Patent ID: 9373683
Filing Date: 2016-06-21
CPC Classification: H01L

Claim Text:
1. A thin film transistor, comprising: a gate; a gate insulating layer, covering the gate; a semiconductor layer, located on the gate insulating layer and disposed above the gate; and a source and a drain, disposed above the gate insulating layer and electrically connected to the semiconductor layer, the source and the drain being formed of same material; and an insulating layer, disposed between the source and the semiconductor layer, wherein the insulating layer has a contact hole exposing the semiconductor layer, the source fills the contact hole of the insulating layer and is electrically connected to the semiconductor layer, and the drain is disposed between the insulating layer and the semiconductor layer, wherein the source and the drain are respectively located in different layers, the insulating layer is a single-layer structure, a first contact resistance is existed between the source and the semiconductor layer, a second contact resistance is existed between the drain and the semiconductor layer, and the first contact resistance is less than the second contact resistance.