Display driver circuits for organic light emitting diode displays with skipping of blank lines, method of reducing power consumption of a display, processor control code to implement the method, and carrier for the control code
US7474288B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2003 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Oct 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Display driver circuits are described for driving organic light-emitting diode displays, particularly passive matrix displays, with greater efficiency. Display driver circuitry includes a frame memory interface for reading data from a frame memory for presentation on a passive matrix OLED display. A blank line identifier identifies one or more substantially blank rows of pixels defined by the data in the frame memory and the control circuitry skips past these rows when the passive matrix display is addressed. When blank lines are skipped the apparent brightness of the remaining lines increases and thus preferably the control circuitry includes a power-controller for reducing a power supply to the display in proportion to the number of skipped lines. The disclosed circuitry is particularly suited to a display driver providing a controlled current drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.