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:
Jul. 16, 2013
Filed:
Jun. 07, 2011
Won-ho Cho, Gyeongsangbuk-do, KR;
Gyoo-chul JO, Gyeonggi-do, KR;
Gue-tai Lee, Gyeongsangbuk-do, KR;
Jin-gyu Kang, Incheon, KR;
Beung-hwa Jeong, Gyeongsangbuk-do, KR;
Jin-young Kim, Incheon, KR;
Won-Ho Cho, Gyeongsangbuk-do, KR;
Gyoo-Chul Jo, Gyeonggi-do, KR;
Gue-Tai Lee, Gyeongsangbuk-do, KR;
Jin-Gyu Kang, Incheon, KR;
Beung-Hwa Jeong, Gyeongsangbuk-do, KR;
Jin-Young Kim, Incheon, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
An etchant for forming double-layered signal lines and electrodes of a liquid crystal display device includes hydrogen peroxide (HO), a phosphate, F-ions, an organic acid having a carboxyl group (—COOH), a copper (Cu) inhibitor, and a hydrogen peroxide (HO) stabilizer, wherein each of the double-layered signal lines and electrodes of the liquid crystal display device includes a first layer of one of aluminum (Al), aluminum alloy (Al-alloy), titanium (Ti), titanium alloy (Ti-alloy), tantalum (Ta), and a tantalum alloy (Ta-alloy) and a second layer of copper (Cu).