Edge lit locally dimmed display
First Claim
Patent Images
1. An edge lit locally dimmed display, comprising:
- a spatial light modulator;
a light source configured to cause an illumination on the spatial light modulator;
wherein;
the light source is at an edge and behind a viewing side of the spatial light modulator; and
the illumination comprises a low resolution version of a desired image;
wherein the illumination comprises a series of lighting elements having a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements.
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Accused Products
Abstract
An edge lit locally dimmed display has a spatial light modulator illuminated by a light source. The light source is positioned at an edge and behind the spatial light modulator. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.
183 Citations
76 Claims
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1. An edge lit locally dimmed display, comprising:
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a spatial light modulator; a light source configured to cause an illumination on the spatial light modulator; wherein; the light source is at an edge and behind a viewing side of the spatial light modulator; and the illumination comprises a low resolution version of a desired image; wherein the illumination comprises a series of lighting elements having a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An edge lit locally dimmed display, comprising:
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a spatial light modulator; a light source configured to cause an illumination of the spatial light modulator; wherein; the light source is at an edge and behind a viewing side of the spatial light modulator; and the illumination comprises a low resolution version of a desired image; wherein the illumination comprises a series of lighting elements having a spread function comprising a full width at half maximum of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An edge lit locally dimmed display, comprising:
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a spatial light modulator; a light source configured to cause an illumination of the spatial light modulator; wherein; the light source is at an edge and behind a viewing side of the spatial light modulator; and the illumination comprises a low resolution version of a desired image; wherein the illumination comprises a series of lighting elements having a spread function comprising a convolution of a rectangular function having a full width at half maximum of 0.3d2 to 3d2 where d2 is a center-to-center spacing between the lighting elements. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An edge lit locally dimmed display, comprising:
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a spatial light modulator; a light source configured to cause an illumination of the spatial light modulator; wherein; the light source is at an edge and behind a viewing side of the spatial light modulator; and the illumination comprises a low resolution version of a desired image; wherein the illumination comprises a series of lighting elements that vary smoothly from one element to another at the spatial light modulator. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. An edge lit locally dimmed display, comprising:
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a spatial light modulator; a light source configured to cause an illumination of the spatial light modulator; wherein; the light source is at an edge and behind a viewing side of the spatial light modulator; and the illumination comprises a low resolution version of a desired image; wherein the illumination comprises a series of lighting elements, and wherein the illumination comprises an illumination pattern configured to reduce artifacts due to a disparity in resolution between the lighting elements and the spatial light modulator. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. An edge lit locally dimmed display, comprising:
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a spatial light modulator; a light source configured to cause an illumination of the spatial light modulator; wherein; the light source is at an edge and behind a viewing side of the spatial light modulator; and the illumination comprises a low resolution version of a desired image; wherein; the light source projects light in a direction substantially parallel to a plane of the spatial light modulator and is redirected to a direction that is substantially perpendicular to the plane of the spatial light modulator; the illumination comprises a series of lighting elements that vary smoothly from one element to another at the spatial light modulator; the illumination comprises an illumination pattern configured to reduce artifacts due to a disparity in resolution between the lighting elements and the spatial light modulator; the illumination comprises a series of lighting elements having a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements at their origin.
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57. A locally dimmed display method, comprising the steps of:
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energizing a lighting device; reflecting light from the energized lighting device onto a spatial light modulator; and modulating the reflected light to produce a desired image; wherein; the reflected light comprises a low resolution version of a the desired image; the lighting device is located at an edge and behind the spatial light modulator; and the reflected light comprises a series of lighting elements having a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements at their origin.
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58. A locally dimmed display method, comprising the steps of:
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energizing a lighting device; reflecting light from the energized lighting device onto a spatial light modulator; and modulating the reflected light to produce a desired image; wherein; the reflected light comprises a low resolution version of a the desired image; the lighting device is located at an edge and behind the spatial light modulator; and the reflected light comprises a series of lighting elements having a spread function comprising a full width at half maximum of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements at their origin.
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59. A locally dimmed display method, comprising the steps of:
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energizing a lighting device; reflecting light from the energized lighting device onto a spatial light modulator; and modulating the reflected light to produce a desired image; wherein; the reflected light comprises a low resolution version of a the desired image; the lighting device is located at an edge and behind the spatial light modulator; and the reflected light comprises a series of lighting elements having a spread function comprising a convolution of a rectangular function having a full width at half maximum of 0.3d2 to 3d2 where d2 is a center-to-center spacing between the lighting elements at their origin.
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60. A locally dimmed display method, comprising the steps of:
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energizing a lighting device; reflecting light from the energized lighting device onto a spatial light modulator; and modulating the reflected light to produce a desired image; wherein; the reflected light comprises a low resolution version of a the desired image; the lighting device is located at an edge and behind the spatial light modulator; and the reflected light comprises a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.
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61. A locally dimmed display method, comprising the steps of:
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energizing a lighting device; reflecting light from the energized lighting device onto a spatial light modulator; and modulating the reflected light to produce a desired image; wherein; the reflected light comprises a low resolution version of a the desired image; the lighting device is located at an edge and behind the spatial light modulator; and the reflected light comprises a series of lighting elements, and wherein the reflected light comprises an illumination pattern configured to reduce artifacts due to a disparity in resolution between the lighting elements and the spatial light modulator.
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62. A locally dimmed display method, comprising the steps of:
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energizing a lighting device; reflecting light from the energized lighting device onto a spatial light modulator; and modulating the reflected light to produce a desired image; wherein; the reflected light comprises a low resolution version of a the desired image; the lighting device is located at an edge and behind the spatial light modulator; the light source projects light in a direction substantially parallel to a plane of the spatial light modulator and is reflected to a direction that is substantially perpendicular to the plane of the spatial light modulator; the reflected light comprises a series of lighting elements that vary smoothly from one element to another at the spatial light modulator; the reflected light comprises an illumination pattern configured to reduce artifacts due to a disparity in resolution between the lighting elements and the spatial light modulator; and the reflected light comprises a series of lighting elements having a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements at their origin.
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63. A display device, comprising:
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a spatial light modulator; and a lighting source; wherein the lighting source is configured to contribute to the production of a low resolution version of a desired image to be imaged onto the spatial light modulator; wherein the low resolution version of the desired image comprises a series of low resolution lighting elements that mix together to form a smoothly varying pattern of light on the spatial light modulator including a spread function of 0.3d2 to 3d2 where d2 is a spacing between the lighting elements. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
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Specification