Apparatus for use in offices etc.
US5592189A · kind A · utility
2Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Jan 7, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1334
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for use in offices includes a planar liquid crystal shutter disposed at least a portion of a surface of a housing of the apparatus, the shutter being set to a transparent state or a non-transparent state depending on an input signal supplied thereto, and a controller for applying to the shutter a control signal to control the transparent or non-transparent state thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.