An additional convex point with a height of 0.1~0.35mm and a diameter of 1.0mm~3.0mm is added to the Myalr of the single-layer or double-layer conductive film to meet the specific structural combination and improve the feel of the bullet. The finished product of conductive film with 4mm or 5mm round or elliptical bullet with convex points has a total height of 0.35~0.50mm.
Metal Dome Array is an instantaneous switch contact that functions as a normally open switch when used with printed circuit boards, flexible circuits, or thin films. They are mounted on printed circuit boards by applying a transparent film.
In the static state, the tactile metal springs are positioned outside the main pad contacts. When briefly pressed, they make contact with the secondary path, thereby closing the circuit. A variety of shapes and force levels are available to suit your specific application. They can be used as mechanical switches, electrical contacts, or tactile switches.
Advantages of UV Bump Structure Metal Dome Sheets
Enhanced stability and superior tactile feedback
When paired with UV guide columns or UV raised dots, pressure is transmitted with precision, eliminating the inconsistent tactile response common in traditional buttons caused by shrinkage or misalignment of small columns.
The hardness and height of UV raised dots are controllable, allowing adjustment to deliver either crisp or soft feedback to meet the tactile requirements of different devices (such as remote controls or mobile phones).
Enhanced structural stability and durability
The UV encapsulation layer provides elevation and fixation, preventing isolated protrusion of UV domes. This improves the tight bonding between the dome and panel, reducing loosening over prolonged use.
Certain UV processes enhance the dome surface's resistance to abrasion and corrosion, extending key lifespan. This proves particularly suitable for high-frequency pressing scenarios (e.g., instrument control panels).
Enhanced Adaptability and Functionality
The ultra-thin design accommodates structural requirements of waterproof and slim electronic devices (e.g., waterproof keyboards), delivering stable key functionality within constrained spaces.
Certain UV dome switches incorporate noise reduction and shock absorption features, minimising actuation sounds for applications demanding high silence levels.
Metal Dome Array is mainly sorted by
A. (Transparent): Facilitates positioning and alignment
B. (White): Typically employed for light-guiding films, possessing reflective properties
C. (Yellow): High-temperature resistant material, suitable for short-term SMT processes
D. (Silver-printed): Grounding for electrostatic discharge protection
E. (Black): Commonly used for light shielding
UV Bump Structure Metal Dome Array Applications
Remote control devices: Television remote controls, air conditioning remote controls, projector remote controls. UV raised dots can be adjusted to deliver a crisp tactile response, whilst the UV coating resists oil stains, making them suitable for frequent household use.
Small digital devices: MP3 players, handheld gaming consoles, voice recorders, etc. Small-sized buttons require precise travel control, and the controllable dimensions of UV-processed raised dots perfectly meet this requirement.
Kitchen Appliances: Control panels for microwaves, ovens, and soy milk makers. The UV coating resists grease and withstands high temperatures, preventing button failure after prolonged use.
Bathroom Appliances: Control panels for smart toilets and buttons for bathroom heaters. The UV edge sealing layer enhances structural sealing, meeting waterproofing requirements for humid environments.
Smart Control Centres: Home automation panels (lighting and curtain control) feature ultra-thin designs for flush wall mounting. The UV process delivers quiet operation ideal for indoor environments.
Industrial instruments: Multimeters, oscilloscopes, and control panels for automated equipment. Under frequent pressing (hundreds of thousands of times), the integrity of UV-sealed edges prevents key loosening, ensuring accurate data input.
Medical devices: Blood glucose monitors, infusion pumps, and patient monitors. Keys require alcohol-wipe resistance (corrosion-proof) and silent operation. UV coatings withstand chemical corrosion, while integrated noise-reduction features in certain products suit clinical environments.
Commercial Equipment: Numeric keypads on POS terminals and ATMs. UV raised dots enhance tactile feedback, while abrasion-resistant coatings withstand hundreds of daily presses.
In-Vehicle Controls: Automotive infotainment and climate control buttons. UV-cured structures resist vibration, preventing key misalignment during driving. UV adhesives maintain dimensional stability under high temperatures.
