Planar light source device and liquid crystal display apparatus
US10495810B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2013 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Dec 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar light source device includes at least a light guide plate and a lamp unit disposed replaceably at a side surface of the plate. The lamp unit includes: a lamp holder having a shape where a surface facing the side surface of the light guide plate is opened; an LED mounted on a flexible cable, the cable fixed on an inner surface of the lamp holder; and a shielding sheet fixed on an outer surface of the lamp holder. An upper portion of the lamp holder located close to a light emitting surface of the light guide plate does not overlap its light emitting surface when viewed from a normal direction of the light emitting surface. One end of the shielding sheet is fixed to the upper portion of the lamp holder, the other end being closely attached to the light emitting surface of the light guide plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.