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Liquid crystal display with color backlighting employing light emitting diodes

  • US 20060038770A1
  • Filed: 08/17/2005
  • Published: 02/23/2006
  • Est. Priority Date: 12/12/2002
  • Status: Abandoned Application
First Claim
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1. A color display device including:

  • a light-transmissive liquid crystal display (LCD);

    a backlight arranged to illuminate the light-transmissive LCD, the backlight including at least a two-dimensional array of first color component light emitting diodes (first color component LEDs), a two-dimensional array of second color component light emitting diodes (second color component LEDs) distributed amongst the first color component LEDs, and a two-dimensional array of third color component light emitting diodes (third color component LEDs) distributed amongst the first and second color component LEDs;

    LED circuitry that cyclically alternates between powering the first color component LEDs to produce first color component backlighting, powering the second color component LEDs to produce second color component backlighting, and powering the third color component LEDs to produce third color component backlighting; and

    LCD circuitry that updates a display shown on the LCD, the updates being synchronized with color changes of the backlight.

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