Phase shift circuit and backlight unit having the same

Details Phase shift circuit and backlight unit having the same Phase shift circuit and backlight unit having the same

2008-04-16

2010-10-05

Tran, Thuy Vinh (Department: 2821)

Electricity: power supply or regulation systems

For phase shift or control

C345S102000, C315S246000

Reexamination Certificate

active

07808216

ABSTRACT:
Disclosed is a phase shift circuit. The phase shift circuit comprises a frequency multiplier outputting a square wave signal by frequency-multiplying a reference signal, a frequency synchronizer receiving the square wave signal to output a triangle wave signal, and a PWM nodule receiving the triangle wave signal to output a phase-shifted multi-channel control signal.

REFERENCES:
patent: 4663702 (1987-05-01), Tanaka
patent: 6501234 (2002-12-01), Lin et al.
patent: 6750842 (2004-06-01), Yu
patent: 7560914 (2009-07-01), O'Driscoll et al.
patent: 2003/0178951 (2003-09-01), Park et al.
patent: 2006/0072568 (2006-04-01), Vaananen
patent: 10-2003-0030513 (2003-04-01), None
patent: 10-2003-0075626 (2003-09-01), None

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