THIN FILM TRANSISTOR SUBSTRATE AND MANUFACTURING METHOD THERROF

摘要

The present invention relates to a thin film transistor display board and a manufacturing method thereof. The thin film transistor display board includes a polycrystalline silicon thin film transistor which is formed on a substrate. A source region and a drain region of a semiconductor layer of a thin film transistor are electrically connected to a power source supply line. The present invention removes the floating state of the polycrystalline silicon semiconductor layer by a voltage of the power source supply line. Thereby, an influence by a junction coupling generated in the source and drain regions is minimized even though the gate voltage of the thin film transistor is changed.