Patent ID: 9385145
Filing Date: 2016-07-05
CPC Classification: H01L

Claim Text:
1. A double thin film transistor, comprising: a first semiconductor layer disposed over a substrate; a first insulating layer disposed over the first semiconductor layer, wherein the first insulating layer has a first opening and a second opening separated from each other; a first source and a first drain respectively in the first opening and the second opening, and the first semiconductor layer in contact with a portion of the first source and a portion of the first drain respectively through the first opening and the second opening; and a gate laterally between the first source and the first drain, and the gate, the first source and the first drain belong to a same conductive layer; a second insulating layer over the gate, the first source and the first drain; a second semiconductor layer over the second insulating layer, wherein the first semiconductor layer and the second semiconductor layer are the same conductive type; and a second source and a second drain disposed over the second insulating layer, and the second semiconductor layer in contact with a portion of the second source and a portion of the second drain.