bending region and a bending shaft located in the first bending region, and the thickness of the support film at a portion corresponding to the first bending region is gradually reduced from the bending shaft to two sides.
In the display module assembly that this application embodiment provided, the display module assembly still includes the second bending zone, the second bending zone with first bending zone is adjacent to be set up, support the membrane in the thickness of the second bending zone correspondence portion is towards the back of the body direction of bending axle is crescent.
In the display module provided by the embodiment of the application, the support film comprises a first area and a second area, the first area of the support film corresponds to the first bending area of the display module, and the second area of the support film corresponds to the second bending area of the display module.
In the display module provided in the embodiment of the present application, a thickness of the support film at a first portion corresponding to the first bending region is inversely proportional to a distance between the first portion and the bending axis, and a thickness of the support film at a second portion corresponding to the second bending region is directly proportional to a distance between the second portion and the bending axis.
In the display module assembly that this application embodiment provided, the support film pass through the optical cement with display panel laminating.
In the display module assembly that this application embodiment provided, display panel includes the play plain noodles, the support film is located display panel deviates from one side of play plain noodles.
By last, the display module assembly that this application embodiment provided includes display panel and support membrane, support the membrane set up in one side of display panel, the display module assembly includes first bending zone and is located the axle of buckling of first bending zone, support the membrane in the thickness of first bending zone correspondence part is followed buckle axial both sides reduce gradually. The thickness that this scheme passes through to support the membrane is followed buckle axial both sides and reduce gradually for bending axle department has great radius of buckling, reduces the stress of display panel bending axle department, thereby avoids display panel to show the problem of inefficacy at the in-process of buckling.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a support film provided in an embodiment of the present application.
Fig. 2 is another schematic structural diagram of a support film provided in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present disclosure.
Fig. 4 is another schematic structural diagram of a display module according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a display module according to an embodiment of the present disclosure.
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 embodiment of the application provides a support film and a display module, which are respectively described in detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a support film according to an embodiment of the present disclosure. The support film 10 includes a first region 11 and a second region 12. Wherein the first region 11 and the second region 12 are arranged adjacently. The thickness of the supporting film 10 at the corresponding portion of the first region 11 is gradually reduced from the central axis 13 of the first region 11 to both sides. The thickness of the support film 10 at the corresponding portion of the second region 12 gradually increases toward the direction away from the central axis 13.
The support film 10 is bilaterally symmetric about the center axis 13. The material of the support membrane 10 includes polyimide, high elastic rubber, polymer film or steel sheet. The elastic modulus of the supporting film is 1-10 Gpa. Preferably, the elastic modulus of the support film is 3.5 Gpa.
In the embodiment of the present application, the edge line of the cross section of the support film 10 may be a broken line as shown in fig. 1 or a curved line as shown in fig. 2.
In the description of the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the described features.
Referring to fig. 3 to 4, fig. 3 and 4 are schematic structural diagrams of a display module according to an embodiment of the present disclosure. The display module 100 includes a support film 10 and a display panel 20. The support film 10 is disposed on one side of the display panel 20.
The support film 10 is attached to the display panel 20 by an Optical Clear Adhesive (OCA).
The display module 100 includes a first bending region 101, a second bending region 102, and a bending axis 103 located in the first bending region 101. The first bending region 101 is disposed adjacent to the second bending region 102.
The thickness of the support film 10 at the corresponding portion of the first bending region 101 is gradually reduced from the bending axis to both sides. The thickness of the support film 10 at the corresponding portion of the second bending region 102 gradually increases toward the direction away from the bending axis 103.
The first region of the support film 10 corresponds to the first bending region 101 of the display module 100. The second region of the support film 10 corresponds to the second bending region 102 of the display module 100.
In the embodiment of the present application, the first bending region 101 is located at a middle position of the display module 100. The bending axis 103 is located at the middle of the first bending region 101. It should be noted that the positions of the first bending region 101 and the bending axis 103 include, but are not limited to, the situation shown in the embodiment of the present application.
In this embodiment, the edge line of the cross section of the support film 10 is a fold line. That is, the thickness of the support film 10 at the first bending region 101 corresponding to the first portion is inversely proportional to the distance between the first portion and the bending axis 103. The thickness of the support film 10 and the second portion of the second bending region 102 is proportional to the distance between the second portion and the bending axis 103. Therefore, the phenomenon that the display panel 20 is damaged due to the fact that the bending radius of the display panel 20 is too small because of the thickness mutation of the local support films of the first bending region 101 and the second bending region 102 when the display module 100 is bent is avoided.
Since the thickness of the support film 10 at the bending axis 103 is greater than the thickness of both sides of the bending axis 103, the support force of the support film 10 at the bending axis 103 is greater than the support force of both sides of the bending axis 103.
