Jean was a member of the Traitorous Eight. He worked as a silicon transistor pioneer. He is remembered for making the planar process. He helped make computers smaller by using a chip. The planar process is a method of producing diffused junctions in semi conductor devices. Holes are etched into an oxide layer formed on a silicon substrate. Which causes impurities to be diffused through the holes. http://en.wikipedia.org/wiki/Planar_process
http://en.wikipedia.org/wiki/Jean_Hoerni
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