Semiconductor memory device

Static information storage and retrieval – Magnetic bubbles – Guide structure

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357 36, 357 15, 357 51, 357 71, 365149, 365154, 365155, 365175, H01L 2710, H01L 2948, H01L 2940

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048090522

ABSTRACT:
A semiconductor memory device is provided such as the type having flip-flop memory cells each including two bipolar transistors in cross connection with each other. In certain embodiments, at least a part of a Schottky barrier diode or capacitor in the memory cell is formed under a digit line. This memory device is greatly reduced in its required area, and the Schottky barrier diode and capacitor are negligibly influenced by the digit line. In other embodiments, it is arranged to provide different electrodes for the Schottky barrier diode and the capacitor to optimize construction in a minimized space.

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IBM TDB, Zandler, "Dynamic Schottky Storage Cell" vol. 17, No. 11, 4/75, pp. 3215-3216.
IBM TDB, Beers et al., "Integrated Harper Cell" vol. 18, No. 9, Feb. 76, pp. 2875-2877.

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