Display driver and method thereof
US6175346A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2014
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display driver circuit having graphics and bilevel modes drives a display (110). A column control circuit (112) includes a shift register (302) with display blanking and bi-directional shifting for scanning the display (110) in either direction for driving display (110) from either end. A dual mode row driver (502) provides graphics capability for displaying images and low power operation when displaying text. In graphics mode, a four-bit luminance word controls a row drive pulse to produce a representative pixel brightness in the display (110). In bilevel mode, the system clock (V.sub.CLOCK) is reduced in frequency to conserve power while maintaining data transfer and refresh rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.