A method for adhering a major substrate and a cover substrate, the major substrate comprising a surface having both of convex structures and concave structures, the major substrate being transparent to ultraviolet light, the method comprising the steps of:
- applying a silicone rubber composition to a contact surface of a cover substrate;
- forming a silicone rubber layer at the contact surface of the cover substrate by curing the silicone rubber composition;
- contacting closely a surface of a major substrate and the silicone rubber layer of the cover substrate;
- and
- forming a silicone oxides film at an interface of the contact face between the silicone rubber layer and the major substrate by exposing the ultraviolet light from a major substrate side.