Optical laminate and image display device
By using an adhesive sheet with a specific composition, the problem of balancing reflection and high-temperature durability during the bonding of liquid crystal alignment fixing layers was solved, resulting in an optical laminate that reduces reflection and improves high-temperature durability, thereby enhancing the performance of image display devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NITTO DENKO CORP
- Filing Date
- 2024-12-04
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, when bonding liquid crystal alignment fixing layers with adhesive sheets, it is difficult to simultaneously reduce reflection and maintain durability at high temperatures.
The adhesive sheet is made of a base polymer with a specific composition, ensuring that the sum of its refractive index products is greater than 1.51 and the weight-average molecular weight is greater than 800,000, and the thickness of the adhesive sheet is controlled to be greater than 4 μm. The use of aromatic ring monomers is combined to improve the stress relaxation of the adhesive sheet.
This achieves the maintenance of the durability of the optical laminate at high temperatures, while reducing reflection and improving the visual recognition of the image display device.
Smart Images
Figure CN122422792A_ABST