Capping layer for tandem structure and display device having the same
US11844257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2021 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Jul 31, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
A display device includes a first pixel area including a first pixel electrode and a first organic light emitting layer, a tandem pixel area including a tandem pixel electrode, a first tandem organic light emitting layer and a second tandem organic light emitting layer, a capping layer including a first capping layer corresponding to the first organic light emitting layer and a tandem capping layer corresponding to both the first tandem organic light emitting layer and the second tandem organic light emitting layer, and a common electrode between the first capping layer and the first organic light emitting layer and between the tandem capping layer and the second tandem organic light emitting layer. Each of the first capping layer and the tandem capping layer has a thickness, and the thickness of the tandem capping layer is smaller than the thickness of the first capping layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.