Organic light emitting display apparatus
US10644266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Nov 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An organic light emitting display apparatus includes a substrate, a plurality of organic light emitting elements on the substrate, an encapsulation substrate covering the organic light emitting elements, and a scattering layer including a resin, and a plurality of scattering particles distributed in the resin, and including a variety of particle sizes in a first range from about 500 nm to about 800 nm, wherein ones of the scattering particles having a first particle size include a highest concentration of the scattering particles, and wherein a concentration of other ones of the scattering particles is inversely proportional to a magnitude of a difference in particle size between the other ones of the scattering particles and the ones of the scattering particles having the first particle size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.