Touchscreen

Advanced in touchscreen technology mean that you can have a world of information and services at the touch of your finger. Many customers are asking us if they can have an industrial touchscreen as good as a tablet. The answer is of course Yes.

 

Capacitive Touch

Capacitive touchscreens work by sensing the conductive properties of an object, usually the skin on your fingertip. They are more responsive than a resistive screen when it comes to gestures such as swiping and pinching. Capacitive touchscreens can also be operated while wearing certain types of gloves.

  • Clear, bright appearance
  • Responsive to the lightest of touches
  • Supports gesture/multi-touch functionality
  • Can work with gloved hands

 

Resistive Touch

A Resistive touchscreen requires a touch with a certain amount of force applied to its surface. The touchscreen consists of a flexible film upper layer and a rigid lower layer. When the screen is pressed, the top layer is pushed onto the bottom layer — the technology senses a change in electrical voltage at the terminal outputs as the flexible and rigid layers come into contact with each other and registers input. Resistive touchscreens can be operated with a finger, a fingernail, a stylus or any other pointing object. However this technology is rapidly disappearing and we address some of the challenges why in our article on RTP technology.

  • Low production cost
  • High resistance to dust and water
  • Best suited for handwriting recognition

 

Firmware tuning

The touchscreen’s firmware is a set of algorithms that can be adjusted to ensure the touchscreen delivers the best performance for its intended application.

As well as providing the means to set pre-configured attributes such as touch resolution, screen orientation, number of touch points and type of gesture recognition enabled, fine tuning the firmware can also ensure the touchscreen’s performance can be optimised  for the following requirements:

  • Specific cover lens materials and thicknesses
  • Gloved finger inputs of various material types
  • Water rejection
  • Improved immunity to EMI through software filtering.

 

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