Samsung Electronics Co., Ltd.

Ki-Hoon Do

Tae-jin Park

Myung-Jin Kang

A phase change memory device includes a plurality of word lines, a plurality of lower electrodes, and a plurality of phase change material patterns. The plurality of word lines extend in a first direction and the plurality of word lines are arranged along a second direction perpendicular to the first direction. The lower electrodes are on the word lines and the lower electrodes are arranged in a direction diagonal to the first direction by a first angle. Each of the plurality of phase change material patterns are on a corresponding one of the plurality of lower electrodes.

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Seoul, South Korea

Ki-Hoon Do