Patent ID: 7261792

Claim:
A method of producing a piezoelectric component comprising the steps of: forming a plurality of piezoelectric elements each having a vibrating portion and a bump on a substrate; mounting the plurality piezoelectric elements on a mounting substrate having external terminals via the bumps by flip chip bonding such that the vibrating portions are opposed to the mounting substrate; arranging a resin film on the mounting substrate having the plurality of piezoelectric elements mounted thereon; sealing the plurality of piezoelectric elements by embedding the resin film between adjacent ones of the piezoelectric elements mounted on the mounting substrate; hardening the resin film; and splitting the mounting substrate by dicing to form individual piezoelectric components; wherein the sealing step includes a step of hot-press bonding in which the resin film is heated, softened, and simultaneously pressed by a roller; and a height d of one of the plurality of piezoelectric components, a volume V of said one of the plurality of piezoelectric elements including the bumps and the gap between said one of the plurality of piezoelectric elements and the mounting substrate, a number n of piezoelectric elements per unit area on the mounting substrate, a thickness t 1 of the resin film, and an average thickness t 2 of the mounting substrate (cross-sectional area/length of substrate) have a relationship expressed by 0.8<d/(nV+t 1 +t 2 )<1.1.