Since the thickness of the support film 10 at the first bending region 101 corresponds to the first portion is inversely proportional to the distance between the first portion and the bending axis 103. The thickness of the support film 10 at the second bending region 102 corresponding to the second portion is proportional to the distance between the second portion and the bending axis 103. So that the support film 10 provides a gradually decreasing support force to the portion of the display panel 20 in the first bending region 101 and provides a gradually increasing support force to the portion of the display panel 20 in the second bending region 102. When the display module 100 is in the folded state, the display module 100 may exhibit a water drop state as shown in fig. 5 due to the change of the supporting force of the first bending region 101 and the second bending region 102, further relieving the stress at the bending axis 103, thereby increasing the bending radius thereof. At this time, the bending axis 103 has the largest bending radius.
In the embodiment of the present disclosure, the display panel 20 includes a light emitting surface, and the support film 10 is located on a side of the display panel 20 away from the light emitting surface. Therefore, in the embodiment of the present application, the supporting film 10 does not block the light emitted from the display panel 20, so that the display effect of the display panel 20 is improved.
In view of the above, the display module 100 provided in the embodiment of the present disclosure includes the support film 10 and the display panel 20. The support film 10 is disposed on one side of the display panel 20. The display module 100 includes a first bending region 101, a second bending region 102, and a bending axis 103 disposed in the first bending region 101. The first bending region 101 is disposed adjacent to the second bending region 102. The thickness of the support film 10 at the corresponding portion of the first bending region 101 gradually decreases from the bending axis to both sides. The thickness of the support film 10 at the corresponding portion of the second bending region 102 gradually increases toward the direction away from the bending axis 103.
This scheme is through setting up the thickness change of supporting film 10, make this supporting film 10 provide the holding power that reduces gradually to the partial display panel 20 of first bending zone 101, provide gradually crescent holding power to the partial display panel 20 of second bending zone 102, make when this display module assembly 100 buckles, can present the water droplet state, the stress of buckling axle 103 department has further been alleviated, thereby increase its radius of buckling, the radius of buckling axle 103 department under the display module assembly 100 fold condition has been avoided undersize, cause the damage to display panel 20, thereby the problem of display failure appears.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The support film and the display module provided by the embodiment of the application are described in detail, a specific example is applied to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the application; 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 (4)
1. A display module is characterized by comprising a display panel and a support film, wherein the support film is arranged on one side of the display panel and comprises a first bending area and a bending shaft positioned in the first bending area, and the thickness of the support film at the part corresponding to the first bending area is gradually reduced from the bending shaft to two sides;
the display module further comprises a second bending area, the second bending area is arranged adjacent to the first bending area, and the thickness of the support film at the part corresponding to the second bending area is gradually increased towards the direction back to the bending shaft;
The thickness of the first portion of the support film corresponding to the first bending region is inversely proportional to the distance between the first portion and the bending axis, and the thickness of the second portion of the support film corresponding to the second bending region is directly proportional to the distance between the second portion and the bending axis.
2. The display module of claim 1, wherein the support film comprises a first region and a second region, the first region of the support film corresponds to the first inflection region of the display module, and the second region of the support film corresponds to the second inflection region of the display module.
3. The display module according to claim 1 or 2, wherein the support film is attached to the display panel by an optical adhesive.
4. The display module as claimed in claim 1 or 2, wherein the display panel comprises a light-emitting surface, and the support film is disposed on a side of the display panel away from the light-emitting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010611690.XA CN111739423B (en) | 2020-06-30 | 2020-06-30 | Support film and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010611690.XA CN111739423B (en) | 2020-06-30 | 2020-06-30 | Support film and display module |
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| CN111739423A CN111739423A (en) | 2020-10-02 |
| CN111739423B true CN111739423B (en) | 2022-05-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112116875A (en) | 2020-10-13 | 2020-12-22 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| CN113284422B (en) * | 2021-06-10 | 2023-07-25 | 维沃移动通信有限公司 | Electronic equipment |
| CN114038338B (en) * | 2021-12-09 | 2024-03-19 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| US10245776B2 (en) * | 2011-09-30 | 2019-04-02 | Apple Inc. | Methods for forming electronic devices with bent display edges |
| KR102176719B1 (en) * | 2013-10-14 | 2020-11-10 | 삼성디스플레이 주식회사 | Flexible display panel and manufacturing method thereof |
| KR102290479B1 (en) * | 2014-08-13 | 2021-08-18 | 삼성디스플레이 주식회사 | Display Device |
| KR102320143B1 (en) * | 2015-02-13 | 2021-11-02 | 삼성디스플레이 주식회사 | Display device |
| KR102541453B1 (en) * | 2015-08-31 | 2023-06-09 | 삼성디스플레이 주식회사 | Flexible display apparatus |
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| KR102628024B1 (en) * | 2016-10-07 | 2024-01-22 | 삼성디스플레이 주식회사 | Foldable display device |
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| CN107565018B (en) * | 2017-09-19 | 2021-04-13 | 京东方科技集团股份有限公司 | OLED display back plate and preparation method thereof |
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| CN109830183B (en) * | 2019-02-21 | 2021-06-18 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN110058444B (en) * | 2019-05-08 | 2022-04-12 | 武汉天马微电子有限公司 | Display module and display device |
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| CN111128030B (en) * | 2020-01-02 | 2021-11-19 | 武汉天马微电子有限公司 | Display module and display device |
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