Optical transparent adhesive, preparation method thereof, optical transparent film and application

By designing an optical transparent gel containing alkyl acrylate, copolymerizable monomer, photoinitiator and ultraviolet absorber, the problem of OCA optical glue aging in the ultraviolet environment is solved, and the effect of high barrier ultraviolet rays and high adhesion is achieved, and the service life of the product is extended.

CN119684940APending Publication Date: 2025-03-25SUZHOU TONGLI PHOTOELECTRIC CO LTD
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Patent Information

Application Number
CN202411991664.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

OCA optical glue will cause chemical structure changes and yellowing when exposed to ultraviolet light for a long time, which will affect light transmittance and color accuracy, reduce display quality, destroy bonding performance, and shorten product service life.

Method used

An optical transparent gel is designed, and its raw materials include alkyl acrylate, copolymerizable monomers with a glass transition temperature of 85°C to 120°C, hydrophilic copolymerizable monomers containing hydroxyl groups, photoinitiators and ultraviolet absorbers, and is prepared by prepolymerization and polymerization reactions to form an optical glue with high ultraviolet barrier.

Benefits of technology

This optical glue has high adhesion and good weather resistance. It can effectively block ultraviolet rays from 370nm to 380nm, extend the service life of the product, and prevent ultraviolet rays from directly irradiating the surface of the patch to protect the patch below.

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Abstract

The invention relates to an optical transparent adhesive tape and a preparation method thereof, an optical transparent film and application, the optical transparent adhesive tape comprises the following raw material components in parts by weight: 1-90 parts of alkyl acrylate, the alkyl group in the alkyl acrylate has 1-18 carbon atoms; 1 to 50 parts of a copolymerizable monomer with a glass transition temperature of 85 DEG C to 120 DEG C; 1-50 parts of a hydrophilic copolymerizable monomer containing a hydroxyl group; 0.01 to 2 parts of a photoinitiator; and 0.01-4 parts of an ultraviolet light absorber. The ultraviolet-resistant adhesive has a high ultraviolet-resistant function, is relatively high in adhesive force, has no adverse phenomenon in a weather resistance test, can be used for blocking ultraviolet rays of 370-380 nm, and is good in performance. Besides, in the using process of the full-lamination process, ultraviolet radiation can be absorbed and scattered, the service life of a product is prolonged, ultraviolet rays can be prevented from directly irradiating the surface of a laminated object below the optical transparent adhesive tape, the laminated object below the optical transparent adhesive tape is better protected, and the service life of the laminated object is prolonged.
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