Comparison of capacitive touch oled modules technology advantages and disadvantages

Capacitive: influence of the variation of the electric field via the conductive substance to calculate the position of the object
This technology 20 years ago on the TV Tuner, was a lot of touch but do not press down the button, such as elevator buttons, the early development of most of the surface of the metal, and now you can use a number of non-conductive material, notebook touchpad are mostly using this technology, the famous iPod is using this technology, but its drawback is that we must through will affect the object of the electric field sensor, and the reaction has been slower There is also likely to be near electromagnetic field the impact and precision error.
The determination generally available hand-held non-conductive material to do the test (conductor such as hand away from the contact surface must be a certain distance) lcd graphic display
There are two common technology (Apple projected capacitive), projected capacitive advantage of using a non-contact sensor, which is separated by glass or suspended induction in the application of surface capacitive (3M MicroTouch) or projected capacitive on the advantage is that the surface will not be long-term use and wear and tear, and can be done and is currently projected capacitive through a special process can not only multi-point (software) should be used with great size (100-inch), Japan 1 / the use of human transmission of different signals, more than multi-point touch (that is, you can tell which people in touch).I2C Lcd Display