Technical specification of Capacitive touch screen

- Jul 19, 2018 -

Accuracy: 99% accuracy. Material: Completely scratch-proof glass material (Morse hardness 7H), not easy to scratch and wear, not susceptible to the impact of common sources of pollution, such as water, fire, radiation, static electricity, dust or oil and so on. 

The eye-protection function of the goggles.  

Sensitivity: Less than two ounces of applied force can be induced, less than 3ms quick response. Sharpness: Three kinds of surface treatment (polish,etch,industrial) to choose from. 

The MTBF of the SMT controller is greater than 572,600 hours (per milhandbook-217-f1). 

Touch life: Any point can withstand more than 50 million times of touch, once corrected cursor does not drift. The capacitive touch technology is a touch-control technique which utilizes the capacitance change produced by the finger near the capacitive touch panel.

Capacitive touch has two important capacitance parameters, one is the inductive capacitance between the finger and the upper sensing material (such as Ito), and the other is the parasitic capacitance between the sensing material (such as the ITO layer) or between the sensing material and the optical panel (e.g. Ito and LCD). The parasitic capacitance is generated between the conductor and the conductor, and the inductive capacitance changes when the finger conductor approaches the sensing conductor of different voltages. The capacitive sensing effect is how to detect 0 under a larger parasitic capacitor value (Pico farad;pf). 1~2 a small inductive capacitance change in the PF unit.

Capacitive touch control technology is more stable and reliable, with the body is a The capacitance characteristics of the capacitive, in contact with the touch panel generated by the change in capacitance to reach the sensing touch effect. Atmel Marketing Director Christopher Ard pointed out that the sensor design can be single-sided Ito graphics, for the lowest functional interface, such as single touch point for large virtual buttons, sliders and other applications, but the more common implementation of the two-tier design (separate x and Y layer), This requires more complex performance and accuracy.