Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Reexamination Certificate
2008-07-01
2011-10-04
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Impedance or current regulator in the supply circuit
C315S307000
Reexamination Certificate
active
08030852
ABSTRACT:
A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
REFERENCES:
patent: 7057678 (2006-06-01), Ishida et al.
patent: 7242147 (2007-07-01), Jin
patent: 7325964 (2008-02-01), Kim
patent: 7531968 (2009-05-01), Sengoku et al.
patent: 7758233 (2010-07-01), Chang et al.
patent: 7837377 (2010-11-01), Lee et al.
patent: 2003/0214478 (2003-11-01), Yoo et al.
patent: 2005/0093484 (2005-05-01), Ball
patent: 2006/0279957 (2006-12-01), Kwon et al.
patent: 2006/0284568 (2006-12-01), Chang et al.
patent: 2007/0001621 (2007-01-01), Chan et al.
patent: 2007/0120502 (2007-05-01), Shimura et al.
patent: 2007/0170871 (2007-07-01), Hsu et al.
patent: 1737651 (2006-02-01), None
patent: 200975621 (2007-11-01), None
“First Office Action of China Counterpart Application,” issued on Sep. 15, 2010, p. 1-p. 7, in which the listed references were cited.
Chueh Chin-Chuang
Liao Cheng-Neng
Lin Huang-Ti
Sun Chia-Hung
A Minh
Au Optronics Corporation
Jianq Chyun IP Office
Owens Douglas W
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