High-reliability adhesive film for vehicle-mounted image display device

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By adjusting the glass transition temperature and energy storage modulus of the adhesive film and using alkaline monomers, the problems of poor durability and weak UV resistance in extremely high temperature environments are solved, which significantly improves the reliability of the on-board image display device and alleviates the problem of redness of the polarizer.

CN119662144APending Publication Date: 2025-03-21SUZHOU FINESET MATERIAL TECH CO LTD

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Patent Information

Application Number: CN202411895278.X
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-12-21
Publication Date: 2025-03-21

Application Information

Patent Timeline

21 Dec 2024

Application

CN202411895278.X

21 Mar 2025

Publication

CN119662144A

IPC: C09J7/30; C09J133/08; C09J7/10; C09J11/00; C08F220/18; C08F220/20; C08F220/56

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AI Technical Summary

Technical Problem

The existing automotive OCA glue has poor durability in extreme high temperature environments and weak UV resistance. It is also prone to local redness problems in high temperature reliability tests.

Method used

The adhesive film with a glass transition temperature controlled between -25 and -15℃, an energy storage modulus at 25℃, between 75,000Pa and 100,000Pa at 1Hz, and an energy storage modulus of 0.1Hz of 120℃ is greater than 30,000Pa, and alkaline monomers are included in the raw material.

Benefits of technology

It improves the reliability of the adhesive film in high temperature environments, alleviates the problem of polarizer redness, and enhances the resistance to ultraviolet rays.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of adhesives, and discloses a high-reliability adhesive film for a vehicle-mounted image display device, the glass transition temperature of the adhesive film is controlled between-25 DEG C and-15 DEG C, and the storage modulus of the adhesive film at 25 DEG C and 1 Hz is 75000-100000 Pa; the storage modulus of the adhesive film at 120 DEG C and 0.1 Hz is greater than 30000 Pa, and the raw materials of the adhesive film comprise alkaline monomers. The adhesive film has the advantages of being good in display effect and excellent in reliability when matched with vehicle-mounted equipment in the using process, and meanwhile the problem that a polaroid turns red after a high-temperature reliability test can be solved.

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