Resistive touchscreen technology

Views: 203     Author: Reshine Display     Publish Time: 2023-08-03      Origin: Site

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Resistive touchscreen technology

Operation and description

Metallic layers are classified into two types. The first type is called matrix, and it consists of striped electrodes on glass or plastic substrates facing each other. The second type is analog, which consists of transparent electrodes facing each other with no patterning. Analog offered lower production costs as of 2011. When the two sheets make contact with the surface of the touchscreen, they are pressed together. There are horizontal and vertical lines on these two sheets that, when pushed together, register the precise location of the touch. Resistive touchscreens are a type of "passive" technology because they detect input from nearly any object (finger, stylus/pen, palm).


A uniform, unidirectional voltage gradient is applied to the first sheet, for example, during the operation of a four-wire touchscreen. When the two sheets are pressed together, the second sheet, along with the first, measures the voltage as distance, providing the X coordinate. After obtaining this contact coordinate, the voltage gradient is applied to the second sheet to determine the Y coordinate. If the screen has been properly calibrated for variations in resistivity, these operations occur in a few milliseconds, registering the exact touch location as contact is made.


Resistive touchscreens are typically high resolution (4096 x 4096 or higher), allowing for precise touch control. Contact can be made with a finger or any other pointing device because the touchscreen responds to pressure on its surface.


Compared to other touchscreen technologies

Resistive touchscreen technology is compatible with almost any stylus-like object and can be used with gloved or bare fingers. In some cases, this is preferable to a capacitive touchscreen, which requires a capacitive pointer, such as a bare finger (though some capacitive sensors can detect gloves and some gloves are compatible with all capacitive screens). A resistive touchscreen with a stylus will typically provide more pointing precision than a capacitive touchscreen with a finger. When compared to active touchscreen technologies, costs are lower, but they are more prone to damage. Multi-touch input can be added to resistive touchscreen technology. Multiple touch inputs are registered by single-touch screens due to their balanced location and pressure levels.


Alternative touchscreen technologies are available for people who must grip the active portion of the screen or place their entire hand on the screen, such as an active touchscreen in which only the stylus creates input and skin touches are rejected. Newer touchscreen technologies, on the other hand, enable the use of multi-touch without the aforementioned vectoring issues.


Where conditions permit bare-finger operation, the resistive screen's poorer responsiveness to light touches has led to its use with low-resolution screens and the loss of market share to capacitive screens in the twenty-first century. In terms of revenue and units, projected capacitive touchscreen technology surpassed resistive touchscreen technology in 2010.

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