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Difference between capacitive and resistive touchscreens?

Does your phone has capacitive or the resistive screen ? What is the difference between these ? Go through the faq and familiarize your self with the two different forms of the touchscreens.

Q. So what is the difference from the application point of view between capacitive and resistive touch screens.

A. In a resistive touch screen if a user presses two fingers simultaneously – resistive touch screen can not detect it. Capacitive touch screen can. Movement of the fingers are tough to detect using the resistive touchscreen. Capacitive touchscreen can. iPhone is perfect example of the capacitive touch screen. You can zoom a picture using two fingers. It makes the things very intuitive. Playing games on capacitive touchscreen makes it very intuitive.

Q. Which of these two are more expensive

A. The capacitive touch screen is more expensive than the resistive touch screen. The price of the capacitive touch screens are, though, falling, as their usage and volume is increasing.

Q.  How does the pin out of the resistive touch screen and capacitive touch screen look like ?

A. The resistive touch screen has 4 pins and the capacitive touch screen has 5 pins. That is the way to find the difference if you are handed over a separate glass of a resistive or a capacitive touchscreen.

Q. So how do they technologically look different.

A.  In resistive touchscreen the resistance between the two layers of the glass change when  pressure of touch is applied. By measuring the change in the pressure it is possible to find the coordinate of the place where pressure has been applied.

In  capacitive touchscreen touching the surface of the screen results in change in capacitance. This is then used to detect the presence of the finger and its location.

Q. What is the effect of the pressure on the resistive Vs capacitive touchscreen.

A. Resistive touch screen works on pressure. So it works very well with stylus. A drawback of this is that it does not work as you drag on. This is obvious to conclude.

The capacitive touch screen does not depend upon the pressure and since it works just on touch, it works smoothly when you drag your finger tips. This helps in the design of highly useful user interfaces.

Q. Will capacitive touch screen work if you have gloves in your finger ?

A. No. The finger and the touch screen create capacitance. The Human body has amount of capacitive and conductive property that helps. This is not possible with the gloves on.

Q. Can you give some example of the devices using capacitive touch screen.

A. iPhone is the most prominent example. iPad and G1 Android phone also uses capacitive touch screen.

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