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Non-Tactile LED Illuminated Membrane Keypad
- 2.54mm pitch female connector tail
- Integrated surface-mount status LEDs
- Chemical-resistant polyester graphic overlay
Direct OEM / ODM Manufacturer
Integrated Backlit Membrane Switch Engineering Since 2003
At Dongguan Ravo Electronics Co., Ltd., we eliminate the pain points of poor uniformity, light bleed, and bulky panel construction. Operating out of Fenggang Town, Dongguan, our 12,000+ m² facility combines precision screen printing, surface-mount LED placement, laser cutting, and clean-room optical bonding under one roof.
Whether you require ultra-thin Light Guide Film (LGF) backlighting for handheld medical devices, ruggedized IP67 waterproof keypads for industrial controllers, or crisp tactile metal domes on flexible polyimide (FPC) and rigid PCB backers, our in-house engineering team provides complete DFM reviews in under 2 hours.
2003
Established in Dongguan, China
12,000 m²
Clean-room production workshop
98.59%
Overseas inquiry response rate
≤2h
Average technical response speed
SMD LED & LGF Technology
Micro-optics diffusion with side-firing 0603/0805 LEDs ensures zero hotspotting, balanced luminescence, and thickness down to 0.8mm.
IP67 / IP68 Ingress Sealing
Continuous perimeter 3M 467MP/468MP adhesive laminations and sealed connector tails prevent fluid ingress in sterilization or washdown areas.
1,000,000+ Actuations
Nickel-plated and gold-plated stainless steel metal domes deliver crisp, positive tactile feedback engineered for high-repetition industrial usage.
FPC & PCB Hybrid Substrates
Choose between low-cost silver paste PET, high-density polyimide flexible circuits (FPC), or rigid FR-4 PCB carriers for component mounting.
Product Catalog
Custom Backlit Membrane Switches & Control Panels
Browse our field-tested product configurations. Every design is fully customizable by key count, graphic layout, LED color, backer substrate, and connection type.
FPC Circuit
Tactile Metal Dome FPC Membrane Keyboard
- Polyimide FPC copper circuit routing
- Matte anti-glare finish with embossed keys
- Snap-dome tactile feedback (>1M cycles)
Compact
3-Button Remote Controller Tactile Keypad
- Reverse screen-printed graphic overlay
- Embedded low-power LED indicators
- Compact handheld controller profile
Industrial
Industrial Controller Tactile FPC Keypad
- High-density fine-pitch FPC circuit
- Integrated ESD/EMI shielding layer
- Engineered for test bench and PLC units
Embossed
Pillow-Embossed Tactile Switch Panel
- Precision rim and pillow key embossing
- High-shear 3M 467/468MP backing
- Crisp operator confirmation even with gloves
Appliances
Appliance Backlit LED Membrane Foil Panel
- Uniform backlight across icons and legends
- Impervious wipe-clean front overlay
- Heat and moisture resistant construction
Medical
Medical-Grade IP67 Backlit Switch Panel
- Anti-microbial, wipe-down safe overlay
- IP67 ingress protection against liquids
- Multi-color LED status indicators
High Volume
Non-Tactile Screen-Printed Switch Keypad
- Low-profile flat design for flush integration
- High-conductivity silver paste printing
- 3M 9448A pressure-sensitive adhesive
Tactile
Embossed Metal Dome Keypad for Remotes
- 10mm / 12mm stainless steel metal snap domes
- Tactile actuation force from 250g to 450g
- Custom Pantone matched legend graphics
Display Window
PET/PC Overlay Panel with Display Window
- Optically clear transparent LCD/LED window
- Selective gloss, velvet, and matte textures
- Integrated tactile switch array
IP68 Seal
IP68 Waterproof Backlit Membrane Panel
- Submersible watertight perimeter gasket
- Embedded micro SMD LED illumination
- 3M 467MP high-performance acrylic adhesive
Rigid PCB
PCB-Backed EL / LED Backlit Keypad
- FR-4 rigid backing board with onboard components
- Electroluminescent (EL) or LED backlighting
- Direct board-to-wire connector soldering
Medical
Medical Instrument Metal Dome LED Keypad
- 2NO/2NC contact matrix flexibility
- Tested for over 10,000 to 1,000,000 cycles
- Anti-glare textured polyester front surface
Aluminum Plate
Aluminum-Backed Industrial Backlit Keypad
- CNC-machined aluminum plate support
- Rear threaded studs for rugged chassis mounting
- High-impact IP67 sealed membrane assembly
Gaming
Console Illuminated LED Membrane Switch
- High-repetition actuation life profile
- Dual-color and RGB indicator LED options
- Hard-coat overlay resistant to abrasion
Outdoor
Sealed Outdoor Waterproof LED Keypad
- UV-stabilized outdoor-grade PET film
- Sealed perimeter against dust, water, and fuel
- Custom backlighting for night visibility
Technical Comparison
Selecting the Optimal Backlighting Technology
Our application engineers help you balance optical brightness, stack height, power consumption, and tooling costs for your production program.
