Instrument for Selective Modification of Planar Circuits
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Reference  discusses the general concept of the scanning acoustic microscope. In reference (2], the use of focused high frequency ultra sound for the selective deposition of gold is reported. Here, those concepts are used in an ultrasonic, electroplating instrument for the selective repair or modification of circuit conductors, such as are found on integrated circuit chips. The instrument can be used for the elimination of detected defects or for making engineering changes.