LED backlighting system
First Claim
1. A liquid crystal display (LCD) backlighting backlighting device, comprising:
- a non-white light emitting diode;
a liquid crystal display; and
a phosphorized material located between the light emitting diode and the liquid crystal display, where the phosphorized material down converts light from the light emitting diode toward white light spectral radiance.
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Accused Products
Abstract
A liquid crystal display (LCD) device having non-white and white light emitting diodes and a liquid crystal display. A spectrum converting material is positioned between non-white LEDs and the LCD to convert the non-white light from the LEDs toward a white light spectrum. The liquid crystal display may include a plurality of light emitting diodes, a light pipe, and a spectrum converting material. The spectrum converting material may be a phosphorized material located between the plurality of non-white light emitting diodes and the light pipe. A light extracting surface may be located near a first surface of the light pipe, a diffuser located near a second side of the light pipe, where the first and second sides are opposite sides of the light pipe, a reflective polarizer, and an liquid crystal display. The light from the light pipe may passes through the diffuser, the reflective polarizer, before backlighting the liquid crystal display. The non-white LEDs may include blue LED, ultraviolet LEDs, and the like.
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Citations
54 Claims
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1. A liquid crystal display (LCD) backlighting backlighting device, comprising:
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a non-white light emitting diode;
a liquid crystal display; and
a phosphorized material located between the light emitting diode and the liquid crystal display, where the phosphorized material down converts light from the light emitting diode toward white light spectral radiance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A liquid crystal display (LCD) device, comprising:
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a non-white light emitting diode;
a light pipe;
a spectrum converting material between the non-white light emitting diode and the light pipe;
a light extracting surface located near a first side of the light pipe;
a diffuser located near a second side of the light pipe, where the first and second sides are opposite sides of the light pipe;
a reflective polarizer; and
a liquid crystal display;
wherein light from the non-white light emitting diode and converted by the spectrum converting material enters the light pipe passes through the diffuser, the reflective polarizer, then backlights the liquid crystal display. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41)
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39. A liquid crystal display (LCD) device, comprising:
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a light emitting diode that emits non-white light;
a spectrum converting material;
a diffuser;
a reflective polarizer; and
a liquid crystal display;
wherein light from the light emitting diode is converted by the spectrum converting material before the converted light passes through the diffuser, the reflective polarizer, before backlighting the liquid crystal display.
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42. A liquid crystal display, comprising:
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a non-white light emitting diode;
a light pipe with a phosphor coating that converts the spectrum of the non-white light emitting diodes and the light pipe;
a light extracting surface located near a first side of the light pipe;
an enhanced diffuser reflector located near an opposite side of the light pipe;
a diffuser located near a second side of the light pipe, where the first and second sides are opposite sides of the light pipe;
a reflective polarizer; and
a liquid crystal display, wherein light from the light pipe passes through the diffuser, the reflective polarizer, then backlights the liquid crystal display.
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43. A liquid crystal display (LCD) device, comprising:
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a white light emitting diode;
a light pipe;
a light extracting surface located near a first side of the light pipe;
a diffuser located near a second side of the light pipe, where the first and second sides are opposite sides of the light pipe;
a reflective polarizer; and
a liquid crystal display;
wherein light from the white light emitting diode enters the light pipe and passes through the diffuser, the reflective polarizer, then backlights the liquid crystal display. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification