Material selection forms the foundation: premium PET substrates offer superior bend resistance compared to standard PC, while high-purity silver paste delivers more stable contact resistance than carbon paste. Regarding structural design, rational keyform and travel design minimise stress concentration, thereby extending service life.
Metal domes are thin elastic components manufactured from materials such as stainless steel grades 301 or 304, beryllium bronze, or phosphor bronze, with thicknesses ranging from 0.05mm to 0.1mm. These components find extensive application in membrane switches, contact switches, printed circuit boards (PCBs), flexible printed circuit (FPC) boards, as well as within medical devices, automotive electronics, and industrial automation equipment.
Membrane switches are selected according to the operating environment and durability requirements, finding widespread application in sectors such as domestic appliances, medical equipment, and industrial machinery.
Have you ever noticed those soft-touch buttons on your microwave's control panel? Or the backlit buttons on your air conditioner's remote control?
One might say that a ruler, being such a commonplace item in daily life, is hardly remarkable. Surely anyone in their right mind should know how to use one. Yet I've discovered that in the manufacturing process of membrane switches, more than just a ruler is required.
LGF light-guiding film/sheet achieves superior light distribution by incorporating an LGF layer onto conventional dual-layer or EMI-structured conductive films. Its operating principle leverages the principles of light reflection and refraction, combined with specialised optical software design, to apply microstructural processing onto the fibre-optic film.
