The Procter Gamble Company

Fujikura Limited

Hayato Arai

Makoto Isono

Ryoichi Tomishima

Naoki Takayama

Tatsuya Shioiri

Mari Yanagida

Hiroo Noguchi

A differential pressure detection element includes: a support portion having an opening; a cantilever portion supported in a cantilever manner by the support portion so as to protrude into the opening; a diffusion layer including a piezoresistive portion provided at a fixed end of the cantilever portion; a pair of wiring portions electrically connected to the diffusion layer; a first insulating layer covering the diffusion layer; and a second insulating layer laid on the first insulating layer. A linear expansion coefficient of the first insulating layer is smaller than a linear expansion coefficient of a material of which the cantilever portion is composed, and a linear expansion coefficient of the second insulating layer is larger than the linear expansion coefficient of the first insulating layer.

Differential pressure detection element, flow rate measurement device, and method of manufacturing differential pressure detection element

Spray container

Growing community of inventors

Chiba, Japan

Hayato Arai