SEMICONDUCTOR MEMORY DEVICES INCLUDING SEPARATE UPPER AND LOWER BIT LINE SPACERS AND METHODS OF FORMING THE SAME
A volatile memory device can include a bit line structure having a vertical side wall. A lower spacer can be on a lower portion of the vertical side wall, where the lower spacer can be defined by a first thickness from the vertical side wall to an outer side wall of the lower spacer. An upper spacer...
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creator | Jang, Semyeong Kim, Daeik Park, Jemin Hwang, Yoosang |
description | A volatile memory device can include a bit line structure having a vertical side wall. A lower spacer can be on a lower portion of the vertical side wall, where the lower spacer can be defined by a first thickness from the vertical side wall to an outer side wall of the lower spacer. An upper spacer can be on an upper portion of the vertical side wall above the lower portion, where the upper spacer can be defined by a second thickness that is less than the first thickness, the upper spacer exposing an uppermost portion of the outer side wall of the lower spacer. |
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subjects | BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES |
title | SEMICONDUCTOR MEMORY DEVICES INCLUDING SEPARATE UPPER AND LOWER BIT LINE SPACERS AND METHODS OF FORMING THE SAME |
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