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:
Jun. 28, 2011
Filed:
Apr. 29, 2009
Young-joo Choi, Jeollanam-do, KR;
Bong-kyun Kim, Incheon-si, KR;
Byeong-jin Lee, Seoul, KR;
Jong-hyun Choung, Hwaseong-si, KR;
Sun-young Hong, Yongin-si, KR;
Nam-seok Suh, Yongin-si, KR;
Hong-sick Park, Suwon-si, KR;
Ky-sub Kim, Jeonju-si, KR;
Seung-yong Lee, Daejeon, KR;
Joon-woo Lee, Jeonju-si, KR;
Young-chul Park, Iksan-si, KR;
Young-jun Jin, Iksan-si, KR;
Seung-jae Yang, Jeonju-si, KR;
Hyun-kyu Lee, Iksan-si, KR;
Sang-hoon Jang, Jeonju-si, KR;
Min-ki Lim, Iksan-si, KR;
Young-Joo Choi, Jeollanam-do, KR;
Bong-Kyun Kim, Incheon-si, KR;
Byeong-Jin Lee, Seoul, KR;
Jong-Hyun Choung, Hwaseong-si, KR;
Sun-Young Hong, Yongin-si, KR;
Nam-Seok Suh, Yongin-si, KR;
Hong-Sick Park, Suwon-si, KR;
Ky-Sub Kim, Jeonju-si, KR;
Seung-Yong Lee, Daejeon, KR;
Joon-Woo Lee, Jeonju-si, KR;
Young-Chul Park, Iksan-si, KR;
Young-Jun Jin, Iksan-si, KR;
Seung-Jae Yang, Jeonju-si, KR;
Hyun-Kyu Lee, Iksan-si, KR;
Sang-Hoon Jang, Jeonju-si, KR;
Min-Ki Lim, Iksan-si, KR;
Samsung Electronics, Co., Ltd., Suwon-Si, KR;
Dongwoo Fine-Chem Co., Ltd., Iksan-Si, KR;
Abstract
An etchant composition is provided. The etchant composition includes about 40 to about 65 wt % of phosphoric acid, about 2 to about 5 wt % of nitric acid, about 2 to about 20 wt % of acetic acid, about 0.1 to about 2 wt % of a compound containing phosphate, about 0.1 to about 2 wt % of a compound simultaneously containing an amino group and a carboxyl group, and a remaining weight percent of water for the total weight of the composition.