COPPER MEMBER FOR SEALED CHAMBER HAVING HYBRID TYPE JOINT STRUCTURE BY HIGH-ENERGY DENSITY WELDING AND ITS JOINING METHOD

摘要

PURPOSE: A copper member for forming a closed chamber, having a hybrid joint structure by high-energy density welding and a welding method thereof are provided to obtain improved heat sink effect because upper and lower joint plates are formed of copper materials having high conductivity. CONSTITUTION: A copper member comprises an upper joint plate(10) and a lower joint plate(20). A closed chamber(12) filled with a functional material is formed between the upper and lower joint plates. Each of the upper and lower joint plates includes a body with an extended adhesion surface coated with an adhesive(30). A fixing part is formed in a projection shape on one or both of the extended adhesion surfaces of the upper and lower joint plates and contacts the other to directly deliver the energy created by high-energy density welding to the other adhesion surface and melt together with the adhesion surfaces of the upper and lower joint plates, thereby fixing the upper and lower joint plates.