What is an integrated capacitive touch screen? With the improvement of integrated production technology, the cost of customizing integrated capacitive touch screens is gradually decreasing. Especially for molds and mid to high end equipment that require more appearance, integrated panels are a better choice. More and more users are choosing the integrated display screen and customized TP approach.
Capacitive touch screen technology utilizes the human body's current induction for operation.
A capacitive touch screen is a four layer composite glass screen. The inner surface and interlayer of the glass screen are coated with a layer of ITO, and the outermost layer is a thin layer of silica glass protective layer. The interlayer ITO coating serves as the working surface, and four electrodes are led out at the four corners. The inner ITO layer is a shielding layer to ensure a good working environment.
When a finger touches the metal layer of a capacitive touch screen, a coupling capacitance is formed between the user and the touch screen surface due to the human electric field. For high-frequency currents, capacitors are direct conductors, so fingers suck away a very small current from the contact point. This current flows out from the electrodes on the four corners of the touch screen, and the current flowing through these four electrodes is proportional to the distance from the finger to the corners. The controller calculates the position of the touch point by accurately calculating the ratio of these four currents.
The integrated capacitive touch screen is mainly composed of a cover plate and an integrated touch function chip. The integrated touch function sheet includes a cover insulation printing layer, a virtual button printing layer, a functional graphic printing layer, an infrared distance sensing hole printing layer, and a silver paste circuit printing layer stacked together in sequence. The insulation printing layer of the cover plate is a black ink screen printing layer, the virtual button printing layer is a cold gray ink screen printing layer, the functional graphic printing layer is an etched printing layer, the infrared distance sensing hole printing layer is a semi transparent screen printing layer, and the silver paste circuit printing layer is a dry etching printing layer.
2、 Application and customization of integrated capacitive touch screen
Compared with standard sized capacitive touch screens, integrated capacitive touch screens have better appearance and touch experience. With the improvement of capacitive touch screen technology, the application scope of integrated capacitive touch screens has extended from household consumption to industrial control, medical and other fields, and its popularity is increasing.
The demand for integrated capacitive touch screens in the market is increasing, and more and more users are choosing to customize integrated capacitive touch screens. Especially for molds and mid to high end equipment that have higher requirements for appearance, integrated panels are a better choice.
Tianxianwei provides users with one-stop services, from planning and design, drawing confirmation to sample molding, sample testing, mass production, etc., which can meet the customized needs of different users.
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