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US 2005/0231978 A1Published application
High efficiency low power LED backlighting system for liquid crystal display
OwnerAnthony Kvenvold, Brad Harkavyinventors
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Abstract
A backlighting system for liquid crystal display provides low power consumption and high efficiency. The backlighting system includes an array of LEDs arranged in a matrix to generate backlight needed to display light and dark colors on the liquid crystal display. The backlighting system emulates light and dark areas of video images being displayed on the liquid crystal display, selectively backlighting only areas of the liquid crystal display that require backlighting, thereby reducing power consumption.
Claims12
A backlighting system for a liquid crystal display showing video images, the backlighting system comprising:
- an array of LEDs arranged in a matrix to generate backlight for the liquid crystal display;
- a solid state circuit unit to control individually each LED in the array;
- an interconnect means for carrying power and for communicating information to the solid state circuit;
- a control means for receiving a video display information, converting the video display information into light intensity information, and communicating the light intensity information to the solid state circuits;
- and
- a power supply to power the backlighting system.
3 more elements
Dependencies are inferred from the claim text.