Inverter circuit, backlight assembly, and liquid crystal...

Details Inverter circuit, backlight assembly, and liquid crystal... Inverter circuit, backlight assembly, and liquid crystal...

2006-09-14

2008-08-12

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S277000, C315S312000, C315S129000, C345S102000

Reexamination Certificate

active

07411358

ABSTRACT:
In an inverter circuit for a backlight assembly, a first sinusoidal voltage and a second sinusoidal voltage having an opposite polarity to that of the first sinusoidal voltage are applied across terminals of 2n CCFLs. Each of respective primary coils of n first balance transformers are connected in series with corresponding first terminals of a first set of n CCFLs from the 2n CCFLs. Each of respective primary coils of n second balance transformers are connected in series with corresponding first terminals of a second set of n CCFLs from the 2n CCFLs. The secondary coils of the first balance transformers and the secondary coils of the second balance transformers are connected in series with each other to form a loop. Accordingly, the backlight assembly makes it easy to troubleshoot a failure in the CCFLs.

REFERENCES:
patent: 6781325 (2004-08-01), Lee
patent: 7061183 (2006-06-01), Ball
patent: 7141933 (2006-11-01), Ball
patent: 7250731 (2007-07-01), Jin
patent: 7294971 (2007-11-01), Jin
patent: 2005-011634 (2005-01-01), None
patent: 2005049747 (2005-02-01), None
patent: 10-2005-0067681 (2005-07-01), None
patent: 10-2005-0078469 (2005-08-01), None

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