Flexible back plate for flexible display

A flexible display and backplane technology, applied in the direction of instruments, chemical instruments and methods, synthetic resin layered products, etc., can solve problems such as poor function, white turbidity, circuit damage, etc. The effect of changing and prolonging the bending life

Active Publication Date: 2013-06-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, for flexible displays, polymer materials such as polyimide (Polyimide) are generally used as the material of the flexible substrate in the flexible display. Using this flexible substrate does not cause plasticity within a few millimeters of curvature radius. Deformation (permanent deformation), however, if it is bent beyond the range of elastic deformation, it will cause permanent deformation, and the deform

Method used

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  • Flexible back plate for flexible display
  • Flexible back plate for flexible display
  • Flexible back plate for flexible display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a flexible backplane for a flexible display includes a structural layer 2 and a laying layer 3. The structural layer adopts a negative Poisson’s ratio honeycomb structure, and the laying layer is evenly tiled in the central plane of the structural layer. The structural layer adopts a shape memory It is made of polymer or its composite material, and the laying layer is made of carbon fiber and its composite material, silicon carbide fiber and its composite material, copper wire, nickel wire or carbon-based nano-paper material, and the laying layer is provided with two electrode leads 4 ;Such as figure 2 As shown, when the two electrodes are energized, the laying layer generates heat, the structural layer is heated to reach the glass transition temperature of the structural layer material, and an external force is applied to the honeycomb structure to achieve the purpose of deforming the honeycomb. After the heating is stopped, the shape of the...

Embodiment 2

[0029] Such as Figure 4-5 As shown, the present embodiment is like embodiment 1, and the negative Poisson's ratio honeycomb structure adopts a chiral honeycomb structure with a negative Poisson's ratio effect, including a plurality of rigid blocks 5 and their connected ligaments 1 evenly spaced from each other. The change depends on the bending of the connecting ligament 1. Each rigid layer block corresponds to the area where the pixel unit in the display function layer of the flexible display is located. The gap between each rigid block can ensure that the flexible display does not bend during the bending process. Collision and extrusion between electronic devices in adjacent blocks occur, so as to ensure that the flexible display can still be displayed normally after being bent many times. And a highly elastic rubber ring can be set on the periphery of the structure layer to protect the structure and users. Furthermore, the honeycomb structure of the flexible display backp...

Embodiment 3

[0031] Such as Figure 6 As shown, the difference between this embodiment and Example 2 is that the structural layer 2 is a triligamentous foreschiral honeycomb.

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Abstract

The invention relates to a flexible back plate for a flexible display. The flexible back plate comprises a structure layer and a laying layer, wherein the structure layer is of a honeycomb structure with negative Poisson ratio; the laying layer is evenly laid in the central plane of the structure layer; the structure layer is made of shape memory polymers or composite materials; the laying layer is made of carbon fibers; the laying layer is provided with an leading-out terminal provided with two electrodes; when the two electrodes are electrified, the laying layer generates heat to heat the structure layer to enable the structure layer to reach the glass-transition temperature of the material of the structure layer, and exerts an external force to the honeycomb structure to achieve the purpose of deforming the honeycomb, the shape of the honeycomb can be fixed after the heating is stopped, the size is increased in two directions, in this way, the size of the back plate is increased; when the honeycomb structure is in an unidirectional compression, the size is decreased in a plane, in this way, the size of the back plate is decreased; and the honeycomb structure with negative Poisson ratio has double-curvature characteristic. The flexible back plate has the following characteristics of being bendable, having double curvature, impact resistance and anti-shock performance, being capable of being driven intelligently, and being light and beautiful.

Description

technical field [0001] The invention relates to a flexible backplane of a flexible display. Background technique [0002] As a new generation of display devices, flexible displays are widely used in mobile phones, personal digital assistants (PDAs), digital cameras, car displays, notebook computers, wall-mounted TVs, and military fields due to their advantages of portability, light weight, and unfavorable breakage. It has very broad application prospects. The main technical challenge today lies in the manufacture of flexible thin film transistor substrates. [0003] In the prior art, for flexible displays, polymer materials such as polyimide (Polyimide) are generally used as the material of the flexible substrate in the flexible display. Using this flexible substrate does not cause plasticity within a few millimeters of curvature radius. Deformation (permanent deformation), however, if it is bent beyond the range of elastic deformation, it will cause permanent deformation,...

Claims

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Application Information

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IPC IPC(8): G09F9/00B32B3/12B32B27/06B32B33/00
Inventor 姚永涛杨成黄建刘彦菊冷劲松
Owner HARBIN INST OF TECH
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