What types of touch displays are there?

There are various types of touch screens, which can be distinguished mainly according to different classification standards.

Classified by working principle and medium for transmitting information:

Resistive touch screen: It uses pressure sensing for control. The main part is a resistive film screen that matches the surface of the display very well. This touch screen can be touched with any object, even while wearing gloves, and can be used for handwriting recognition.

Capacitive touch screen: Sensing the touch behavior on the screen surface through electric field induction, including surface capacitive and projected capacitive. Projected capacitive touch screens use electrostatic field lines emitted by touch screen electrodes for sensing.

Infrared touch screen: Arrange infrared transmitting tubes and infrared receiving tubes in the X and Y directions, corresponding to each other to form a horizontal and vertical infrared matrix. This kind of touch screen is cheap, but its frame is fragile, prone to light interference, and distortion in curved surfaces.

Surface acoustic wave touch screen: It solves various defects of previous touch screens. It is clear and not easy to be damaged. It is suitable for various occasions. However, if there are water droplets and dust on the screen surface, the touch screen will become dull or even stop working.

Classified by installation method:

Plug-in touch screen: The touch detection device of the touch screen system is installed directly in front of the display device. It is easy to install and is very suitable for temporary use.

Built-in touch screen: The touch detection device is installed in the casing of the display device, in front of the picture tube. When manufacturing a display device, the touch detection device is fabricated on the picture tube so that the display device directly has a touch function.

Integrated touch screen: When manufacturing display equipment, the touch detection device is made on the picture tube, so that the display equipment directly has a touch function.

Distinguish from technical principles:

Vector pressure sensing technology touch screen: This technology has withdrawn from the stage of history.

Resistive technology touch screen: The design concept is reasonable, but its image distortion problem is difficult to fundamentally solve.

Capacitive technology touch screen: accurate positioning, but its price is quite high and it is easy to be scratched and damaged.

Infrared technology touch screen: low price, but its frame is fragile, prone to light interference, and distortion in curved surfaces.

Surface acoustic wave technology touch screen: clear and not easily damaged, suitable for various occasions, but if there are water droplets and dust on the screen surface, the touch screen will become dull or even not work.

The above are the main types of touch displays and their differences. In practical applications, the appropriate touch display type needs to be selected according to specific needs and environmental conditions.

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