METHOD FOR MANUFACTURING HIGH-CAPACITANCE STORAGE NODE STRUCTURE IN SUBSTRATE AND SUBSTRATE HAVING HIGH-CAPACITANCE STORAGE NODE

PROBLEM TO BE SOLVED: To provide a simple method for manufacturing the high-capacitance storage node structure of a DRAM(dynamic random access memory), etc. SOLUTION: In order to form a high-capacitance storage node structure in a substrate 10, a negative resist area 16 and a positive resist area 18...

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Hauptverfasser: MARK C HEIKEE, WILLIAM H MA, DAVID V HOLICK, STEPHEN J HORMES
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creator MARK C HEIKEE
WILLIAM H MA
DAVID V HOLICK
STEPHEN J HORMES
description PROBLEM TO BE SOLVED: To provide a simple method for manufacturing the high-capacitance storage node structure of a DRAM(dynamic random access memory), etc. SOLUTION: In order to form a high-capacitance storage node structure in a substrate 10, a negative resist area 16 and a positive resist area 18 are formed in an exposed area 14 by patterning a hybrid resist 12. After the positive resist area 18 is removed, the substrate 10 is etched by using the non-exposed part of the hybrid resist 12 and the negative resist area 16 as masks. As a result, a trench 22 and a projecting section 24 which is positioned at the center of the trench 22 and projects upward are formed in the substrate 10. Then, a capacitor 26 is formed by coating the side wall of the trench 22 and the projecting section 24 with a dielectric material 28 and filling up the trench 22 with a conductive material 30.
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subjects APPARATUS SPECIALLY ADAPTED THEREFOR
BASIC ELECTRIC ELEMENTS
CINEMATOGRAPHY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
ELECTROGRAPHY
HOLOGRAPHY
MATERIALS THEREFOR
ORIGINALS THEREFOR
PHOTOGRAPHY
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES
PHYSICS
SEMICONDUCTOR DEVICES
title METHOD FOR MANUFACTURING HIGH-CAPACITANCE STORAGE NODE STRUCTURE IN SUBSTRATE AND SUBSTRATE HAVING HIGH-CAPACITANCE STORAGE NODE
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