Driving method of light emitting diode

Details Driving method of light emitting diode Driving method of light emitting diode

2005-04-01

2009-02-24

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C315S169300

Reexamination Certificate

active

07495639

ABSTRACT:
A power-saving and efficient driving method for driving a matrix of light emitting diodes arrayed in rows and columns. The method comprises the steps of: (A) executing the phases of Dis-Charge, Pre-Charge, Current On and Dis-Charge in successive for an active column; (B) executing the phases of Dis-Charge, Floating, Dis-Charge and Dis-Charge in successive for a non-active column; (C) executing the phases of Current Sink, Current Sink, Current Sink and Current Sink in successive for an active row; and (D) executing the phases of Floating, Floating, Reverse Bias and Floating in successive for a non-active row.

REFERENCES:
patent: 6366116 (2002-04-01), Juang
patent: 6369515 (2002-04-01), Okuda
patent: 6501226 (2002-12-01), Lai et al.
patent: 6608448 (2003-08-01), Boer
patent: 6650308 (2003-11-01), Kawashima
patent: 6686898 (2004-02-01), Chen et al.
patent: 2005/0007321 (2005-01-01), Schuler

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