Mitsubishi Denki Kabushiki Kaisha

Ise Electronics Corporation

Norihiro Ichikawa

Zenichiro Hara

Nobuo Terazaki

Kazunori Tatsuda

Hiroshi Kamogawa

Shuji Iwata

Shunichi Futatsuishi

Masaaki Kobayashi

Mitsuru Masuda

Shiji Iwata

A light source display tube arranged in matrix form in one plane as a unit element to constitute a large screen display device, where a stray path for electrons emitted from the cathode is eliminated, and concentration of the electric field of the control grid disturbing the electron flow is prevented, thereby pseudo light emission is prevented and electrical trouble is minimized in simple fashion.

Light source display tube

A fluorescent display apparatus as a constituent of picture elements of a large-screen display apparatus which is provided with control electrodes for controlling courses of thermoelectrons emitted from cathodes, thereby decreasing fluctuation in brightness of a fluorescent display cell emitting light upon being bombarded by the electrons and preventing the electrons from bombarding other than predetermined fluorescent display cell with result of no emission of false light.

Fluorescent display apparatus

Growing community of inventors

Nagasaki, Japan

Norihiro Ichikawa