The advent of the era of electronic products has promoted the development of various resistive screens. So what is a capacitive touch screen? Next, the editor will learn from the following two aspects. The capacitive touch screen is a transparent special metal conductive material attached to the surface of the glass. When the finger touches the metal layer, the electric shock capacitance will change. , Let the frequency of the oscillator connected between them change, and the touch position can be determined to obtain information by measuring the frequency change.

Let's take a look at what are the precautions for capacitive touch screens? The scanning speed is defined as the speed at which the touch screen controller scans the touch screen. According to the characteristics of the touch key, a key press will exceed 20mS. Then, as long as you scan once within 20mS, you will be able to scan the touch. During the touch, the fingers will sweat. When a device with a resistive screen enters a warmer place from a colder place, a layer of water mist appears on the surface of the touch screen. It is required that the touch screen can be used normally in both cases.

For devices using resistive screens, the working environment is very different, and the suitable temperature range must be wide, otherwise it may cause the user to remain unchanged. The general working temperature range of resistance screen is -20℃-70℃. The resistive screen will age during use. The performance of the aging touch screen will decrease. The resistive screen system must be able to correct the general aging so that it can be used normally and prolong the life of the system.