Detecting push button press of a passive rotary knob on a touch screen

A touch screen device, comprising:

• a touch screen panel having a capacitive sense array;
• a passive dial including first, second and third conductive parts, the first conductive part and the third conductive part are in proximity to or in contact with a surface of the touch screen panel, and the second conductive part is conductively coupled to the third conductive part when the passive dial is pressed and is not conductively coupled to the third conductive part when the passive dial is not pressed;
• a first conductive spring disposed on top of the first conductive part;
• a second conductive spring disposed between the second conductive part and the third conductive part;
• and
• a component of a conductive material, one end of the first conductive spring and the second conductive part being in direct contact with the component, and another end of the first conductive spring being in direct contact with the first conductive part;
• wherein
• a position of the first conductive part above the capacitive sense array corresponds to a touch index in the capacitive sense array and a position of the third conductive part above the capacitive sense array corresponds to a button press index in the capacitive sense array;
• the first, second and third conductive parts are movable in conjunction with a rotation of the passive dial;
• wherein
• the passive dial further includes a non-conductive part and a rotating element;
• the non-conductive part is configured to hold and secure the first, second and third conductive parts, and is assembled on top of and in direct contact with the rotating element for rotation with the rotating element;
• and
• the rotating element is bonded to the touch screen panel.