THIN FILM TRANSISTOR SUBSTRATE HAVING HYBRID CMOS STRUCTURE AND OPTICAL SENSOR ARRAY USING THE SUBSTRATE

摘要

The present invention relates to a thin film transistor substrate in which a polycrystalline silicon thin film transistor having a coplanar structure with an insulating interlayer and an amorphous silicon thin film transistor having an inverted staggered structure with a gate insulating layer are formed on one substrate and the insulating interlayer and the gate insulating layer are formed as the same layer. When a hybrid CMOS structure is used, the manufacturing process is simplified and a characteristic of the amorphous silicon thin film transistor and the characteristic of the polycrystalline silicon thin film transistor can be simultaneously obtained with one substrate, and, as a result, the applicability of the thin film transistor is increased.