Edge-lit backlight having light recycling cavity with concave transflector
First Claim
1. An edge-lit backlight having an output area, comprising:
- a back reflector facing the output area of the backlight;
a transflector that partially transmits and partially reflects incident light, the transflector being shaped to form at least one concave structure facing the back reflector to provide one or more recycling cavities therebetween, wherein the one or more recycling cavities substantially fill the output area of the backlight; and
at least one light source positioned adjacent a first edge of the backlight, wherein the at least one light source is operable to inject light into the one or more recycling cavities through an input surface of the one or more recycling cavities, wherein the input surface is substantially orthogonal to the output area of the backlight, and further wherein the at least one concave structure converges with the back reflector in a direction distal from the input surface.
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Accused Products
Abstract
An edge-lit backlight having a light recycling cavity with concave transflector is disclosed. The edge-lit backlight has an output area and includes a back reflector facing the output area of the backlight. The backlight further includes a transflector that partially transmits and partially reflects incident light, the transflector being shaped to form a concave structure facing the back reflector to provide one or more recycling cavities therebetween, where the one or more recycling cavities substantially fill the output area of the backlight. The backlight further includes at least one light source positioned adjacent a first edge of the backlight. The at least one light source is operable to inject light into the one or more recycling cavities through an input surface of the one or more recycling cavities, where the input surface is substantially orthogonal to the output area, and where the at least one concave structure converges with the back reflector in a direction distal from the input surface.
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Citations
21 Claims
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1. An edge-lit backlight having an output area, comprising:
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a back reflector facing the output area of the backlight; a transflector that partially transmits and partially reflects incident light, the transflector being shaped to form at least one concave structure facing the back reflector to provide one or more recycling cavities therebetween, wherein the one or more recycling cavities substantially fill the output area of the backlight; and at least one light source positioned adjacent a first edge of the backlight, wherein the at least one light source is operable to inject light into the one or more recycling cavities through an input surface of the one or more recycling cavities, wherein the input surface is substantially orthogonal to the output area of the backlight, and further wherein the at least one concave structure converges with the back reflector in a direction distal from the input surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A display system, comprising:
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a display panel comprising an illumination side and a viewing side; and an edge-lit backlight disposed on the illumination side of the display panel, wherein the backlight has an output area, wherein the edge-lit backlight comprises; a back reflector facing the output area of the backlight; a transflector that partially transmits and partially reflects incident light, the transflector being shaped to form at least one concave structure facing the back reflector to provide one or more recycling cavities therebetween, wherein the one or more recycling cavities substantially fill the output area of the backlight; and at least one light source positioned adjacent a first edge of the backlight, wherein the at least one light source is operable to inject light into the one or more recycling cavities through an input surface of the one or more recycling cavities, wherein the input surface is substantially orthogonal to the output area of the backlight, and further wherein the at least one concave structure converges with the back reflector in a direction distal from the input surface. - View Dependent Claims (19, 20)
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21. An edge-lit backlight having an output area, comprising:
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a back reflector; transflector means for partially transmitting and partially reflecting incident light, the transflector means including at least one concave structure facing the back reflector to provide one or more recycling cavities therebetween, wherein the one or more recycling cavities substantially fill the output area of the panel; and light source means positioned adjacent a first edge of the backlight for injecting light into the one or more recycling cavities through an input surface of the one or more recycling cavities, wherein the input surface is substantially orthogonal to the output area of the backlight, and further wherein the input surface is substantially orthogonal to the output area; wherein the at least one concave structure converges with the back reflector in a direction distal from the input surface.
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Specification