Process for the chemical etch polishing of semiconductors

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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156345, 156662, H01L 21306

Patent

active

042447755

ABSTRACT:
A method for thinning and polishing semiconductor materials such as gallium arsenide is disclosed. This method utilizes a chemical etchant in conjunction with a grooved flat polishing plate. The polishing plate has a hardness greater than 2 on the mohs scale. High quality polished surfaces are obtained. Exemplary of polishing plate materials is quartz.

REFERENCES:
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patent: 3342652 (1967-09-01), Reisman et al.
patent: 3549439 (1970-12-01), Kaueggia et al.
patent: 3888053 (1975-06-01), White et al.
Ryll, "Lapping Plate . . . Grooves" Western Electric Technical Digest No. 50 (4/78) pp. 25-26.
Handbook of Chemistry and Physics, 48th Ed. R. Weast editor, The Chemical Rubber Co. Cleveland Ohio p. F-17.
Kirk- Othmer Encyclopedia of Chemical Technology, 2nd Edition, vol. 4, p. 200.

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