Organic light emitting device and method of manufacturing the same
US7473932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Mar 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8792
Abstract
An organic light emitting device (OLED) and a method for manufacturing the same are disclosed. In one embodiment, the OLED includes i) a pixel layer having a first electrode, a second electrode, and a light emitting portion interposed between the first electrode and the second electrode and having at least an emission layer, ii) a transparent member disposed in a direction in which light generated from the pixel layer is transmitted, iii) a diffraction grating disposed between the pixel layer and the transparent member, and iv) a low-refractive layer made of a material having a refractive index less than that of a material forming the transparent member, the low-refractive layer disposed between the diffraction grating and the transparent member. The OLED can prevent image spreading and deterioration in color purity while having enhanced light coupling efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.