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A review of sensing technologies for small and large-scale touch panels
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Paper Abstract

A touch panel is an input device for human computer interaction. It consists of a network of sensors, a sampling circuit and a micro controller for detecting and locating a touch input. Touch input can come from either finger or stylus depending upon the type of touch technology. These touch panels provide an intuitive and collaborative workspace so that people can perform various tasks with the use of their fingers instead of traditional input devices like keyboard and mouse. Touch sensing technology is not new. At the time of this writing, various technologies are available in the market and this paper reviews the most common ones. We review traditional designs and sensing algorithms for touch technology. We also observe that due to its various strengths, capacitive touch will dominate the large-scale touch panel industry in years to come. In the end, we discuss the motivation for doing academic research on large-scale panels.

Paper Details

Date Published: 13 June 2017
PDF: 13 pages
Proc. SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 1044918 (13 June 2017); doi: 10.1117/12.2270631
Show Author Affiliations
Humza Akhtar, Nanyang Technological Univ. (Singapore)
Qian Kemao, Nanyang Technological Univ. (Singapore)
Ramakrishna Kakarala, Synaptics Inc. (United States)


Published in SPIE Proceedings Vol. 10449:
Fifth International Conference on Optical and Photonics Engineering
Anand Krishna Asundi, Editor(s)

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