Matsushita Electric Works, Ltd.

Tatsuhiko Irie

Takeshi Matsumoto

Shigenari Takami

Shuichiroh Yamaguchi

Yukio Idaka

Jiro Hashizume

Yoshimasa Himura

Mitsuhiro Kani

Nobolu Yamaguchi

A semiconductor device includes a circuit pattern of a conductive thin film formed on a ceramic substrate by means of an etching, and an IC chip connected to the etched circuit pattern through a gang-bonding in which respective pads of conduction parts of the circuit pattern and of the IC chip directly contact with each other. The circuit pattern can be thereby provided densely, and contributive to a higher integration of the IC chip.

Semiconductor device

A light receiving element is formed by a plurality of light receiving cells connected in series with one another and arranged for optical coupling to a light source, the cells having respectively a surface area varied depending on light input intensity from the light source. The light receiving cells are thereby made to maintain excellent light receiving efficiency without causing optical loss at any one of them.

Light receiving element

Growing community of inventors

Kadoma, Japan

Tatsuhiko Irie