Display system with independently controlled transmissive and reflective subpixels and method of use
US9835887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2014 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Jan 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device (100) includes a display (102, 800) that is suitable for use under widely ranging lighting conditions. The display includes separately operable transmissive light modulator subpixels (402, 404, 406, 502, 504, 506, 602, 604, 606, 702, 704, 706, 808, 810, 812, 1036, 1136, 1204, 1304, 1404, 1504, 1716, 1916) that can be provided in at least three colors to provide a full color display but also includes separately operable reflective light modulator subpixels (408, 508, 608, 708, 814, 1038, 1138, 1202, 1302, 1402, 1502, 1714, 1914) that provide basic readability when light levels are so high (e.g., bright summer day) that the image presented by the transmissive light modulators would be difficult to discern. The reflective light modulators may be provided with in-pixel memory (526) so as to reduce the energy cost of providing always-on functioning for displaying certain time sensitive information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.