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Light-emitting diode with diagonal faces

  • US 5,087,949 A
  • Filed: 03/05/1991
  • Issued: 02/11/1992
  • Est. Priority Date: 06/27/1989
  • Status: Expired due to Term
First Claim
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1. A transparent light-emitting diode comprising:

  • an opaque back face at a back of the light-emitting diode;

    a front electrical contact at the front of the light-emitting diode; and

    a body of transparent semiconductor between the back and the front electrical contact having a back p-n junction substantially parallel and adjacent to the back face and remote from the front electrical contact, the body being in the form of a polygonal base adjacent to the back and having side faces perpendicular to the back p-n junction, the body also being surmounted by a truncated polygonal pyramid through the side faces of which light is emitted from the light-emitting diode, each face of the pyramid intersecting a face of the base along a line, the front electrical contact being in the truncated end of the pyramid.

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