Parallax barrier, display, passive polarisation modulating optical element and method of making such an element
US6046849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Sep 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/363
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A parallax barrier includes a polarisation modifying layer having aperture regions, for supplying light of a second polarisation when receiving light of a first polarisation, separated by barrier regions, for supplying light of a third polarisation different from the second polarisation when receiving light of the first polarisation, and a polariser selectively operable in a first mode and a second mode. At least one of the aperture regions and the barrier regions alters the polarisation of light passing therethrough. The polariser passes light of the second polarisation and blocks light of the third polarisation in the first mode and passes light of the third polarisation in the second mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.