Metal is a highly conductive material. If the active touch area is too close to a metal bezel or housing without sufficient clearance, the parasitic capacitance from the metal will disrupt the screen's electric field, causing ghost touches or a frozen touch controller.

• Design Recommendation: Always maintain a vertical and horizontal clearance of at least 1.0mm to 2.0mm between the active touch area (AA) and any metal frame, using non-conductive foam tape or spacers.