Patent ID: 11036314

Abstract:
A cover member for an input device is disposed on a front-surface side of a display device in the input device includes recesses and protrusions on at least one principal surface. In the principal surface having recesses and protrusions, when a cutoff value for a high-pass filter λc is set to 1.6 times the pitch of the recesses and protrusions of a measured cross-sectional curve and a cutoff value for a low-pass filter λs is set to 25 μm, the maximum roughness height Rz of the recesses and protrusions is 3-1000 nm and the pitch RSm of the recesses and protrusions is 50-1000 μm, and when the cutoff value of the high-pass filter λc is set to 25 μm, the three-dimensional arithmetic mean height Sa of the recesses and protrusions is 1-50 nm and the pitch RSm of the recesses and protrusions is 0.01-10 μm.