Light emitting device and display apparatus including the same
US12274123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2022 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Apr 8, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/331
Abstract
A light emitting device includes: a first electrode; a hole transport region disposed on the first electrode; a first emission layer disposed on the hole transport region, and which emits light of a first wavelength; a second emission layer disposed on the hole transport region, and which emits light of a second wavelength different from the first wavelength; an electron transport region disposed on the first emission layer and the second emission layer; a second electrode disposed on the electron transport region; and a capping layer disposed on the second electrode. In exit light emitted to an upper surface of the capping layer, the exit light has a maximum intensity at an azimuth angle of about 25° to about 35°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.