| Backlighting Method | Uniformity | Added Thickness | Power Usage | Typical Life | Primary Engineering Benefit |
|---|---|---|---|---|---|
| Light Guide Film (LGF) | Excellent (planar glow) | 0.125 mm – 0.25 mm | Low (few LEDs required) | 50,000+ Hours | Ultra-thin profile, uniform key legends with no hotspots |
| Direct Point-Source SMD LEDs | Targeted indicator icons | 0.8 mm – 1.2 mm | Very Low | 100,000+ Hours | Lowest tooling cost; ideal for power/status indicator icons |
| Electroluminescent (EL) Lamp | Completely Uniform | 0.2 mm – 0.3 mm | Moderate (requires AC inverter) | 5,000 – 10,000 Hours | Extremely flat, soft ambient glow for low-light environments |
| Fiber Optic Weave | Very Good | 0.3 mm – 0.5 mm | Low | 50,000+ Hours | Impervious to moisture, extreme temperatures, and EMI radiation |
Design Parameters
Standard Manufacturing Tolerances & Material Options
| Parameter | Standard Specification | High-Reliability / Medical Specification |
|---|---|---|
| Overlay Materials | Autotex Polyester (PET) EBA / F, Polycarbonate (PC) Lexan | Anti-microbial, UV-resistant textured PET (Autotex XE) |
| Circuit Conductors | Screen-printed Silver paste with Carbon overprint on PET | Polyimide Flexible Copper Circuit (FPC) or Rigid FR-4 PCB |
| Contact Rating | 30V DC, 100mA max | 50V DC, 200mA max |
| Contact Resistance | <100 Ω (depending on tail trace length) | <1 Ω with FPC copper conductors |
| Actuation Force | 180g – 350g (tactile metal dome) | Custom selectable from 160g up to 500g |
| Operating Temperature | -20°C to +70°C | -40°C to +85°C (continuous testing) |
| Mounting Adhesives | 3M 467MP, 3M 468MP, 3M 9448A | 3M VHB perimeter gasket adhesive for IP67/IP68 immersion |
Verified Facility
On-Site Verified Manufacturing Plant
Dongguan Ravo Electronics Co., Ltd. operates a vertically integrated factory in Fenggang Town, Dongguan. Our quality control system is audited to meet the expectations of tier-1 global OEM brands.
Trusted By Industry Leaders:
LINAK
FLEXTRONICS
LG
CASIO
EARLY LIGHT
Engineering FAQ
Frequently Asked Questions About Backlit Switches
Key technical answers to accelerate your engineering evaluation and vendor qualification process.
What is the difference between LED backlighting and Light Guide Film (LGF)?
Direct point-source LEDs illuminate specific localized points or indicator windows through the graphic overlay. Light Guide Film (LGF) uses micro-prisms across a thin optical layer to disperse light from side-mounted LEDs evenly across entire keypad legends and graphic patterns without hot-spots or excessive thickness.
How do you ensure zero light bleeding between adjacent illuminated keys?
We screen-print multiple layers of high-density opaque light-barrier inks between keys and implement precision-cut internal spacer gaskets. This optical isolation ensures every backlit key legend remains sharp, bright, and independent with zero light spill into neighboring keys or transparent LCD display windows.
What files are required to initiate a custom backlit switch quote and DFM review?
Please provide a 2D mechanical drawing (DXF, DWG, or PDF) showing overall outline dimensions, key locations, tail exit position, and connector pinout, plus graphic artwork (AI or vector PDF) with specified Pantone or RAL color codes. Our engineers will reply with a full DFM analysis within 2 hours.
Can backlit membrane switches operate in harsh medical or outdoor environments?
Yes. By utilizing continuous perimeter adhesive rings (such as 3M 467MP, 468MP, or VHB) and hermetically sealed tail exits, our switches achieve IP65, IP67, and IP68 ratings. They resist alcohol, disinfectants, hospital sterilization wipes, and outdoor UV exposure.
Request Custom Backlit Switch Specifications & Pricing
Get immediate technical assistance, stack-up design recommendations, and complete product catalogs from Dongguan Ravo Electronics Co., Ltd. Direct factory support with fast DFM turnaround.
Email Technical Sales: [email protected]
