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Journal of Display Technology

Journal of Display Technology


  • Vol. 5, Iss. 6 — Jun. 1, 2009
  • pp: 178–183

A Large Area Flexible Array Sensors Using Screen Printing Technology

Wen-Yang Chang, Te-Hua Fang, Heng-Ju Lin, Yu-Tang Shen, and Yu-Cheng Lin

Journal of Display Technology, Vol. 5, Issue 6, pp. 178-183 (2009)

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A flexible electronics sensor for large area sensing was developed using a screen printing technology with the thixotropy sol-gel materials to form the microstructure patterns on two polyimide (PI) sheets. A flexible sensor is 150$\times$150 mm$^{2}$, including posts, resistances, bumps, and electrode traces. The space between the top electrode and the resistance layer provided a buffer distance for large bending. Experimental results show that array microstructures have good morphological profiles at a screen speed of 10 mm/s, a squeegee pressure of 213 kPa, and a separation speed of 0.4 mm/s using the print–print mode. A membrane with a bump protrusion had a large displacement and a quick sensitive response because the bump provided a concentrated force of von Mises stress on the membrane center. For printing thick structures, diffusion effects and dimensional shrinkages can be reduced when a paste material with a higher viscosity is used. The results exhibit a potential for using in the flexible sensing and higher temperatures. In additional, the fabrication is the low cost and potential higher throughput in flexible electronics applications.

© 2009 IEEE

Wen-Yang Chang, Te-Hua Fang, Heng-Ju Lin, Yu-Tang Shen, and Yu-Cheng Lin, "A Large Area Flexible Array Sensors Using Screen Printing Technology," J. Display Technol. 5, 178-183 (2009)

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