Method for making an LED array

Details Method for making an LED array Method for making an LED array

1991-09-20

1993-09-07

Chaudhuri, Olik

Fishing, trapping, and vermin destroying

437 4, 437127, 437905, H01L 21265, H01L 2120

Patent

active

052428400

ABSTRACT:
There is disclosed a method for making array capable of realizing large output and large-scale integration by using a heterogenous film which can electrically insulate between LEDs, (LEDs) by the diffusion of an impurity into a substrate. The improved LED array manufacturing method includes the steps of: forming a luminescent layer, of a first conductivity type, a transparent layer and a cap-layer over the semiconductor substrate, forming of a cap layer made into a given pattern by etching a given portion of said cap layer; forming of a diffusion region converted into the first conductivity type by the injection of an impurity into a given portion of the transparent layer; forming an oxide film on the entire surface except the area where the cap layer is covering the transparent layer 13; and forming an electrode over the cap layer and a common electrode under the semiconductor substrate.

REFERENCES:
patent: 3636617 (1972-01-01), Schmidt et al.
patent: 4755485 (1988-07-01), Tsai
patent: 4924276 (1990-05-01), Heime et al.

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