Capacitive touch screens are classified into "SurfaceCapacitive Technology" and "Projected Capacitive Technology".
The “surface capacitive touch screen” uses only a single layer of ITO, and the electrodes are plated on the four sides of the touch screen to form a low voltage alternating electric field in the conductor. Compared with the resistive type, the biggest feature of the capacitive type is that it does not need to be pressed, and only needs to be touched to input an instruction.
As for the "projected capacitive touch screen", it can penetrate a thicker overlay without the need for correction. The projected capacitance allows for the iPhone's signature "multi-touch" operation.
Advantages: only touch, no pressure is required to generate the signal; only one or no correction is required after production; the life will be longer because the components in the capacitive touch screen do not require any movement.
Disadvantages: The cost is relatively high, but with the current mainstream smartphones choosing a capacitive screen, the scale is exploding and the cost is decreasing.
