Electronically switchable privacy film and display device having same
US9229253B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Dec 24, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2213/001
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronically switchable privacy films suitable for use in display devices are described. The electronically switchable privacy film comprises a pair of mutually opposing transparent electrodes; an optically transparent microstructured layer disposed between the transparent electrodes, the microstructured layer comprising a plurality of microstructured ribs extending across a surface thereof such that the microstructured ribs form an alternating series of ribs and channels; and electronically switchable material disposed in the channels, the electronically switchable material being capable of modulation between high and low absorption states upon application of an electric field across the transparent electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.