Patent ID: 6098643
Filing Date: 2000-08-08
Classification: B08B,H01L,Y10S

Abstract:
A bath system for processing semiconductor wafers comprisinga container receiving at least one semiconductor wafer and holding wafer processing liquid, said container having two upper vertical sidewalls, a bottom and two oblique walls, each oblique wall between one of said upper vertical sidewalls and said bottom, said oblique walls tapering down to said bottom so as to provide space for only one inlet in a cross-sectional view of said two upper vertical sidewalls, bottom and two oblique walls;an inlet mounted to said bottom, said inlet introducing said wafer processing liquid into said container; andat least one sonic transducer attached to each oblique walls on the outside of said container, said sonic transducer on each oblique wall arranged so that energy from said sonic transducer is directed across said wafer during processing.