Patent ID: 8471441
Filing Date: 2013-06-25
Classification: H01L,H03H,Y10T

Abstract:
1. A piezoelectric component comprising: a piezoelectric substrate; a comb electrode formed on a main surface of the piezoelectric substrate; a piezoelectric device composed of wiring electrodes disposed adjacent to the comb electrode; an insulation layer formed on an upper surface of the piezoelectric sections; a rewiring layer formed on an upper surface of the insulation layer; a protective film layer that is composed of an inorganic material and that covers the entire upper surface of the rewiring layer excluding the comb electrode; an outer periphery wall section formed by laminating a photosensitive resin film onto the protective film layer; a ceiling section formed by laminating the photosensitive resin film onto top openings of the outer periphery wall section; and electrode posts formed so as to pass through the outer periphery wall section and the ceiling section, wherein; said photosensitive resin film is composed of a photosensitive resin to which is added an inorganic nano filler with a mean particle size of 1.0 nm or less, and has an elastic modulus of 3.0 GPa or greater.