Display device and electronic watch
US6519209B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Mar 3, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a display device, a light ray transmitted through an area which varies a polarization axis, and a light ray transmitted through an area which does not vary the polarization axis, respectively, become a linearly polarized light component (a first returning light ray) which is a specularly reflected from a specular reflecting element, and transmitted through a second polarization separator, a polarization changing element, and a first polarization separator, and a linearly polarized light component (a second returning light ray) which is specularly reflected by the second polarization separator, and transmitted through the polarization changing element and the first polarization separator. The first and second returning light rays present a background portion and a segment portion in a bright display. Both the first returning light ray and the second returning light ray are specularly reflected, presenting both the background portion and the segment portion in a mirror-like fashion. Specifically, the display device may present a display mode with both the background portion and the segment portion in a mirror-like image, a display mode with both the background portion and the segm…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.