Comparator-based drivers for LCD displays and the like
US7561137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | May 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A comparator-based driver has a configurable inverter that inverts one of the comparator output signals for application to the gate of a driver transistor used to generate the driver output signal. The configurable inverter can be selectively configured to provide any one of at least two different inverter logic threshold levels. In one possible operational scenario, the configurable inverter is configured such that the inverter logic threshold level is equivalent to the comparator's differential common-mode voltage to provide relatively high driver symmetry. The configurable inverter is then configured to provide a different inverter logic threshold level that is greater than the comparator's differential common-mode voltage to inhibit chattering in the driver output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.