Fujitsu Corporation

Shoshin Miura

Toyoshi Kawada

Kazuhiro Takahara

Masayuki Wakitani

Kenichi Oki

Tetsuya Kobayashi

Hisashi Yamaguchi

Tsutae Shinoda

Kazuo Yoshikawa

Hideaki Takizawa

Tadashi Hasegawa

Shizuo Andoh

Keizo Kurahashi

Seii Sato

Takayuki Hoshiya

Yoshinori Miyashita

Sei Sato

Hiroyuki Gondo

Kurahashi Keizo

Shintaro Kisumi

An EL device having an electrode arrangement including first electrodes and at least one row of second electrodes intersecting the first electrodes and energized by a combination of the first and second electrodes. The second electrodes are divided into a plurality of sub-electrode portions. The electrode arrangement is such that the first electrodes each comprise a plurality of segments that are commonly-connected and intersect different sub-electrode portions. Another electrode arrangement is such that the first electrodes are arranged in a belt form and intersect different sub-electrodes portions in a meander manner. The EL device can be applied to an electrophotographic printing system as an optical system for forming a latent image. EL elements are repeatedly energized with the same data to give a sufficient intensity of light on a light sensitive medium, and deenergized for a time in which the intensity is decreased to a low level.

Electro luminescence device and electrophotographic printing system

A thin-film EL display device incorporates a MOS active matrix. Each of the MOS transistor arrays is additionally provided in parallel with a Zener diode for the purpose of protecting the device from a high voltage. This Zener diode has a breakdown voltage characteristic corresponding to a difference between a luminous voltage and a non-luminous voltage of an EL display element and clamps the voltage across the MOS transistor, in the 'OFF' state, to a voltage less than or equal to non-recoverable breakdown voltage.

El display device

An AC memory driving type self-shift type gas discharge panel prevents accidental abnormal discharges caused by deviated abnormal charges. Abnormal charges are significantly accumulated at both ends of a shift channel consisting of a regular arrangement of a write discharge cell and shift discharge cells. Therefore, conductive layers are provided adjacent to at least both ends of the shift channel in order to dissipate the abormal charges.

Self-shift type gas discharge panel

Growing community of inventors

Kobe, Japan

Shoshin Miura