ELECTRICALLY CONDUCTIVE PASTE AND WIRING BOARD USING THE SAME

• Main Authors: YAMADA, Maki, Aoyama, Yukito, Katsumata, Rie
• Format: Patent
• Language: English
• Published: 20.06.2019
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CABLES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CONDUCTORS; CORRECTING FLUIDS; DYES; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FILLING PASTES; INKS; INSULATORS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

An electrically conductive paste contains: metal nanoparticles which are protected by an organic compound containing an amino group and have an average particle diameter of 30 nm to 400 nm; metal particles which are protected by a higher fatty acid and have an average particle diameter of 1 μm to 5 μm; an organic solvent; and a resin component consisting of a cellulose derivative. A conductor obtained by firing the electrically conductive paste has a film thickness of 30 μm or more and a specific resistance of 5.0×10−6 Ω·cm or less. In this way, the electrically conductive paste can reduce the resistance of the obtained conductor and to increase the amount of current flowing. A wiring board includes a conductor obtained from the electrically conductive paste.