Light emitting module, surface light source, liquid crystal display, and illuminating device
US9091882B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2010 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Jul 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133609
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The purpose of the present invention is providing a light emitting module capable of emitting illumination light having a nearly uniform color tone as a whole. The invention also provides a surface light source having such light emitting modules, and a liquid crystal display and an illuminating device having such a surface light source.In a light emitting module (50), adjacent dot light sources (17, 17) satisfy the relationships ΔX1+ΔX2=ΔX×2 and ΔY1+ΔY2=ΔY×2, so that the resultant mixed color can fall within a target chromaticity rank area (M), and the center (gc) of a first chromaticity rank area g and the center (Ec) of a second chromaticity rank area (E) are axisymmetric with respect to virtual straight lines (gE1, gE2) that pass through the center (Mc) of the target chromaticity rank area (M) and parallel to one side or another side of the target chromaticity rank area (M).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.