To provide one kind of conductive paste applicable to a conductive substrate and a conductive thin film.
The conductive paste for a membrane switch is constituted of flake-like metal powder (silver, aluminum, copper, and mixture of copper) by 55 to 65 wt.%, an organic solvent by 35 to 60 wt.% having a high boiling point, and organic plastic resin by 5 to 15 wt.% mainly containing saturated polyester resin, and then, a silane coupling agent, a leveling agent, a defoamer, and a thixotropic agent by only 0.5 to 5 wt.%. This conductive paste not only has extremely superior conductivity (20 mΩ/square) and adhesion to an ITO thin film and ITO glass substrate but also have passed even an environmental test under conditions such as 85°C, 85% RH, and 1,000 hours. For these reasons, the conductive paste can be applied to a touch type thin film and a touch type glass conductive circuit.
COPYRIGHT: (C)2008,JPO&INPIT
SO KANMEI
HSIAO YUNG-JEN
Hideo Sugiyama
Koichi Yuda
Uozumi Takahiro
Naohiko Teshima