# Copper Based PCB for Projector丨EBest Circuit (Best Technology) _Published: 2025-08-08_ Table of Contents Toggle - What Is Copper Based PCB? - Why Choose Copper Based PCB for Projector? - How to Design a Projector Copper Based PCB? - How to Make a Projector Copper Based PCB? - Our Projector Copper Based PCB Case Studies - Why Choose EBest Circuit (Best Technology) as Copper Based PCB Supplier? - Our Copper Substrate PCB Capabilities - How to Get a Quote for Your Copper Based PCB? Why choose [copper based PCB](https://www.bestpcbs.com/blog/2025/08/copper-based-pcb-for-projector%e4%b8%a8best-technology/) for projector? Let’s explore definition, benefits, design guide and manufacturing process, case study for copper based PCB. **Are you still troubled by these issues?** - Why do traditional PCBs flicker at high brightness? - Why are cooling fans becoming increasingly noisy? - Why are repair costs so high? **EBest Circuit (Best Technology) offers copper substrate solutions:** - Services: Custom copper-based PCB thermal conductive layers, with thermal conductivity reaching up to 398W/m·K. - (The copper layer directly connects to the bottom of the LED driver chip, dissipating 90% of heat in 0.3 seconds and improving image stability by 65%). - Services: Embedded copper block + micro-hole array design. - (A 2oz thickened copper layer combined with a 0.4mm heat dissipation hole array reduces thermal resistance to 0.4°C/W and reduces fan speed by 40%). - Services: Anti-oxidation surface treatment for copper substrates. - (Nickel-gold plating on the copper layer, salt spray resistance exceeding 500 hours, extending device life to 50,000 hours). **Welcome to contact us if you have any request for [copper based PCB](https://www.bestpcbs.com/products/metal-core-pcb.htm): sales@bestpcbs.com.** ## What Is Copper Based PCB? **[Copper based PCB](https://www.bestpcbs.com/blog/2025/08/copper-based-pcb-for-projector%e4%b8%a8best-technology/) **(also called copper substrate PCB) is a printed circuit board with a copper core layer designed for superior thermal conductivity. It efficiently dissipates heat from high-power components in applications like LEDs, power supplies, and projectors, outperforming traditional FR4 boards. The copper core (typically 0.5-3.0mm thick) ensures reliable performance in thermally demanding environments. [https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/main-10.jpg](https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/main-10.jpg) ## Why Choose Copper Based PCB for Projector? - Superior Heat Dissipation‌: Copper core (300-400 W/m·K) efficiently transfers heat away from high-power LEDs/Laser diodes, preventing thermal throttling and extending projector lifespan. - Compact & Lightweight‌: Enables thinner projector designs (0.5-3.0mm thick) without sacrificing cooling performance, ideal for portable and home theater systems. - Reliable Performance‌: Stable operation under continuous high-power loads (50W+), reducing flickering risks and maintaining consistent brightness. - Cost-Effective Longevity‌: Lower maintenance costs due to reduced thermal stress on components, minimizing failures and warranty claims. - Industry Standard for High-Brightness Models‌: Trusted by top projector brands for 4K/ultra-short-throw models demanding rigorous thermal management. ## How to Design a Projector Copper Based PCB? **1. Requirements Analysis and Planning** - Defining Parameters: Determine projector power (e.g., 300W LED light source), size (e.g., compact size ≤ 200mm²), heat dissipation requirements (temperature rise ≤ 85°C), and EMC standards (e.g., CISPR 32). - Material Selection: Select the copper substrate type (single-sided/double-sided/multi-layer) and thickness (1.0-3.0mm). Use high-thermal-conductivity PP material (0.1-0.3mm thickness) for the insulation layer. **2. Schematic Diagram and Layout Design** - Modular Layout: Divide modules by function (e.g., light source driver, signal processing). Heat-generating components (LEDs, laser diodes) are concentrated at the board edges, utilizing the copper substrate edges for heat dissipation. - Core Component Positioning: Prioritize placement of the DMD chip and laser light source, ensuring precise alignment with the optical components (error ≤ 0.1mm). **3. Thermal Design and Simulation** - Copper Thickness Step Design: Use a 3-4oz copper layer in the core heat-generating area, tapering to 2oz at the periphery. A teardrop-shaped transition (angle ≤ 45°) is used to reduce thermal stress. - Via Array Optimization: Arrange 0.3mm diameter heat dissipation vias (density ≥ 4 vias/cm²), combined with heat pipes (diameter 1.5mm) or phase change materials to enhance local heat dissipation. - Simulation Verification: Use ANSYS Icepak to simulate heat distribution, ensuring hotspot temperature rise ≤ 15°C, and adjust via placement and copper thickness. **4. Signal and Power Design** - High-Speed Signal Routing: HDMI/VGA signal lines should be short and straight, avoiding 90-degree corners. Use serpentine routing to compensate for delays (differential line length error ≤ 5 mil). - Power Distribution: Separate power and ground planes, with ground trace widths ≥ power lines (e.g., 10A power trace width ≥ 2mm). Critical signals (such as clocks) should be ground-wrapped, and return vias should be added when switching differential signal layers. **5. Manufacturing and Assembly Considerations** - Drilling Specifications: Hole diameters should meet the board thickness ratio (≤ 10:1) to avoid drill contamination, and depth-to-aperture ratios ≤ 0.8:1. - Surface Treatment: Use immersion gold (Immersion Gold) (Ni thickness 3-5μm, Au 0.05-0.1μm) to