Organic electrochemical transistor‐based tactile perception: From sensing to neuromorphic processing

Tactile perception electronics bridge charge‐transport‐dominated organic optoelectronic devices with ion‐mediated biological systems and are emerging as a critical research direction for next‐generation artificial intelligence. Organic electrochemical transistor (OECT), whose conductivity can be modulated via electrochemical ionic doping, exhibits distinctive optoelectronic characteristics. Benefiting from their intrinsic mechanical flexibility, solution processability, and biocompatibility, OECT provides an attractive platform for flexible intelligent sensing technologies. Over the past decade, advances in functional material design, device architecture, and integration techniques have enabled rapid progress in OECT‐based biophysical signal sensing and artificial synaptic perception. In this review, we summarize recent developments in tactile‐sensing organic transistors, focusing on device architectures, operating mechanisms, and fabrication strategies that support temperature and pressure signal transduction, transmission, and processing. Particular attention is devoted to the strategies developed in organic transistors designed for temperature and pressure sensing, highlighting their performance and application potential. Finally, emerging research strategies for next‐generation tactile OECT are discussed, together with key challenges and future opportunities.