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CN-121982971-A - Middle frame assembly, foldable display module and foldable display equipment

CN121982971ACN 121982971 ACN121982971 ACN 121982971ACN-121982971-A

Abstract

The embodiment of the application discloses a middle frame assembly, a foldable display module and foldable display equipment, relates to the field of folding screens, and aims to reduce antenna loss. In the foldable screen equipment with three or more folds, a baffle is arranged between the antenna and the flexible circuit board and is electrically connected with the middle frame, so that electromagnetic waves projected to the flexible circuit board by the antenna are blocked by the baffle. Or a shielding layer is arranged on the surface of the flexible circuit board and is electrically connected with the middle frame, so that electromagnetic waves projected to the flexible circuit board by the antenna are shielded by the shielding layer. Therefore, after the foldable screen device is folded, electromagnetic wave signals transmitted through the flexible circuit board are blocked, few electromagnetic wave signals can reach a light-emitting layer in the display panel and then are absorbed, and the problem of antenna signal loss is improved.

Inventors

  • WANG LEI
  • ZHA PENG
  • PANG DONG
  • HUANG BO

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260505
Application Date
20240229
Priority Date
20230116

Claims (20)

  1. 1. A foldable display module, comprising: a display panel which is foldable in an S shape; the display panel is connected with one side of the display panel through the flexible circuit board; the middle frame is connected with the display panel, and comprises at least three subframes which are arranged along the preset direction and are sequentially and rotatably connected, wherein the subframe closest to the flexible circuit board in the at least three subframes is a first subframe; the antenna is connected with one end, close to the flexible circuit board, of the first subframe; The baffle is electrically connected with one end of the first subframe, which is close to the flexible circuit board; the first subframe comprises a carrier plate, a gap is formed between the antenna and the carrier plate, and the baffle covers the gap.
  2. 2. The foldable display module of claim 1, wherein the baffle is a mesh structure.
  3. 3. The foldable display module of claim 1, wherein the bezel is closed proximate a surface of the antenna or the bezel is closed proximate a surface of the flexible circuit board.
  4. 4. A foldable display module as claimed in any one of claims 1 to 3 wherein the size of the baffle is greater than the size of the flexible circuit board in the direction of the axis of rotation of the first subframe.
  5. 5. The foldable display module of any one of claims 1-4, wherein the baffle extends from one end of the first subframe to the other end along the rotational axis of the first subframe.
  6. 6. The foldable display module of any one of claims 1-5, wherein the bezel includes a bent portion and a connection portion electrically connected to each other, the connection portion being electrically connected to an end of the first subframe near the flexible circuit board, the bent portion being bent toward the flexible circuit board to surround a surface of the flexible circuit board facing the antenna.
  7. 7. The foldable display module of any one of claims 1-6, wherein the material of the barrier comprises metal.
  8. 8. The foldable display module of any one of claims 1-7, wherein the baffle is soldered to an end of the first subframe adjacent to the flexible circuit board, or The baffle and one end of the first subframe, which is close to the flexible circuit board, are integrally formed.
  9. 9. The foldable display module of any one of claims 1-8, wherein the first subframe further comprises a side plate, the side plate is arranged around the periphery of the carrier plate, one end of the side plate, which is close to the flexible circuit board, and the carrier plate enclose a containing groove, the flexible circuit board is arranged in the containing groove, one end of the baffle plate is electrically connected with one end of the carrier plate, which is close to the flexible circuit board, and the other end of the baffle plate extends towards the side plate.
  10. 10. The foldable display module of claim 9, wherein the first subframe further comprises an insulating member, the insulating member is located in the accommodating groove, the side plate and/or the carrier plate is connected with the insulating member, and the baffle and the antenna are located on two opposite sides of the insulating member, respectively.
  11. 11. The foldable display module of any one of claims 1-10, wherein the bezel is coupled to a surface of the first subframe facing the flexible circuit board.
  12. 12. A foldable display module, the foldable display module comprising: a display panel which is foldable in an S shape; the display panel is connected with one side of the display panel through the flexible circuit board; the middle frame is connected with the display panel, and comprises at least three subframes which are arranged along the preset direction and are sequentially and rotatably connected, wherein the subframe closest to the flexible circuit board in the at least three subframes is a first subframe; an antenna connected to one end of the first subframe near the flexible circuit board, and The shielding layer is connected with the surface of the flexible circuit board and is electrically connected with one end, close to the flexible circuit board, of the first subframe; The projection of the flexible circuit board in the antenna area is at least partially covered by the outer contour of the projection of the shielding layer in the antenna area.
  13. 13. The foldable display module of claim 12, wherein the material of the shielding layer comprises metal.
  14. 14. The foldable display module of claim 13, wherein the shielding layer is electrically connected to an end of the first subframe near the flexible circuit board through conductive adhesive.
  15. 15. A center assembly for connecting an antenna, a flexible circuit board, and a display panel, the center assembly comprising: The display device comprises at least three subframes, at least three display panels, at least one flexible circuit board, at least one first subframe and at least one second subframe, wherein the at least three subframes are connected with the display panels so that the display panels can be folded in an S shape; the baffle is electrically connected with one end, far away from other subframes, of the first subframe; under the condition that the antenna, the flexible circuit board and the display panel are connected to the middle frame, the antenna and the flexible circuit board are respectively located at two opposite sides of the baffle, and the projection of the baffle in the antenna area is at least partially covered by the outer contour of the projection of the baffle in the antenna area.
  16. 16. The mullion assembly of claim 15, wherein the baffle is a mesh structure or the surface of the baffle is closed.
  17. 17. The mullion assembly of claim 15 or 16, wherein the baffle extends from one end of the first subframe to the other end along the direction of the axis of rotation of the first subframe.
  18. 18. The center assembly of any of claims 15-17, wherein the bezel includes a bend portion and a connection portion electrically connected to each other, the connection portion being electrically connected to an end of the first subframe remote from the other subframes, the bend portion being bent toward the flexible circuit board to enclose a surface of the flexible circuit board facing the antenna when the antenna and the display panel are both connected to the center.
  19. 19. The mullion assembly of any one of claims 15-18, wherein the material of the baffle comprises metal.
  20. 20. The assembly of any one of claims 15-19, wherein the baffle is welded in electrical communication with an end of the first subframe remote from the other subframe, or The baffle is integrally formed with one end, far away from other subframes, of the first subframe.

