Advantages and disadvantages of the surface acoustic wave touch technology oled module

Surface acoustic wave: the surface of the medium to pass a high-frequency sound waves, when the sound waves encounter soft material is absorbed, variable calculate the position.256x64 oled
This technique is gradually being used at the touch screen, its accuracy reaction rate than the resistor or capacitor to larger sizes can also be done, but because of the reflector antenna must be placed around the carrier in the conduction dimensional changes must be made, a lot of game and other game machines are beginning to use this technology.
Determination can take a rigid conductive material to be tested, in general, is not induction rigid material.
The technology is a new extension of the development is the use of surface seismic waves (3M patent), slight vibration is generated when the objects touch the touch surface to calculate the position.serial 20x2 lcd