TOUCH PANEL, DISPLAY DEVICE AND OPTICAL SHEET, AND METHOD OF SELECTING OPTICAL SHEET AND METHOD OF MANUFACTURING OPTICAL SHEET

PROBLEM TO BE SOLVED: To provide a touch panel that can provide properties including an anti-glare property, and prevent glare of video light from a super-high definition display element with a pixel density of 300 ppi or more.SOLUTION: There is provided a touch panel having an optical sheet as a component member, where the optical sheet has a rugged shape on a surface, has an inclination angle of 4 to 15 degrees, which indicates the point of inflection in the plus direction from an inclination angle indicating the peak value of an inclination angle distribution curve of the rugged shape, has a difference of 2.2 to 10 degrees between an inclination angle indicating the point of inflection in the plus direction and an inclination angle indicating the peak value in the inclination angle distribution curve, and is used for the front face of a display element with a pixel density of 300 ppi or more. 【課題】防眩性等の諸特性を付与できるとともに、画素密度３００ｐｐｉ以上の超高精細の表示素子の映像光のギラツキを防止できるタッチパネルを提供する。【解決手段】光学シートを構成部材として有するタッチパネルであって、前記光学シートは、表面に凹凸形状を有してなり、該凹凸形状の傾斜角度分布曲線のピーク値を示す傾斜角度からプラス方向における変曲点を示す傾斜角度が４〜１５度であり、かつ前記プラス方向における変曲点を示す傾斜角度と、前記傾斜角度分布曲線のピーク値を示す傾斜角度との差が２．２〜１０度であり、画素密度３００ｐｐｉ以上の表示素子の前面に用いられるタッチパネル。【選択図】図３