The latest manufacturing techniques have allowed the membrane Keyboard to develop in to a technically advanced user interface. Features and components can be integrated giving a unique structure to a keyboard’s design, ensuring that your electronic product stands out against the competition.
How are Membrane Keyboards constructed?
Membrane keyboard assemblies are made by printing coloured and conductive inks onto Polyester or Poly carbonate films. The top layer creates the graphical design whilst the lower layers contain the printed circuitry layers. A membrane switch operates when electrical contact is made by pressing the finger onto the switch contact area and broken when the finger is released. With the addition of metal domes within the structure it is possible to add a specific tactile response for each key.
What features can be added to a Membrane Keyboard?
Membrane Keypads from Diamond HMI can include a range of additional design features to help customers meet their exact requirements.
Polyester and Poly-carbonate with structured or gloss finish
Chemical resistant materials for extreme or harsh conditions
Anti-microbial & UV resistant materials
IP rating up to IP67 – subject to certain design parameters
Tactile or non-tactile keys with Metal dome or Poly domes
Rim, Pillow, Braille or Dome embossing
integrated SMT LEDs.
RFI/ESD/EMC shielding layers
LED or Electro Luminescent Back-lighting
Interchangeable legends and inserts
Integrated Flexible Printed Circuits (FPC’s) or PCB back panels
Steel/Aluminium back panels with mountings
UL Approved materials.
If you would like to see samples of our keypads which utilise any of the above features please contact our Product Management team on 01477 505206.
Further information on designing membrane Keyboards can be found in our Membrane Keyboard Design Guide.