Character display panels and panel devices
US4547773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1983 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Jan 19, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-character multi-segment electrically addressable display panel. Character segments are defined at each of a number of adjacent locations by the overlap of two sets of electrodes. The electrodes of one set are each associated with a location and a group of one or more segments. The electrodes of the other set extend across each location and are associated with no more than one segment in each segment group. The panel is addressed using isogonal signals, e.g. pseudo-random binary sequence coded signals. The panel medium may be of dyed or undyed cholesteric-to-nematic phase change effect liquid crystal material, of low threshold or wide temperature range liquid crystal material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.