Title:
METHOD AND SYSTEM FOR RAMP CONTROL OF PRECHARGE VOLTAGE
Document Type and Number:
WIPO Patent Application WO2003034386
Kind Code:
A3
Abstract:
A method and system for controlling a voltage to precharge current-driven elements in a matrix, and a method of manufacturing apparatus therefor. Current is delivered to a matrix connection during a conduction period so that an enabled element will conduct a particular charge. During the conduction, changes or ramps in a voltage associated with the matrix connection indicate that the element has not achieved equilibrium voltage. The ramps are sensed and used to control a precharge voltage which is applied to the matrix connection prior to subsequent conduction periods, generally until the voltage begins at the equilibrium value and therefore does not change during the conduction period.
Inventors:
LECHEVALIER ROBERT E
Application Number:
PCT/US2002/033375
Publication Date:
October 16, 2003
Filing Date:
October 17, 2002
Export Citation:
Assignee:
CLARE MICRONIX INTEGRATED SYST (US)
International Classes:
C22B9/02; G01R31/00; G05F3/02; G09G3/10; G09G3/30; G09G3/32; G09G5/00; H02M1/08; H02M3/07; H03F1/08; H03F3/45; H03F3/68; G09G; (IPC1-7): G09G3/32
Domestic Patent References:
| WO2001027910A1 | 2001-04-19 |
Foreign References:
| US5949194A | 1999-09-07 | |||
| US5594463A | 1997-01-14 | |||
| EP1071070A2 | 2001-01-24 | |||
| US6067061A | 2000-05-23 | |||
| US4366504A | 1982-12-28 | |||
| US20010024186A1 | 2001-09-27 |
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