Patent ID: 9570310
Date: 2017-02-14
CPC Classifications: G02F,H01L

Claim:
1. A method for manufacturing a semiconductor device, comprising the steps of: forming a first electrode and a second electrode over a substrate; forming a first insulating film over the first electrode and the second electrode; forming a second insulating film over the first insulating film; forming a first conductive film over the second insulating film; forming a first mask including a first region and a second region over the first conductive film, wherein a thickness of the first mask in the second region is smaller than a thickness of the first mask in the first region; removing first portions of the first insulating film, the second insulating film, and the first conductive film with the use of the first mask to form a first opening and a second opening; removing the first mask in the second region to form a second mask after removing the first portions; removing a second portion of the first conductive film with the use of the second mask; removing the second mask after removing the second portion; forming a third insulating film over the second insulating film; and forming a pixel electrode over the third insulating film, the pixel electrode electrically connected to the first electrode through the first opening, and forming a second conductive film over the third insulating film, the second conductive film electrically connected to the second electrode through the second opening and to the first conductive film through a third opening opened in the third insulating film, wherein the first electrode and the second electrode are formed by etching a same conductive film, and wherein the third opening is spaced apart from the second opening.