Production of high radiance light emitting diodes

Details Production of high radiance light emitting diodes Production of high radiance light emitting diodes

1977-05-27

1978-04-25

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156345, 156640, 156644, 156655, 156659, 156662, 252 795, H01L 21306

Patent

active

040861260

ABSTRACT:
For aligning holes in substrates with the light emitting regions of light emitting diodes, particularly Burrus type diodes, an etchant based on an alkaline peroxide solution is ejected or sprayed onto the masked surface of the substrate. The etchant is selective and also avoids production of insoluble oxides in partially etched holes, as often happens in conventional processes. The invention is particularly applicable to producing holes through substrates to align optical fibres with the light emitting regions.

REFERENCES:
patent: 2846346 (1958-08-01), Bradley
patent: 3981023 (1976-09-01), King et al.

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