Organic light-emitting display apparatus and method of manufacturing the same
US12274116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2022 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Dec 8, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/00
Abstract
An organic light-emitting display apparatus and a manufacturing method thereof have improved process stability and reliability by reducing damage to the organic light-emitting display apparatus during a manufacturing process. The organic light-emitting display apparatus includes: a substrate, a plurality of pixel electrodes, a pixel defining film, a plurality of hole control layers respectively arranged on the pixel electrodes, a plurality of emission layers respectively arranged on the hole control layers, a plurality of buffer layers respectively arranged on the emission layers, each of the buffer layers having a highest occupied molecular orbital (HOMO) energy level greater than the HOMO energy level of each of the plurality of emission layers, and an opposite electrode integrally provided over the buffer layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.