Patent · US Expired

LC matrix display with measuring net

US4741600A · kind A · utility

4Cited by

8References

2Claims

0Family size

Assignee

Iskra-Sozd Elektrokovinske Industrije N, Sol.O · SI

Inventors

Janez Pirs · Ljubljana, SI
Bojan Marin · Ljubljana, SI
Igor Musevic · Ljubljana, SI
Silva Pirs · Ljubljana, SI
Andrej Gartner · Ljubljana, SI

Key dates

Filing date	Nov 5, 1986
Grant date	May 3, 1988
Priority date	—
Expiry date	Nov 5, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/02
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a LC matrix display with an internal reflector and an internal measuring reticle metal electrodes made of chromium, nickel, aluminum or some other metal are used as the internal reflector. By a special configuration of electrodes it is achieved that the measuring reticle is formed in the LC layer itself as a consequence of the optical effects in the liquid crystal. By building in an internal reflector and an internal measuring reticle any parallax is removed when observing the signal curve as well as the measuring reticle and, additionally, a maximum viewing angle is assured.

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