Forming an ordered array for visual inspection

Details Forming an ordered array for visual inspection Forming an ordered array for visual inspection

1984-12-13

1986-05-27

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Work handled in bulk or groups

134 32, 134 34, B08B 100

Patent

active

045913927

ABSTRACT:
Disclosed is a method of producing a suitable array of semiconductor chips or other objects for visual inspection. Semiconductor chips on the order of a few hundred microns on each side are placed onto a mesh screen in a container, then submersed in deionized water, so that the chips begin to float and the fluid never covers the upper surfaces of the chips. Gently swirling the fluid causes the chips to orient in the center of the container. Continued swirling aligns the chips into an orderly array of rows and columns.

REFERENCES:
patent: Re30977 (1982-06-01), Zecher
patent: 3997358 (1976-12-01), Taylor
patent: 4156619 (1979-05-01), Griesshammer

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