Customized Membrane Switch Products to Match Customers’Diversified Needs！

When operator press the poly dome key, the silver print under the dome connects with circuit on opposite layer, thereby closing the circuit. The click hand feeling indicates the correct operation. The function of poly dome is similar as metal dome.

Capacitive touch switch combined normal panel and capacitive sensor together.Unlike traditional push-button switches, capacitive switches don’t need press.Only put finger on the button in the sensing area, can be recognized by the machine through the film sensor operation.Most of the buttons are made by acrylic panels or injection parts with backlight display function which has a good appearance .Capacitive keypad has a fashionable appearance and long service life, so it has great advantages in many applications such as smart home appliances, cars, mobile phone communication, medical instruments and toys.

The most common membrane keypad circuit is a silver paste circuit printed on PET.The cost of silver printing circuit is much lower than that of copper FPC circuit.

For products with many buttons or many LEDs/resistances, the circuit drawing cannot be completed on one side circuit layer, so double-sided or multi-sided PCB will be selected as the circuit material. In this way, the keypad products are more flexible in circuit design . Some special components which cannot be welded on flexible circuits , can be welded on the PCB well. In the application of capacitive touch switch products, the capacitor sensors can be directly made on the PCB welding pads, and the backlight film can also be directly mounted on the PCB board.

Copper FPC circuit material, with the same flexible characteristics as silver paste printed circuit, the main circuit and lead are an integral material, easy to assemble into the product.
Copper FPC circuit material has better conductivity and oxidation resistance than silver paste printed circuit. In addition, copper FPC is better than silver paste printed circuit in welding of electronic components.
But in terms of price, copper FPC circuit will be more expensive than silver printed circuit, and also the MOQ will be bit more.

Waterproof membrane keypad can prevent water or moisture from seeping into the product through the lead gap of the film switch edge crack in a humid environment. Waterproof membrane switch（keypad） is suitable for outdoor or high humidity environment. The waterproof function of membrane switch（keypad） is realized by using waterproof material and waterproof sealing ring structure design.

Due to its special metal material, the metal keyboard has a solid appearance, can achieve the anti-riot, dustproof, waterproof functions that the ordinary keyboard does not have, so it is used in the input equipment with special requirements for the environment. As an embedded device, metal keyboard is widely used in the field of financial equipment, communication equipment, military equipment and a series of self-service terminal equipment.