At present, capacitive touch screen is widely used in touch display screens in the market. Why is capacitive touch screen so popular?
The capacitive touch screen is affixed with a transparent special metal conductive material on the surface of the glass. When the finger touches the metal layer, the contact capacitance changes, which changes the frequency of the oscillator connected to it. The touch position can be determined by measuring the frequency change.It USES the human electric field to conduct electricity, thus forming an electric current. This current flows out of the electrode at the four corners of the touch screen to form four currents, and the controller can get the position of touch point by calculating precisely the ratio of these four currents.The capacitance screen can realize multi-touch control by adding the electrode of mutual capacitance. In simple terms, it means to divide the screen into blocks and set a group of mutual capacitance modules in each area to work independently. Therefore, the capacitive screen can independently detect the touch control in each area and realize multi-touch control after processing.Can achieve 99% accuracy, with response speed of less than 3ms.
As a result, capacitive touch technology is becoming more and more popular among consumers and manufacturers due to its characteristics of novelty, high reliability, durability and flexibility. For example, the capacitive touch screen launched by xinlilai optoelectronics technology co., ltd. covers 3.5-64 inch capacitive screen.Covering a wide range of application scenarios from basic to high-end, the technology is increasingly being used in consumer electronics, healthcare, industrial automation and computer peripherals.