Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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A Review of RRAM-based Synaptic Device to Improve Neuromorphic Systems

뉴로모픽 시스템 향상을 위한 RRAM 기반 시냅스 소자 리뷰

  • Park, Geon Woo (Kyungpook National University Electronics Engineering) ;
  • Kim, Jae Gyu (Kyungpook National University Electronics Engineering) ;
  • Choi, Geon Woo (Kyungpook National University Electronics Engineering)
  • 박건우 (경북대학교 전자공학부) ;
  • 김제규 (경북대학교 전자공학부) ;
  • 최건우 (경북대학교 전자공학부)
  • Received : 2022.09.01
  • Accepted : 2022.09.21
  • Published : 2022.09.30
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Abstract

In order to process a vast amount of data, there is demand for a new system with higher processing speed and lower energy consumption. To prevent 'memory wall' in von Neumann architecture, RRAM, which is a neuromorphic device, has been researched. In this paper, we summarize the features of RRAM and propose the device structure for characteristic improvement. RRAM operates as a synapse device using a change of resistance. In general, the resistance characteristics of RRAM are nonlinear and random. As synapse device, linearity and uniformity improvement of RRAM is important to improve learning recognition rate because high linearity and uniformity characteristics can achieve high recognition rate. There are many method, such as TEL, barrier layer, NC, high oxidation properties, to improve linearity and uniformity. We proposed a new device structure of TiN/Al doped TaOx/AlOx/Pt that will achieve high recognition rate. Also, with simulation, we prove that the improved properties show a high learning recognition rate.

Keywords

Acknowledgement

본 논문은 2022학년도 경북대학교 진로취업과의 지원에 의하여 연구되었음.

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