发明授权
- 专利标题: Etchant for etching double-layered copper structure and method of forming array substrate having double-layered copper structures
- 专利标题(中): 用于蚀刻双层铜结构的蚀刻剂和形成具有双层铜结构的阵列基板的方法
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申请号: US13154865申请日: 2011-06-07
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公开(公告)号: US08486739B2公开(公告)日: 2013-07-16
- 发明人: Won-Ho Cho , Gyoo-Chul Jo , Gue-Tai Lee , Jin-Gyu Kang , Beung-Hwa Jeong , Jin-Young Kim
- 申请人: Won-Ho Cho , Gyoo-Chul Jo , Gue-Tai Lee , Jin-Gyu Kang , Beung-Hwa Jeong , Jin-Young Kim
- 申请人地址: KR Seoul
- 专利权人: LG Display Co., Ltd.
- 当前专利权人: LG Display Co., Ltd.
- 当前专利权人地址: KR Seoul
- 代理机构: McKenna Long & Aldridge LLP
- 优先权: KR10-2003-0041162 20030624
- 主分类号: H01L21/84
- IPC分类号: H01L21/84
摘要:
An etchant for forming double-layered signal lines and electrodes of a liquid crystal display device includes hydrogen peroxide (H2O2), a phosphate, F-ions, an organic acid having a carboxyl group (—COOH), a copper (Cu) inhibitor, and a hydrogen peroxide (H2O2) 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).
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