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公开(公告)号:DE3064246D1
公开(公告)日:1983-08-25
申请号:DE3064246
申请日:1980-06-24
Applicant: IBM
Inventor: GHEZ RICHARD ANGELO , GUNN JOHN BATTISCOMBE , HAMMER ROBERT , VAN VECHTEN JAMES ALDEN
Abstract: A pressure differential is provided across substrate 1 having hole 21A-G to be etched to a specific dimension by means of an etchant which forms menisci extending across each hole opening 22A-G. The etchant is retained in each hole due to its surface tension and under the pressure differential is drawn partly through hole openings 22A-G. When hole openings 22A-G reach the specific desired dimension, the etchant is drawn out of the holes by the pressure differential and etching stops.