Airguide backlight assembly
First Claim
Patent Images
1. An airguide backlight assembly comprising:
- an anterior element comprised of a layer of liquid crystal cells;
a reflective pan spaced apart from and positioned posterior to the anterior element, said reflective pan having a front surface positioned to faces a rear surface of the anterior element and a centerline, wherein the front surface comprises;
at least two convex portions on each side of the centerline such that the reflective pan contains a total of four or more convex portions; and
at least one concave portion on each side of the centerline, such that the reflective pan comprises a total of two or more concave portions;
wherein each of the concave portions are located between the at least two convex portions on a respective side of the centerline;
wherein the convex portions and the concave portions are comprised of a reflective material; and
a light source positioned to direct light towards the reflective pan.
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Abstract
The exemplary embodiments herein provide an airguide backlight assembly having an anterior element, a reflective pan positioned posterior to the anterior element, and a light source positioned to direct light towards the reflective pan. A lens element may be placed in front of each light source. The reflective pan preferably contains a slope or curve so that light emitted from the light sources can be reflected and/or refracted to distribute the light uniformly to the anterior element. In some embodiments, blinders may be positioned between the light sources and the anterior element as well as between the light sources and the reflective pan.
193 Citations
20 Claims
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1. An airguide backlight assembly comprising:
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an anterior element comprised of a layer of liquid crystal cells; a reflective pan spaced apart from and positioned posterior to the anterior element, said reflective pan having a front surface positioned to faces a rear surface of the anterior element and a centerline, wherein the front surface comprises; at least two convex portions on each side of the centerline such that the reflective pan contains a total of four or more convex portions; and at least one concave portion on each side of the centerline, such that the reflective pan comprises a total of two or more concave portions; wherein each of the concave portions are located between the at least two convex portions on a respective side of the centerline; wherein the convex portions and the concave portions are comprised of a reflective material; and a light source positioned to direct light towards the reflective pan. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An airguide backlight assembly comprising:
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an anterior element having a first and second opposing edge and a centerline, the anterior element comprising a liquid crystal layer; a first plurality of light sources placed along the first opposing edge; a second plurality of light sources placed along the second opposing edge; a lens element placed in front of each light source; and a reflective pan spaced apart from and positioned posterior to the anterior element, wherein the distance from the anterior element to the reflective pan varies across the reflective pan, is the smallest when measured along the centerline, and continually increases, or remains equidistant for a distance, from the centerline towards each of the pair of opposing edges; wherein the reflective pan comprises both convex and concave surfaces on both sides of the centerline such that the reflective pan comprises a total of two or more convex portions and two or more concave portions, wherein the entire surface of the concave portions and the convex portions are reflective. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An airguide backlight assembly comprising:
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an anterior element having a rear surface, a pair of opposing edges, and a centerline, the anterior element comprising a layer of liquid crystals; a first plurality of light sources placed along one of the opposing edges; a second plurality of light sources placed along the opposite opposing edge as the first plurality of light sources; a lens element placed in front of each light source; a reflective pan positioned posterior to the anterior element and having a front surface which faces the rear surface of the anterior element; at least two convex portions on both sides of the centerline such that the reflective pan comprises a total of four or more convex portions; and at least one concave portion on both sides of the centerline such that the reflective pan comprises a total of two or more concave portions; wherein the concave portion on each side of the centerline is located between the at least two convex portions on the respective side of the centerline; wherein the front surface of the reflective pan is continually inclined towards, or extends equidistant for a distance with, the rear surface of the anterior element from each of the opposing edges towards the centerline. - View Dependent Claims (17, 18, 19, 20)
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Specification