Patent ID: 6426517
Filing Date: 2002-07-30
Classification: G02F,H01L

Abstract:
An active matrix type EL display device comprising:a pixel portion over a substrate; a driving circuit over the same substrate; at least a thin film transistor in the pixel portion, said thin film transistor including: a semiconductor island including: a source region, a drain region, and a plurality of channel forming regions each being formed between the source region and the drain region; a gate insulating film; and a gate electrode being adjacent to the semiconductor island and having the gate insulating film between the semiconductor island and the gate electrode, wherein the gate electrode is divided into a plurality of gate electrode portions, wherein one of the gate electrode portions being the closest to the drain region has the narrowest width among the plurality of gate electrode portions, wherein a current flows from the source region to the drain region through each of the plurality of channel forming regions in a channel length direction.