Organic light emitting diode display
US11264591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2019 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | May 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/879
Abstract
A light emitting diode display includes: a substrate; a light emitting element on the substrate; and a capping layer on the organic light emitting element and including a plurality of refractive layers each including a low refraction layer and a high refraction layer, wherein the high refraction layer includes a first inorganic material having a refractive index which is equal to or greater than about 1.7 and equal to or less than about 6.0, wherein the low refraction layer includes a second inorganic material having a refractive index which is equal to or greater than about 1.0 and equal to or less than about 1.7, and wherein the second inorganic material comprises at least one selected from LiF, AlF3, NaF, KF, RbF, CaF2, SrF2, and YbF2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.