Patent ID: 7858988

Claim:
A structure of a multi-gate thin film transistor (TFT) for LCD, comprising: a polycrystalline silicon layer formed on a substrate having a source region, a first doped region, a first gate channel, a second doped region, a second gate channel, a third doped region, and a drain region, further, said polycrystalline silicon layer having a first horizontal section formed said source region at an end thereof and a first vertical section formed said drain region at an opposite end thereof; a multi-gate, including a scanning line and a L-shaped extension portion formed on said substrate, and said L-shaped extension portion intersected said first horizontal section and said first vertical section of said polycrystalline silicon layer to form said first gate channel and said second gate channel, respectively; and a gate oxide layer formed in between said multi-gate and said polycrystalline silicon layer.