Patent ID: 7639111

Claim:
A high voltage transformer for a backlight power source, comprising a windings base, a core and windings, the windings base having an isolating wall disposed exterior thereto through which a first and a second windings troughs are formed, the core disposed within a hollow body of the windings base, and the windings having a first windings wound on the first windings trough and a coil of the windings passing through the isolating wall to have a second windings wound on the second windings trough, wherein the hollow body is engaged with the isolating wall by passing therethrough and the isolating wall is formed a cutout opening to expose the hollow body and a guiding recess is formed at a bottom corner of an inner wall of the cutout opening so that when the first windings trough wound by the first windings is full, the coil passes through the guiding recess to start winding on the second windings trough to complete the second windings.