Enhanced privacy switchable backlight system
US10663776B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2380/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display component controls a viewing angle in a display system that achieves a strong private mode and enhanced brightness in the private and public modes as compared to conventional configurations. A display system that is operable in the private mode and the public mode includes the display component in combination with an image panel. The display component includes a backlight unit that emits light from a non-viewing side of the display component toward a viewing side of the display component; a barrier and slit structure located on a viewing side of the backlight unit, the barrier and slit structure comprising a plurality of opaque barrier regions interspersed with a plurality of transparent slit regions; and a lens array of lens elements located on a viewing side of the barrier and slit structure, with the lens elements being located in a separate plane relative to the barrier regions, wherein the barrier and slit structure and the lens array operate to transmit light from the backlight unit collimated in a limited viewing angle range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.