Shenzhen Lunfeng Technology Co., Ltd
                                                                                                           
Verified Supplier
31 Years
Since 1995
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Polyester Backlight Membrane Switch with 0.005-0.020" LGF Technology and LCD Window for Industrial Control Panels

Price Negotiable
Price: Negotiable
MOQ: 1 piece
Delivery Time: 7-25 working days, To be negotiated
Brand: Lunfeng
Product Description
Light Guide Film Technology Overview
Our polyester backlight membrane switches feature advanced Light Guide Film (LGF) technology with thickness ranging from 0.005" to 0.020". The film contains precisely positioned microdots that refract light from side-view LEDs, creating uniform backlighting across the entire switch surface.
Key LGF Technology Benefits
  • Ultra-thin construction (0.005" to 0.020") without increasing device thickness
  • Minimal impact on tactile button feel
  • Even backlight distribution across large and small areas
  • High reliability with long operational lifetime
  • Low power consumption operating at reduced voltage
  • Available in multiple colors: White, Blue, Red, Green
Circuit Options Comparison
Specification Silver Printed Circuit Copper Etched FPC Circuit
Material PET (Polyester) Copper
Conductor Printed silver Copper
Contact Fingers Silver and Carbon Gold plated
Contact Button Pads Silver Gold plated
Life & Reliability Normal Good
Stability Normal Good
Resistance Low Very Low
Cost Low High
Lead Time 2-3 days 7-10 days
Pitch 0.5mm (not suggested), 1.0mm, 1.27mm, 2.54mm 0.5mm, 1.0mm, 1.27mm, 2.54mm
Technical Specifications
Electrical Properties
Electrical Level 35V(DC), 100mA, 1W
Contact Resistance 10Ω~500Ω
Insulation Resistance 100MΩ/100V
Dielectrics Voltage-resistance 250VRms(50~60Hz 1min)
Chattering Time ≤ 5ms
Life Time Flat type ≥ 5,000,000 cycles; Tactile type ≥ 1,000,000 cycles
Tail Folding R>1,180
Mechanical Properties
Operating Force Flat type 57~284g (2~10oz); Tactile type 170~397g (6~14oz)
Switch Stroke Flat type 0.1~0.5mm; Tactile type 0.6~1.5mm
Environmental Conditions
Operation Temperature -40°C ~ +80°C
Storage Temperature -40°C ~ +80°C
Humidity 40°C, 90%~95%, 240 hours
Applications
  • Home appliances and devices
  • Security protection systems with cipher code
  • Industrial control keypad panels
  • Consumer electronics and 3C items
  • Therapy medical systems and devices
  • Automatic machine control keypads
Manufacturing Advantages
  • 26 years of membrane switch manufacturing expertise
  • Strong R&D capability
  • Consistent quality control
  • Competitive pricing
  • Short lead times: 2-3 days for samples, rapid mass production
  • Complete solution design services
Product Images
Polyester backlight membrane switch with LCD window and LGF technology Technical diagram of membrane switch light guide film construction Close-up view of membrane switch keypad with uniform backlighting
Frequently Asked Questions
Q1: Are you a factory or trade company?
We are a membrane switch and graphic overlay manufacturer with 26 years of industry experience.
Q2: Is my switch file safe if I send it to you for manufacturing?
We respect customer design authority and will never manufacture membrane switches or graphic overlays for others without permission. NDA agreements are acceptable.
Q3: Can you copy membrane switch/graphic overlay samples without file?
Yes, we can clone membrane switches and graphic overlays according to your provided samples.
Q4: What payment methods do you accept?
We accept TT and Western Union payments.
Q5: What are your shipping methods?
We work with major carriers including DHL, UPS, FEDEX, TNT, and EMS. We can also coordinate with your preferred shipping partners.
Q6: What is your minimum order quantity?
Minimum order is 1 piece, though we typically recommend 5 pieces for membrane switches and 10 pieces for membrane overlays.
Q7: What are your main markets?
We serve global markets including Europe, USA, Brazil, Russia, Turkey, Iran, Australia, and Singapore.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Lunfeng Technology Co., Ltd
Location 6/F C3 Building, Hengfeng industrial Zone, Hezhou Village, Xixiang town, Bao'An District, Shenzhen, Guangdong, China
Contact Person Wong

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