High capacitance pixel for electronic displays
US6072278A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Jul 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H29/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electroluminescent device in accordance with the present invention includes a first conductive layer having a portion thereof for connecting to a gate of a blocking transistor formed on a substrate. A dielectric layer is formed on the first conductive layer, the dielectric layer having a dielectric constant of at least six. A second conductive layer is formed on the dielectric layer such that the first and second conductive layers have portions which form electrodes of a hold capacitor and the dielectric layer provides a capacitor dielectric between the electrodes such that the dielectric layer continuously covers the device. A pixel electrode is associated with and coupled to the blocking transistor. An electroluminescent stack and a transparent electrode are included wherein the electroluminescent stack is disposed between the transparent electrode and the pixel electrode such that when the blocking transistor is activated the pixel electrode associated therewith illuminates and is maintained in an illuminated state by the hold capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.