Flexible electronic device and preparation method thereof

Abstract

A flexible electronic device comprises a flexible substrate, an electronic component arranged on the flexible substrate and a protection layer covering the flexible substrate and the electronic component, wherein the protection layer is formed by modified polymethyl methacrylate which comprises a plurality of alkyl branched chains, a plurality of modified functional groups and a metal ion; the modified functional groups comprise at least one group including components selected from hydroxyl, amido, sulfhydryl group, acylamino, carboxylic acid group or sulfonyl; the metal ion is at least one group comprising components selected from barium, strontium, calcium, titanium and aluminum and is coupled with the modified functional groups. The flexible electronic device has the advantages of high water-oxygen resistant characteristic and preparation simplicity.

Description

technical field [0001] The present invention relates to a flexible electronic device and its preparation method, in particular to a flexible electronic device with a protective layer highly resistant to water and oxygen and its preparation method. Background technique [0002] With the advancement of display technology, liquid crystal displays, plasma displays, electroluminescent displays, and vacuum fluorescent displays are all developing in a lighter and thinner direction, and even develop flexible displays. In addition, such as smart phones Among electronic devices such as , and tablet computers, displays integrated with touch panels are more mainstream in the current market. In addition to being thinner and lighter, flexible displays or touch panels are gradually becoming the next generation of electronic products for portability. [0003] However, most of the substrates and outermost protective layers currently used in displays and touch panels are made of glass. Glass...

AI Technical Summary

Problems solved by technology

[0003] However, most of the substrates and outermost protective layers used in displays and touch panels are made of glass. Glass is not only heavy, but also brittle, making it difficult to apply to flexible electronic devices.

In order to reduce its weight, most solutions are to use plastic organic sheets, but too thick sheets are often easily broken due to insufficient flexibility

In addition, the plastic sheet generally used as a protective layer is hygroscopic, and it is easy to generate air bubbles due to the absorption of moisture during the preparation process, resulting in a decrease in its water and oxygen blocking ability and penetration rate. Or on the surface of the touch panel, and most of the plastic plates usually undergo special surface treatment (such as anti-fingerprint surface treatment, etc.), which reduces the adhesion between the plate and the optical adhesive, and easily causes a decrease in the water and oxygen barrier rate.

Furthermore, in the degumming process of the display and / or touch panel manufacturing process, the protective layer is often broken due to pressure on the carrier board, which reduces the yield

Therefore, the use of plastic sheet as a protective layer of electronic devices such as displays or touch panels, in addition to the problems of poor water and oxygen resistance and poor yield

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