The silicone keypad is the central component of many keyboards. It determines the haptics, the overall optic impression and the tactile feeling. The electrical behaviour is also directly influenced by integrated contact elements in the keypad (contact pill / metal dome).
The silicone keypad has an obvious advantage in design flexibility. We can offer our customer individual keypad solutions – diverse shaped and coloured keys combined together in one keyboard. The Force-Travel ratio responsible for tactile behaviour can be easily adapted to meet customer-specific demands for a particular application.
Our keypads are available with a large diversity of coatings, including Epoxy, PU, PET, PC and other chemical-resistant and UV-resistant surfaces, to increase resistance to abrasion. High-end keypads with quality keys can be assembled with metal or plastic caps. The design potential of plastic caps is significantly increased through diverse coatings or chrome-plating.
Backlighting and light guides can be integrated in the keypad or the caps as additional options. Various solutions are offered for electrical contacts – from low-cost carbon pills to superior-quality metal domes with a current capacity of up to 2A. Keypads for the automotive industry are often assembled with plastic caps and metal domes. Integrated metal domes ensure longer life combined with excellent haptics.
Moreover, we can implement almost all designs and keyboard constructions through our extensive supplier-network. You can profit from our comprehensive technical know-how by contacting our Sales and Engineering department.
Silicone keypads with multicolored illumination
Through a new , very precise 2K injection molding process we can offer our customers silicone keypads with multicolored keyboard illumination . The process allows the integration of a light channel in each key . This light conduit is completely isolated from the rest of the transparent key and achieves a precise focusing of light beam. Keypads with this technique can now be not only backlit, the individual keys can also display status indicators . And this is in a different color .
Silicone keypads on PCBs
N & H Technology provides backlit silicone keypads on PCBs as a space-saving , compact assembly .
We also provide high-quality customer-specific switch modules for use in the industrial sector (eg user interfaces of door controls ) . The module (pictured right) consists of a silicone keypad , a printed circuit board and a connecting cable .
The silicone keypad is bonded to the circuit board . The LEDs for backlighting the keypad mounted with associated components in SMD technology to the circuit board. The individual switch and lighting functions are available via a multi-pin connector with pre-assembled cables are available .