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Active matrix-based pressure sensor system with a 4 × 16 printed decoder designed with a flexible hybrid organic process design kit
Flexible and Printed Electronics ( IF 3.1 ) Pub Date : 2024-02-09 , DOI: 10.1088/2058-8585/ad20fa Palak Gupta , Justas Lukosiunas , Gabriel Cadilha Marques , Sebastian Raths , Sebastian Stehlin , Stefan Schlisske , Kai Exner , Karl-Phillip Strunk , Christian Melzer , Peter Erk , Josef Mittermaier , Anton Klotz , Jasmin Aghassi-Hagmann
Flexible and Printed Electronics ( IF 3.1 ) Pub Date : 2024-02-09 , DOI: 10.1088/2058-8585/ad20fa Palak Gupta , Justas Lukosiunas , Gabriel Cadilha Marques , Sebastian Raths , Sebastian Stehlin , Stefan Schlisske , Kai Exner , Karl-Phillip Strunk , Christian Melzer , Peter Erk , Josef Mittermaier , Anton Klotz , Jasmin Aghassi-Hagmann
The innovative field of printed sensor with a demand for high accuracy, sensitivity and durability has enabled a wide application area in sensing, healthcare etc. A large-area printed sensor system on a flexible foil substrate emplying p-type organic field-effect transistors (OFETs) is presented. Thereby, the OFET is fabricated through a hybrid manufacturing process, including photolithographically structured source- and drain-electrodes, ink-jet printed organic semiconductor, and spin-coated dielectric. Moreover, a dedicated device model, derived from the variable range hopping model, is developed and integrated together with process related design rules, materials properties and geometric information into a comprehensive process design kit (FH_OPDK). The FH_OPDK is integrated in a commercial electronic design automation tool and is used to design and perform post-layout simulations on logic gates, such as INV, NAND2, and NOR2 as well as circuitry such as ring oscillators and a 4 × 16 digital decoder. Several circuit topologies have been tested and evaluated in a detailed model-hardware correlation analysis. Finally we have optimized logic gates and the decoder in a PMOS only, pseudo CMOS design style. To demonstrate the feasibility of the full sensor system in hardware a 16 × 16 active matrix pressure sensor on a flexible substrate integrated with a 4 × 16 binary decoder was fabricated and tested. We have integrated our flexible hybrid sensor system with a PCB board and a microcontroller to demonstrate the hardware readout platform capable of detecting the weight of objects and visualizing a digital map of applied forces.
更新日期：2024-02-09
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