Patent ID: 9508592
Filing Date: 2016-11-29
CPC Classification: G02F,H01L

Claim Text:
1. A method of manufacturing a semiconductor device, comprising the steps of: forming a semiconductor layer; forming a first protective film having conductivity over the semiconductor layer; forming a conductive film containing copper, aluminum, gold, or silver over the first protective film; forming a second protective film over the conductive film; processing the second protective film to form a second protective layer; processing the conductive film to form a conductive layer; forming a third protective film in contact with a side surface and a top surface of the second protective layer and a side surface of the conductive layer; and processing the third protective film and the first protective film by anisotropic etching to form a third protective layer in contact with the side surface of the conductive layer and a first protective layer between the conductive layer and the semiconductor layer, respectively.