Patent ID: 9595528
Date: 2017-03-14
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a semiconductor substrate having a main surface; a first gate electrode and a second gate electrode extending in a first direction and arranged linearly in the first direction with a gap over the main surface of semiconductor substrate; a first insulating film formed on a first upper surface of the first gate electrode and a second upper surface of the second gate electrode and formed over the main surface of the semiconductor substrate between the first gate electrode and the second gate electrode; a second insulating film over the first insulating film; and a contact plug connected with the first gate electrode buried in a contact hole formed in the first insulating film and the second insulating film; wherein the first gate electrode has a first side surface and the second gate electrode has a second side surface, wherein the first side surface and the second side surface face each other in the first direction, wherein a third upper surface of the first insulating film formed between the first side surface and the second side surface is higher than the first upper surface of the first gate electrode, wherein a first sidewall is formed on the first side surface and a second sidewall is formed on the second side surface between the first gate electrode and the second gate electrode in the first direction, wherein the first sidewall contacts with the second sidewall in the first direction.