LED membrane switches are a type of switch designed using thin-film technology, typically employed in panel control systems. Not only do they possess an aesthetically pleasing appearance, but they also integrate multiple functions, enabling the execution of various complex operations. The primary advantages of this switch lie in its ultra-thin design and excellent tactile feedback, providing users with a light and pleasant experience during operation.
LED lights of varying colours and brightness levels can be incorporated according to client specifications, with options typically including red, yellow, green, blue, and white LEDs. Single-colour, dual-colour, and tri-colour LED configurations are available.
Advantages of Membrane Switches
1. Employing multi-layer flexible substrate (PET/PC) stacking technology, the overall thickness is ≤0.8mm, enabling seamless integration into curved smart home device casings for concealed control.
2. Integrating backlighting layers (LED/EL cold cathode film) with touch circuits reduces the space required for separate modules in traditional switches.
1. Supports full-colour screen printing (Pantone coverage ≥95%) for seamless visual alignment with smart home products.
2. Dynamic translucency achieved via optical-grade inks remains invisible when inactive, displaying functional indicators upon activation.
Sealed Protection: IP69K waterproof and dustproof rating (steam jet protection).
Temperature Adaptability: Operating range -40°C to +150°C (compatible with high-temperature equipment such as ovens and underfloor heating).
Chemical Resistance: Withstands wiping with corrosive cleaning agents including 84 disinfectant and alcohol (surface hardness ≥3H).
LED-backlit membrane switches integrate light-guiding film technology with membrane switch functionality, offering the following characteristics:
Uniform backlighting design: LED light sources are evenly diffused through the microstructures (dot patterns or prisms) of the light-guiding film, eliminating localised bright spots and enhancing visibility across the keypad area.
Slim, lightweight and flexible: Typically less than 1mm thick, suitable for compact installations while offering excellent bendability.
High Durability:
Keypad lifespan exceeds one million presses, with optional dustproof and waterproof ratings (IP protection levels).
Low Power Consumption:
Energy-efficient LED backlighting ideal for battery-powered devices.
Customisable:
Supports diverse colour, brightness, and pattern designs to suit varied application requirements.
LED Solution: Directly embed surface-mount LEDs into the switch circuit layer. Advantages include high brightness, extended lifespan, rich colour options, and support for zoned illumination. Disadvantages may include localised light spots, necessitating the use of a light guide film.
LGF (Light Guide Film) Solution: Incorporates a precision-engineered light guide film layer over the LED solution, uniformly diffusing point light sources across the entire illuminated area. Advantages include uniform illumination and ultra-thin profile. This is the mainstream choice for mid-to-high-end products.
EL (Electroluminescent) Solution: EL cold cathode films inherently function as area light sources, providing exceptionally uniform and soft illumination with low power consumption. Disadvantages include driver requirements and a half-life, resulting in brightness decay over time.
