| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface treating agent and a surface treatment method which enable a chemical conversion coating film having excellent oxidation resistance and corrosion resistance to be formed on a surface of copper or copper alloy, and to provide a film substrate or a glass substrate in which the chemical conversion coating film is formed on the surface of copper or copper alloy by bringing the surface treating agent into contact with the surface of copper or copper alloy, and a transparent electrode substrate in which the film substrate or the glass substrate is affixed to an insulator layer with transparent self-adhesive.SOLUTION: This surface treating agent for copper or copper alloy is used, which contains tetrazole compound expressed by chemical formula (I) and/or its salt, and ammonium. In the formula, R denotes an alkyl group or a cyclopropyl group of carbon number 1-3. |
