Patent ID: 7408198
Filing Date: 2008-08-05
Classification: G02F,H01L

Abstract:
1. A thin film transistor (TFT) comprising: a gate, disposed on a substrate and having a control part, a connection part and a capacitance compensation part, wherein the connection part joins the control part and the capacitance compensation part; a semiconductor layer, disposed over the gate; a source, disposed on a part of the semiconductor layer; and a drain, disposed on a part of the semiconductor layer, wherein a channel is formed between the source and the drain in the semiconductor layer, a first overlapping region between an end of the drain and the control part of the gate and the first overlapping region induces a first parasitic capacitance, a second overlapping region between another end of the drain and the capacitance compensation part of the gate and the second overlapping region induces a second parasitic capacitance, wherein the sum of the first parasitic capacitance and the second parasitic capacitance is a constant.