Organic light emitting display apparatus
US9806276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jun 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
Disclosed is an organic light emitting display (OLED) apparatus with improved efficiency and lifespan, wherein the OLED apparatus includes an anode, a cathode, and a light-emitting unit disposed in-between, wherein the light-emitting unit includes a first emission layer, and a first hole transporting layer having first and second materials, wherein the first material has a higher hole mobility than that of the second material so as to improve a transfer of holes from the first hole transporting layer to the first emission layer, and the second material has a higher triplet energy level than that of the first material so as to reduce a transfer of electrons from the first emission layer to the first hole transporting layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.