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Fundamentals of Capacitive Touch Technology

Posted on: Nov 2, 2010 | Duration: 30 min.
Course | 2736 views
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Touch control is replacing physical buttons, sliders, and wheels as the means for a human-machine interface (HMI). Some advantages to touch screen control is that it is both and input and output (saving separate keyboard and mouse for computer applications) and it has no moving parts making it less susceptible to mechanical stress and dust.

This course provides an introduction to capacitive touch technology, including theory and the use of a touch control evaluation kit. Content includes:

  • What is capacitive touch control?
  • History of the technology and applications
  • The basics of a capacitor
  • Current capacitive touch technologies
  • Control interface
  • Physical design
  • Screen materials
  • Evaluation kit demonstration




  • About the Presenter:
    Steven Keeping, Technology Analyst
    Steven Keeping is a qualified engineer who worked in the electronics divisions of Eurotherm and then BOC for seven years before joining Electronic Production magazine in 1993. Steven then spent 13 years in senior editorial and publishing roles on electronics manufacturing and design titles for Trinity Mirror, CMP and RBI in the U.K. and Australia. In 2006, Steven became a freelance journalist specializing in electronics. He is based in Sydney.

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    15 comments
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    JCJung Posted Nov 9, 2010

    Fine, Clear Lecture ! ! ! Thanks

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    Steve.K Posted Nov 10, 2010

    Thanks JCJung. There are some exciting developments happening in capacitive control technology. I can't wait to see how the next generation of smartphone HDIs are enhanced. Are your working on any touch control applications in your job? And please let me know what other Fundamentals courses you'd like to see here.

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    TheJohn Posted Nov 10, 2010

    So how do I get a copy of the foil set???

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    patrick.mannion Posted Nov 10, 2010

    Hi TheJohn, unfortunately, due to copyright protection rules we can't distribute the foils. Sorry about that. Glad you enjoyed the course!

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    electro Posted Nov 14, 2010

    Good job. Thanks !!

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    Steve.K Posted Nov 14, 2010

    Thanks electro. Please let me know if you you'd like to see more on any of the areas covered.

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    tooty Posted Nov 24, 2010

    Nice presentation. The diagrams are most helpful in explaining what he is talking about.

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    Saminathan Posted Dec 1, 2010

    Very good and Nice presentation.

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    Patk0317 Posted Dec 1, 2010

    This was a good overview of Capacitive Sens technology and how it works. Since it is in just about every new consumer product on the market, it is nice to have an idea of exactly how it works. Pretty simple actually.

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    Hajari Posted Dec 22, 2010

    An excellent lecture with a deep insight.

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    Deepakudage Posted Mar 11, 2011

    Technology is really taking the world to the new height everyday.Thanks for sharing such a wonderful information with us. http://www.laptops4review.com/

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    KALI RAJAN Posted Oct 5, 2011

    Nice presentation. It gives good overview of capacitive touch technology. we want to know the comparison between capacitive and other touch technology.

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    creasyben Posted Nov 25, 2011

    Good presentation. I was attracted to this course because of the title that suggested a connection with the touch switch lamp, and i was curious about it,but unfortunately it doesn't cover such a device. Anyway thanks a lot and keep up the good work. Cheers.

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    agk Posted Nov 25, 2011

    Cypress has good capsense technology. Their CY3269A EZ color demo kit is so nicely designed. The color triangle provided on the circuit board with the capsense technology gives any light color touched by us through a tri color LED.Also the LED brightness can be controlled by touch slider. Superb.

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    ItsmeN Posted Jan 15, 2013

    This is a awesome writeup, I learnt a lot...thanks buddy!

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