Thin film transistor and organic light emitting pixel having the same

摘要

A thin film transistor (TFT) that includes a control electrode, a semiconductor pattern, a first input electrode, a second input electrode, and an output electrode is disclosed. in one aspect, the semiconductor pattern includes a first input area, a second input area, a channel area, and an output area. The channel area is formed between the first input area and the output area and overlapped with the control electrode to be insulated from the control electrode. The second input area is formed between the first input area and the channel area and doped with a doping concentration different from a doping concentration of the first input areas. The second input electrode makes contact with the second input area and receives a control voltage to control a threshold voltage.

主权项

1. A thin film transistor, comprising:
a control electrode; a semiconductor pattern that includes a first input area, an output area, a channel area formed between the first input area and the output area and overlapped with the control electrode to be insulated from the control electrode, and a second input area formed between and abutting the first input area and the channel area and doped with a doping concentration different from a doping concentration of the first input area; a first input electrode making direct contact with the first input area; a second input electrode making direct contact with the second input area and receiving a control voltage to control a threshold voltage; and an output electrode making direct contact with the output area.