Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector
US5608550A · kind A · utility
268Cited by
23References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1996 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133616
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A front-lit display, having a ridged transparent film thereon. The ridges on the film bend glancing light rays down into the display. The light rays are reflected by a reflector below the display, pass back through the display, and exit the film in a direction substantially normal to the display. Thus, the ridged film enhances the brightness of the display for a given light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.