Patent ID: 9472656
Filing Date: 2016-10-18
CPC Classification: H01L

Claim Text:
1. A method for manufacturing a semiconductor device, comprising: forming a semiconductor layer; forming a first conductive film over and in contact with the semiconductor layer; performing a light exposure using a photomask after forming the first conductive film; forming first masks over the first conductive film after performing the light exposure; forming a first conductive layer and a second conductive layer over the semiconductor layer by selectively etching the first conductive film using the first masks; forming a second conductive film over the first conductive layer and the second conductive layer after removing the first masks; performing an electron beam exposure after forming the second conductive film; forming a second mask over the second conductive film after performing the electron beam exposure; and forming a third conductive layer over and in contact with the first conductive layer and a fourth conductive layer over and in contact with the second conductive layer by selectively etching the second conductive film using the second mask.