Layer materials

Abstract

The term refers to layered materials including resin-cured layers, linear polarized film layers, pressure-sensitive adhesive layers, and layered array layers in this order, where cracks that form in the resin-cured and crystal-cured layers when the surface areas of the layered material are polished with multiple overlapping layered materials can be made smaller. The layered materials in the light-shielding system include a solidified resin layer, a linear polarized film layer, a pressure-sensitive adhesive layer, and a hysteresis film layer in that order. The hysteresis film layer consists of a liquid crystal solidified layer. This layer material satisfies HM > 2.4 * 10³ (N / mm²), where HM is the Martens hardness (N / mm²) of the solidified resin layer at 23°C. The pressure-sensitive adhesive layer satisfies E / T > 2.5 x 10³ (Pa / μιη), where E is the reserve elastic modulus (Pa) at 25°C, and T is the thickness (μιιι).