A thin film transistor includes a first insulating layer and a first conductive layer formed on a semiconductor substrate, a second insulating layer, a second conductive layer and a third insulating layer sequentially formed on the first conductive layer, a contact hole formed in the second insulating...http://www.google.de/patents/US6165823?utm_source=gb-gplus-sharePatent US6165823 - Thin film transistor and a fabricating method therefor
