Flexible back plate for flexible display

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,...

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 deformed part will become white and turbid, which will affect its display quality

In addition, when the flexible substrate is bent, the electronic devices attached to the flexible substrate are squeezed or stretched. After repeated bending and deformation, the flexible substrate will be fatigued due to stress, making the electronic devices on the flexible substrate The device is damaged and the circuit is damaged, resulting in poor function

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