CN-121999689-A - Display device and manufacturing method thereof

CN121999689ACN 121999689 ACN121999689 ACN 121999689ACN-121999689-A

Abstract

The invention provides a display device and a manufacturing method thereof, wherein the display device comprises a display panel, a driving chip, a flexible circuit board, an electromagnetic shielding structure and an electromagnetic shielding structure, wherein the display panel comprises a display area, a bending area and a binding area bent to the back surface of the display area, the driving chip is in binding connection with the display panel at one side of the binding area far away from the display area, the flexible circuit board is positioned at the back surface of the display area and at one side of the driving chip far away from the bending area and in binding connection with the binding area, the electromagnetic shielding structure is cured resin and doped with metal particles, the electromagnetic shielding structure completely covers one side surface of the bending area far away from the display area along a first direction, one side surface of the driving chip far away from the display area along a second direction, and at least part of the area of one side surface of the driving chip far away from the display area along the second direction, and the first direction and the second direction are intersected.

Inventors

LIU CHANGBO
HUANG JIANBANG
HE LINCHANG
LI LIN
ZHANG LIN
Gan Yushu
PENG BO

Assignees

京东方科技集团股份有限公司
成都京东方光电科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260313

Claims (10)

1.A display device, comprising: the display panel comprises a display area, a bending area and a binding area bent to the back of the display area; The driving chip is in binding connection with the display panel at one side of the binding area far away from the display area; The flexible circuit board is positioned on the back surface of the display area, is positioned on one side of the driving chip far away from the bending area and is in binding connection with the binding area; The electromagnetic shielding structure is solidified resin and doped with metal particles, the electromagnetic shielding structure completely covers one side surface of the bending area far away from the display area along a first direction, one side surface of the driving chip far away from the display area along a second direction and at least part of area of one side surface of the flexible circuit board far away from the display area along the second direction, and the first direction and the second direction are intersected.
2. The display device of claim 1, wherein the electromagnetic shielding structure is disposed in a continuous layer.
3. The display device of claim 2, wherein a copper exposure area is provided on a surface of the flexible circuit board along the second direction away from the display area, and the copper exposure area is connected to the electromagnetic shielding structure and is grounded.
4. The display device of any one of claims 1-3, further comprising a back film on a back side of the display panel, wherein an orthographic projection of a side of the back film adjacent to the inflection region on the display region overlaps an orthographic projection of a side of the electromagnetic shield structure adjacent to the display region on the display region.
5. The display device according to any one of claims 1 to 3, wherein the metal particles comprise at least one of silver, copper, and nickel, and the resin comprises at least one of polyethylene, polystyrene, polypropylene, and acrylonitrile-butadiene-styrene copolymer.
6. A display device as claimed in any one of claims 1 to 3, characterized in that the flexible circuit board comprises a shielding film, the electromagnetic shielding structure being clear of the shielding film or the shielding film being completely covered by the electromagnetic shielding structure.
7. A display device as claimed in any one of claims 1 to 3, further comprising a protective glue on a side of the bending region remote from the display region in the first direction, and the electromagnetic shielding structure completely encloses the protective glue.
8. A display device as claimed in any one of claims 1 to 3, wherein the sheet resistance range of the electromagnetic shielding structure is ~ 。
9. A display device as claimed in any one of claims 1 to 3, characterized in that the electromagnetic shielding structure has a thickness in the range of 20 μm to 25 μm.
10. A method of manufacturing a display device according to any one of claims 1 to 9, comprising: The driving chip is connected with the display panel in a binding way through the binding area; binding and connecting the flexible circuit board and the display panel; bending the binding area to the back surface of the display area through the bending area; coating liquid formed by mixing metal particles, resin materials and volatile agents on one side surface of the bending area far away from the display area along the first direction, one side surface of the driving chip far away from the display area along the second direction, and one side surface of the flexible circuit board far away from the display area along the second direction; The liquid is cured to form cured resin, the electromagnetic shielding structure with the required pattern is obtained, the metal particles are doped in the cured resin, the electromagnetic shielding structure completely covers the surface of one side of the bending area far away from the display area along the first direction, the driving chip is far away from the surface of one side of the display area along the second direction, and the flexible circuit board is far away from at least part of the area of one side of the display area along the second direction.

Description

Display device and manufacturing method thereof Technical Field The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof. Background With the improvement of smart phone user experience demands, the aggravation of market competition and the rapid iteration of technology, narrow-frame design has become a mainstream trend. The narrow frame design is mainly through reducing the non-display area at screen edge, is showing to promote the screen and accounts for the ratio, and then brings better visual experience. However, the narrow bezel design brings new technical problems while increasing the screen duty cycle. Particularly, the distance between the bending area of the display module and the mobile phone antenna is greatly shortened, and electromagnetic radiation generated in the working process of the display module can cause serious interference to the receiving performance of the mobile phone antenna, so that the communication quality of the smart phone is affected. In this way, how to improve the electromagnetic shielding capability of the display device while considering the design of the narrow frame is an urgent technical problem to be solved. Disclosure of Invention The invention provides a display device and a manufacturing method thereof, which are used for improving the electromagnetic shielding capability of the display device while considering the design of a narrow frame. In a first aspect, an embodiment of the present invention provides a display apparatus, including: the display panel comprises a display area, a bending area and a binding area bent to the back of the display area; The driving chip is in binding connection with the display panel at one side of the binding area far away from the display area; The flexible circuit board is positioned on the back surface of the display area, is positioned on one side of the driving chip far away from the bending area and is in binding connection with the binding area; The electromagnetic shielding structure is solidified resin and doped with metal particles, the electromagnetic shielding structure completely covers one side surface of the bending area far away from the display area along a first direction, one side surface of the driving chip far away from the display area along a second direction and at least part of area of one side surface of the flexible circuit board far away from the display area along the second direction, and the first direction and the second direction are intersected. In one possible implementation, the electromagnetic shielding structure is arranged in a continuous layer. In one possible implementation manner, the flexible circuit board is provided with a copper exposure area along a side surface of the second direction away from the display area, and the copper exposure area is connected with the electromagnetic shielding structure and is grounded. In one possible implementation manner, the display panel further comprises a back film positioned on the back surface of the display panel, wherein an overlapping area exists between the front projection of one side of the back film, which is close to the bending area, on the display area and the front projection of one side of the electromagnetic shielding structure, which is close to the display area, on the display area. In one possible implementation, the metal particles comprise at least one of silver, copper, nickel, and the resin comprises at least one of polyethylene, polystyrene, polypropylene, acrylonitrile-butadiene-styrene copolymer. In one possible implementation, the flexible circuit board includes a shielding film, and the electromagnetic shielding structure is avoided from the shielding film, or the shielding film is completely covered by the electromagnetic shielding structure. In one possible implementation manner, the display device further comprises a protective adhesive located on one side of the bending area away from the display area along the first direction, and the electromagnetic shielding structure completely covers the protective adhesive. In one possible implementation, the square resistance range of the electromagnetic shielding structure is~。 In one possible implementation, the electromagnetic shielding structure has a thickness ranging from 20 μm to 25 μm. In a second aspect, an embodiment of the present invention further provides a method for manufacturing a display device according to any one of the above, including: The driving chip is connected with the display panel in a binding way through the binding area; binding and connecting the flexible circuit board and the display panel; bending the binding area to the back surface of the display area through the bending area; coating liquid formed by mixing metal particles, resin materials and volatile agents on one side surface of the bending area far away from the display area along the first direction, one side surface of th