Yield Engineering Systems, Inc.

Venugopal Govindarajulu

M Ziaul Karim

Dragan Cekic

Louis Navarro

A cleaning device includes a tank configured to contain a cleaning liquid and one or more substrates in the cleaning liquid. A megasonic transducer array is coupled to the tank and configured to direct megasonic frequency waves to surfaces of the substrates. Multiple pairs of ultrasonic transducers are also coupled to the tank and configured to direct ultrasonic frequency waves to surfaces of the substrates. The megasonic transducer array includes a support plate with a plurality of megasonic transducers and a central plane that extends perpendicular to the support plate. The multiple pairs of ultrasonic transducers are arranged in a mirror symmetric manner on opposite sides of the central plane.

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Lehi, UT, United States of America

Venugopal Govindarajulu