Patent ID: 9382611
Filing Date: 2016-07-05
CPC Classification: B28B,C04B,C23C,H01L

Claim Text:
1. A method for manufacturing a sputtering target comprising the steps of: obtaining a mixed material by mixing an InO forming an In-M-Zn—O compound powder by performing a first baking to the mixed material and then grinding the mixed material; spreading part of the In-M-Zn—O compound powder in a mold; forming a compound film by performing a second baking and a first pressure treatment on the part of the In-M-Zn—O compound powder spread in the mold; spreading another part of the In-M-Zn—O compound powder over the compound film in the mold; and performing a third baking and a second pressure treatment on the another part of the In-M-Zn—O compound powder and the compound film in the mold, wherein the first baking is performed in a first atmosphere and then in a second atmosphere, wherein the first atmosphere is an inert atmosphere or a reduced-pressure atmosphere, and wherein the second atmosphere is an oxidation atmosphere.