PLZT multi-shutter color electrode pattern
US4744640A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1985 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Aug 29, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0551
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optic display having either variable-color or selectable-color capability is disclosed, with each having particularly efficient electrode patterns for achieving color control. Each implements a passive display utilizing an electro-optic material such as PLZT having one of these types of electrode patterns and aligned with an appropriate multi-colored filter. By applying D.C. control voltages to these sets of electrodes, which are sufficiently small to form unit cells, variable or selectable color is perceived. The patterns may be arranged in a sequence of any length or width, with the three-shutter pattern featuring no surface-mounted crossovers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.