Light guide body, lighting device, liquid crystal display device, and electronic device
US7267471B2 · kind B2 · utility
4Cited by
11References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Jan 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0043
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a light guide body, a flat part is provided at an edge part of a fluorescent tube vicinal part (part that receives strong light), and a pear-skin texture pattern having a sine wave shape boundary is formed inside the flat part. Therefore, it is possible to alternately provide, along a direction to which the fluorescent tube extends, small pear-skin texture regions and small flat regions. In certain example embodiments, scattering intensity of the light guide body is set so that it becomes stronger gradually from the edge part close to the fluorescent tube toward the inside far from the fluorescent tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.