公开(公告)号：US20250133829A1

公开(公告)日：2025-04-24

申请号：US18902923

申请日：2024-10-01

Applicant: Sharp Display Technology Corporation

Inventor： Toshihiro KANEKO ,  Yoshinobu Nakamura ,  Tadayoshi Miyamoto

IPC: H01L27/12 ,  G02F1/1362 ,  G02F1/1368

Abstract: An array substrate includes: a semiconductor film disposed on an upper-layer side of an insulating substrate; a gate insulating film disposed in a layer above the semiconductor film; a gate electrode disposed in a layer above the gate insulating film; an interlayer insulating film disposed in a layer above the gate electrode; a thin film transistor including a source electrode and a drain electrode disposed on the upper-layer side of the gate electrode via the interlayer insulating film; and a gate wiring line continuously formed with the gate electrode of the thin film transistor, wherein the gate electrode and the gate wiring line include an aluminum film, and a protective metal film made of a metal material having a melting point higher than a melting point of aluminum, and covering an entire surface of the aluminum film.

公开(公告)号：US11774819B2

公开(公告)日：2023-10-03

申请号：US18095821

申请日：2023-01-11

Applicant: Sharp Display Technology Corporation

Inventor： Tadayoshi Miyamoto ,  Yoshitaka Koyama ,  Yoshinobu Nakamura ,  Toshihiro Kaneko

IPC: G02F1/1362 ,  H01L27/12 ,  G02F1/1368

CPC classification number: G02F1/136286 ,  G02F1/1368 ,  H01L27/124 ,  H01L27/1225

Abstract: An active matrix substrate includes, in each pixel region, a pixel TFT of an oxide semiconductor layer having source and drain regions, a first insulating layer disposed on top of the oxide semiconductor layer, an extraction electrode, disposed on top of the first insulating layer, that includes a transparent conductive film, and a pixel electrode connected to the extraction electrode. The first insulating layer includes first and second contact holes located above the source and drain regions, respectively. Part of a source bus line overlaps part of the source region and is connected to the source region via the first contact hole. The extraction electrode is connected to the drain region via the second contact hole. Shapes of bottoms of the first and second contact holes are different from each other, and the shape of the bottom of the second contact hole includes two orthogonal sides.