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:
Mar. 09, 2021
Filed:
Jul. 09, 2019
Samsung Display Co., Ltd., Yongin-si, KR;
Dongwoo Fine-chem Co., Ltd., Iksan-si, KR;
Bong Kyun Kim, Hwaseong-si, KR;
Jin Suek Kim, Daejeon, KR;
Seung Bo Shim, Asan-si, KR;
Shin Hyuk Choi, Suwon-si, KR;
Seung Hee Kim, Asan-si, KR;
Dong Hee Lee, Hwaseong-si, KR;
In Seol Kuk, Jeonju-si, KR;
Beom Soo Kim, Seoul, KR;
Sang Tae Kim, Iksan-si, KR;
Young Chul Park, Cheonan-si, KR;
Young Jin Yoon, Jeonju-si, KR;
Dae Sung Lim, Jeonju-si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An etchant composition may include: a peroxosulfate; a cyclic amine compound; a first amphoteric compound including a carboxyl group; and a second amphoteric compound including a sulfone group, wherein the second amphoteric compound may be different from the first amphoteric compound.