Materials and methods for organic light-emitting device microcavity
US8466484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2012 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Jan 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/854
Abstract
The present teachings provide methods for forming organic layers for an organic light-emitting device (OLED) using a thermal printing process. The method can further use one or more additional processes, such as vacuum thermal evaporation (VTE), to create an OLED stack. OLED stack structures are also provided wherein at least one of the charge injection or charge transport layers is formed by a thermal printing method at a high deposition rate. The organic layer can be subject to post-deposition treatment such as baking. The structure of the organic layer can be amorphous, crystalline, porous, dense, smooth, rough, or a combination thereof, depending on deposition parameters and post-treatment conditions. The organic layer can improve light out-coupling efficiency of an OLED, increase conductivity, decrease index of refraction, and/or modify the emission chromaticity of an OLED. An OLED microcavity is also provided and can be formed by one of more of these methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.