Human Machine Interface Keypads usually will be one part of the box build assembly or turnkey assembly. They usually worked as the operation interface. When we open a machine or start an equipment, we need press the buttons on the control cabinet. LUPHI is just the experienced manufacturer for such kind of interface control products, like the membrane keypads(also called membrane switches), graphic overlays(also called membrane panel), silicone rubber keypads.

In this application, we also can manufacturer the membrane keypads assembled with the rubber keypad, LCD, EL panel, PCB, FPC, plastic, Metal panel etc.

> Our Services and Advantages in this Application
1) Artwork design and making;
2) Has our own finally assembly factory which can assemble the complicated keypads with plastic, metal, PCB, FPC etc.
3) Design improvement suggestion against the customer’s original design;
4) Experienced workers and engineers;
5) ISO certified factory;
6) Imported material, like the Autotype PET, 3M adhesive, Nicomatic connector etc.

> Membrane Keypad Structure

1) 4 layers structure: Graphic overlay + Spacer + Circuit(can be PET circuit or FPC circuit) + Back Adhesive
2) 6 layers structure: Graphic overlay + Spacer: Dome Retainer + Spacer + Circuit(can be PET circuit or FPC circuit) + Back Adhesive;
3) Other Structure
3.1) Overlay + Rubber Adhesive + Rubber Keypad + Rubber Adhesive + Retainer + Spacer + Circuit + Back Adhesive;
3.2) Overlay + Spacer + Retainer + PCB Circuit;
And also there are many other kinds of structures for the interface keypads structure. It based on customer’s real needs and we can design the suitable and economical structure for our customer’s final application.