Display device and display control method
US10616564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2016 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Oct 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2213/001
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device has a display panel (70) and a color filter layer (72) spaced from the display panel, comprising an array of color filter portions. In a privacy mode (narrow viewing angle mode), the display panel produces output regions of different light output color, which regions are aligned with corresponding color portions of the color filter layer. In a public mode (wide viewing angle mode) the display panel produces light containing all of the output colors to all of the output regions. By providing a color filter layer spaced from the display panel, color filtering is used to control the range of angles over which an image is output. The color filter layer is in essence moved away from the display panel. The spacing between the two and the width of the color filter portions determines the extent by which the light output is angularly limited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.