Patent ID: 8450738

Claim:
An active matrix substrate comprising: pixel regions which are provided in a line direction in which scan signal lines extend and in a column direction; data signal lines which extend in the column direction; a gate insulating film which covers the scan signal lines; and an interlayer insulating film which covers the data signal lines, two of the data signal lines being provided so that (i) the two of the data signal lines and a gap between respective two of the pixel regions which are adjacent to each other in the line direction overlap each other or (ii) the two of the data signal lines and a region which extends along the gap overlap each other, the interlayer insulating film having a hollow part so that the hollow part and a gap between the two of the data signal lines overlap each other, and part of the hollow part and the scan signal lines overlap each other via the gate insulating film, wherein: in each of the scan signal lines, the gate insulating film has a thickness which is thinner in a region above a first region than in a region above a first adjacent region, the first adjacent region being adjacent, in the line direction, to the first region which corresponds to a region under the hollow part, the gate insulating film in the region above the first adjacent region is made up of a plurality of insulating films, the gate insulating film in the region above the first adjacent region is made up of an inorganic insulating film and an organic insulating film, and the gate insulating film in the region above the first region is made up of (i) only an organic insulating film or (ii) an inorganic insulating film and an organic insulating film.