What is membrane switch/kepad/push-button?

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Membrane Switch

A new type of electronic keypad operating system that integrates key functions, indicator components, and front panels. The membrane switch is composed of six layers: Graphic overlay, upper-adhesive, the upper circuit, the isolation spacer, the lower circuit and the back adhesive. The contact of the upper circuit is downward, and it is in contact with the point of the lower circuit. The circuit contact bounces back after releasing, then the circuit is disconnected and the loop triggers a signal.

The Membrane switch has strict structure, beautiful appearance and good sealing. It has the characteristics of moisture resistance and long service life. It has been widely used in electronic communication, electronic measuring instruments, industrial control, medical equipment, automotive industry, smart toys, household appliances and other more fields.

Working Principle of Membrane switch

The basic working principle of the membrane switch is as follows: when the keys is not pressed, the membrane switch is in the normal open state, and its upper and lower contacts are disconnected, and the isolation layer isolates the upper and lower lines; when the keys is  pressed, the upper contact point of the circuits is deformed downwards, and it merges with the lower circuit to make the circuit conductive.

The connected circuit signals of the external connection instrument (substrate) to achieve its corresponding function; when the finger is released, the upper circuit that touches the lower point will be bounced back, then the circuit is disconnected, and the loop triggers a signal.

Membrane Switch Application Fields

The membrane switch is consists of keys, front panel, text, marking, logo, transparent windows. And the design of the graphic overlay can reflect the integration of product function and original color performance, which is unique. The membrane switches are widely used in intelligent electronic measuring instruments, medical instruments, computer control, CNC machine tools, communication terminal equipment, various industrial and household appliances products (such as copiers, refrigerators, microwave ovens, electric fans, washing machines, electronic game machines, etc.)




Membrane switch processing 




                                                                                                                           Jessie Gao

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Application of Membrane Switch in Lamps and Lanterns

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Tactile Vs. Non Tactile Membrane Switches | What’s the difference?

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👉https://www.jrpanel.com/T👈 C ircuit boards typically rely on membrane switches to turn parts of the device off and on. There are two main membrane switches in use today on printed circuit boards. One is referred to as a tactile membrane switch, and the other is called a non-tactile membrane switch. Each switch performs a different function on the printed circuit board. Here is an overview of the differences between a tactile and a non-tactile membrane switch. Construction A tactile switch is a momentary switch designed to provide a tactile (physical) response when pressed to activate it. There is an overlay on top of the switch that sits above a metal dome inside the switch. The overlay has letters, symbols, and/or designs on it that you use to identify what happens. When a symbol on the overlay is pressed down, it pushes a metal dome down under the symbol, so it presses against a conductive footprint. The conductive footprint then connects to the silver printed circuit, and action ...
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