Patent ID: 6133609
Filing Date: 2000-10-17
Classification: H01L

Abstract:
A high-voltage thin-film transistor comprising on one of the same insulating substrate and the same insulating layer:a first thin-film transistor comprising a first active region, a first offset region, a first source region and a first drain region formed in the same layer as said first active region, a first insulating layer formed to cover said first active region, a first electrode formed on said first insulating layer overlapping said first active region, a second insulating layer formed to cover at least said first offset region, and a second electrode formed on said second insulating layer overlapping said first offset region, said first electrode being formed as a main-gate electrode, said second electrode being formed as a sub-gate electrode; anda second thin-film transistor comprising a second active region, a second offset region, a second source region and a second drain region formed in the same layer as said second active region, a third insulating layer formed to cover said second active region, a third electrode formed on said third insulating layer overlapping said second active region, a fourth insulating layer formed to cover at least said second offset region, and a fourth electrode formed on said fourth insulating layer overlapping said second offset region, said third electrode being formed as a main-gate electrode, said fourth electrode being formed as a sub-gate electrode, said second insulating layer and said third insulating layer being formed in the same layer.