Importance

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Abstract

A semiconductor device includes a substrate including a cell array area and an interface area, bit lines on the cell array area and extending in a first horizontal direction, back gate lines on the bit lines and extending in a second direction, insulating blocks on the interface area and each overlapping the back gate lines in the second direction, word lines among which each pair of two adjacent word lines are on both sides of a corresponding back gate line, respectively, and extending on a sidewall of a corresponding insulating block, active semiconductor layers each between a corresponding back gate line and a corresponding word line on the cell array area and having one end electrically connected to a corresponding bit line, and a word line contact on the interface area and on a corresponding word line and a corresponding insulating block adjacent thereto.

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First Claim