Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate
2008-03-07
2010-02-16
Vu, David Hung (Department: 2821)
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
C315S225000, C315S274000, C315S282000
Reexamination Certificate
active
07663322
ABSTRACT:
There is provided a backlight driving system for a liquid crystal display that can reduce size and weight of a product because a DC-DC converter is not used when commercial AC power is converted into lamp driving power. A backlight driving system for a liquid crystal display according to an aspect of the invention includes a power supply unit converting commercial alternating current (AC) power into direct current (DC) power having a voltage level set beforehand, an inverter unit converting the DC power from the power supply unit into AC power at a one-to-one conversion ratio set beforehand, a boosting unit boosting the AC power from the inverter unit into lamp lighting power set beforehand; and a lamp group receiving the lamp lighting power from the boosting unit to emit light.
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Korean Intellectual Property Office, Office Action mailed Apr. 4, 2008 and English Translation.
Cho Jin Woo
Cho Kwang Seung
Han Sang Kyoo
Hong Sung Soo
Jang Dea Min
Le Tung X
Lowe Hauptman Ham & Berner
Samsung Electro-Mechanics Co. Ltd.
Vu David Hung
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