English
English French German Portuguese Spanish Russian Japanese Korean Arabic Irish Greek Turkish Italian Danish Romanian Indonesian Czech Afrikaans Swedish Polish Basque Catalan Esperanto Hindi Lao Albanian Amharic Armenian Azerbaijani Belarusian Bengali Bosnian Bulgarian Cebuano Chichewa Corsican Croatian Dutch Estonian Filipino Finnish Frisian Galician Georgian Gujarati Haitian Hausa Hawaiian Hebrew Hmong Hungarian Icelandic Igbo Javanese Kannada Kazakh Khmer Kurdish Kyrgyz Latin Latvian Lithuanian Luxembou.. Macedonian Malagasy Malay Malayalam Maltese Maori Marathi Mongolian Burmese Nepali Norwegian Pashto Persian Punjabi Serbian Sesotho Sinhala Slovak Slovenian Somali Samoan Scots Gaelic Shona Sindhi Sundanese Swahili Tajik Tamil Telugu Thai Ukrainian Urdu Uzbek Vietnamese Welsh Xhosa Yiddish Yoruba Zulu Kinyarwanda Tatar Oriya Turkmen Uyghur
Leave Your Message
Products Categories
Featured Products
Open Frame Power Supply PCB Assembly--STHL

Open Frame Power Supply PCB Assembly-...
Modular Power Supply PCB Assembly--STHL

Modular Power Supply PCB Assembly--STHL
Redundant Power Supply PCB Assembly--STHL

Redundant Power Supply PCB Assembly--...
Hot-Swappable Power Supply PCB Assembly--STHL

Hot-Swappable Power Supply PCB Assemb...
Load Balancer PCB Assembly

Load Balancer PCB Assembly
Network Interface Card PCB Assembly

Network Interface Card PCB Assembly
Wi-Fi Module PCB Assembly

Wi-Fi Module PCB Assembly
Bluetooth Module PCB Assembly

Bluetooth Module PCB Assembly
Repeater PCB Assembly

Repeater PCB Assembly
Optical Transceiver PCB Assembly

Optical Transceiver PCB Assembly
0102030405
Direct-Lit LED Backlight PCB Assembly--STHL.png

Direct-Lit LED Backlight PCB Assembly--STHL

LED Floodlight PCB is a specialized circuit board designed for LED floodlights, a key component of outdoor lighting systems, offering powerful illumination for large areas such as sports fields, parking lots, and building exteriors. It integrates high-power LED chips, driving circuits, and waterproof structures, engineered to withstand rain, wind, and dust, ensuring reliable performance in harsh outdoor environments. As the core of floodlights, it provides high-intensity light over wide spaces, with adjustable angles and energy-saving performance. Our 7 SMT high-speed production lines support mass production, with each PCB undergoing strict waterproof and thermal testing to meet outdoor lighting standards, backed by our 20+ years of PCBA experience.

    Contact us

    Direct-Lit LED Backlight PCB Assembly--STHL

    Early challenges in Direct-Lit LED Backlight adoption—such as uneven array illumination, electromagnetic interference (EMI), and local hotspots from concentrated thermal load—have been overcome by specialized PCB assembly technologies, particularly rigid PCBs, metal-core PCBs (MCPCB), and high-precision surface mount technology (SMT). These innovations effectively enhance the stability of LED drive circuits for uniform array lighting, while integrating EMI shielding layers to eliminate interference from external TV/display components (such as mainboards, power supplies, and control modules) and surrounding electronic devices. MCPCBs and rigid PCBs, in particular, balance compact form factors with reliable signal transmission and efficient heat dissipation, supporting the high-density LED array layout and slim design of direct-lit displays without compromising backlight performance. This technological leap has enabled Direct-Lit LED Backlight PCB Assemblies to outperform traditional direct-lit backlight circuits in key areas:

    • Superior Signal Integrity

      Advanced impedance-controlled routing and ultra-low-noise PCB substrates (MCPCB, FR-4) minimize signal attenuation during the transmission of LED drive and dimming signals across the entire PCB array. Equipped with high-resolution (≥16-bit) ADC integration, they ensure the accuracy of brightness control and color gamut reproduction, laying the foundation for uniform backlighting across the entire display panel and precise adjustment of local dimming zones. This eliminates signal crosstalk between LED chips in the array, ensures consistent light output across the PCB surface, and meets the strict optical performance requirements for high-definition (4K/8K) displays, as well as LM-79 photometry standards for light measurement.

