Search

CN-118887874-B - Support plate, flexible display module and electronic equipment

CN118887874BCN 118887874 BCN118887874 BCN 118887874BCN-118887874-B

Abstract

The application provides a support plate, a flexible display module and electronic equipment. The support plate comprises at least one support layer, wherein the support layer is provided with a first surface and a second surface which are opposite in the thickness direction of the support layer, carbon fiber substances are arranged in each support layer, and the distance between the carbon fiber substances and the first surface and the second surface of the support layer is 0.5-2 microns in the thickness direction of the support layer. The supporting plate is light in weight, reduces the resistance of the supporting plate, meets the conductive requirement of the supporting plate, and further effectively solves the problem that the flexible display module is abnormal in display caused by an electric field or static electricity when the electric field reliability test is carried out on the flexible display module or the flexible display module generates static electricity when the supporting plate is applied to the flexible display module.

Inventors

  • XU GUSHENG
  • AI XIAODONG
  • XU CUI

Assignees

  • 合肥维信诺科技有限公司

Dates

Publication Date
20260508
Application Date
20240731

Claims (15)

  1. 1. The support plate is applied to the flexible display module and is characterized by comprising at least one support layer, a first support layer and a second support layer, wherein the support layer is provided with a first surface and a second surface which are opposite in the thickness direction of the support layer; Carbon fiber substances are arranged in each supporting layer, and the distance between the carbon fiber substances and the first surface and the second surface of the supporting layer is 0.5-2 microns along the thickness direction of the supporting layer; the carbon fiber substance comprises a plurality of carbon fiber filaments, the extending direction of each carbon fiber filament is perpendicular to the thickness direction of the supporting plate, and every two carbon fiber filaments in the plurality of carbon fiber filaments are parallel to each other.
  2. 2. The support plate of claim 1, wherein a distance between each adjacent two of the carbon fiber filaments is 0.5-2 microns.
  3. 3. The support plate of claim 2, wherein the material of the support layer comprises an adhesive material for adhesively securing the plurality of carbon fiber filaments.
  4. 4. The support plate according to claim 2, characterized in that the support plate comprises a plurality of support layers stacked in order, and the carbon fiber filaments in at least two of the plurality of support layers differ in extending direction.
  5. 5. The support plate of claim 4, wherein the carbon fiber filaments in at least two of the plurality of support layers extend in directions perpendicular to each other.
  6. 6. The support plate of claim 5, wherein the carbon fiber filaments in each adjacent two of the support layers extend in directions perpendicular to each other.
  7. 7. The support plate of claim 4, wherein the support plate comprises a first support layer, a second support layer, and a third support layer laminated in sequence; the extending direction of the carbon fiber filaments in the first supporting layer is the same as the extending direction of the carbon fiber filaments in the third supporting layer; the extending direction of the carbon fiber filaments in the first supporting layer is perpendicular to the extending direction of the carbon fiber filaments in the second supporting layer.
  8. 8. The support plate of claim 7, wherein the first support layer and the third support layer have a thickness of 25um-35um; The thickness of the second supporting layer is 80um-100um.
  9. 9. The support plate of claim 2, wherein the carbon fiber filaments have a cross-sectional area of 28um to 50um; the carbon fiber filaments are cylindrical, and the diameter of the cylindrical carbon fiber filaments is 6-8 um.
  10. 10. The support plate according to any one of claims 1-9, wherein the at least one support layer comprises a first portion, a bent portion and a second portion connected in sequence along a first direction; the first direction is perpendicular to the thickness direction of the supporting layer; The support plate further comprises a first conductive film layer arranged on the first surfaces of the first part and the second part; a second conductive film layer disposed on the second surfaces of the first portion and the second portion; the third conductive film layer comprises a first conductive part which is arranged on at least one side surface of the bending part along the second direction and extends from the first surface to the second surface of the bending part along the thickness direction of the supporting layer; wherein the second direction is perpendicular to both the first direction and the thickness direction of the support layer.
  11. 11. The support plate of claim 10, wherein the first, second, and third conductive film layers have a thickness of 1-3 microns.
  12. 12. The support plate of claim 10, wherein the first conductive portion is connected to the first conductive film layer and the second conductive film layer on upper and lower surfaces of the first portion and the second portion, respectively; Or, the third conductive film layer further includes a second conductive portion disposed on at least one side of the first portion and the second portion along the second direction, and respectively connected to the first conductive film layer and the second conductive film layer on the upper and lower surfaces of the first portion and the second portion, so as to communicate the first conductive film layer and the second conductive film layer on the upper and lower surfaces of the first portion and the second portion.
  13. 13. The support plate according to any one of claims 1-9, wherein the tensile strength of the support plate is not less than 700Mpa; the elastic modulus of the supporting plate is not less than 70Gpa.
  14. 14. The flexible display module is characterized by comprising a flexible display screen, a first display module and a second display module, wherein the flexible display screen is provided with a display surface and a non-display surface which are opposite; The support plate is arranged on one side of the flexible display screen where the non-display surface is located and is used for supporting the flexible display screen; the support plate is a support plate according to any one of claims 1-13.
  15. 15. An electronic device comprising the flexible display module of claim 14.

