Display assembly including an electro-optical cell and a photovoltaic cell
US6731351B2 · kind B2 · utility
8Cited by
14References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Nov 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display assembly is disclosed including an electro-optical cell (28), for example a liquid crystal cell, and a photovoltaic cell (61) acting as a back reflector. In order to improve the aesthetic appearance of the display, the photovoltaic cell (61) reflects predetermined wavelengths and thus exhibits a desired color in the transparent zones (90) of the electro-optical cell. In particular, the reflected light can be colored by reflection onto a multi-layered reflective filter including a transparent electrode (69) of the photovoltaic cell. This cell may form part of the dial of a watch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.