ILLUMINATION DEVICE AND INPUT UNIT WITH ILLUMINATION DEVICE
First Claim
1. An illumination device comprising:
- a substrate with a recess portion formed in a surface;
a light emitting element installed in the recess portion; and
a light guide layer laminated on a surface of the substrate, wherein the light guide layer is formed of a thin resin film, and the resin film and the surface of the substrate are fixed via an adhesive layer therebetween.
1 Assignment
0 Petitions
Accused Products
Abstract
A recess portion is formed in a substrate to accommodate a light emitting element so as to be sealed with a sealant. A light guide layer formed of a thin transparent resin film is fixed onto the substrate via an adhesive layer to realize an illuminating device with a thin structure. The light emitted from the light emitting element is irradiated into the light guide layer via the sealant and the adhesive layer. The light fully reflecting on the boundary surfaces between the light guide layer and the adhesive layer, and between the light guide layer and the air layer passes inside the light guide layer. Then the light which has not fully reflected leaks outside from the surface of the transparent resin film which forms the light guide layer. This makes it possible to illuminate the surface of the illumination device 1A entirely with brightness.
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Citations
18 Claims
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1. An illumination device comprising:
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a substrate with a recess portion formed in a surface; a light emitting element installed in the recess portion; and a light guide layer laminated on a surface of the substrate, wherein the light guide layer is formed of a thin resin film, and the resin film and the surface of the substrate are fixed via an adhesive layer therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification