Light emitting diode and its array and method of making the same

Details Light emitting diode and its array and method of making the same Light emitting diode and its array and method of making the same

1991-03-01

1992-01-28

Wojciechowicz, Edward J.

Fishing, trapping, and vermin destroying

357 16, 357 45, 357 47, 357 55, 437 19, 437107, 437127, 437133, 437134, 437248, 437906, H01L 3300, H01L 2124

Patent

active

050847422

ABSTRACT:
A light emitting diode and its array having improved light emitting efficiency are disclosed. A first layer of a semiconductor material of a first conductivity type and a second layer of a semiconductor material of a second conductivity type are formed on one surface of a substrate of a semiconductor material of the first conductivity type. A first electrode is formed on the second layer and a second electrode is formed on a surface of the substrate opposite the one surface. From the side of the first electrode a light which is not absorbed in the first and second semiconductor layers, but is absorbed by the first electrode, is directed through the first and second layers and the substrate to selectively alloy the interface between the substrate and the other electrode. This forms a non-alloyed region between the second electrode and the substrate directly opposite the first electrode and alloyed regions along each side of the non-alloyed region.

REFERENCES:
patent: 5007063 (1991-04-01), Kahen

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