Abstract
We developed a layered 3D touch screen using mutual capacitance measurement to detect an object both before and after contact for operation of a 3D image on the display. The 3D touch screen can detect indentations and the precise position of an object and can identify the material in contact. In addition, it can detect the object and its position during non-contact (proximity range). In this paper, the proposed 3D touch screen is measured the precise X-Y position of the object at proximity range. In addition, the 3D touch screen is detected the distance between the 3D touch screen and object. The 3D touch screen may be used as functional and useful interface.
