Sheet-like source light device and liquid crystal display device using the same
US6419369B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sheet-like light source device includes a light-conducting plate, at least one rod-like light source arranged to be adjacent to a light incidence surface, a tubular reflecting member covering the rod-like light source, a planar reflecting member disposed proximate to a position facing a lower surface of the light-conducting plate, and a holding member housing the light-conducting plate, the light source and both of the reflecting members. A stepped portion is provided on the holding member to contact a part of a side of the light-conducting plate on which the rod-like light source is arranged, with the holding member. A distance between the light-conducting plate and the holding member on the stepped portion is made narrower than a distance between an opening portion of the tubular reflecting member and the light-conducting plate. It is possible to obtain a sheet-like light source device which can ensure high impact resistance even if the device is large in size, which can be manufactured at a low cost and which can suppress the occurrence of uneven brightness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.