| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical film that can prevent Newton's rings from occurring and can prevent a display unit and the optical film from adhering to each other without degrading visibility of a display screen.SOLUTION: An optical film includes plural types of minute protrusion shape 22 formed on the surface thereof regularly and having different heights. The optical film 14 is adhered to a back surface of a touch panel sensor 12 included in a touch-panel display device 10, thereby preventing Newton's rings from occurring and preventing a display unit 11 and the optical film 14 from adhering to each other without degrading visibility of a display screen. |
