Patent ID: 8330883

Claim:
An active matrix substrate including a display region and a non-display region, the active matrix substrate comprising: a plurality of pixel electrodes in the display region; a plurality of storage capacitor wirings; and an insulating film; a trunk wiring, wherein: the insulating film is provided in a layer above the storage capacitor wirings; the trunk wiring is provided in a layer above the insulating film; each of the storage capacitor wirings is located in the display region and the non-display region; each of the storage capacitor wirings is connected, via a contact hole, with the trunk wiring in the non-display region, the insulating film comprises a through-bore portion in the contact hole, and a portion with a reduced thickness adjacent to the through-bore portion, wherein the insulating film includes: a first film thickness portion adjacent to the through-bore portion; and a second film thickness portion which is adjacent to the first film thickness portion and larger in film thickness than the first film thickness portion, the insulating film being a gate insulating film including a plurality of gate insulating layers, wherein the first film thickness portion includes at least one gate insulating layer, and the second film thickness portion includes more gate insulating layers than the first film thickness portion, wherein a bottommost one of the gate insulating layers is a planarizing film in the second film thickness portion, and wherein a portion of the planarizing film which portion is in contact with a substrate is thicker than a metal wiring disposed on the substrate.