Choke transformer used in liquid crystal display backlight...

Details Choke transformer used in liquid crystal display backlight... Choke transformer used in liquid crystal display backlight...

2005-06-13

2009-08-25

Nguyen, Tuyen (Department: 2832)

Inductor devices

With closed core interrupted by an air gap

Reexamination Certificate

active

07579936

ABSTRACT:
Disclosed is a choke transformer used in liquid crystal display (LCD) backlight driver, comprising a winding base on which a plurality of spacers are formed and having a hollow structure, a core received within the winding base and a plurality of windings wound between two neighboring ones of the plurality of spacers as a winding set, each winding set having windings of different characteristics; and is characterized in that an air gap is provided between the winding base having the hollow structure and the core. With such devised choke transformer, a higher endurable voltage is achieved. Further, the characteristics of prolonged lifetime, reduced cost, smaller dimension and saved installation space may be achieved with the choke transformer.

REFERENCES:
patent: 6075431 (2000-06-01), Honma
patent: 6154113 (2000-11-01), Murai
patent: 6201463 (2001-03-01), Yamashita et al.
patent: 6600402 (2003-07-01), LaFleur et al.
patent: 6771157 (2004-08-01), Nishikawa et al.
patent: 6853284 (2005-02-01), Nagai et al.
patent: 6958673 (2005-10-01), Suzuki

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