Light-extraction element including raspberry-like particles
US9391299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2013 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Jan 27, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2848
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a light-extraction element, comprising a light-diffusion layer which including a resin; and a plurality of raspberry-like particles uniformly dispersed in the resin, wherein the raspberry-like particles feature a surface with a plurality of round bumps, and the plurality of raspberry-like particles are composed of a material having a single reflective index. The invention also provides a light-emitting device, including a pair of electrodes composed of an anode and a cathode; an organic light-emitting unit disposed between the pair of electrodes, wherein the organic light-emitting unit includes a light-emitting layer; and a light-extraction element which is disposed on a light-emitting surface of the light-emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.