Display device
US9823507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2013 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Feb 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display device, according to an embodiment of the present disclosure, includes a substrate, a light emitting unit comprising a light emitting element mounted on the substrate and a lens placed on the upper side of the light-emitting element, a reflective layer arranged on the upper surface of the substrate, an optical sheet arranged on the upper side of the reflective layer and disposed at a height spaced apart from the light emitting unit; and a display panel placed on the upper surface of the optical sheet, wherein a center portion of the upper surface of the lens is recessed at a predetermined depth and formed in the shape of a continuous straight line, and the upper surface thereof has an aspheric shape that is curved at a predetermined curvature from the center portion toward the edges, so as to have an anisotropic distribution of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.