Medical Membrane Switches & Touchscreens

Medical membrane switches and medical instrument touchscreen technologies have become widespread throughout all types of hospitals and clinics. This highly useful and efficient technology for a bevy of medical applications.

Request a quote on custom membrane switches and touch screen technology for your medical equipment. Contact Dyna-Graphics for more information.

How to Choose a Proper Medical Membrane Switch

Medical membrane switches offer numerous design options that enable manufacturers to develop appropriate interfaces that link the end user to the machine’s functionality. A typical membrane switch assembly contains several layers which all serve a distinct purpose for the entire medical membrane switch, these layers include:

  • Graphic overlay
  • Overlay adhesive
  • Top circuit layer
  • Circuit spacer
  • Lower circuit layer
  • Rear adhesive layer
  • Rigid support layer

Membrane Switch Design Options

Membrane keypad switches allow for the addition of customized features that are honed to your specific medical application. Some of the additional features that we can customize to your exact specifications, include but are not limited to:

  • Embossing
  • Circuit encoding
  • Hard coat finishes
  • Tactile response
  • Filter windows
  • Backlighting
  • Panel interconnections
  • Subpanels
  • Elastomer keypads

Medical Membrane Switch Benefits

Medical device touch pads are well suited for medical electronics, which are limited to a specific or small number of functions, are portable, and require a high degree of visibility. Membrane switches are particularly suitable for handheld medical applications and portable devices because they are lightweight, low profile, durable, easy to clean, and RoHS-compliant. Some of the key attributes associated with membrane keypads, include:


New antimicrobial film technologies are now being used for membrane switch applications to ensure medical grade cleanliness. This antimicrobial technology disrupts the bacterial cell wall killing or inhibiting bacterial growth. The result is that the film surface of membrane switch provides dependable and constant protection against bacterial contamination.


Membrane switches can easily provide protection against electrostatic discharge (ESD). An inner layer of the switch assembly can take such discharges to ground. Our printed shield layers can be tailored to each unique application to provide optimal shielding effects and prevent unwanted intrusion from incoming or outgoing signals. Shielding can generally be accomplished without conceding the performance or quality of the switch.


With a 180° radius warning lights or other functional indicator lights can be viewed from a distance at various angles. Medical membrane switches can also provide product enhancement and differentiation. With an essentially unlimited color palette, the graphic overlay can provide aesthetically pleasing yet highly useful characteristics to the product. Very simple color and artwork modifications provide low-cost model or functional variations even though the lower switch layers remain constant, which can help to keep total program costs down.


As a direct membrane switch manufacturer our membrane keypads can be sealed against various types of surroundings typically encountered in the portable medical device industry. This can be achieved with a full perimeter seal or gasket within which the circuit tail exit is routed.


There are two ways to effectively illuminate a membrane switch, LEDs and electroluminescent panels. LEDs provide an effective way to communicate device status near or at a distance. Electroluminescent lamps are not interchangeable with LEDs, but work well for backlighting in low light situations.

Medical Instrument Touchscreens

Medical instrument touchscreens offer solutions for a variety of issues. They offer simplicity by reducing peripheral devices like a mouse or keyboard and eliminating external components like buttons, switches and dials, which are often bulky and inefficient. Excess components increase the size of the product and the probability of component failure over time. Medical touch screen displays are often integrated into medical devices for ease of use, precision, clear optics, light weight and minimal tooling.

Resistive Medical Device Touch Pads

Resistive medical instrument touchscreens are very thin and are constructed in several different layers material with a small air gap between each layer. The screen can then be manipulated with any sort of pointy object, which makes it ideal for medical instruments that are designed for harsher environments such as an ambulance where the operator is usually wearing gloves. Other applications, include:

  • Portable diagnostic equipment
  • Third world clinic operations
  • Mobile military clinics
  • And more

In addition, Resistive overlays are the lowest cost option and require minimal programing to integrate with a LCD module.

Capacitive Resistive Medical Device Touch Pads

This type of touchscreen panel contains an insulating material like glass, coated with a transparent conducting material such as indium tin oxide (ITO). The human body acts as an electrical conductor, so that when the surface of a finger encounters the surface of the glass, the electrostatic field is interrupted. The panel is then able to locate the position of the contact. This technology allows for movements such as swiping and pinching. This type of technology can reduce infection by eliminating the need for the user to move from patient to keyboard/mouse/touch screen and back to the patient. Possible applications, include:

  • Operating room procedures
  • Reviewing medical images
  • Touchless operating table tasks
  • Outdoor medical necessities
  • And more

Additionally, capacitive touchscreens are more expensive to manufacture than resistive, but the cost difference may be worth the additional cost.

Contact Dyna Graphics Today

Contact us for more information on our medical membrane switches and medical instrument touchscreens, or request a quote today. Perfect for fast-paced environments where every second can count, our medical touch screens and membrane switches are designed for quick, easy, and accurate operation.

ISO, RoHS, REACH, and Conflict Minerals Certified

Dyna-Graphics is an ISO 9001:2015 certified HMI (Human Machine Interface) solutions company. Additionally, all manufactured membrane switches and overlays are RoHS Compliant.
To improve the protection of human health and the environment posed by chemicals, Dyna-Graphics is proud to be REACH compliant and conflict minerals certified. 

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