Organic light emitting device
US10529945B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jul 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; a first hole-transporting layer (105A) comprising a first conjugated hole-transporting polymer between the anode and the light-emitting layer; and a second hole-transporting layer (105B) comprising a second conjugated hole-transporting polymer between the first hole-transporting layer and the light-emitting layer, wherein a lowest excited state energy level of the first hole-transporting polymer is lower than the lowest excited state energy of the second hole-transporting polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.