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US 2003/0132715 A1Published application
Inverter for driving el lamp and liquid crystal display
AssigneeDurel Corporation
InventorsBrian Jeffrey Buell, Robert Allen Kimball
Life of this patent
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Abstract
An inverter for driving an EL lamp is tapped to provide voltage or current for driving one or more EL lamps and an LCD. In accordance with one aspect of the invention, one side of the pump inductor is tapped for a voltage that drives the LCD.
Claims9
In an inverter including an integrated circuit having a plurality of pins and an external inductor coupled to at least one of said pins, said inverter producing a first voltage suitable for driving at least one EL lamp, the improvement comprising:
- a bias source coupled to said inductor, said bias source producing a second voltage suitable for driving an LCD, wherein said second voltage is derived from the first voltage.
An inverter for simultaneously driving at least one EL lamp and an LCD, said inverter comprising:
- an inductor for producing a high voltage suitable for driving said EL lamp;
- and
- a bias source coupled to said inductor for providing a bias voltage suitable for an LCD, wherein said bias voltage is derived from said high voltage.
Dependencies are inferred from the claim text.