Patent ID: 7586478
Filing Date: 2009-09-08
Classification: H01L,H03K

Abstract:
1. An active matrix liquid crystal display device comprising: a plurality of pixels arranged in a matrix, wherein one of the plurality of pixels includes a fifth thin film transistor; and a driver circuit electrically connected to a gate of the fifth thin film transistor, wherein the driver circuit comprises: wherein: the first to fourth thin film transistors have a same conductivity type, a second impurity region of the first thin film transistor and a second impurity region of the second thin film transistor are electrically connected to a fifth terminal, a second impurity region of the third thin film transistor and a second impurity region of the fourth thin film transistor are electrically connected to a gate electrode of the first thin film transistor, a gate electrode of the second thin film transistor and a gate electrode of the fourth thin film transistor are electrically connected to a sixth terminal, a gate electrode of the third thin film transistor is electrically connected to the first impurity region of the third thin film transistor, and the first terminal is electrically connected to the first power supply line.