Edge light panel
First Claim
1. An edge light panel for a surface light source device having at least one primary light source, comprising:
- a transparent resin substrate having a plurality of edge surfaces about a periphery thereof, a front surface, and a rear surface;
wherein said rear surface of said transparent resin substrate has a mesh pattern formed thereon to define an irregular reflection surface;
wherein at least one of said plurality of edge surfaces is adapted to be juxtaposed with the at least one primary light source, and comprises means for permitting light from the at least one primary light source incident on said at least one of said plurality of edge surfaces, respectively, to pass through said at least one of said plurality of edge surfaces and into said transparent resin substrate;
wherein said means comprises a roughened portion of said at least one of said plurality of edge surfaces;
wherein said roughened portion of said at least one of said plurality of edge surfaces is formed intermittently along said at least one of said plurality of edge surfaces; and
wherein said mesh pattern has mesh sizes which vary as a function of the distance from said at least one of said plurality of edge surfaces.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided an edge-illuminating emitter panel or edge light panel in a liquid crystal display device. The edge light panel includes a transparent resin substrate having an irregular reflection surface with a mesh pattern formed thereon. A mesh size of the pattern varies with the distance away from a primary light source which is juxtaposed with a side of the substrate. The side is so finished as to provide a rough surface for permitting light issued from the light source to effectively enter the substrate. The rough surface is continually formed along the side. The thus formed rough surface ensures the light incident on the side a sure entrance as well as a sure difusion thereof, whereby the edge light panel improves the display device in brightness and uniformity of in display clarity. The rough surface may be formed intermittently or formed on at least a part of the side. The rough surface may be so formed as to have its roughness vary stepwise or continuously with the distance away from the light source.
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Citations
18 Claims
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1. An edge light panel for a surface light source device having at least one primary light source, comprising:
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a transparent resin substrate having a plurality of edge surfaces about a periphery thereof, a front surface, and a rear surface; wherein said rear surface of said transparent resin substrate has a mesh pattern formed thereon to define an irregular reflection surface; wherein at least one of said plurality of edge surfaces is adapted to be juxtaposed with the at least one primary light source, and comprises means for permitting light from the at least one primary light source incident on said at least one of said plurality of edge surfaces, respectively, to pass through said at least one of said plurality of edge surfaces and into said transparent resin substrate; wherein said means comprises a roughened portion of said at least one of said plurality of edge surfaces; wherein said roughened portion of said at least one of said plurality of edge surfaces is formed intermittently along said at least one of said plurality of edge surfaces; and wherein said mesh pattern has mesh sizes which vary as a function of the distance from said at least one of said plurality of edge surfaces. - View Dependent Claims (17, 18)
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2. An edge light panel for a surface light source device having at least one primary light source, comprising:
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a transparent resin substrate having a plurality of edge surfaces about a periphery thereof, a front surface, and a rear surface; wherein said rear surface of said transparent resin substrate has a mesh pattern formed thereon to define an irregular reflection surface; wherein at least one of said plurality of edge surfaces is adapted to be juxtaposed with the at least one primary light source, and comprises means for permitting light from the at least one primary light source incident on said at least one of said plurality of edge surfaces, respectively, to pass through said at least one of said plurality of edge surfaces and into said transparent resin substrate; wherein said means comprises a roughened portion of said at least one of said plurality of edge surfaces; wherein said roughened portion of said at least one of said plurality of edge surfaces is formed over only a part of said at least one of said plurality of edge surfaces; and wherein said mesh pattern has mesh sizes which vary as a function of the distance from said at least one of said plurality of edge surfaces. - View Dependent Claims (15, 16)
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3. An edge light panel for a surface light source device having at least one primary light source, comprising:
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a transparent resin substrate having a plurality of edge surfaces about a periphery thereof, a front surface, and a rear surface; wherein said rear surface of said transparent resin substrate has a mesh pattern formed thereon to define an irregular reflection surface; wherein at least one of said plurality of edge surfaces is adapted to be juxtaposed with the at least one primary light source, and comprises means for permitting light from the at least one primary light source incident on said at least one of said plurality of edge surfaces, respectively, to pass through said at least one of said plurality of edge surfaces and into said transparent resin substrate; wherein said means comprises a roughened portion of said at least one of said plurality of edge surfaces; wherein said roughened portion of said at least one of said plurality of edge surfaces is formed only near opposing ends of said at least one of said plurality of edge surfaces; and wherein said mesh pattern has mesh sizes which vary as a function of the distance from said at least one of said plurality of edge surfaces. - View Dependent Claims (13, 14)
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4. An edge light panel for a surface light source device having at least one primary light source, comprising:
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a transparent resin substrate having a plurality of edge surfaces about a periphery thereof, a front surface, and a rear surface; wherein said rear surface of said transparent resin substrate has a mesh pattern formed thereon to define an irregular reflection surface; wherein at least one of said plurality of edge surfaces is adapted to be juxtaposed with the at least one primary light source, and comprises means for permitting light from the at least one primary light source incident on said at least one of said plurality of edge surfaces, respectively, to pass through said at least one of said plurality of edge surfaces and into said transparent resin substrate; wherein said means comprises a roughened portion of said at least one of said plurality of edge surfaces; wherein said roughened portion of said at least one of said plurality of edge surfaces is formed with a degree of coarseness which varies along said at least one of said plurality of edge surfaces; and wherein said mesh pattern has mesh sizes which vary as a function of the distance from said at least one of said plurality of edge surfaces. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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Specification