In the wake of the increasing demands of touch applications, the scope for advancement has also soared high. The technology has made some significant transformations to make the features of standard touch sensors more practical to use. One such advanced technology getting popular in the touchscreen industry is the 2-touch resistive controller, developed by A D Metro – a market leader in manufacturing and supply of innovative touchscreens.
This 2-touch resistive controller that works with 5-wire resistive touchscreens is a substantial innovation that overcomes the limitation of single-touch operations in standard resistive applications. This advanced touchscreen controller is helpful in elevating the features of applications that require resistive touch sensors with two-touch capability.
First, take a look at how 5-wire resistive touchscreens are designed.
The two-touch feature has nothing to do about the basic construction of 5-wire resistive touchscreens. The touchscreen panel is constructed typically as a two-layer design with conductive coatings on both the top and bottom layers. The layers are separated by tiny spacer dots that are invisible to the naked eye.
There are electrodes placed at the four corners of the bottom conductive layer and connected to the flexible circuit tail of the sensor. The top layer is connected with only one wire used as a voltage probe for the sensor.
The controller sends voltage alternately in horizontal and vertical directions across the conductive bottom layer through the electrodes. The top layer, when pressed by touch, relays voltage to the controller in alternating X and Y planes.
When there’s a demand for multi-touch applications with resistive touchscreens, the basic controller is replaced with a 2-touch resistive touchscreen controller.
How 2-Touch Resistive Controllers Are Designed?
The board dimension in a 2-touch resistive controller is similar to those of standard single-touch resistive controllers. Furthermore, the connectors used in it are compatible with the existing range of single-touch resistive controllers, allowing for a smooth and easy transition to A D Metro’s new 2-touch controller. This technology easily supports quick and smooth touch operations, with 100 touch points per second for single touch and 70 touch points per second for multi-touch.
A D Metro’s 2-touch resistive touchscreen controller with standard 5-wire resistive sensors becomes a brilliant solution for Graphical User Interfaces (GUIs) of a wide range of applications facing environments where only resistive touch sensors can survive and require multi-touch features.
This advanced 2-touch resistive controller adds several transforming and reliable capabilities to extensively used 5-wire resistive technology. Besides the normal performance and capabilities, 5-wire resistive touchscreens when combined with 2-touch resistive controllers are enabled with:
- Complete two-touch operation with operational gestures like pinch, zoom, rotate and drag.
- Easy integration through HID Plug & Play in Windows.
- Negligible RF Emissions
- Fast, smooth, and responsive touch operations