Patent ID: 8038810
Filing Date: 2011-10-18
Classification: B32B,C21D,H01L,Y10T

Abstract:
1. A method for manufacturing a clad textured metal substrate for forming an epitaxial thin film thereon comprising the following steps: (a) an orienting heat treatment step of cold-working a copper sheet at a working rate of 95% or more, and heat-treating the copper sheet obtained through the cold working in a non-oxidative atmosphere to make at least the surface part a {100}<001>cube texture having a deviating angle Δφ of crystal axes satisfying Δφ≦6 degrees; (b) a step of preparing a metal sheet; and (c) a surface activated bonding step of dry-etching the surfaces to be bonded of the copper sheet obtained by the orienting heat treatment step and the metal sheet in a non-oxidation atmosphere to remove the oxide and adsorbate on the surfaces to be bonded, and bonding the copper sheet with the metal sheet without or through the application of pressure.