Patent ID: 7659147

Claim:
A method for cutting a solid-state image pickup device, in which a glass cover plate having a spacer formed thereto is adhered to a solid-state image pickup element wafer having a plurality of solid-state image pickup elements thereon for cutting the solid-state image pickup device into individual solid-state image pickup devices, comprising the steps of: applying a masking film to a peripheral portion of a back surface of the glass cover which is opposite to surface of the glass cover having the spacer formed thereto; coating a transparent temporary bonding agent having an adjustable adhesive strength to the surface to which the masking film is applied; peeling off the masking film after the coating of the temporary bonding agent; adhering a transparent protective wafer having a surface to which an adhesive sheet having a reducible adhesive strength is attached to the surface of the glass cover plate to which the temporary bonding agent is coated, with the adhesive sheet facing to the glass cover plate surface; cutting into the adhered glass cover plate and protective wafer from the surface of the glass cover plate and stopping at the temporary bonding agent; bonding the solid-state image pickup element wafer to the cut glass cover plate; peeling off the protective wafer, the adhesive sheet, and the temporary bonding agent after the bonding of the solid-state image pickup element wafer to the glass cover plate; and dividing individual solid-state image pickup devices by cutting the solid-state image pickup element wafer.