Description

Support plate, flexible display module and electronic equipment Technical Field The invention relates to the technical field of display, in particular to a support plate, a flexible display module and electronic equipment. Background The flexible display module assembly includes flexible display screen and backup pad. Because the steel sheet has good bending property and conductivity, the flexible display module is usually supported and fixed by the steel sheet, and the flexible display screen is conveniently grounded. However, the density of the steel sheet is too high, so that the weight of the steel sheet is too high and the proportion of the steel sheet to the weight of the flexible display module is too high. In the related art, a carbon fiber support plate is used instead of the conventional metal support sheet. However, the carbon fiber support plate has poor conductivity, and there is a problem that the reliability of an electric field or electrostatic effect of the flexible display module causes abnormal display. Disclosure of Invention The application provides a support plate, a flexible display module and electronic equipment, and aims to solve the problems that the carbon fiber support plate is poor in conductivity and abnormal in display caused by the reliability of an electric field or electrostatic effect of the flexible display module. In order to solve the technical problems, the technical scheme includes that the support plate is applied to a flexible display module and comprises at least one support layer, wherein the support layer is provided with a first surface and a second surface which are opposite to each other along the thickness direction of the support layer, carbon fiber substances are arranged in each support layer, and the distance between the carbon fiber substances and the first surface and the second surface of the support layer is 0.5-2 microns along the thickness direction of the support layer. In one embodiment of the present application, the carbon fiber substance includes a plurality of carbon fiber filaments, an extension direction of each carbon fiber filament is perpendicular to a thickness direction of the support plate, and each two carbon fiber filaments in the plurality of carbon fiber filaments are parallel to each other; Preferably, the distance between every two adjacent carbon fiber filaments is 0.5-2 microns; preferably, the material of the supporting layer includes an adhesive material, and the adhesive material is used for adhering and fixing the carbon fiber filaments. In one embodiment of the present application, the support plate includes a plurality of support layers stacked in order, and the extending directions of the carbon fiber filaments in at least two of the plurality of support layers are different; preferably, the extending directions of the carbon fiber filaments in at least two layers of the supporting layers are mutually perpendicular; Preferably, the extending directions of the carbon fiber filaments in every two adjacent supporting layers are mutually perpendicular; Preferably, the support plate comprises a first support layer, a second support layer and a third support layer which are sequentially stacked, wherein the extending direction of the carbon fiber wires in the first support layer is the same as the extending direction of the carbon fiber wires in the third support layer; preferably, the thickness of the first support layer and the third support layer is 25um-35um, and the thickness of the second support layer is 80um-100um. In one embodiment of the application, the cross-sectional area of the carbon fiber filaments is 28um 2-50um2; Preferably, the carbon fiber filaments are cylindrical, and the diameter of the cylindrical carbon fiber filaments is 6-8 um. In one embodiment of the application, the at least one supporting layer comprises a first part, a bending part and a second part which are sequentially connected along a first direction, wherein the first direction is perpendicular to the thickness direction of the supporting layer; The support plate further includes: The first conductive film layer is arranged on the first surfaces of the first part and the second part; a second conductive film layer disposed on the second surfaces of the first portion and the second portion; The third conductive film layer comprises a first conductive part, a second conductive part and a third conductive part, wherein the first conductive part is arranged on at least one side surface of the bending part along the second direction and extends from the first surface to the second surface of the bending part along the thickness direction of the supporting layer, and the second direction is perpendicular to the first direction and the thickness direction of the supporting layer; preferably, the thicknesses of the first conductive film layer, the second conductive film layer and the third conductive film layer are 1-3 micrometers. In one embodim