CIPEM offers a wide range of high-performance Custom Membrane Switch Keypads.
The Membrane Switch keypads are made in different Plastic Film material and double side adhesive with graphic printing and printed electronic circuit.
What's a membrane switch?
A membrane switch, also called a membrane keyboard or membrane keypad, is a switching device comprised of a series
of flexible layers of polymer films and adhesives.
The upper layer of a membrane switch panel is typically called a graphic overlay, and is produced by printing on the second surface of clear polyester or polycarbonate film. The circuitry is created by screen printing conductive silver ink.
Tactile devices can easily be incorporated into the membrane switch to provide feedback to the operator that the switch has been activated. Other electronic components can be implemented, as well, such as discrete LEDs, backlighting sources, and connectors that make membrane switches easy to integrate into other systems or devices.
Membrane switch structure
- 1 - Overlay
- 2 - Adhesive spacer
- 3 - Top circuit layer
- 4 - Circuit spacer
- 5 - Lower circuit layer
- 6 - Adhesive layer
- 7 - Back adhesive layer
Frequently used materials
Mainly PC (Polycarbonate) on different thickness (150, 180, 200, 250μm).
Can also be polyester (PET).
Depending on the customer's needs:
- Scratch resistance.
- UV resistant.
- Gloss finish.
- Antiglare finish.
- Outdoor use.
- Silk screen printing.
- Digital printing.
- Double sided tape adhesive enables to assemble the different layer of the membrane.
- Thickness between 0.05 and 1.15mm.
- Used to fix material domes position in the membrane.
- Thickness between 0.05 and 0.175mm.
- 2 Possible materials: PET or FPC.
- If PET,circuit is silk creen printed with silver paste.
- Common circuit thickness: 0.125mm.
The following table is a brief summary of CIPEM membrane switch capabilities
Tactile or nontactile number of switches circuit type
Size & Lengh
Number of through holes cut-outs from 20mm - 2 000mm
(from tail edges for the tracks)
Male & female connector
Number of colors
Background and display windows
Colors & types
7 000k pieces/month
(average size of keypads)
Membrane switches hove some benefits
The film and the adhesives used proide excellent resistance to the moisture without requiring individual seals around each key on the membrane keypad
Easy to clean/sanitize
Membrane switch panels are relatively flat marking them easier to sanitize. Important factor for the medical field and its applications.
Provides a very inexpensive unit price, but also very affordable tooling costs.
Tooling costs being low, customization is easy. Shape, color, dimension and feel can be tailored to user requirements.
Can integrate complex designs and can include almost all graphic options ( different logos, designs...).
Nuclear imaging equipment
Hospital bed controls