Light guide plate, surface light source device, polarized light source device and liquid crystal display
US5727107A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Aug 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide plate comprises: an outgoing radiation plane; a bottom opposed to the outgoing radiation plane; and an incidence plane disposed between the outgoing radiation plane and the bottom; wherein projections or recesses are formed on the bottom along the progress direction of incident light at a regular interval, the projections or recesses have long-side and short-side faces, an projection area of the long-side face on the outgoing radiation plane is three times or more that of the short-side face on the outgoing radiation plane, the long-side face is a projection, the long-side face is placed on the incidence plane side in the case of projections, the long-side face is placed on a side opposed to the incidence plane in the case of recesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.