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0102030405
TV LED Backlight PCB Assembly--STHL.png

TV LED Backlight PCB Assembly--STHL

TV LED Backlight PCB is the core component of TV backlight systems, designed to provide uniform, high-brightness backlight for LCD TVs of various sizes. It integrates high-density LED arrays, driving circuits, and dimming control modules, ensuring clear, vivid display effects and energy-saving performance. Think of it as the "light source core" of TV displays, directly affecting the brightness, contrast, and color accuracy of the TV screen. It supports dynamic dimming technology, adapting to different picture brightness to reduce power consumption. Our 10,000-square-meter production base and 2 function test lines ensure each PCB meets the high standards of the TV industry, with stable performance and long service life.

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    TV LED Backlight PCB Assembly--STHL

    Early challenges in TV LED Backlight adoption—such as uneven screen illumination, electromagnetic interference (EMI), and poor color consistency across display panels—have been overcome by specialized PCB assembly technologies, particularly rigid-flex PCBs and high-precision surface mount technology (SMT). These innovations effectively enhance the stability of LED drive circuits for uniform backlighting, while integrating EMI shielding layers to eliminate interference from external TV components (such as mainboards and power supplies) and surrounding electronic devices. Rigid-flex PCBs, in particular, balance compact form factors with reliable signal transmission, supporting the slim design and large-size adaptation of TV panels without compromising backlight performance. This technological leap has enabled TV LED Backlight PCB Assemblies to outperform traditional TV backlight circuits in key areas:

    • Superior Signal Integrity

      Advanced impedance-controlled routing and ultra-low-noise PCB substrates (FR-4, aluminum-core, or flexible substrates for side-lit designs) minimize signal attenuation during the transmission of LED drive and dimming signals. 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 TV screen and precise adjustment of local dimming zones. This eliminates signal crosstalk between LED chips and ensures consistent light output, meeting the strict optical performance requirements for high-definition (4K/8K) TV displays as specified in industry standards.

    • Versatile Form Factor Adaptability

      Compliant with IEC 60950 display safety standards and SJT11460.3.3.1-2021 specifications for TV direct-lit LED backlight assemblies, the assemblies adopt reinforced isolation designs (such as double-layer insulation, anti-short circuit protection, and surge protection) to prevent electrical leakage risks. High-quality substrates are used to adapt to diverse TV backlight types—including direct-lit and side-lit designs—and various TV sizes (from 32-inch to 100-inch+), supporting slim TV designs and seamless integration with TV panels. The conformal coating materials also meet fire-retardant and insulation requirements, ensuring safety for long-term TV operation and compatibility with different TV structural designs.

    • Reliable Long-Term Operation

      ENIG (Electroless Nickel Immersion Gold) surface finishes and waterproof conformal coatings (IP65 rating, adapted to TV internal environments) provide excellent corrosion resistance and moisture protection, essential for PCB assemblies installed inside TV enclosures. Combined with rigorous temperature (-20°C to +70°C) and vibration testing, as well as enhanced thermal management through optimized heat dissipation pathways, the assemblies maintain stable performance during long-term continuous operation (up to 50,000 hours), complying with long-term stability and accelerated aging test requirements. They also minimize light decay, ensuring consistent backlight brightness and color accuracy throughout the TV’s service life.

    Key Applications Across TV LED Backlight Sectors

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

    Consumer Home TVs

    High-precision TV LED backlight PCB modules, featuring uniform backlighting and precise dimming control, integrated with TV mainboards for seamless operation. These are widely used in 4K/8K smart TVs, OLED backlit TVs, and QLED TVs, providing vivid color reproduction and uniform screen illumination to enhance home viewing experience.

     Professional Monitor TVs

    In professional scenarios such as broadcast studios, medical monitors, and design workstations, the PCB assemblies power high-end TV monitors that require accurate color reproduction and uniform backlighting. The stable signal transmission and precise dimming control meet the strict professional requirements for color accuracy and image clarity.

     Commercial Display TVs

    Rugged TV LED backlight PCB assemblies, built with anti-interference circuits and durable substrates, ensure stable performance in commercial display TVs used in shopping malls, hotels, and office lobbies. They support 24/7 continuous operation, maintaining consistent backlight performance for digital signage, advertising displays, and public information screens.

    Large-Size TV & Smart Displays

    Custom TV LED backlight PCB modules, leveraging flexible design and modular assembly, provide reliable technical support for large-size TVs (80-inch+), smart whiteboards, and video walls. They support seamless and uniform backlighting across large display areas, meeting the needs of home theater, conference rooms, and public display scenarios.

    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

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    Digital Innovation

    APPhored (7)
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    Digital Innovation

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    Digital Innovation

    Material are (1)
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    Digital Innovation

    第24点图替换组合配图1
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    Digital Innovation

    DIP 1
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    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.

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