Which engineer developed the first batch of planar integrated circuits in the world?

At the end of 1950s, people thought it was "impossible" to miniaturize a circuit composed of a large number of independent components-a large number of wires connecting so many components in a complex circuit limited the further reduction of the volume. In addition, the number of parts is increasing rapidly, and the contradiction that the process of rapid assembly into finished products can not keep up is becoming increasingly acute. At this juncture, jack kilby (1923 ~), an electronic engineer who used to be the deputy manager of Texas Instruments, stood out. 1958 12 September, the world's first batch of planar IC-integrated about 20 components in an area of less than 4 square millimeters, which was successfully tested by kilby. 1959 On February 6th, kilby applied for a patent in the US Patent Office, and made a splash in the exhibition held by the American Society of Radio Engineers the following year.