Touchscreens have become increasingly popular in recent years. You can now find them integrated into smartphones, tablets, laptops, smart appliances, human machine interfaces (HMIs) and many other devices. Touchscreens, of course, are interfaces that support touch commands. Rather than using a mechanical peripheral like a keyboard or mouse, you can control these devices by tapping the interface.

What Is Response Time?

Response time is the length of time it takes a touchscreen to respond to your touch commands. Contrary to common belief, touchscreens don’t respond instantly to touch commands. It may seem instantaneous, but there’s a slight delay from the time when you perform a touch command to when the touchscreen actually responds to your touch command. This is the response time.

The Importance of a Fast Response Time

A fast or “low” response time is important for several reasons. When you perform a touch command, you probably expect the touchscreen to quickly respond. A slow response time means the touchscreen will take a while to respond. A fast response time, on the other hand, means the touchscreen will quickly respond.

Touchscreens with a fast response time are easier to control than those with a slow response time. As you move your finger across the display interface, the touchscreen will respond in the blink of an eye. You can tap icons, zoom into pages and perform other tasks easily if the touchscreen has a fast response time.

What Affects Response Time?

You might be wondering what facts affect the response time of a touchscreen. The touch controller plays an important role in response time. All touchscreens have a touch controller. It’s the part of a touchscreen that detects touch commands. Some touchscreens are equipped with higher quality touch controllers than others. They can quickly detect touch commands, and they can quickly respond to those commands.

Some touchscreen technologies offer faster response times than others. Capacitive touchscreens — specifically projected capacitive touchscreens — are known for having fast response times. Capacitive touchscreens are powered by capacitive touchscreen technology. They generate a uniform electrostatic field, which they measure for changes in capacitance. Any change of capacitance indicates a touch command, in which case the capacitive touchscreen will respond.

As long as you choose the right touchscreen, you shouldn’t notice the response time. High-quality touchscreens respond almost instantly to touch commands. There’s always some type of delay, but you won’t be able to notice it. The touchscreen will quickly respond to your touch commands.