Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Reexamination Certificate
2004-09-09
2008-11-11
Philogene, Haissa (Department: 2821)
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
C315S169400, C315S312000, C315S318000, C345S102000, C345S094000, C345S087000
Reexamination Certificate
active
07449838
ABSTRACT:
A backlight device is configured from a drive unit and a backlight. The backlight includes a first light source group and a second light source group. The drive unit drives one or more fluorescent lamps of the first light source group in response to a first synchronous signal, and drives one or more fluorescent lamps of the second light source group in response to a second synchronous signal. A phase difference between the first synchronous signal and the second synchronous signal is within a range greater than 60 degrees and smaller than 120 degrees, or a range greater than 240 degrees and smaller than 300 degrees.
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English language abstract of JP 2000-352718.
English language abstract of JP 2002-231034.
English language Abstract of KR 2002-0061834.
Greenblum & Bernstein P.L.C.
Matsushita Electric - Industrial Co., Ltd.
Philogene Haissa
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