What is COMBIKEY Technology?
COMBIKEY keypads are a combination of membrane keyboard and silicone rubber keypad technology.
The silicone rubber top layer is compression moulded in the same way as a standard rubber keypad. However, in COMBIKEY technology, the use of webbing to create a tactile response does not occur. Instead, the rubber layer is attached to a membrane circuit, or PCB layer containing metal domes or poly domes. Similar to that used on a membrane keyboard.
Metal domes are carefully selected to suit a product’s intended market. For example, heavy industrial products require larger keys with strong tactile response. Handheld instruments need smaller keys with a softer response.
Use of a separate circuit layer allows easy integration of LEDs for backlighting of individual keys. The LED’s can be controlled independently to the switches to create unique backlighting effects. Once assembled the COMBIKEY keypad has an outer case adhesive layer attached which forms a sealing rating of up to IP67.
COMBIKEY keypads enhance the user’s product experience, with a 3D design that gives engineers more opportunity to integrate a keypad area into a product’s overall design.