CMOS INTEGRATED CIRCUIT MANUFACTURING PROCESS Russian patent published in 1995 - IPC

Abstract RU 2051443 C1

FIELD: microelectronics. SUBSTANCE: insulating layer of thermal silicon dioxide is formed on surface of substrate of first polarity of conductivity with pockets of second polarity of conductivity; all source and drain regions and isolating regions of MOS transistors of both polarities are opened simultaneously; auxiliary silicon dioxide layer of thickness at least 0.3 of that of insulating layer is grown on surfaces of open regions; source and drain regions and n-type isolating regions are photoengraved by using mask with windows of greater size than openings in insulating layer; then n-type dope alloying and accelerated low-temperature oxidation of n-type alloyed regions in wet environment is carried out, sources, drains, and isolating p-type regions are alloyed through auxiliary layer, whereupon insulating and auxiliary layers are photoengraved while opening regions for gate and contacts; gate dielectric and gate electrode are formed. EFFECT: facilitated procedure. 4 cl, 4 dwg

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RU 2 051 443 C1

Authors

Agrich Jurij Vladimirovich[Ru]

Ivankovskij Maksim Maksimovich[Lv]

Sul'Zhits Sergej Antonovich[Lv]

Mukhin Aleksej Alekseevich[Lv]

Dates

1995-12-27Published

1992-01-27Filed