    • Versatile Form Factor Adaptability

      Compliant with IEC 60598 lighting safety standards and IEC 62471 photobiological safety standards, the assemblies adopt reinforced isolation designs (such as double-layer insulation, anti-short circuit protection, and surge protection) to prevent electrical leakage risks and ensure blue light radiation is below RG 0, the safest level defined by IEC 62471. High-quality MCPCBs and rigid substrates are used to adapt to diverse direct-lit backlight types—including full-array and zone-dimming designs—and various display sizes (from 32-inch to 100-inch+), supporting slim and frameless display designs and seamless integration with TV and monitor panels. The conformal coating materials also meet fire-retardant and insulation requirements, ensuring safety for long-term operation and compatibility with different display structural designs, while adhering to DLC SSL v6.0 QPL listing requirements.

    • Reliable Long-Term Operation

      ENIG (Electroless Nickel Immersion Gold) surface finishes and waterproof conformal coatings (IP65 rating, adapted to display internal environments) provide excellent corrosion resistance and moisture protection, essential for PCB assemblies installed inside display enclosures. Combined with rigorous temperature (-20°C to +70°C) and vibration testing, as well as enhanced thermal management through optimized heat dissipation pathways, MCPCB copper weight optimization, and thermal interface materials (TIM), the assemblies maintain stable performance during long-term continuous operation (up to 50,000 hours). They comply with long-term stability and accelerated aging test requirements (LM-80 and TM-21 projections), minimize light decay, and avoid local hotspots by evenly distributing thermal load across the PCB surface, ensuring consistent backlight brightness and color accuracy throughout the display’s service life.

    Key Applications Across Direct-Lit LED Backlight Sectors

    Direct-Lit LED Backlight PCB technology powers high-performance, uniform, and efficient backlighting solutions for diverse display types, supporting high-definition display and enhanced viewing experience while ensuring compliance with international safety and performance standards and long-term reliability.

     Consumer Home TVs

    High-precision Direct-Lit LED Backlight PCB modules, featuring uniform array lighting and precise local dimming control, integrated with TV mainboards for seamless operation. These are widely used in 4K/8K smart TVs, QLED TVs, and high-end LCD TVs, providing vivid color reproduction, deep contrast, and uniform screen illumination to enhance home viewing experience, while ensuring safe blue light emission and meeting photometric performance standards.

    Professional Monitors

    In professional scenarios such as broadcast studios, medical monitors, and design workstations, the PCB assemblies power high-end direct-lit monitors that require accurate color reproduction and uniform backlighting. The stable signal transmission and precise dimming control of the PCB arrays meet the strict professional requirements for color accuracy and image clarity, while adhering to photobiological safety norms and photometric standards.

    Commercial Display Screens

    Rugged Direct-Lit LED Backlight PCB assemblies, built with anti-interference circuits and durable MCPCBs, ensure stable performance in commercial display screens used in shopping malls, hotels, and office lobbies. They support 24/7 continuous operation, maintain consistent backlight performance for digital signage, advertising displays, and public information screens, and comply with commercial safety and performance standards, including low ripple and flicker-free dimming requirements.

    Large-Size Displays & Video Walls

    Custom Direct-Lit LED Backlight PCB modules, leveraging high-density LED array design and modular assembly, provide reliable technical support for large-size displays (80-inch+), smart whiteboards, and video walls. They support seamless and uniform backlighting across large display areas, evenly distribute thermal load to avoid hotspots, and meet the needs of home theater, conference rooms, and public display scenarios, while complying with relevant safety and performance certifications.

    Why STHL PCBA should be your top choice for your LED PCBA needs?

    Let's explore the top 10 reasons why!

    Real Factory

    STHL PCBA is a real factory with 10,000+m² highly automated, dust-free factory，7 SMT lines, 2 DIP lines, 2 FCT lines, and 2 box building assembly lines. 

    Quality Guarantee

    We buy components from famous international platform like Mouser, Digikey, Farnell, Future, Avnet, Arrow or the agents. No components substitutes without customers approval!

    Rich Experience

    20+ years of experience in PCB & PCBA field.

    Cost Dowm

    Professional engineering team supports cost down.

    Global Sourcing

    500k parts with 100+ agents and suppliers.

    No MOQ

    No minimum order requests, we accept both prototype and volume quantity orders.

    Fully Certified

    With IATF16949, ISO9001, ISO14001, ISO13485 Certifications.

    NDA

    We ensure all of your projects documents security and sign NDA before RFQ.

    Intelligent Management

    Use Intelligent ERP system, MES (manufacturing execution system) for fast tracking.

    Fast Delivery

    Prototype orders will be fast completed and delivered, mass orders lead time is 4~5 weeks.

