Samsung Electronics Co., Ltd.

Se Yun Park

Bo Un Yoon

Il Young Yoon

Hao Cui

Jong Hyuk Park

A semiconductor device that includes a plurality of word lines disposed on a substrate in which p-type and n-type active regions are defined, and extends in a first direction. A plurality of bit lines is disposed on the plurality of word lines and extends in a second direction, perpendicular to the first direction. A plurality of memory cells is disposed between the plurality of word lines and the plurality of bit lines and each includes a data storage pattern. The plurality of memory cells includes a plurality of dummy memory cells and a plurality of main memory cells. An upper surface of the data storage pattern of the main memory cells is higher than an upper surface of the data storage pattern of the dummy memory cells.

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Seoul, South Korea

Se Yun Park