The performance of the Capacitive Touch Screen CTP has a great impact on electronic technology. At present, more and more customized capacitive touch screens have brought many benefits. Promote the rapid development of the market. But there is one problem that has always been troublesome for people, and that is the design of the touch screen. There are many difficulties and precautions. Today, I will take everyone to learn about it.
A more common resistive touch panel senses a finger or a stylus. The top flexible transparent material will be pressed down. Then contact the conductive material layer below. But the projection type touch screen customization has no movable parts. Some sensor suppliers will make a single-layer sensor. Embedded X and Y axis sensors and small bridge components in a single layer of ITO. Then when a finger or other conductive object approaches the screen. There will be a capacitance between the sensor and the finger.
For the system, this capacitance is quite small. However, a variety of techniques can be used to measure this capacitance. Not only you should consider the appearance of the touch panel. And it’s important to understand its mode of operation. In order to design high-performance capacitive touch screen products. Be sure to pay attention to some parameters. When measuring accuracy, an analog or mechanical finger is used. Place your finger in an accurate position on the panel. Then compare the actual position of the finger with the measured position.
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