Membrane Switch

Membrane switches are versatile and economical switch alternatives. The simple, low profile construction is easily designed into a user interface. Tooling costs are low since the entire construction is fabricated with steel rule dies.

Different custom graphics can be used with a single circuit design, or a relegendable overlay can be used, further lowering the overall cost of design and manufacture. The addition of a metal or polyester dome combines these features with the advantage of tactile feedback.

GM Nameplate has extensive custom manufacturing and fabrication capabilities to deliver membrane switches for your product or appliance. Review GM Nameplate typical membrane switch specifications.

FACTS ADVANTAGES DISADVANTAGES

A membrane switch is a micro motion, momentary contact, flexible logic level circuit, normally screen printed on thin (generally 0.005” inch) polyesters using silver conductive (can be carbon) inks, with or without metal domes to provide tactile response, with a screen printed graphic overlay.

Construction includes graphic overlay, top spacer, optional dome/top membrane layer, bottom spacer, bottom membrane and an optional subpanel. Shielding may be incorporated.

Backlighting options include conventional light sources, electroluminescent or fiber-optic.

Typical Membrane Specifications

Tactile response

Sealed

Easy to clean

Chemical and abrasion resistant

Low profile

Low cost (depending on # of switches)

Medium to long life (depending on type of dome used)

Simple field replacement and on-site servicing

Limited backlighting options

Design Options

  • Embossed overlay
  • Display windows
  • Hardcoats for durability
  • Backlighting
  • Multiple overlay versions, single switch design
  • Relegendable overlay
  • Rigid subpanel
  • ESD/EMI shielding
  • Rigid bottom circuit (PCB) which doubles as subpanel