Hosiden Electronics Co., Ltd.

Hosiden Corporation

Shuzo Isogami

Shigeo Aoki

Tatsuo Nagayoshi

Yasuhiro Ukai

Masaru Yasui

Mamoru Yasuda

Junichi Tamamura

Kazuo Ono

Motomi Hosoda

Kiyoshi Ohta

Kouji Nishikawa

Susumu Hirao

Toshirou Izuchi

An electret film is formed on the rear side of a front face plate of a cylindrical capsule made of aluminum . Closely in spaced opposition thereto, an electrically conductive diaphragm is held by an electrically conductive holding member. A wiring board provided behind the holding member closes the rear end of the capsule. The rear end of the capsule is bent on the rear periphery of the wiring board, and calked thereat. In the capsule, an impedance conversion IC device is connected to the electrically conductive holding member and the wiring board.

Electret condenser microphone unit

Method for frequency regulation of tuning-fork vibrator

First and second color liquid crystal display elements of the negative guest-host type are disposed in adjacent and opposing relation to each other and the color liquid crystal display elements provide display in different colors, at least one of electrodes of each color liquid crystal display element having formed therein a display pattern. By the control of a changeover switch, an alternating drive voltage is applied from a drive circuit to one of the first and second color liquid crystal display elements to change the color of a background of the display in accordance with the control of the changeover switch.

Liquid crystal display device

Growing community of inventors

Yao, Japan

Shuzo Isogami