Organic light-emitting device
US10431766B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2014 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Dec 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/30
Abstract
An organic light-emitting device and a flat panel display device, the organic-light emitting device including an anode; a cathode; and an organic layer therebetween including an emission layer, a hole transport region between the anode and the emission layer, the hole transport region including at least one of a hole injection layer, a hole transport layer, and an electron blocking layer, an electron transport region between the emission layer and the cathode, the electron transport region including at least one of a hole blocking layer, an electron transport layers and an electron injection layer, and a buffer layer between the emission layer and the electron transport region, wherein the buffer layer includes a biscarbazole-based derivative and triphenylene-based derivative, and a triplet energy (ET1) of the biscarbazole-based derivative or the triphenylene-based derivative and a triplet energy (ET2) of a dopant of the emission layer satisfy the following relationship: ET1>ET2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.