The use of touch control in electronic products has become a mainstream trend in the market. With the continuous and rapid development of industrial technology, the electronic information industry has become the mainstream of society, and the network communication technology has been continuously improved, followed by the emergence and development of portable electronic products. At the beginning, electronic products were mainly mobile phones, and science and technology changed people’s life and working methods, followed by a series of diversified electronic products, such as MP3, MP4 and tablet computers. Among all kinds of touch technology, projected capacitive touch screen is most popular.
Let’s talk about the capacitive touch screen work principle.
Capacitive touch screen technology uses the current induction of the human body to work. The capacitive touch screen is a four-layer composite glass screen. The inner surface and inter layer of the glass screen are each coated with a layer of ITO. The outermost layer is a thin layer of silica glass protective layer. The inter layer ITO coating is used as the working surface. Four electrodes, the inner ITO is the shielding layer to ensure a good working environment. When a finger touches the metal layer, due to the electric field of the human body, a coupling capacitance is formed between the user and the surface of the touch screen. For high-frequency currents, the capacitance is a direct conductor, so the finger absorbs a small current from the contact point. This current flows out of the electrodes on the four corners of the touch screen respectively, and the current flowing through these four electrodes is proportional to the distance from the finger to the four corners. The controller obtains the position of the touch point through accurate calculation of the four current ratios.
Capacitive touch screen is one of our main products. And we can accept customization for below.
1). SIZE, any sizes between 7”-65” support customization
2). COLOR,cover glass color can be any Pantone colors
3). SHAPE, cover glass can be any shape.
CJtouch capacitive touch screen will be a good touch solution for your kiosks.
Post time: Apr-15-2023