Image display device with element driving device for matrix drive of multiple active elements
US6091203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0842
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display device has multiple active elements arranged therein, such as an organic EL (Electro-Luminescence) element to matrix-drives these active elements. In the image display device, when a switching element is turned on with a control signal applied to a control electrode, a control current on a signal electrode is converted to a control voltage by a second transistor, held in a holding capacitor, and applied to a gate electrode of a first transistor. Thus, the signal electrode is applied with the control current, not with a control voltage, for controlling the operation of the active element. A drive voltage to be applied to a power supply electrode is converted to a drive current and supplied to the active element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.