Flexible electronic device and its preparation method

Abstract

A flexible electronic device, comprising: a flexible substrate; an electronic component disposed on the flexible substrate; and a protective layer covering the electronic component and the flexible substrate, wherein the protective layer is It is composed of a modified polymethyl methacrylate; wherein, the modified polymethyl methacrylate includes a plurality of alkyl branches, a plurality of modifying functional groups and a metal ion, wherein, the The modifying functional group is at least one selected from the group consisting of hydroxyl group, amino group, sulfur group, amido group, carboxylic acid group or sulfonic acid group; the metal ion is at least one selected from the group consisting of barium, strontium, calcium, titanium aluminum The group formed; and the metal ion is coupled with the modifying functional group. The flexible electronic device of the present invention has the characteristics of high resistance to water and oxygen, and has the advantages of simple preparation.

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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