    About STHL PCB & PCBA

    LED PCB Assembly Revolutionizing Lighting Technology with Precision and Per (1)

    Shenzhen STHL Technology Co., Ltd. is a high-quality provider of electronics manufacturing services (EMS) in China, we serve customers worldwide along the whole industry chain including product design, material sourcing, PCBA production, cable assembly, box build assembly and comprehensive testing services.

    Established in 2006, we have more than 20 years of experience in electronics contract assembly manufacturing. Currently, we employ more than 220 staff members. Our 10,000 sqm facilities include 7 surface-mount technology (SMT) production lines, 2 through hole technology (THT) lines , 2 function testing lines and 2 box build production lines.

    At STHL, we provide electronics assembly services for energy power, communications, consumer electronics, computers & storage, safety & security, commercial and industrial products. Customers mainly from United States, Brazil, United Kingdom, Germany, Spain, Italy, Poland and . As an IATF16949，ISO9001, ISO14001, and ISO13485 certificated electronics assembly manufacturer, we produce products exactly comply with ROHS standard and quality guarantee. Based on our excellent engineering and production capacities in technical areas such as materials analysis & storage, advanced equipment, reliability testing (AOI, X-RAY, ICT test and function test), high effective SMT and THT assembly, we are recognized as a long-term reliable PCBA vendor by more and more customers wordlwide.

    Products Capability

    Items

    PCB capacity

    PCB name

    LED PCB Assembly: Revolutionizing Lighting Technology with Precision and Performance

    Material

    FR-4; High TG FR-4; Aluminum; CEM-1; CEM-3; Rogers, etc

    PCB type

    Rigid, flexible, rigid-flexible

    Layer NO.

    1, 2, 4, 6, up to 24 layer

    Shape

    Rectangular, round, slots, cutouts, complex, irregular

    Max PCB dimensions

    1200mm*600mm

    Board Thickness

    0.2mm-4mm

    Thickness Tolerance

    ±10%

    Min Hole Size

    0.1mm (4 mil)

    Copper Thickness

    0.5 OZ-3OZ (18 um-385 um)

    Copper Plating hole

    18um-30um

    Min Trace Width

    0.075mm (3mil)

    Min Space Width

    0.1mm (4 mil)

    Surface finish

    HASL, LF HASL, Imm Gold, Imm Silver, OSP etc

    Solder mask

    Green, red, white, yellow, blue, black, orange, purple

    Assembly details

    SMT and Thru-hole, ISO SMT and DIP lines

    Testing on products

    Testing jig/mold , X-ray Inspection, AOI Test, Functional test

    Quantity

    Min quantity : 1pcs. Prototype, small order, mass order, all OK

    Products Capability

    Files needed

    PCB : Gerber files(CAM, PCB, PCBDOC)

    Components : Bill of Materials(BOM list)

    Assembly : Pick-N-Place file

    PCB Panel Size

    Min size : 0.25*0.25 inches(6*6mm)

    Max size : 1200*600mm

    Components details

    Passive Down to 0201 size

    BGA and VFBGA

    Leadless Chip Carriers/CSP

    Double-sided SMT Assembly

    Fine BGA Pitch to 0.2mm(8mil)

    BGA Repair and Reball

    Part Removal and Replacement

    Component package

    Cut Tape, Tube, Reels, Loose Parts

    PCB+ assembly process

    Drilling---Exposure---Plating---Etaching & Stripping---Punching---Electrical Testing---SMT---Wave

    Soldering---Assembling---ICT---Function Testing---Temperature & Humidity

    13
    01

    Digital Innovation

    APPhored (7)
    01

    Digital Innovation

    DSC_3571
    01

    Digital Innovation

    Material are (1)
    01

    Digital Innovation

    第24点图替换组合配图1
    01

    Digital Innovation

    DIP 1
    01

    Digital Innovation

    How to Get Started with STHL

    Ready to partner with us for your LED PCB Assembly project? Here’s how you can get started

    • Contact Us

      Contact Us

      Reach out to our sales team via phone, email, or online chat to discuss your project requirements.
    • Professional Expertise (2)

      Provide Design Files

      Send us your PCB design files (Gerber, BOM, etc.) for a detailed quote.
    • Cost-Effective Solutions

      Get a Quote

      We will provide you with a comprehensive quote, outlining all costs and timelines.
    • Delivery

      Production and Delivery

      Once the quote is approved, our team will begin production, ensuring your PCB assembly is completed on time and to the highest quality standards.

    Make an free consultant

    Whether you need PCB Fabrication or PCBA Assembly Service, STHL delivers innovation and reliability.

    Your Name*

    Phone Number

    Country

    Remarks*

    reset