Patent ID: 7839461

Claim:
An electro-optical device substrate comprising: a substrate, data lines over the substrate; scanning lines over the substrate, the scanning lines intersecting the data lines; pixel electrodes that are provided in pixels at positions corresponding to intersections of the data lines and the scanning lines; and transistors each including: a semiconductor layer located in a first region that extends along a first direction within a non-aperture region that separates aperture regions of the pixels, the semiconductor layer including a channel region having a channel length in the first direction; a data line side source/drain region electrically connected to a corresponding one of the data lines; a pixel electrode side source/drain region electrically connected to a corresponding one of the pixel electrodes; a first junction region between the channel region and the data line side source/drain region; and a second junction region between the channel region and the pixel electrode side source/drain region; a gate insulation layer; and a gate electrode including: a body portion opposed to the channel region through the gate insulating film; and an elongated portion that extends from the body portion so as to cover the second junction region; and an insulating film over the semiconductor layer, the insulating film having an opening portion that overlaps the channel region, the body portion of the gate electrode being arranged in the opening portion of the insulating film and the elongated portion of the gate electrode portion extending onto the insulating film so as to cover the second junction portion, wherein the second junction region is located in an intersection region of the non-aperture region, the intersection region being where the first region intersects a second region within the non-aperture region, the second region extending extends in a second direction that intersects with the first direction.