32.3: Simple Single‐Layer Multi‐Touch Projected Capacitive Touch Panel | Zendy

Ho TszKin | Zendy; Lee ChungYung | Zendy; Tseng ManChun | Zendy; Kwok HoiSing | Zendy

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32.3: Simple Single‐Layer Multi‐Touch Projected Capacitive Touch Panel

Author(s) -

Ho TszKin,

Lee ChungYung,

Tseng ManChun,

Kwok HoiSing

Publication year - 2009

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1889/1.3256812

Subject(s) - capacitive sensing , capacitance , simple (philosophy) , signal (programming language) , computer science , node (physics) , layer (electronics) , point (geometry) , electrical engineering , electronic engineering , materials science , acoustics , engineering , electrode , nanotechnology , physics , philosophy , geometry , mathematics , epistemology , quantum mechanics , programming language

A simple projected capacitive touch panel is developed. This touch panel is capable of detecting multi‐point touch events. The device consists of a single piece of patterned transparent ITO glass and a sensing circuit. The applied driving signal is projected onto the sensing node in the form of an electric field. A charge sensing circuit is used to monitor the mutual capacitance between the driving and sensing nodes. This approach provides a simple and low cost alternative to current capacitive multi‐touch panel design.

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