Display module and display device
By placing the metal support layer close to the display panel and the foam layer away from the display panel in the display module, the problem of uneven deformation caused by the foam layer is solved, achieving both improved display effect and heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2026-04-28
- Publication Date
- 2026-06-09
AI Technical Summary
In existing flexible display modules, the foam layer is too close to the display screen, causing uneven deformation and resulting in an orange peel texture, which affects the display effect.
The metal support layer is placed on the side closer to the display panel, and the foam layer is placed on the side farther away from the display panel. The metal support layer improves the deformation resistance of the display panel, and the foam layer releases the deformation after it is attached, thus preventing the display panel from being subjected to continuous stress.
It effectively avoids the orange peel effect on the display panel, improves the display effect and deformation resistance, and maintains heat dissipation function.
Smart Images
Figure CN122177018A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and more specifically, to a display module and a display device. Background Technology
[0002] Display screens are an important medium for human-computer interaction. With the rapid advancement of information technologies such as artificial intelligence, wearable devices, and smart vehicles, display devices, which serve as information windows, have been required to be flexible, thin, energy-saving, foldable, and ultra-large in size. Organic electroluminescent display technology has emerged as a result.
[0003] OLED (Organic Light-Emitting Diode) features self-illumination, fast response speed, rich color display, low power consumption, and can be used in flexible displays and wearables, gradually entering the public eye. Especially in the mobile phone field, the application of full-screen and foldable display technologies has brought people a better experience, indicating that OLED display technology is gradually becoming a hot topic and focus in the industry. Summary of the Invention
[0004] This application aims to provide a display module and display device to improve the display effect of the display module.
[0005] The first aspect of this application provides a display module, including: Display panel; A cover plate is disposed on the light-emitting side of the display panel; A back film is disposed on the backlight side of the display panel; The display module further includes: A first metal support layer is disposed on the side of the back film facing away from the display panel; A foam layer is disposed on the side of the first metal support layer opposite to the display panel.
[0006] Optionally, the display module further includes: A flexible circuit board is disposed on the side of the foam layer opposite to the display panel, and the flexible circuit board is bonded to the display panel; The flexible circuit board is electrically connected to the first metal support layer.
[0007] Optionally, a connecting hole is provided on the foam layer at the location of the flexible circuit board, and the flexible circuit board and the first metal support layer are connected by conductive adhesive filled in the connecting hole.
[0008] Optionally, an opening area is formed on the foam layer at the location of the flexible circuit board, the flexible circuit board is located within the opening area, and the flexible circuit board is directly connected to the first metal support layer through conductive adhesive.
[0009] Optionally, the display module further includes: A second metal support layer is disposed on the side of the foam layer opposite to the display panel; A flexible circuit board is disposed on the side of the second metal support layer opposite to the display panel, and the flexible circuit board is bonded to the display panel.
[0010] Optionally, the material of the first metal support layer is the same as the material of the second metal support layer.
[0011] Optionally, the thickness of the foam is greater than or equal to 0.08 mm and less than or equal to 0.14 mm.
[0012] Optionally, the thickness of the first metal support layer is greater than or equal to 0.01 mm and less than or equal to 0.05 mm.
[0013] Optionally, the thickness of the second metal support layer is greater than or equal to 0.01 mm and less than or equal to 0.03 mm.
[0014] A second aspect of this application provides a display device, including a display module as provided in the first aspect of this application.
[0015] Beneficial effects: This application provides a display module and display device. The display module includes a display panel, a cover plate, a back film, a first metal support layer, and a foam layer. The cover plate is disposed on the light-emitting side of the display panel, the back film is disposed on the backlight side of the display panel, the first metal support layer is disposed on the side of the back film away from the display panel, and the foam layer is disposed on the side of the first metal support layer away from the display panel. In this way, by placing the first metal support layer on the side close to the display panel, it can improve the display panel's resistance to deformation while playing a heat dissipation role. And by placing the foam layer on the side away from the display panel, the deformation can be released after the foam layer is attached, thereby avoiding continuous stress on the display panel and fundamentally preventing the orange peel texture of the display panel. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a display module according to an embodiment of this application; Figure 2 This is a schematic diagram of another display module structure proposed in an embodiment of this application; Figure 3 This is a schematic diagram of a display module including a second metal support layer according to an embodiment of this application.
