Backlight module with point light source having light guide portion
US7677783B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 5, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Dec 20, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An exemplary point light source (20) includes a light emitting body (230), and a light guide portion (210) adjacent the light emitting body. The light emitting body includes an illuminating portion configured for providing light beams, and a shell packaging the illuminating portion. The light guide portion is configured for guiding the light beams to propagate in desired directions. A size of a cross-section of the light guide portion far away from the light emitting body is less than a size of a cross-section of the light guide portion adjacent to the light emitting body. A backlight module (200) using the point light source is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.