What Is a Near-Field Imaging Touchscreen?

All touchscreens use a touch-based mechanism for input. While some of them support peripherals, they can all be controlled by tapping the display interface. There are different types of touchscreens, however, some of which use different technologies to register and respond to touch commands. Even if you're familiar with resistive and capacitive touchscreens, you might be unfamiliar with near-field imaging touchscreens. What are near-field imaging touchscreens exactly?

Overview of Near-Field Imaging Touchscreens

A near-field imaging touchscreen is a type of touchscreen that identifies touch commands by measuring an electrostatic field. They are similar to capacitive touchscreens. As you may know, capacitive touchscreens use capacitance to identify touch commands. If you tap your finger on a capacitive touchscreen's display interface, you'll add a small electrical charge to it. The capacitive touchscreen will then notice this change of capacitance, and it will respond will the appropriate action.

Near-field imaging touchscreens work in the same way as capacitive touchscreens by looking for changes in an electrostatic field. With that said, near-field imaging touchscreens use a different configuration than their capacitive counterparts. In a near-field imaging touchscreen, an electrostatic charge is applied to the corners. This creates a uniform electrostatic field across the display interface. If you tap the display interface, your finger will change the electrostatic field, which the near-field imaging touchscreen will identify as a touch command.

Advantages of Near-Field Imaging Touchscreens

Near-field imaging touchscreens offer many of the same benefits as capacitive touchscreens. Since they identify touch commands by measuring electricity, they last longer than many other types of touchscreens. You can perform tens of thousands or even hundreds of thousands of touch commands on a near-field imaging touchscreen without worrying about its components failing.

Another benefit of near-field imaging touchscreens is responsiveness. They are able to respond to touch commands more quickly than resistive touchscreens.