Membrane switches, which are also
referred to as Membrane Keyboards or Membrane keypads, are made by printing
colored and conductive inks onto Polyester or Polycarbonate 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.
It is an electrical control for turning
a circuit on and off.Membrane switches
are more cost-effective and take up less design space than mechanical switches
or buttons because of their low profile. Membrane switches are easy to clean
which makes them ideal for Medical or industrial controls.
Some common
options :
Graphic Overlay:
·Complete custom graphic design and development
·Wide range of graphic layer material options such as: polyester,
polycarbonate, silicone
·LCD or LCD window options
Circuits:
·Silver, carbon, dielectrics on polyester
·FPC
·Rigid PCBA
Shielding:
·ESD, EMI or RFI shielding
Backlighting:
·LED
·Light guide film
Switching:
·Tactile metal domes (wide range of sizes and actuation
forces available)
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