[0018] Explanation of reference numerals in the attached drawings: 10, display panel; 20, cover plate; 21, optical adhesive; 30, back film; 40, first metal support layer; 50, foam layer; 60, second metal support layer; 70, polarizer; 80, flexible circuit board; 81, conductive adhesive. Detailed Implementation
[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0020] In current flexible display module designs, foam is typically placed on the side closest to the display screen, while copper foil is placed on the side furthest away. The foam usually consists of a substrate slurry and air bubbles distributed within it. Due to the difference in modulus between the substrate and the air bubbles, they deform differently under the same pressure. The uneven distribution of air bubbles within the foam leads to deformation and uneven stress distribution during bonding. Macroscopically, this results in an uneven orange-peel texture on the copper foil. Furthermore, because the foam is close to the display screen, this uneven deformation also causes deformation of the display layer, resulting in an orange-peel texture on the front of the display screen and affecting the display module's display performance.
[0021] In view of this, this application proposes a display module and display device. The display module includes a display panel, a cover plate, a back film, a first metal support layer, and a foam layer. The cover plate is disposed on the light-emitting side of the display panel, the back film is disposed on the backlight side of the display panel, the first metal support layer is disposed on the side of the back film away from the display panel, and the foam layer is disposed on the side of the first metal support layer away from the display panel. In this way, by placing the first metal support layer on the side close to the display panel, it can improve the display panel's resistance to deformation while playing a heat dissipation role. And by placing the foam layer on the side away from the display panel, the deformation can be released after the foam layer is attached, thereby avoiding continuous stress on the display panel and fundamentally preventing the orange peel texture of the display panel.
[0022] Reference Figure 1 As shown, this application discloses a display module, which includes a display panel 10, a cover plate 20, a back film 30, a first metal support layer 40, and a foam layer 50.
[0023] Specifically, the display panel 10 is a component in the display module that emits light and displays image content. In this embodiment, the display panel 10 can be an active-matrix organic light-emitting diode (ALED). AMOLED (Metal Matrix Organic Light Emitting Diode) display panel or Passive Matrix OLED (Passive Matrix OLED) display panel.
[0024] Reference Figure 1 As shown, the cover plate 20 is disposed on the light-emitting side of the display panel 10. The cover plate 20 can be made of glass and can be connected to the display panel 10 by optical adhesive 21. Before attaching the cover plate 20, a polarizer 70 can be attached to the light-emitting side of the display panel 10 to improve the display effect of the display panel 10.
[0025] Reference Figure 1 As shown, the back film 30 is disposed on the backlight side of the display panel 10. The back film 30 can be made of PET (polyethylene terephthalate) material, and the back film 30 can provide a certain degree of support and protection for the display panel 10. In the embodiment of this application, part of the back film 30 is bent to the backlight side of the display panel 10 along with the bonding area of the display panel 10.
[0026] Reference Figure 1 As shown, the first metal support layer 40 has a back film 30 on the side opposite to the display panel 10, and the foam layer 50 is disposed on the side of the first metal layer opposite to the display panel 10. That is, in this embodiment, the first metal support layer 40 is closer to the display panel 10 than the foam layer 50. By placing the first metal support layer 40 closer to the display panel 10, it can improve the display panel 10's resistance to deformation while also providing heat dissipation. By placing the foam layer 50 relatively further away from the display panel 10, deformation can be released after the foam layer 50 is attached, thereby avoiding continuous stress on the display panel 10 and preventing orange peel texture from appearing on the display panel 10 at the source.
[0027] The first metal support layer 40 may be made of copper, aluminum, or an aluminum alloy, and can be adhered to the backing film 30 with adhesive tape. The thickness of the first metal support layer 40 is greater than or equal to 0.01 mm and less than or equal to 0.05 mm. For example, the thickness of the first metal support layer 40 can be 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, etc. Setting the thickness of the first metal support layer 40 within this range allows it to have good support strength. In a preferred embodiment, the thickness of the first metal support layer 40 is 0.018 mm.
[0028] The foam layer 50 can be fixed to the first metal support layer 40 with adhesive tape. The thickness of the foam layer 50 is greater than or equal to 0.08 mm and less than or equal to 0.14 mm. Exemplarily, the thickness of the foam layer 50 can be 0.08 mm, 0.09 mm, 0.10 mm, 0.12 mm, 0.14 mm, etc. Setting the thickness of the foam layer 50 within this range allows the foam layer 50 to have a protective effect. In a preferred embodiment, the thickness of the foam layer 50 is 0.12 mm.
[0029] Reference Figure 1 As shown in the embodiments of this application, the display module may further include a flexible circuit board 80.
[0030] Specifically, the flexible circuit board 80 is bonded to the bonding end of the display panel 10, and the flexible circuit board 80 is disposed on the side of the foam layer 50 away from the display panel 10. The flexible circuit board 80 and the foam layer 50 are connected by conductive adhesive 81, the thickness of which is typically 0.02mm-0.10mm.
