Passive matrix display drivers
US8427402B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2006 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jun 1, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention generally relates to methods and apparatus for driving passive matrix displays, in particular OLED (Organic Light Emitting Diode) displays.A method of driving a passive matrix electroluminescent display, the display having a plurality of rows and columns of emissive elements addressed by respective row and column electrodes, the method comprising: addressing said row electrodes, one at a time; and driving a set of said column electrodes while addressing each said row electrode; wherein said column electrode driving comprises driving said column electrodes to determine ratios of column drive signals to one another for said set of column electrodes; and wherein the method further comprises controlling an overall drive for said set of column electrodes to control a drive to said emissive elements in each said addressed row.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.