Patent ID: 7179693

Claim:
A method for manufacturing a thin film device comprising the steps of: forming a protective layer on a first substrate; forming a thin film device layer on said protective layer; forming a first adhesive layer on said thin film device layer; bonding a second substrate to said thin film device layer with said first adhesive layer; exposing at least a portion of said protective layer by separating or removing at least a portion of said first substrate using an effective process; bonding a third substrate to at least a portion of said exposed protective layer with a second adhesive layer; and separating or removing said second substrate, wherein a separate layer is provided between the first substrate and the protective layer and the chemical processing speed of said separate layer is higher than that of the first substrate, and the chemical process of the separate layer is carried out by allowing chemical agent to reach the separate layer through a through hole of the first substrate formed by a chemical process subsequent to a process for forming at least one of a hole mechanically opened on the first substrate or a hole opened by a chemical process from a resist opening part formed by a photolithography on a resist layer with which the first substrate is covered, the first substrate is made of glass, the second substrate is made of molybdenum and the third substrate is made of polyimide.