Organic electroluminescent display device with an upper electrode in contact with a lower electrode
US9673260B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2016 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Jun 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/3026
Abstract
In an organic EL display device, a resistance of a cathode electrode of OLEDs is substantially reduced while maintaining a higher opening ratio of pixels as an entire display area. A reference power supply line is formed on a glass substrate, and receives a reference potential for driving the OLED. The OLED is formed on the glass substrate where the reference power supply line is formed, and has a structure in which a lower electrode, an organic material layer, and an upper electrode that is a cathode electrode common to plural pixels are laminated on each other in the order from the bottom. In some of the plural pixels, a cathode contact that penetrates through the organic material layer, and electrically connects the upper electrode to the reference power supply line is formed within an opening area corresponding to a W sub-pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.