US Patent Issued to University of Southern California on July 15 for "Pick and placement of semiconductor chips based on nozzleless self-focusing acoustic droplet ejector" (California Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,362,205, issued on July 15, was assigned to University of Southern California (Los Angeles).

"Pick and placement of semiconductor chips based on nozzleless self-focusing acoustic droplet ejector" was invented by Eun Sok Kim (Rancho Palos Verdes, Calif.) and Yongkui Tang (Pasadena, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for picking and placing semiconductor chips includes a liquid having a first surface and a second surface and a layer of semiconductor chips disposed over the first surface. Characteristically, the first surface is a liquid-air interface. The device also includes a focused ultrasonic transducer positioned to focus ...