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6-Layer HDI LED Display PCB
High-density HDI PCBs engineered for fine-pitch LED displays with high-resolution video processing, thermal management, and seamless LED matrix interconnectivity for indoor and outdoor applications.
Modern LED displays demand PCBs that can handle high-density LED matrices, high-speed video data, and significant thermal loads — all in increasingly thinner profiles. From fine-pitch indoor displays to outdoor billboards, the PCB is the backbone that determines image quality and longevity. At Season Multilayer Circuit, we manufacture 6-layer HDI LED display PCBs that deliver the density, thermal performance, and signal integrity your display systems require.
1+4+1
Layer Count
3/3 mil
Min. Trace/Space
0.10 mm
Min. Via Diameter
Tg 180
Glass Transition Temp
1-2 u”
ENIG Gold Thickness
ISO9001
ISO14001
UL (E305905)
IPC-Class 2/3
RoHS
6-Layer HDI LED Display PCB Stackup Diagram
Our 6-layer HDI stackup for LED display applications is designed to support high-density LED matrices, high-speed video data buses, and efficient thermal dissipation in a compact, reliable package.
- Top Layer (Copper/Plated): LED pad array, driver IC placement, fine-pitch components
- Inner Layer 2 (Ground Plane): Signal reference and EMI shielding for LED driver circuits
- Inner Layer 3 (Signal Layer): High-speed video data bus routing (LVDS/MIPI)
- Inner Layer 4 (Power Plane): High-current power distribution for LED arrays and driver ICs
- Inner Layer 5 (Signal Layer): Control signal routing with buried via connections
- Bot Layer (Copper/Plated): Thermal dissipation pad and bottom-side routing
If your current‑carrying trace width and spacing fall outside the tight impedance tolerance range, our engineering team will design an optimal stack‑up structure for your specific LED display layout. However, impedance control is not required for LED PCBs, so impedance calculation and tuning are unnecessary for this type of circuit board.
Technical Capability & Specifications
| Parameter | Specification | Advanced Capabilities |
| Layer Count | 6-Layer HDI（1+4+1） | 2-32L(Mass); 2-64L(Sample) |
| Base Material | Fr-4.0 S1000-2M Tg180 | SY, NY,TUC,ZY,EMC,KB,ITEQ, Rogers, Megtron , Nelco,Isola |
| Board Thickness | 0.6mm | 0.2-6.4mm(Mass);0.15-20mm(Sample) |
| Panel Size | 400*300mm/1 | 800*600mm(Mass);1050*610(Sample) |
| Copper Thickness | Outer: 1 OZ Inner: 1 OZ | Outer: 1/3-12 OZ Inner: 1/4-12 OZ |
| Min Drill Size | 0.2mm | 0.15mm(Mass);0.127mm(Sample) |
| Min Laser Size | 0.1mm | 0.075（Sample） |
| Min Trace Width/Spacing | 3/3mil | 2.36/2.36mil(1OZ)（Mass）2/2mil（Sample） 2/2mil(HOZ) 1.6/1.6mil（Sample） |
| Min BGA Pad | 0.25mm | 0.15mm |
| Surface Finish | ENIG1-2“ | OSP,ENIG,HASL,Electric Hard Gold, ENIG+OSP,ENEPIG,Immersion Silver & Tin |
| Solder Mask Color | Matte Black | Green, Blue,Black,White,Yellow,Red,Pruple, Matte Green,Matte Blue,Matte Black |
| Min Routing Tolerance | ±0.15mm | ±0.75mm |
| Quality Standard | IPC-Class 2,RoHS | IPC-Class 3,UL,Rohs,IATF16949,GJB |
| PCB Type | HDI（1+N+1） | HDI,Multilayer,Rigid-Flex,High Frequency,High Speed,Hybrids & Mixed Dielectrics |
Key Advantages of Our LED Display PCB
- High-Current Power Distribution: 2 OZ outer copper with dedicated power plane (L4) handles the high current demands of dense LED arrays without voltage drop or thermal hotspots.
- Superior Thermal Management: Optimized thermal via arrays under LED driver ICs pull heat through the board to the bottom copper layer, preventing thermal-induced color shift and extending LED lifespan.
- High-Density LED Routing: HDI blind and buried vias enable fine-pitch LED pad routing (P0.9 and below) with clean signal paths between driver ICs and LED arrays.
- Controlled Impedance Video Bus: 100 ohm differential pair routing for LVDS/MIPI video data buses ensures error-free image data transmission at high refresh rates (3840Hz+).
- Black Solder Mask Standard: Black solder mask minimizes light reflection between LEDs, improving contrast ratio and color accuracy for professional-grade displays.
Overcoming Critical Challenges in LED Display Design
When sourcing HDI PCBs for LED display applications, engineers encounter three major challenges. Here is how our engineering team eliminates them:
1. Thermal Hotspots and LED Color Shift
The Problem: High-density LED arrays generate significant heat concentrated in small areas. Poor thermal management causes localized hotspots that shift LED color temperature, reduce brightness uniformity, and shorten LED lifespan.
