Flexible Electronics Sensors for Tactile Multi-Touching
AbstractFlexible electronics sensors for tactile applications in multi-touch sensing and large scale manufacturing were designed and fabricated. The sensors are based on polyimide substrates, with thixotropy materials used to print organic resistances and a bump on the top polyimide layer. The gap between the bottom electrode layer and the resistance layer provides a buffer distance to reduce erroneous contact during large bending. Experimental results show that the top membrane with a bump protrusion and a resistance layer had a large deflection and a quick sensitive response. The bump and resistance layer provided a concentrated von Mises stress force and inertial force on the top membrane center. When the top membrane had no bump, it had a transient response delay time and took longer to reach steady-state. For printing thick structures of flexible electronics sensors, diffusion effects and dimensional shrinkages can be improved by using a paste material with a high viscosity. Linear algorithm matrixes with Gaussian elimination and control system scanning were used for multi-touch detection. Flexible electronics sensors were printed with a resistance thickness of about 32 µm and a bump thickness of about 0.2 mm. Feasibility studies show that printing technology is appropriate for large scale manufacturing, producing sensors at a low cost.
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Chang, W.-Y.; Fang, T.-H.; Yeh, S.-H.; Lin, Y.-C. Flexible Electronics Sensors for Tactile Multi-Touching. Sensors 2009, 9, 1188-1203.
Chang W-Y, Fang T-H, Yeh S-H, Lin Y-C. Flexible Electronics Sensors for Tactile Multi-Touching. Sensors. 2009; 9(2):1188-1203.Chicago/Turabian Style
Chang, Wen-Yang; Fang, Te-Hua; Yeh, Shao-Hsing; Lin, Yu-Cheng. 2009. "Flexible Electronics Sensors for Tactile Multi-Touching." Sensors 9, no. 2: 1188-1203.