Description

Middle frame assembly, foldable display module and foldable display equipment The present application is a divisional application, the application number of which is 202480002584.8, the application date of which is 2024, 02, 29, and the entire contents of which are incorporated herein by reference. The present application claims priority from the chinese patent application filed on 16 days of 2023, 01, and 2023, filed under the application number 202310104021.7, entitled "middle frame assembly, foldable display module, and foldable display device", the entire contents of which are incorporated herein by reference. Technical Field The embodiment of the application relates to the field of folding screens, in particular to a middle frame assembly, a foldable display module and foldable display equipment. Background As electronic devices develop, the share of large-screen electronic devices in the consumer market increases, and the interest in foldable electronic devices in the market increases, so does the cost of investment in foldable electronic devices by various manufacturers. The electromagnetic environment of the foldable electronic device is very complex, and the complex electromagnetic environment brings great challenges to scientific researchers, for example, how to reduce the signal loss of the multi-fold mobile phone screen becomes a big problem for the scientific researchers. Disclosure of Invention The embodiment of the application provides a middle frame assembly, a foldable display module and foldable display equipment, which are used for solving the problem of antenna signal loss caused by absorbing antenna signals when a display panel is in a folded state. In order to achieve the above purpose, the application adopts the following technical scheme: In a first aspect, a foldable display module is provided, including a display panel, a flexible circuit board, a middle frame, an antenna, and a baffle. The display panel can be folded in an S shape, a middle frame is connected with one side of the display panel, the display panel and the flexible circuit board are arranged along a preset direction, an antenna is connected with the display panel, the middle frame comprises at least three subframes which are arranged along the preset direction and are sequentially and rotatably connected, a subframe closest to the flexible circuit board in the at least three subframes is a first subframe, a baffle is connected with one end of the first subframe, which is close to the flexible circuit board, and is electrically connected with one end of the first subframe, which is close to the flexible circuit board, wherein the antenna and the flexible circuit board are respectively positioned on two opposite sides of the baffle, and the projection of the antenna area is at least partially covered by the outline of the projection of the baffle on the antenna area. The electromagnetic wave signal projected by the antenna towards the flexible circuit board can penetrate through the flexible circuit board, and after the display panel is folded in an S shape, the electromagnetic wave signal penetrating through the flexible circuit board can be absorbed by the display panel, so that the antenna signal is lost. The baffle can block electromagnetic wave signals projected by the antenna towards the flexible circuit board, weaken electromagnetic wave signals transmitted through the flexible circuit board, reduce signals absorbed by the display panel and effectively improve the loss of the antenna signals. In addition, the baffle is electrically connected with the first subframe, and the baffle can prevent static electricity from being conducted to the display panel through the baffle, so that the problem that the static electricity on one side of the middle frame away from the display panel causes the display panel to be stained is solved. With reference to the first aspect, in some possible implementations, the baffle is a mesh structure. So that the signal of the electromagnetic wave is not projected to the flexible circuit board through the mesh. The weight of the baffle is smaller, and the weight of the foldable display module can be reduced. With reference to the first aspect, in some realizable modes, the baffle is closed close to a surface of the antenna, or the baffle is closed close to a surface of the flexible circuit board. Therefore, the baffle has good blocking effect, and electromagnetic wave signals of the antenna cannot penetrate through the closed surface. With reference to the first aspect, in some achievable manners, along a rotation axis direction of the first subframe, a size of the baffle is larger than a size of the flexible circuit board. Therefore, the baffle can block the signal of the antenna from being projected to the flexible circuit board, electromagnetic wave signals penetrating through the flexible circuit board are reduced, and loss of the antenna signals is reduced. With reference to the fi