Organic electroluminescent device and display device
US10490764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Aug 4, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
The present disclosure provides an organic electroluminescent device and a display device. The material of the blue light emitting layer in the organic electroluminescent device comprises an electron transport material and a hole transport material that can form a blue light exciplex. The proportions respectively occupied by the electron transport material and the hole transport material of the blue light emitting layer in all materials of the blue light emitting layer match with the abilities of the red light emitting layer and the green light emitting layer to transport electrons, so that electrons and holes would not recombine within and at an edge of the portion of the blue light emitting layer that covers the red light emitting layer and the green light emitting layer when the red light emitting layer and/or the green light emitting layer is required to emit light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.