Thin backlight system and liquid crystal display device using the same
US8810752B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 21, 2009 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | May 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133622
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A thin backlight system includes: a light emitting section emitting lights that have different dominant wavelengths; and a plurality of light transmitting portions, the thin backlight system deflecting the lights and then converging the lights on the plurality of light transmitting portions. The thin backlight system further includes: an imaging optical system provided to face surfaces, of the plurality of light transmitting portions, on which the lights are converged. The imaging optical system including a plurality of identical lenses arranged in a vertical and/or a horizontal direction at a pitch determined by multiplying a pitch at which the plurality of light transmitting portions are arranged in a vertical and/or a horizontal direction by the number of types of the different dominant wavelengths and being configured to converge the lights from the light emitting section on light transmitting portions to which the different dominant wavelengths of the lights correspond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.