Self-aligned structure and method for confining a melting point in a resistor random access memory

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United States of America Patent

PATENT NO 8243494
APP PUB NO 20090020746A1
SERIAL NO

12235773

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Abstract

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A process in the manufacturing of a resistor random access memory with a confined melting area for switching a phase change in the programmable resistive memory. The process initially formed a pillar comprising a substrate body, a first conductive material overlying the substrate body, a programmable resistive memory material overlying the first conductive material, a high selective material overlying the programmable resistive memory material, and a silicon nitride material overlying the high selective material. The high selective material in the pillar is isotropically etched on both sides of the high selective material to create a void on each side of the high selective material with a reduced length. A programmable resistive memory material is deposited in a confined area previously occupied by the reduced length of the poly, and the programmable resistive memory material is deposited into an area previously occupied by the silicon nitride material.

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Patent Owner(s)

Patent OwnerAddress
MACRONIX INTERNATIONAL CO LTDHSINCHU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Shih-Hung Hsinchu County, TW 175 4671
Ho, ChiaHua Kaohsiung, TW 74 3941
Hsieh, Kuang Yeu Hsinchu, TW 65 3244
Lai, Erh-Kun Taichung County, TW 259 6334

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