TOUCH SCREEN AND ITS SHIELDING BRACKET

摘要

PURPOSE: To provide a bracket shielding a capacitive touch screen from external noise caused by stray capacitance. CONSTITUTION: The bracket 40 includes complementary rectangular metal-made electric conduction shield elements having a transparent touch screen 44 inbetween arranged upper and lower inside a housing 42. A large central opening is provided to the upper shield element to allow a user to access the touch screen 44. A large center opening to allow the user to view a display device such as an LCD through the transparent touch screen 44 is provided to the lower side shield element. The display device is fixed to the lower shield element with an insulation material between the display device and the lower side shield element. The shield bracket 40 completely shields the upper face, lower face and ridge faces of the touch screen 44 so as to prevent a capacitance of a hand placed on the housing 42 from giving interference onto the touch screen 44.