COLOR TUNABLE OLED ILLUMINATION DISPLAY AND METHOD FOR CONTROLLED DISPLAY ILLUMINATION
First Claim
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1. A color display device comprising:
- a light modulating element; and
a color tunable OLED illumination source configured to illuminate the light modulating element, the illumination source comprising a plurality of OLED layers fabricated on different substrates and assembled in a stacked configuration;
wherein each of the plurality of OLED layers comprises active light-emitting areas, alternating with inactive non-light emitting areas configured to transmit light emitted by underlying OLED layers.
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Abstract
A color display device is disclosed. The display includes a light modulating element and a color tunable OLED illumination source configured to illuminate the light modulating element, the illumination source comprising a plurality of OLED layers fabricated on different substrates and assembled in a stacked configuration, wherein each of the plurality of OLED layers comprises active light-emitting areas, alternating with inactive non-light emitting areas configured to transmit light emitted by underlying OLED layers. A method of illuminating a backlit display is also disclosed.
59 Citations
24 Claims
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1. A color display device comprising:
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a light modulating element; and a color tunable OLED illumination source configured to illuminate the light modulating element, the illumination source comprising a plurality of OLED layers fabricated on different substrates and assembled in a stacked configuration; wherein each of the plurality of OLED layers comprises active light-emitting areas, alternating with inactive non-light emitting areas configured to transmit light emitted by underlying OLED layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A backlit LCD device comprsing:
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an LCD element; a color tunable OLED illumination source configured to illuminate the LCD from the rear, the illumination source comprising a plurality of OLED layers fabricated on different substrates assembled in a stacked configuration, wherein the plurality of OLED layers each comprising alternating active light-emitting areas and inactive non-light emitting areas; and
wherein the inactive non-light emitting areas of each of the plurality of OLED layers is configured to transmit light emitted by underlying OLED layers;a controller for selectively powering each layer of OLED illumination source; and a driver for varying the transmittance of each pixel of the light-transmissive LCD. - View Dependent Claims (20, 21, 22, 23)
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24. A method of illuminating a backlit display, said method comprising:
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selectively providing electric power to one or more OLED layers of a plurality of OLED layers of a color tunable OLED illumination source to color and/or intensity tune the light output of the illumination source, wherein the plurality of OLED layers comprise alternating active light-emitting areas and inactive non-light emitting areas, and wherein the inactive non-light emitting areas of each of the plurality of OLED layers is configured to transmit light emitted by underlying OLED layers; temporally varying planar backlight color, cycling through different colors produced by one or combinations of two or more OLED layers with a frequency higher than a human visual response frequency; and synchronously varying the transmitance of each pixel of the light-transmissive LCD with the temporally varying planar backlight color to produce a color display.
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Specification