Active matrix substrate

An active matrix substrate comprising:

• a substrate;
• a plurality of source bus lines and a plurality of gate bus lines that are supported by the substrate;
• and
• a plurality of oxide semiconductor TFTs supported by the substrate, each of the plurality of oxide semiconductor TFTs including an oxide semiconductor layer, a gate electrode disposed on part of the oxide semiconductor layer with a gate insulating layer interposed between the part of the oxide semiconductor layer and the gate electrode, a source electrode, and a drain electrode,
• wherein the oxide semiconductor layer includes a channel region, a source contact region electrically connected to the source electrode, and a drain contact region electrically connected to the drain electrode,
• the channel region is a region located between the source contact region and the drain contact region and overlapping the gate electrode in a view from a normal direction of the substrate, the channel region including, in a view from the normal direction of the substrate,
• a first end portion and a second end portion that oppose each other and extend in a first direction from the source contact region side toward the drain contact region side,
• a source side end portion that is located on the source contact region side of the first end portion and the second end portion and extends in a second direction that intersects the first direction, and
• a drain side end portion that is located on the drain contact region side of the first end portion and the second end portion and extends in the second direction,
• the plurality of oxide semiconductor TFTs include a plurality of first TFTs, and each of the plurality of first TFTs further includes a light blocking layer located between the oxide semiconductor layer and the substrate,
• the light blocking layer includes an opening region that overlaps part of the channel region and a light blocking region that overlaps another part of the channel region, in a view from the normal direction of the substrate,
• the light blocking region includes a first light blocking portion that extends in the first direction over the first end portion of the channel region and a second light blocking portion that extends in the first direction over the second end portion of the channel region, in a view from the normal direction of the substrate, and
• each of the first light blocking portion and the second light blocking portion includes a first edge portion and a second edge portion that oppose each other and extend in the first direction, at least part of the first edge portion overlaps the channel region, and the second edge portion is located on an outer side of the channel region and does not overlap the channel region, in a view from the normal direction of the substrate.