Patent ID: 6825495
Filing Date: 2004-11-30
Classification: H01L

Abstract:
A complementary metal oxide semiconductor (CMOS) transistor, comprising:a first thin-film transistor (TFT) of a first conductivity type, comprising: a first gate; and a first polysilicon island under the first gate, comprising: a first channel region right under the first gate; a source region on one side of the first gate; and a first doped region of a first conductivity type on the other side of the first gate, wherein the source region, the first channel region and the first doped region are arranged along a first direction; a second TFT of a second conductivity type, comprising: a second gate; and a second polysilicon island under the second gate, comprising: a second channel region right under the second gate; a second doped region of a second conductivity type on one side of the second gate; and a drain region on the other side of the second gate, wherein the second doped region, the second channel region and the drain region are arranged along the first direction, and the second doped region and the first doped region of the first TFT are arranged along a second direction that is perpendicular to the first direction; an inter-layer dielectric layer covering the first TFT and the second TFT, having a plurality of contacts therein connecting with the first doped region and the second doped region, respectively; a conductive line on the inter-layer dielectric layer extending along the second direction, the conductive line electrically connecting the first doped region and the second doped region via the contacts; a source contact metal disposed on and through the inter-layer dielectric layer to electrically connect with the source region; and a drain contact metal disposed on and through the inter-layer dielectric layer to electrically connect with the drain region.