[0031] Meanwhile, the flexible circuit board 80 needs to be electrically connected to the first metal support layer 40 so that the components on the flexible circuit board 80 can be grounded. However, since the foam layer 50 is located on the side of the first metal support layer 40 away from the display panel 10 in this embodiment, the conductive connection between the flexible circuit board 80 and the first metal support layer 40 requires certain optimization of the foam layer 50.
[0032] Reference Figure 1 As shown, in one embodiment, a connecting hole is provided on the foam layer 50 at the location of the flexible circuit board 80. The connecting hole penetrates the foam layer 50, and the flexible circuit board 80 and the first metal support layer 40 can be electrically connected by conductive adhesive 81 filled in the connecting hole.
[0033] Reference Figure 2As shown, in one embodiment, an opening area is formed on the foam layer 50 at the location of the flexible circuit board 80. The flexible circuit board 80 is located within this opening area and is directly connected to the first metal support layer 40 via conductive adhesive 81. In this embodiment, an opening with an area larger than the flexible circuit board 80 is formed on the foam layer 50. That is, this opening directly exposes part of the first metal support layer 40, and then the flexible circuit board 80 is placed within this opening, allowing the flexible circuit board 80 to be electrically connected to the first metal support layer 40. Simultaneously, this structure eliminates the presence of the foam layer 50 at the location of the flexible circuit board 80, thereby reducing the overall thickness of the display module in the area of the flexible circuit board 80.
[0034] Reference Figure 3 As shown, in one embodiment, the display module may further include a second metal support layer 60. The second metal support layer 60 is disposed on the side of the foam layer 50 facing away from the display panel 10. In this embodiment, a flexible circuit board 80 is disposed on the side of the second metal support layer 60 facing away from the display panel 10, and the flexible circuit board 80 is electrically connected to the second metal support layer 60. Thus, the addition of the second metal support layer 60 can also achieve grounding of the flexible circuit board 80, and the addition of the second metal support layer 60 can better improve the support strength of the display module and increase the display panel 10's resistance to deformation.
[0035] The material of the second metal support layer 60 is the same as that of the first metal support layer 40. For example, both the first metal support layer 40 and the second metal support layer 60 can be made of copper. The thickness of the second metal support layer 60 is greater than or equal to 0.01 mm and less than or equal to 0.03 mm. For example, the thickness of the second metal support layer 60 can be 0.1 mm, 0.02 mm, 0.03 mm, etc. Setting the thickness of the second metal support layer 60 within this range can improve support capacity while minimizing the overall thickness of the display module.
[0036] Based on the same inventive concept, embodiments of this application disclose a display device, including any of the display modules described above in the embodiments of this application.
[0037] Specifically, the display device may include computer monitors, televisions, billboards, laser printers with display functions, telephones, mobile phones, personal digital assistants (PDAs), laptops, digital cameras, portable camcorders, viewfinders, vehicles, large walls, theater screens, or stadium signs, etc.
[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0039] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.
[0040] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.
Claims
1. A display module, characterized in that, include: Display panel; A cover plate is disposed on the light-emitting side of the display panel; A back film is disposed on the backlight side of the display panel; The display module further includes: A first metal support layer is disposed on the side of the back film facing away from the display panel; A foam layer is disposed on the side of the first metal support layer opposite to the display panel.
2. The display module according to claim 1, characterized in that, The display module also includes: A flexible circuit board is disposed on the side of the foam layer opposite to the display panel, and the flexible circuit board is bonded to the display panel; The flexible circuit board is electrically connected to the first metal support layer.
3. The display module according to claim 2, characterized in that: A connecting hole is provided on the foam layer at the location of the flexible circuit board, and the flexible circuit board and the first metal support layer are connected by conductive adhesive filled in the connecting hole.
4. The display module according to claim 2, characterized in that: An opening area is formed on the foam layer at the location of the flexible circuit board, the flexible circuit board is located within the opening area, and the flexible circuit board is directly connected to the first metal support layer through conductive adhesive.
5. The display module according to claim 1, characterized in that, The display module also includes: A second metal support layer is disposed on the side of the foam layer opposite to the display panel; A flexible circuit board is disposed on the side of the second metal support layer opposite to the display panel, and the flexible circuit board is bonded to the display panel.
6. The display module according to claim 5, characterized in that: The material of the first metal support layer is the same as that of the second metal support layer.
7. The display module according to claim 1, characterized in that: The thickness of the foam is greater than or equal to 0.08 mm and less than or equal to 0.14 mm.
8. The display module according to claim 1, characterized in that: The thickness of the first metal support layer is greater than or equal to 0.01 mm and less than or equal to 0.05 mm.
9. The display module according to claim 5, characterized in that: The thickness of the second metal support layer is greater than or equal to 0.01 mm and less than or equal to 0.03 mm.
10. A display device, characterized in that, Includes the display module as described in any one of claims 1-9.