Reinforced film, optical member, and electronic member
By using an adhesive layer with a specific composition in the reinforcing film, the problems of insufficient flexural recovery and flexural retention are solved, and a suitable variation in light peel and adhesion is achieved, making it suitable for equipment subject to repeated bending.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NITTO DENKO CORP
- Filing Date
- 2021-07-27
- Publication Date
- 2026-06-09
AI Technical Summary
Existing reinforcing films are difficult to maintain good flexural resilience and flexural holding force under repeated bending or flexing, and the changes in adhesive force are not easy to control, which affects the yield and operability of the equipment.
An adhesive layer comprising polymer (A) and polymer (B) is used. Polymer (B) contains a polyorganosiloxane backbone and (meth)acrylic monomer units, with a surface elastic modulus in the range of 1 to 20 kPa and a weight-average molecular weight of 10,000 to 100,000. The change in adhesive force is controlled by adjusting the bulk elastic modulus and loss modulus.
It achieves light peeling resistance in the initial stage of application, and a significant increase in adhesion in the later stage. It has good flexural recovery and flexural retention, and is suitable for repeated bending environments where it is not prone to peeling or other defects.
Smart Images
Figure CN116096570B_ABST