How to maintain a capacitive touch screen when the temperature is abnormal?

April 17, 2025

Latest company news about How to maintain a capacitive touch screen when the temperature is abnormal?

Recently, I have been receiving inquiries from customers asking, 'Why does my Projected Capacitive touch screen slow down in winter?' Do you also have this problem? When it comes to winter or going to places with low temperatures, your touch screen will slow down or become less sensitive? Today we will solve this temperature puzzle.
 

The core materials of Projected Capacitive touch screen actually have their own 'little temperaments'. Taking the most common capacitive screen as an example, its ITO conductive layer increases in resistance at low temperatures, just like the water flow slows down when a water pipe freezes; At high temperatures, the protective adhesive layer may become soft, just like how acorns under the scorching sun lose their elasticity. Generally speaking, the nominal range of 0 ℃~50 ℃ for commercial grade products refers to the ability to ensure optimal performance within this range, but exceeding this range for a short period of time does not mean immediate damage.
 

We suggest that users take three preventive measures:
1. Avoid drastic temperature changes: Just like a person suddenly catching a cold when walking from a heated room to icy conditions, it is recommended to let the
Projected Capacitive touch screen sit for 30 minutes before using it when the temperature difference exceeds 20 ℃
2. Pay attention to heat dissipation design: Industrial equipment should ensure a ventilation space of at least 5cm around the screen. Our engineers have solved the problem of screen misoperation in the injection molding workshop by installing aluminum alloy heat dissipation backboards
3. Regular calibration and maintenance: It is recommended to perform linear calibration once every quarter, and the frequency can be increased in high-temperature environments

 

There is an interesting case: the Projected Capacitive touch screen of a certain baking factory's production line often malfunctions, and it was later discovered that it was caused by local overheating due to direct blowing of the hot air gun. We have perfectly solved the problem by installing a heat-resistant tempered glass cover and adjusting the installation angle. We are happy to share these small experiences with you.