Metal Dome Keypad
Metal Dome Keypad, also known as Conductive Metal Pill Keypad, silicone keypad with metal pills. Metal pills are used to support extremely low contact resistance requirement for silicone keypad applied to electrical appliances and medical/health care products.
Metal Dome Keypad Advantage & Disadvantage
Advantage: Lower resistance, Common keyboard's Conductive Ways,
Disadvantage: Bad Tactile Feel, High cost, Without Dust Free Functions
Metal Dome Keypad Design & Structure
1. Silicone Button & Key
2. Silicone Button Pad
3. Button & Key's Web
4. Button Travel
5. Carbon Pills & Graphite Pads ( Conductive Methods)
Metal Dome Keypad Surface Treatment
1. Matte Smooth Coating
2. PU Coating
3. Epoxy Coating
4. Silicone Key with plastic button cap
5. Silicone Key with Metal button cap
The protective cover depends on the environment where the key would be used.PU coating is more wearproof, and protective effects is more better than matte smooth coating. However, PU coating is more expensive, and matte smooth coating have good touch feeling.
Conductive Keypad Materials
Metal Dome Keypad Designers or Manufacturer Notes:
Backlight Keypad Designers or Manufacturers, should not only consider actuation force and silicone rubber keypads structure such as silicone buttons travels, keypad conductive materials, silicone rubber buttons webbing, but also should consider silicone surface & materials demands, such as symbols & icons, protective keyboard cover, silicone keypads materials choice & transparency, hardness, color spraying coating.