Display apparatus including layer with a plurality of parts having different electrical conductivities on emission layers
US12232387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2021 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Feb 25, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/331
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display apparatus includes: a first pixel electrode of a first pixel; a second pixel electrode of a second pixel adjacent to the first pixel, the first and second pixels to emit light of different colors from each other; a first lower emission layer on the first pixel electrode; a second lower emission layer on the second pixel electrode; a first upper emission layer on the first lower emission layer; a second upper emission layer on the second lower emission layer; a charge generation layer between the first lower emission layer and the first upper emission layer, and between the second lower emission layer and the second upper emission layer; and a counter electrode extending across the first upper emission layer and the second upper emission layer. The charge generation layer includes first and second parts, and electrical conductivities of the first and second parts are different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.