タッチパネル

Japanese Patent JP7265332

B2

To provide a writing feeling enhancement sheet excellent in writing feeling with a touch pen and having suppressed generation of discoloration.SOLUTION: There is provided a writing feeling enhancement sheet 1 having a substrate 11, a writing feeling enhancement layer 12 arranged on one surface side of the substrate 11, and an optical adjustment layer 13 arranged in an opposite side to the substrate 11 on the writing feeling enhancement layer 12, in which refractive index of the optical adjustment layer 13 is less than refractive index of the writing feeling enhancement layer 12, and an initial motion value (A) and a slide value (B) of pen tip satisfy relationships of the following formula (a) and formula (b) when the pen tip of the tough pen with a hard felt core having a pen tip diameter of 0.5 mm is made in contact with a surface in a side of the optical adjustment layer 13 in the writing feeling enhancement sheet 1 under a compression condition with load of 3.92 N in a vertical direction, and is moved in any one direction in parallel to the surface of the optical adjustment layer 13 at a rate of 100 mm/min. 0