Active matrix substrate, method for manufacturing same and in-cell touch panel display device

An active matrix substrate that includes a display region having a plurality of pixel regions, the active matrix substrate comprising:

• a substrate;
• a thin film transistor supported on the substrate, and disposed in association with each of the pixel regions;
• a pixel electrode disposed above the thin film transistor in each of the pixel regions;
• a pixel contact portion that electrically connects the pixel electrode to the thin film transistor in each of the pixel regions;
• and
• a common electrode disposed above the thin film transistor so as to at least partially overlap the pixel electrode of each of the pixel regions with a dielectric layer therebetween, and electrically separated from the pixel electrode, wherein
• the thin film transistor includes a semiconductor layer, a gate electrode, a gate insulating layer disposed between the semiconductor layer and the gate electrode, a source electrode, and a drain electrode, and the drain electrode is disposed on the semiconductor layer with a lower insulating layer therebetween, and is in contact with a portion of the semiconductor layer in a drain opening portion formed in the lower insulating layer,
• the pixel contact portion in each of the pixel regions includes
• the drain electrode,
• a first insulating layer that covers the drain electrode,
• a connecting electrode in contact with the drain electrode in a first opening portion formed in the first insulating layer,
• a second insulating layer that covers the connecting electrode, and
• the pixel electrode in contact with the connecting electrode in a second opening portion formed in the second insulating layer,
• a transparent capacitor portion including the pixel electrode, the common electrode, and the dielectric layer located between the pixel electrode and the common electrode is formed on the second insulating layer, and
• when viewed from a direction normal to the substrate, in each of the pixel regions,
• a drain contact region where the drain electrode and the semiconductor layer are in contact with each other in the drain opening portion does not overlap either a first contact region where the connecting electrode and the drain electrode are in contact with each other in the first opening portion or a second contact region where the pixel electrode and the connecting electrode are in contact with each other in the second opening portion,
• an entirety of the second contact region overlaps the first contact region, and
• the transparent capacitor portion at least partially overlaps the first contact region.