Backlight inverter and method of driving same

Details Backlight inverter and method of driving same Backlight inverter and method of driving same

2005-06-07

2009-02-10

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C315S219000, C315S277000, C345S102000

Reexamination Certificate

active

07489087

ABSTRACT:
A backlight inverter to light a plurality of CCFLs is provided which supplies a stable clamp current without influence of the CCFL temperature, and which stabilizes the LCD surface brightness immediately from the start of lighting the CCFLs, and a method of driving the backlight inverter is also provided. In a backlight inverter including a plurality of inverter transformers and adapted to light a plurality of CCFLs, two primary windings of each of the inverter transformers are connected in series to each other, and a resonant circuit is formed of a leakage inductance and capacitances at the secondary side of each of the inverter transformers, wherein the inverter transformers are operated at a frequency which is lower than an intermediate frequency between the series resonance frequency and the parallel resonance frequency of the resonant circuit, and which is higher than a frequency at which the phase characteristic curve has its peak.

REFERENCES:
patent: 5694007 (1997-12-01), Chen
patent: 6114814 (2000-09-01), Shannon et al.
patent: 6137234 (2000-10-01), Willaert et al.
patent: 6633138 (2003-10-01), Shannon et al.
patent: 6936973 (2005-08-01), Parra et al.
patent: 7038397 (2006-05-01), Komatsu et al.
patent: 7187139 (2007-03-01), Jin
patent: 7253565 (2007-08-01), Kang et al.
patent: 2004/0046512 (2004-03-01), Suzuki et al.
patent: 2005/0088113 (2005-04-01), Ushijima et al.
patent: 2006/0012312 (2006-01-01), Lyle et al.
patent: 2006/0076907 (2006-04-01), Chen et al.
patent: 2006/0082330 (2006-04-01), Montante
patent: 2006/0120109 (2006-06-01), Inoue et al.
patent: 1 397 028 (2004-03-01), None
patent: A 2000-277361 (2000-10-01), None
patent: A 2001-244094 (2001-09-01), None
patent: A 2003-512710 (2003-04-01), None
patent: A 2003-168585 (2003-06-01), None
patent: A 2004-103316 (2004-04-01), None
patent: A 2004-201457 (2004-07-01), None
patent: WO 01/30121 (2001-04-01), None

Affiliated with

Also associated with

Rating

Backlight inverter and method of driving same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Backlight inverter and method of driving same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backlight inverter and method of driving same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4052593