Patent ID: 11927860
Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. The manufacturing method of an active matrix substrate according to claim 14,
wherein the active matrix substrate includes at least one groove region arranged in the non-display region, each of the at least one groove region including a first groove extending in a first direction,
the forming of the oxide semiconductor layer (C) includes forming an oxide semiconductor etch stop layer from the oxide semiconductor film extending in the first direction when viewed from a normal direction of the substrate in a region where the first groove is to be formed,
the forming of the interlayer insulating layer (E) includes forming a groove that exposes part of the oxide semiconductor etch stop layer in the organic insulating layer and inorganic insulating layer in the region where the first groove is to be formed, the groove extending in the first direction when viewed from the normal direction of the substrate,
the forming of the third metal layer (F) includes etching the third conductive film and also etching at least the part of the oxide semiconductor etch stop layer, and by the etching at least the part of the oxide semiconductor etch stop layer, part of the gate insulating layer is exposed inside the groove in the region where the first groove is to be formed, and
the forming of the first dielectric layer (G) includes forming an insulating layer from the first dielectric film being in contact with the part of the gate insulating layer in the region where the first groove is to be formed, an edge portion of the insulating layer being located between the interlayer insulating layer and the gate insulating layer.