Membrane Switch

Tiantai Electronics is a leading China membrane switch manufacturer. The membrane switch is composed of six layers: Graphic overlay, overlay spacer, dome retainer, circuit 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.

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Product Description

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

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 metal dome and lower contacts are disconnected, and the circuit spacer layer isolates the metal dome and lower lines; when the keys is pressed, the dome contact point of the circuits is deformed downwards, and it merges with the lower circuit to make the circuit conductive.

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