Patent ID: 8023056

Claim:
An active matrix substrate including, in each pixel area, a transistor, a pixel electrode, a conductive member functioning as one of electrodes of a storage capacitor, a drain lead-out electrode connected to a drain electrode of the transistor, and overlapping with the conductive member, and a contact hole for connecting the drain lead-out electrode to the pixel electrode, comprising: a gate insulating film covering a gate electrode of each transistor, and the conductive member, the gate insulating film comprising: a first thickness portion overlapping with at least part of the contact hole; a second thickness portion formed adjacent to the first thickness portion, and overlapping with the drain lead-out electrode, the first thickness portion having a greater thickness than the second thickness portion, and wherein the first thickness portion is constituted by the first and second gate insulating films, and the second thickness portion is constituted by the second gate insulating film.