Flexible screen folding cover plate and preparation method thereof and flexible display module
A technology for folding covers and flexible screens, applied in instruments, identification devices, etc., can solve problems such as poor bending performance of flexible screen folding covers, reduce the risk of cracks or even breakage, improve bending performance, and alleviate stress concentration. Effect
Active Publication Date: 2020-09-22
HEFEI VISIONOX TECH CO LTD
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Problems solved by technology
[0003] In view of this, the embodiments of the present invention are dedicated to providing a flexible screen folding cover and its preparation method. In addition, the present invention also provides a flexible display module using the flexible screen folding cover to solve the problem of existing flexibility The problem of poor bending performance of the screen folding cover
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preparation example Construction
[0044] Figure 6 It is a flowchart of a method for preparing a flexible screen folding cover provided by an embodiment of the present invention. Such as Figure 6 As shown, the preparation method of the flexible screen folding cover plate includes the following steps:
[0045] S101: providing a flexible substrate;
[0046] S102: Form a covering layer on the surface of the flexible substrate, wherein the covering layer includes at least one negative Poisson's ratio material layer.
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The invention provides a flexible screen folding cover plate and a preparation method thereof and a flexible display module. The problem that a folding cover plate in an existing flexible screen is poor in bending performance is solved. The flexible screen folding cover plate comprises a flexible base material and a covering layer formed on the surface of the flexible base material; the covering layer comprises at least one negative-Poisson's-ratio material layer. According to the flexible screen folding cover plate, the covering layer comprising at least one negative-Poisson's-ratio materiallayer is arranged on the surface of the flexible base material, and the covering layer on the surface layer has the negative Poisson's ratio characteristic, so that the stress concentration of the cover plate during stress is reduced, the risk of cracks and even breakage on the surface of the cover plate is reduced, and the bending performance of the flexible screen folding cover plate is furtherimproved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a flexible screen folding cover, a preparation method thereof, and a flexible display module. Background technique [0002] As an important part of the bendable flexible screen, the folding cover of the flexible screen is arranged at the outermost end of the flexible screen. With the continuous development of display technology, flexible screens with good bending performance are more and more popular in the market, and higher requirements are put forward for the bending performance of the flexible screen folding cover. The existing flexible screen folding covers are mostly made of colorless transparent polyimide (Colorless Polyimide, CPI) with hard coating or ultra-thin glass (Ultra Thin Glass, UTG). The performance is not optimistic, and there is a problem of poor bending performance. Therefore, abnormalities such as cracks, surface scratches, and internal disconnections occur...
Claims
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IPC IPC(8): G09F9/30
CPCG09F9/301
Inventor 王亚玲
Owner HEFEI VISIONOX TECH CO LTD