Custom Dome Sheets & LGF (Light Guide Film)
Estructura: Compuesto multicapa (PET/acero inoxidable/capa conductora);
Rango de fuerza de accionamiento: 5-500gf (personalizable);
Carrera estándar: 0,05-0,5 mm;
Resistencia de contacto: < 100 mΩ (típico);
Ciclo de vida: ≥500.000 ciclos;
Tolerancia medioambiental: -40℃ ~ +85℃ (ampliable hasta 125℃);
Grado de protección: Diseño hasta IP68.
Dome Sheets & LGF (Light Guide Film) solutions represent a significant evolution beyond standard metal domes. This technology integrates a reliable Metal Dome Sheet with a precision light guide layer into a single, unified LGF Dome Sheet module. This innovative approach solves key design challenges—such as uneven backlighting, complex assembly, and increased thickness—associated with traditional backlit buttons. An LGF metal dome array delivers both crisp tactile feedback and perfectly uniform illumination, making it the ideal choice for modern interfaces where user experience and aesthetics are paramount.
| Categoría de parámetros | Gama estándar | Especificación Premium | Norma de ensayo |
|---|---|---|---|
| Fuerza de accionamiento | 10 - 200 gf | 5 - 500 gf (personalizable) | IEC 61000-4-2 |
| Viajar | 0,05 - 0,5 mm | 0,02 - 1,0 mm | ISO 13732-1 |
| Resistencia de contacto | < 100 mΩ | < 50 mΩ | EIA-364-23 |
| Tiempo de rebote | < 10 ms | < 5 ms | MIL-STD-202 |
| Vida útil | 1 millón de ciclos | 5 millones de ciclos | IEC 60384 |
| Estructura | especificación | Fotografía |
|---|---|---|
| LGF | Tinte de plata + película de luz difusa + cinta adhesiva de doble caraLGF+DOME SHEET |  |
| Papel de bloqueo de la luz+LGF+DOME SHEET |  |
| Desafío | Planteamiento del problema | Solución / Avance tecnológico | Resultados obtenidos |
|---|---|---|---|
| Control de la coherencia táctil | Variación de la fuerza entre lotes > 15 % | Utillaje digital + inspección de fuerza 100 % basada en IA | Desviación de la fuerza < 5 % |
| Resistente al agua y al polvo | Fiabilidad en entornos agresivos | Junta de borde laberíntico + revestimiento nanohidrófobo | IP68 (validado mediante prueba de inmersión de 3 m) |
| Requisito ultrafino | Formato delgado | Cúpula de acero inoxidable ultrafina de 0,08 mm + laminado de sustrato flexible | El grosor de las teclas laterales del teléfono se ha reducido de 0,8 mm a 0,3 mm. |
| Análisis del escenario de aplicación | Requisitos medioambientales | Características mecánicas | Parámetros eléctricos | Restricción estructural |
|---|---|---|---|---|
| Electrónica de consumo | -20 °C - +70 °C | 10 - 150 gf | < 100 mΩ | Espesor < 0,3 mm |
| Electrónica del automóvil | -40 °C - +105 °C | 50 - 300 gf | < 50 mΩ | Protección IP67 |
| Equipos médicos | +10 °C - +40 °C | 20 - 100 gf | Certificado médico | Conformado de superficie curva |
| Solución Nivel | Material del sustrato | Cúpula (metal) Material | Vida nominal |
|---|---|---|---|
| Económico | PET | Acero inoxidable 304 | 0,5 M ciclos |
| Equilibrado | PEN | Acero inoxidable 301 | 1 M ciclos |
| Buque insignia | PI | Aleación de berilio y cobre | 5 M ciclos |
Shanyo’s Dome Sheets & LGF provide critical benefits for sophisticated electronic designs:
Engineered microstructures within the LGF Dome Array ensure even light diffusion across the entire panel, eliminating hotspots and creating a premium, consistent glow.
Combining the switch and light guide functions into a single film module enables a remarkably slim profile, facilitating sleek, modern product designs.
As a pre-assembled unit, the LGF metal dome array reduces component count, streamlines production, and minimizes potential points of failure, improving overall durability.
The integrated Metal Dome Sheet maintains a definitive, reliable snap feel with a lifecycle of over 500,000 actuations, ensuring a high-quality user interaction.
Both the tactile dome switch layout and backlighting patterns can be fully customized in shape and effect, supporting unique branding and UI requirements.
The monolithic film construction provides a natural barrier against dust and moisture, forming an excellent foundation for achieving high IP-rated enclosures.
Shanyo's Dome Sheets & LGF can be applied to various industries and specific products.
| Application Field | Typical Use Case | Key Benefits Provided by LGF Dome Sheets |
|---|---|---|
| Electrónica de consumo | Smartwatch crowns, high-end remote controls, gaming controllers. | Delivers brand-defining uniform backlight and premium haptics in compact, design-driven devices. |
| Automotive Interiors | Steering wheel controls, center console touch panels, window switches. | Meets automotive-grade durability and temperature requirements while offering excellent visibility and feel. |
| Productos sanitarios | Patient monitor interfaces, portable diagnostic equipment. | Ensures clear, reliable operation in low-light environments; seamless surface is easy to clean and disinfect. |
| Industrial Controls & Home Appliances | Industrial HMI panels, control panels for premium kitchen appliances. | Provides a robust, reliable interface with excellent visibility in various lighting conditions. |
Shanyo colabora con empresas líderes de diversos sectores en todo el mundo para diseñar y fabricar para ellas sistemas de domos.
A: The key advantage is integration and performance. A traditional assembly stacks separate components (LEDs, light guide plate, rubber dome, metal dome), leading to potential alignment issues, light loss, and greater thickness. An LGF metal dome array integrates the light guide and switch into a single, thin film, guaranteeing superior backlight uniformity, a slimmer profile, and simpler, more reliable assembly.
A: Not at all. The tactile response is solely determined by the performance of the precision-engineered metal snap dome. The light guide layer is designed to coexist without interfering with the dome’s operation, ensuring you receive both perfectly even illumination and a crisp, consistent tactile click.
A: Yes. By designing independent optical channels and zones within the LGF Dome Array, and pairing it with a compatible LED driver circuit, we can achieve dynamic lighting effects including multi-color RGB, breathing patterns, and sequential illumination.
A: Absolutely. The LGF Dome Sheet module itself, being a flat film circuit, is inherently easier to seal than mechanical buttons. Using full lamination bonding, perimeter gaskets, or other sealing techniques, end products can readily achieve high ingress protection ratings like IP68.
A: To begin, we primarily need:
1) Your panel layout and industrial design, specifying desired lit areas and effects;
2) Backlight performance goals (brightness, color, LED specifications);
3) Tactile requirements (actuation force and travel for each key);
4) Environmental specs (operating temperature, required IP rating).
We will then provide a complete solution from optical simulation to functional prototypes.
Pick up any premium smartwatch, close your eyes, and just press the side button. There is a very specific, satisfying, and hyper-crisp snap that happens. It feels incredibly solid. It
There is a very specific, highly satisfying click that happens when pausing a track on high-end wireless earbuds. It feels physical and completely solid. It’s almost hard to believe there’s
The Hidden Role of Metal Dome Switches in Fitness Equipment Walk into any gym and start pressing buttons on treadmills, ellipticals, or stationary bikes. Each press feels responsive, clicks satisfyingly,
Fábrica nº 20, Parque Industrial Tianhe, nº 252 Weihe Road, Zona de Desarrollo Económico y Tecnológico de Qingdao
