Protective film and method for manufacturing the same, electronic device

By using a PET-UV adhesive-PU composite film system, combining the flexibility of the UV adhesive semi-cured layer and the PU layer, the problem of the protective film being difficult to cover curved areas on low surface energy, large-angle 3D screens is solved, achieving tight bonding and full coverage, thus improving the screen's protective performance and aesthetics.

CN112339382BActive Publication Date: 2026-06-09HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2020-04-20
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

When applying a protective film to a low surface energy, wide-angle 3D screen, the film is difficult to cover the curved area, affecting aesthetics and refinement. Furthermore, the existing protective film is far from the screen edge, impacting the overall appearance and user experience of the electronic device.

Method used

The PET-UV adhesive-PU composite film system combines the flexibility of the UV adhesive semi-cured layer and the PU layer, and achieves a tight bond between the protective film and the screen through full curing treatment, including perfect adhesion to curved areas.

Benefits of technology

It achieves full coverage of the curved screen with a protective film, improving the screen's protective performance and aesthetics, while maintaining the screen's touch sensitivity and fingerprint recognition effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of communication terminal products, and provides a protective film, a preparation method of the protective film and an electronic device. The protective film comprises a hardened layer, a PET layer combined with one surface of the hardened layer, a UV glue semi-cured layer combined with a surface of the PET layer away from the hardened layer, a PU layer combined with a surface of the UV glue semi-cured layer away from the PET layer, wherein the Shore hardness of the PU layer is less than 90A, and an adsorption layer combined with a surface of the PU layer away from the UV glue semi-cured layer. The protective film has excellent fitting effect on a screen, especially a curved screen such as a large-angle 3D screen, can effectively cover the arc surface area, and protects the screen from being damaged.
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