Japan Semiconductor Innovation 50     (T-9 1980s)

High Quality Silicon Wafers

Silicon transistor manufacturing started in Japan in the 1960's. High purity silicon crystal was necessary, and Japanese semiconductor manufacturers started silicon wafer manufacturing by developing in-house crystal pulling machine and processing machine. They then came to excel over-seas manufacturers in the quality of silicon wafer processing as well as crystal pulling, and started marketing of silicon wafers in overseas in the 1970's. They also led the industry in large diameter wafers later, and supply more than 60% to world-wide demand.

Silicon ingot made by Toshiba in 1956

Silicon ingots and wafers
Quote from Toshiba company history Quote from Shin-Etsu Chemical HP


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