| 摘要 |
PURPOSE:To make a process effective and to prevent migration of silver from occurring by using carbon resist ink to form a transparent conductive pattern on an insulated transparent sheet. CONSTITUTION:Carbon resist ink, which has conductivity and is excellent in acid-proof and alkali-proof properties, is used to print a circuit pattern on a surface of a transparent conductive film which is a transparent conductive film formed on an insulated transparent sheet 4. Further, etching resist ink is used to print a contact pattern 3A on this film. In succession, an aqueous solution of 40 B ferric chloride is used to perform etching of this sheet, and the etching resist is peeled by rinsing. Thereafter, rinsing is performed and succeeded by drying. Accordingly solder pattern printing is omitted to shorten a manufacturing process of this pattern, and silver migration at high temperature and high humidity can be prevented from occurring.
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