Patent ID: 10719176

Abstract:
A transparent laminated film comprising a transparent substrate layer and a surface-smooth layer on one side of the transparent substrate layer is disposed on a display surface of a pen-input device. The surface-smooth layer comprises a cured product of a curable composition containing a urethane (meth)acrylate and a leveling agent, and the coefficient of static friction, the coefficient of dynamic friction, and the difference between the coefficient of static friction and the coefficient of dynamic friction (the coefficient of static friction—the coefficient of dynamic friction) are adjusted to 0.2 to 0.4, 0.1 to 0.3, and a range of larger than 0.05, respectively. The curable composition may further comprise a polyfunctional (meth)acrylate. The leveling agent may comprise a silicone-series leveling agent and/or a fluorine-containing leveling agent. When used for a pen-input device, the film permits input like writing on paper with a ballpoint pen.