Backlighting system for a liquid crystal display unit

Details Backlighting system for a liquid crystal display unit Backlighting system for a liquid crystal display unit

1999-12-20

2000-12-12

Parker, Kenneth

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

349 62, 362 29, G02F 11335

Patent

active

061605964

ABSTRACT:
A backlighting system for a liquid crystal display (LCD) unit includes a first number of light emitting diodes (LEDs) configured to produce saturated radiation and a second number of LEDs configured to produce desaturated radiation, wherein the saturated and desaturated radiation is combined to form a resultant desaturated radiation of a target color. In a preferred embodiment, the colors and intensities of the first and second numbers of LEDs are chosen to produce a blue-green color of a typical vacuum fluorescent (VF) display unit, whereby the LCD unit may be used to simulated a typical VF display. By utilizing the concepts of the present invention, known dispersive effects associated with the LCD unit are minimized, and a substantially uniform light output from the LCD unit results regardless of a viewing angle relative to the normal of the viewing side of the LCD unit.

REFERENCES:
patent: 4907862 (1990-03-01), Suntola
patent: 4978952 (1990-12-01), Irwin
patent: 5359345 (1994-10-01), Hunter
patent: 5479275 (1995-12-01), Abileah
patent: 6037922 (2000-03-01), Yagyu

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