US Patent 7948736 Balance transformer and backlight apparatus

Patent 7948736 was granted and assigned to Darfon Electronics Corp. on May, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

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Darfon Electronics Corp.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7948736

Date of Patent

May 24, 2011

Patent Application Number

12207772

Date Filed

September 10, 2008

Patent Primary Examiner

Douglas W Owens

Patent abstract

The invention provides a balance transformer and a backlight apparatus using the same. The balance transformer comprises a first main coil, a second main coil, a first induction coil, and a conductor. The first main coil has a first contact point and a second contact point, and the second main coil has a third contact point and a fourth contact point. The first induction coil is corresponding to the first main coil and the second main coil. The conductor is then series connected to the first contact point and the fourth contact point. Accordingly, the balance transformer drives the backlight apparatus to light and balances the currents of a plurality of light units of the backlight apparatus.