Custom Keyboards and Input Devices - INDUKEY - #5

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52 1 2 3 4 5 Flexible Membrane Keyboards Technologies www.custom.indukey.com InduKey® Keyboard Production GmbH & Co. KG The technology at a glance Membrane keyboards consist of several foil layers which are bonded with each other. Polyester foils printed with conductive silver paste are used as switch membranes. The top and bottom switch membranes are spaced from each other by means of a spacer foil. The contact closes when the upper design foil is pressed in the area where the key is located. The design foil is placed on the upper switch membrane. This design foil is highly transparent and has a fine-textured or smooth surface. This foil can be printed with various colours and informatory contents. As the keys are separated by means of rim, dome or key embossing, they provide a good tactile feedback and finger guiding. Application fields • Consumer products of any kind • Mass products in all industries • Computer games and electronic toys • Electronic balances and home devices • Mobile data collection terminals • Medical and analysis equipment Important technological advantages • Easy to clean with customary cleaning agents • Flat design suitable for industrial applications • Resistant against dust and humidity • Customized controllers available • Individual layouts and colour schemes • Terminal lugs for zero insertion force connectors or crimped connectors • Polyester foil is resistant against many chemicals • Excellent tactile feel due to embossing • Metal domes can be integrated • Good key separation due to rim, dome or surface embossing Layer construction of a flexible membrane keyboard 1 PCB track foil with integrated switching elements (switching foil) 2 Spacer foil 3 Retaining/ protective foil (optional) 4 Adhesive foil for design foil 5 Design foil i