To provide a configuration where reduction in the thickness of a liquid crystal display device is possible and the problem with visibility as in the case where a touch panel is mounted on a liquid crystal display panel can be solved. The shift operation device includes a rotary member for a shift operation and a locking mechanism for locking the rotary member so as not to move toward at least a position for backward movement from a position for neutral. 0% by weight and a hydrogen peroxide concentration of 2.