Patent ID: 9660091
Date: 2017-05-23
CPC Classifications: G02F,G09G,H01L

Claim:
1. A thin film transistor (TFT) comprising: an active layer; a bottom gate electrode below the active layer to drive a first region of the active layer; and a top gate electrode on the active layer to drive a second region of the active layer, the bottom and top gate electrodes configured to control conductivity of the active layer, wherein one of the top and bottom gate electrodes are arranged to be offset with respect to the other one of the top and bottom gate electrodes along a vertical direction such that one edge of the top gate electrode and one edge of the bottom gate electrode are provided past the one edge of the bottom gate electrode and the one edge of the top gate electrode, respectively, the bottom gate electrode includes a third region overlapping with the active layer and a fourth region overlapping with one of the top gate electrode or a source/drain region of the TFT, and the third region is substantially longer than the fourth region, and wherein the bottom gate electrode is a single gate electrode.