Ask Touch Guy!

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Send him an e-mail at asktouchguy@touchintl.com.

I’m mounting a projected capacitive touch screen to a 17” monitor and am trying to find out how much of a gap I need to leave between the touch screen and LCD glass. Is the gap dependent upon the type of touch screen used? Also, do you have any suggestions for how to mount it to the LCD or bezel?

Dear Victor: As they say on the London Underground, “Mind the Gap”.  The separation between the back of the touch sensor and the front of the LCD is important for two reasons—optical and electrical. In general, one wants the touch sensor to be as close to the display as practical, so that there is no […]

I’m trying to figure out how multi-touch controllers work and have a few questions: Why are certain multi-touch controllers unable to sense more than 2 touches? What are the device limitations? How does a 10-point sensing controller overcome this?

Hi Raji, So, on this Valentine’s Day you want a date with Multi-Touch? Or are you looking to make that special commitment? Either way, I can help you out … As Touch Guy says, the best predictor of tomorrow is what happened yesterday.  In the long 25 year reign of resistive touch, the electronics went from […]

I am prototyping an in-car computing and entertainment system and am hoping you can recommend a touch screen that fulfills my requirements. Can you help?

Hey Touch Guy, I am prototyping an in-car computing and entertainment system and am hoping you can recommend a touch screen that fulfills my requirements. I’m looking for: 7″ screen size Low or reasonable cost unit VGA and standard AV input with auto or manual switching Multi-touch capable Minimum of 800×600 screen resolution Open frame […]

My company is developing a sleek new GPS and we’re looking for the right touch solution. We’ve looked at projected capacitive touch screens, but feel the cost will push our product’s price point up too much. What do you suggest?

Hey Touch Guy, My company is developing a sleek new GPS and we’re looking for the right touch solution. We’ve looked at projected capacitive touch screens, but feel the cost will push our product’s price point up too much. Our touch screen requirements are: 4.3″ Screen High Optics Scratch Resistant Anti-Glare Screen Lower Cost Display […]

I stepped on my fancy iPhone 4 and whole screen is completely cracked! I can barely see the images, but somehow it still works! How is this possible? – Astonished Jim, Little Rock, Arkansas

Dear Astonished Jim in Arkansas, Touch guy is about to go on vacation, so thank you for an easy question! As I’m sure you know, the iPhone uses projected capacitive technology and one of the main benefits of this technology is that it will “last forever.” Touch Guy did not really mean that you could […]