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. 28, 2009
Filed:
Feb. 02, 2007
Sai-chang Liu, Kaohsiung County, TW;
Cheng-tzu Yang, Hsinchu County, TW;
Chien-wei Wu, Hsinchu County, TW;
Shuo-wei Liang, Taipei County, TW;
Sai-Chang Liu, Kaohsiung County, TW;
Cheng-Tzu Yang, Hsinchu County, TW;
Chien-Wei Wu, Hsinchu County, TW;
Shuo-Wei Liang, Taipei County, TW;
Taiwan TFT LCD Association, Hsinchu, TW;
Chunghwa Picture Tubes, Ltd., Taoyuan, TW;
Au Optronics Corporation, Hsinchu, TW;
Hannstar Display Corporation, Tao-Yuan Hsien, TW;
Chi Mei Optoelectronics Corporation, Tainan County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
TPO Display Corp., Miao-Li County, TW;
Abstract
An etchant for patterning composite layer containing copper is provided. The etchant includes peracetic acid being about 5% to 40% by weight and serving as a major component, a peracetic acid stabilizer being about 5% to 15% by weight, an organic acid being about 5% to 10% by weight, an inorganic acid being about 5% to 15% by weight, a salt being about 8% to 15% by weight, which are based on the total weight of the etchant.