Patent ID: 8492959
Filing Date: 2013-07-23
Classification: C08K,C09J,F04B,H01G,H01L,Y10T

Abstract:
1. A bonding structure comprising: a metal plate; a piezoelectric body including an electrode provided on a side of the piezoelectric body opposed to the metal plate; and an electrically conductive adhesive including carbon black as an electrically conductive aid and bonding the metal plate and the electrode of the piezoelectric body to one another so as to provide electrical conductivity therebetween; wherein the electrically conductive adhesive before hardening includes carbon black having a nano-level average particle size, and is in a paste form in a solventless or solvent-based resin so that the carbon black forms an aggregate with an average particle size of about 1 μm to about 50 μm; and the bonding structure is configured by applying the electrically conductive adhesive in the paste form between the metal plate and the electrode of the piezoelectric body, subjecting the metal plate and the piezoelectric body to heating and pressurization to deform the carbon black aggregate, and hardening the electrically conductive adhesive.