LED backlight using discrete RGB phosphors
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United States of America Patent
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Issued Date -
May 22, 2008
app pub date -
Nov 22, 2006
filing date -
Nov 22, 2006
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Abstract
An LED backlight apparatus includes a plurality of radiation emitting diodes, each diode emits radiation having a peak wavelength of about less than 430 nm. Each diode is located on a back surface of a housing. The housing may have an opening. A screen covers the opening and the screen includes a discrete pattern of phosphor coated red light emitting pixels, a second discrete pattern of phosphor coated green light emitting pixels, and a third discrete pattern of phosphor coated blue light emitting pixels. The emitted radiation may excite the phosphor coated pixels. The apparatus may also include a radiation regulating element proximate the screen and further include a diffuser proximate the diodes.
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