APPARATUS FOR PROVIDING LIGHT SOURCE MODULATION IN DUAL MODULATOR DISPLAYS
First Claim
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1. A display comprising:
- a light source modulation layer comprising a first array of modulation elements having a first resolution;
a display modulation layer comprising a second array of modulation elements having a second resolution;
a controller configured to receive image data and to determine first drive signals for the modulation elements of the light source modulation layer based at least in part on the image data, the light source modulation layer emitting a first spatially varying light pattern in response to the first drive signals;
a phosphorescent plate interposed in an optical path between the light source modulation layer and the display modulation layer to receive the first spatially varying light pattern, the phosphorescent plate comprising one or more materials which emit a second spatially varying light pattern in response to receiving the first spatially varying light pattern, the second spatially varying light pattern having a spectral distribution different from that of the first spatially varying light pattern;
wherein the controller is configured to determine second drive signals for the modulation elements of the display modulation layer based at least in part on the image data and expected characteristics of the second spatially varying light pattern when received at the display modulation layer.
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Abstract
Dual modulator displays are disclosed incorporating a phosphorescent plate interposed in the optical path between a light source modulation layer and a display modulation layer. Spatially modulated light output from the light source modulation layer impinges on the phosphorescent plate and excites corresponding regions of the phosphorescent plate which in turn emit light having different spectral characteristics than the light output from the light source modulation layer. Light emitted from the phosphorescent plate is received and further modulated by the display modulation layer to provide the ultimate display output.
149 Citations
20 Claims
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1. A display comprising:
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a light source modulation layer comprising a first array of modulation elements having a first resolution; a display modulation layer comprising a second array of modulation elements having a second resolution; a controller configured to receive image data and to determine first drive signals for the modulation elements of the light source modulation layer based at least in part on the image data, the light source modulation layer emitting a first spatially varying light pattern in response to the first drive signals; a phosphorescent plate interposed in an optical path between the light source modulation layer and the display modulation layer to receive the first spatially varying light pattern, the phosphorescent plate comprising one or more materials which emit a second spatially varying light pattern in response to receiving the first spatially varying light pattern, the second spatially varying light pattern having a spectral distribution different from that of the first spatially varying light pattern; wherein the controller is configured to determine second drive signals for the modulation elements of the display modulation layer based at least in part on the image data and expected characteristics of the second spatially varying light pattern when received at the display modulation layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A display comprising:
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a backlight which is controllable to emit a first spatially varying light pattern; a phosphorescent plate located to be illuminated by the first spatially varying light pattern and comprising one or more materials which emit a second spatially varying light pattern in response to receiving the first spatially varying light pattern, the second spatially varying light pattern having a spectral distribution different from that of the first spatially varying light pattern; and a display modulation layer located to receive the second spatially varying light pattern, the display modulation layer controllable to spatially modulate the second spatially varying light pattern and to thereby provide a third spatially varying light pattern, the third spatially varying light pattern having a spatial variation different from that of the second spatially varying light pattern.
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13. A method for displaying an image on a dual modulator display comprising a light source modulation layer incorporating a first array of modulation elements and a display modulation layer incorporating a second array of modulation elements, the method comprising:
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receiving image data; determining first drive signals for the modulation elements of the light source modulation layer based at least in part on the image data, the first drive signals, when applied to the modulation elements of the light source modulation layer, causing the light source modulation layer to emit a first spatially varying light pattern; providing a phosphorescent plate interposed in an optical path between the light source modulation layer and the display modulation layer to receive the first spatially varying light pattern, the phosphorescent plate comprising one or more materials which emit a second spatially varying light pattern in response to receiving the first spatially varying light pattern, the second spatially varying light pattern having a spectral distribution different from that of the first spatially varying light pattern; determining second drive signals for the modulation elements of the display modulation layer based at least in part on the image data and expected characteristics of the second spatially varying light pattern when received at the display modulation layer; and displaying the image by applying the first drive signals to the light source modulation layer and the second drive signals to the display modulation layer. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification