Patent · US Expired

Thin-film EL image display panel with power saving features

US4338598A · kind A · utility

24Cited by

3References

3Claims

0Family size

Assignee

SHARP KABUSHIKI KAISHA · JP

Inventors

Toshihiro Ohba · Nara, JP
Shuhei Yasuda · Nara, JP
Yoshiharu Kanatani · Tenri, JP

Key dates

Filing date	Jan 7, 1980
Grant date	Jul 6, 1982
Priority date	—
Expiry date	Jan 7, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG09G2310/0275
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A thin-film EL display panel has a plurality of scanning side electrodes and a plurality of data side electrodes. The thin-film EL display panel is excited to emit light through a pre-charge mode, a discharge modulation mode and a write mode. A voltage lower than a modulation voltage is supplied from the data side electrodes to the thin-film EL display panel as a first pre-charge voltage. Thereafter, a difference voltage between the first pre-charge voltage and the modulation voltage is supplied from the scanning side electrodes to the panel as a second pre-charge voltage, thus reducing power consumption to a minimum during the pre-charge mode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.