Organic light-emitting device
US10396296B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Feb 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organic light-emitting device includes electrodes and light-emitting units that each include an emission layer; and a charge generation layer, including n- and p-type charge generation layers, disposed between each adjacent pair of light-emitting units. A wavelength of maximum intensity of light emitted from one of the light-emitting units may be different from another, an n-type charge generation layer may have a metal-containing material having a work function of about 2.0 eV to about 4.5 eV, and a p-type charge generation layer may be formed of a hole transport material, an absolute value of a HOMO energy level of the hole transport material being greater than about 5.5 eV, and an absolute value of a LUMO energy level of the hole transport material being less than that of a LUMO energy level of a hole transport layer of a light-emitting unit adjacent to the p-type charge generation layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.