Our Solution: Our 6-layer stackup uses a dedicated thermal management strategy: 2 OZ outer copper for heat spreading, thermal via arrays under each driver IC, and an inner power plane (L4) that doubles as a thermal spreader. This reduces junction temperatures by 15-20C compared to standard boards.
2. Signal Integrity for High-Refresh Video Data
The Problem: Fine-pitch LED displays require high-bandwidth video data at 3840Hz+ refresh rates. Poor PCB design causes EMI, signal reflection, and data corruption, resulting in visible flickering, ghosting, or frozen pixels.
Our Solution: Every high-speed signal layer is paired with a solid ground reference. Differential pair routing maintains tight 100 ohm impedance control (+/-8%), ensuring clean video data transmission. Blind and buried vias minimize signal stub lengths, reducing reflection at high frequencies.
3. Miniaturization for Fine-Pitch LED Arrays
The Problem: LED pitches below 1.0mm require extremely dense routing between LED pads and driver ICs. Conventional through-hole PCBs cannot route enough traces in the available space, forcing larger board sizes or fewer LEDs per module.
Our Solution: Our HDI technology with 0.10mm laser-drilled blind vias enables P0.9 and finer LED pitch routing. Via-in-pad technology places interconnects directly under LED pads, maximizing routing density without increasing board area.
Where Our LED Display PCBs Are Used
Our 6-layer HDI LED display PCBs power a wide range of display applications:
- Fine-Pitch Indoor LED Displays: P0.9-P1.5 pixel pitch displays for broadcast studios, control rooms, and corporate lobbies requiring ultra-high resolution.
- Outdoor LED Billboards: High-brightness, weather-resistant display modules for highway billboards and building-facade installations.
- LED Video Walls: Modular display panels for concerts, sports arenas, and live event broadcasting with seamless tiling.
- Transparent LED Displays: See-through LED screens for retail windows and architectural glass installations.
- Commercial LED Screens: Digital signage displays for retail, hospitality, and transportation hubs.
Our Quality Guarantee for LED Display PCBs
LED display electronics operate continuously and cannot tolerate failures. We implement rigorous testing protocols on every board:
- 100% AOI Inspection: Automated Optical Inspection scans every layer for trace breaks, shorts, and alignment errors.
- 100% Electrical Testing (E-Test): Flying probe or fixture-based testing verifies continuity and isolation.
- Thermal Imaging: Available thermal imaging verification of thermal via performance under load.
- Controlled Impedance Testing: Polar Instruments impedance test report with every batch.
- Certifications: ISO9001:2015, ISO14001, UL (E305905), RoHS compliant. IPC-Class 2/3 available.
Why Choose Season PCB for Your LED Display PCB?
With nearly 20 years of experience in PCB manufacturing, Season Multilayer Circuit has served over 8,000 global clients in LED display, consumer electronics, and telecommunications. Our three manufacturing facilities provide capacity for both rapid prototyping and high-volume production.
We understand that LED display electronics demand consistent quality and thermal reliability. That is why every 6-layer HDI LED display PCB we ship is backed by:
- Free DFM file checking before production
- 24/7 dedicated engineering support
- Guaranteed on-time delivery
- No minimum order quantity — from 1 prototype to 100,000+ units
- Engineering fee waivers on bulk production orders
Season PCB specializes in HDI LED display PCB manufacturing for fine-pitch indoor and outdoor LED display applications. Our LED display PCB products feature high-density interconnect technology, superior thermal management, and controlled impedance routing. Each LED display PCB meets IPC standards.
For your LED display PCB needs, Season PCB provides fast turnaround, competitive pricing, and ISO-certified quality. Contact us for LED display PCB manufacturing today.
Our LED display PCB boards comply with UL safety certifications and IPC manufacturing standards. Each LED display PCB undergoes thermal stress testing and signal integrity verification.
Frequently Asked Questions
Q1: What LED pitch sizes can your HDI PCBs support?
A: Our HDI PCBs with 0.10mm laser-drilled blind vias support LED pitches down to P0.7. For P0.9 and below, we recommend via-in-pad technology with resin-filled microvias. Our 3/3 mil trace/space capability provides sufficient routing density for fine-pitch LED driver interconnects.
Q2: How do you handle thermal management for high-power LED arrays?
A: We use a multi-layer thermal management approach: 2 OZ outer copper for heat spreading, dedicated thermal via arrays under driver ICs, and an inner power plane that doubles as a thermal spreader. For extreme thermal loads, we offer metal-core PCB (MCPCB) substrates and heavy copper (up to 12 OZ).
Q3: What is the lead time for HDI LED display PCB prototypes?
A: Standard HDI prototype lead time is 7-10 working days. Expedited 5-day service is available. Mass production typically takes 15-20 working days depending on order volume and complexity.
Ready to start your LED Display PCB project?
Whether you need 5 pieces for prototyping or 50,000 for mass production, our engineering team is ready to support your LED display project with DFM review, thermal analysis, and fast-turn fabrication.