Patent · US Expired

Electrochromic display cell I

US4508430A · kind A · utility

6Cited by

1References

19Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Helmut Freller · Westerburg, DE
Friedrich Horauf · Nuremberg, DE
Hans Lorenz · Darmstadt, DE
Konrad Mund

Key dates

Filing date	Sep 21, 1982
Grant date	Apr 2, 1985
Priority date	—
Expiry date	Sep 21, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/1524
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An electrochromic display cell is described which has a front electrode of tungsten trioxide layered on a support surface and a rear electrode of titanium nitride layered on a support surface. The rest potential and large capacity of the rear electrode permit a fast image cycle time at the front electrode and obviate the need to reverse potential polarity during cycling.

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