FLEPS 2021

Qin (D2) presented his research in IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS) 2021 held online on June 20-23, 2021 (Presentation date: 21st).

Qin’s presentation is on scratchpad memory for flexible electronics using low-voltage organic thin-film transistors (OTFTs), which are attracting attention for their applications in flexible sensors due to their flexibility and low cost of fabrication. In such applications, a memory that can store data in the vicinity of the sensor is required. In this study, based on the structure of silicon-based SRAM circuits, we proposed a memory cell with better area efficiency and stability by using a p-type transistor as the access transistor. In addition, a degradation mitigation circuit was employed to prevent OTFT degradation and to improve data retention time. Through measurements on a test chip, we verified that a small scale array of the proposed scratchpad memory works correctly and that the degradation mitigation circuit prevents the degradation of the memory cell.

  • Zhaoxing Qin, Kazunori Kuribara, and Takashi Sato, “An SRAM-Based Scratchpad Memory for Organic IoT Sensors,” The IEEE International Conference on Flexible, Printable Sensors and Systems (FLEPS), June 2021.
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