The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 03, 2023

Filed:

Jan. 11, 2023
Applicant:

Sharp Display Technology Corporation, Kameyama, JP;

Inventors:

Tadayoshi Miyamoto, Kameyama, JP;

Yoshitaka Koyama, Kameyama, JP;

Yoshinobu Nakamura, Kameyama, JP;

Toshihiro Kaneko, Kameyama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1362 (2006.01); H01L 27/12 (2006.01); G02F 1/1368 (2006.01);
U.S. Cl.
CPC ...
G02F 1/136286 (2013.01); G02F 1/1368 (2013.01); H01L 27/124 (2013.01); H01L 27/1225 (2013.01);
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.


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Miyamoto, Tadayoshi. (2023). Active matrix substrate and liquid crystal display device (U.S. Patent No. 11774819). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11774819

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