Samsung Electronics Co., Ltd.

Skhynix Inc.

In Kyeong Yoo

Deok-kee Kim

Kyoung-won Na

Dong-Seok Suh

Hyunsang Hwang

Kwnag-Soo Seol

Seungyeol Oh

A multi-level synaptic weight device having a 3D vertical cross-point structure according to an embodiment includes a multi-level conductance structure configured to couple any one of multiple word lines to any one of multiple bit lines. The conductance structure may include a multiplexer, configured to include multiple selector switches coupled in parallel to the word line and to select any one of the multiple parallel-coupled selector switches in response to an externally applied selection signal; a fixed resistor block including multiple fixed resistors coupled to the bit line; a cross-point block configured such that the multiple selector switches in the multiplexer and the multiple fixed resistors in the fixed resistor block intersect in a matrix form so as to be coupled to each other and each of the selector switches in the multiplexer has a unique number of cross-points; and a conductive plate on the fixed resistor block.

Multi-level synaptic weight device of vertical cross-point structure in three dimension and fabrication thereof

A resistive memory device includes a vertical transistor and a variable resistance layer. The vertical transistor includes a gate electrode on a surface of a substrate, a gate insulation layer extending along a sidewall of the gate electrode, and a single crystalline silicon layer on the surface of the substrate adjacent to the gate insulation layer. At least a portion of the single crystalline silicon layer defines a channel region that extends in a direction substantially perpendicular to the surface of the substrate. The variable resistance layer is provided on the single crystalline silicon layer. The variable resistance layer is electrically insulated from the gate electrode. Related devices and fabrication methods are also discussed.

Resistive memory devices including vertical transistor arrays and related fabrication methods

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Yongin-si, South Korea

In Kyeong Yoo