Touch screens

What are touch screens

A touchscreen is an electronic visual display that the user can control through simple or multi-touch gestures by touching the screen with one or more fingers. Some touchscreens can also detect objects such as a ordinary styles or specially coated gloves. The user can use the touchscreen to react to what is displayed and to control how it is displayed (for example by zooming the text size).

What is it

A type of display screens that has a touch-sensitive transparent panel covering the screen. Instead of using a pointing devise such as a mouse or light pen, you can use your finger to point directly to objects on the screen.

Although touch screens provide a natural interface for computer novices, they are unsatisfactory for most applications because the finger is such a relatively large object. It is impossible to point accurately to small areas of the screen. In addition, most users find touch screens tiring to the arms after long use.

How does it work

The materials used in these layers which include indium tin oxide are not actually transparent but they are so thin, that your eyes can’t see them and so it looks like the screen is just made out of one piece of glass. Typically you can’t see anything that is thinner than 0.1mm with your eyes and so all the technology sitting on top of the glass layer is invisible.