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.
Patent No.:
Date of Patent:
Aug. 11, 2026
Filed:
Jul. 27, 2022
Applicants:
Dongwoo Fine-chem Co., Ltd., Iksan-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Inventors:
Jin-Kyu Roh, Gangbuk-gu, KR;
Ji-Won Kim, Iksan-si, KR;
Kyu-Sang Ahn, Yeongdeungpo-gu, KR;
Hee-Suk Woo, Hwaseong-si, KR;
Jung-Min Oh, Hwaseong-si, KR;
Sang-Won Bae, Hwaseong-si, KR;
Hyo-San Lee, Hwaseong-si, KR;
Assignees:
Dongwoo Fine-Chem Co., Ltd., Iksan-si, KR;
Samsung Electronics CO., LTD., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 13/00 (2006.01); H10P 50/64 (2026.01); H10P 50/66 (2026.01);
U.S. Cl.
CPC ...
C09K 13/00 (2013.01); H10P 50/642 (2026.01); H10P 50/667 (2026.01);
Abstract
An etchant composition contains (A) an alkaline compound, (B) an organoaluminum, and (C) water. The composition may be used in a method of forming a pattern. The composition also may be used in a method of fabricating an array substrate.