prevent deformation of the copper substrate caused by tin spraying. - Machining: Milling is used for copper substrate cutting, with edge chamfers of 0.8-1mm and a ≥2mm keep-out zone around the screw holes. **6. Verification and Testing** - DRC Check: Ensure there are no shorts or opens, and that line widths and spacing meet manufacturing capabilities (e.g., minimum line width 0.1mm). - Prototype Testing: Test thermal performance (temperature rise ≤ 85°C), signal integrity (eye diagram test), and mechanical strength (vibration test). [https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/1-6.png](https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/1-6.png) ## How to Make a Projector Copper Based PCB? **1. Cutting and Pretreatment** - Substrate Cutting: The raw copper substrate (double-sided or single-sided) is cut into production panels according to the designed dimensions, with a typical thickness of 1.0-3.0mm. - Edge Treatment: The board edges are processed using an automatic edge grinder and corner filleter to remove burrs and chamfer the edges by 0.8-1mm. - Cleaning and Baking: The board surface is cleaned to remove oxide layers and contaminants, and then baked at a high temperature (120-150°C) to relieve stress. **2. Inner Layer Circuit Fabrication** - Pretreatment: Chemical cleaning of the copper surface is performed to increase roughness and improve dry film adhesion. - Dry Film Lamination: A photosensitive dry film (15-25μm thick) is applied by hot pressing to cover the copper surface. - Exposure and Development: UV exposure is used to transfer the circuit pattern, and a developer (1% Na₂CO₃) is used to remove the uncured dry film. - Etching: An acidic copper chloride solution is used to etch the exposed copper areas, forming the inner layer circuits. The line width tolerance is ≤±10%. - Film Stripping and Inspection: A strong alkaline solution is used to remove the protective dry film, and AOI is used to inspect for circuit defects (shorts, opens). **3. Lamination and Heat Dissipation Enhancement** - Brown Treatment: Chemically roughens the copper surface of the inner layer to enhance interlayer bonding. - Lamination and Lamination: The layers are stacked in the order of “copper foil – prepreg (PP) – inner layer – PP – copper foil” and pressed using a vacuum laminator (temperature 180-200°C, pressure 30-50 kg/cm²). - Heat Dissipation Vias: Laser drilled (hole diameter 0.3mm, density ≥ 4 holes/cm²), electroplated with copper (20-25μm) on the hole walls, and filled with thermally conductive silicone. - Copper Block Embedding: T-shaped copper blocks (2.5mm thick) are embedded in the high-heat zone, ensuring 100% contact with the light source module. **4. Outer Layer Circuitry and Plating** - Outer Layer Dry Film: Repeat the inner layer process, attach the dry film, and expose and develop, leaving the areas to be plated. - Electroplating Thickening: The copper layer is thickened to the designed thickness (e.g., 2oz in the HDMI signal area), and tin is simultaneously plated to protect the pads. - Etching and Tin Stripping: Etching removes unprotected copper, and then using a tin stripping solution to remove the tin layer, exposing the complete outer layer circuitry. **5. Solder Mask and Surface Treatment** - Solder Mask Printing: Screen-print solder mask ink (primarily green) to cover non-solderable areas. - Curing: UV exposure cures to retain the solder mask layer, followed by high-temperature baking (150°C) for hardening. - Surface Treatment: Immersion Gold (5μm Ni, 0.1μm Au), with key pads locally thickened to 0.2μm. **6. Forming and Inspection** - Outer Fabrication: PCB contours are cut using a CNC milling machine, and panels are separated using a V-cut assembly. - Electrical Testing: Flying probe testing is used to check connectivity and insulation resistance. - Final Inspection: Visual inspection or AOI inspection is performed to check appearance (e.g., ink misalignment, board warping), ensuring compliance with IPC-A-600 standards. **7. Packaging and Shipping** - Vacuum Packaging: Vacuum-sealed in anti-static bags to prevent oxidation. - Test Report: Includes thermal distribution diagrams, signal integrity data, and reliability test results (such as a 500-hour burn-in test). ## Our Projector Copper Based PCB Case Studies At EBest Circuit (Best Technology), we have accumulated 19 years expertise in manufacturing projector copper-based PCBs, having successfully delivered multiple high-end projects for global clients. With a focus on thermal management, mechanical precision, and signal integrity, our solutions have resolved critical challenges such as high-power LED/laser heat dissipation, PCB deformation control, and ultra-high-definition signal transmission (e.g., 4K/8K HDMI 2.1). Each case applies customized copper-layer thickness zoning, embedded thermal structures, and advanced surface finishes, ensuring devices meet rigorous performance and reliability standards. This is a projector copper base PCB case we made before for your reference: [https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/4png-3.png](https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/4png-3.png) Attached is specification for this case: **Parameter** **Specification** Substrate Type Double-Sided Copper Copper Foil Thickness (Light Source Area) 3oz (105μm) Copper Foil Thickness (Signal Area) 1oz (35μm) Insulation Material High-Performance Polypropylene (Thermal Conductivity: 3.0W/m·K) Insulation Thickness 0.2mm Substrate Thickness 2.0mm Heat Dissipation Vias 0.3mm Diameter, 6 Holes/cm², Filled with Thermally Conductive Silicone Embedded Copper Block T-Shaped Copper Block (2.5mm Thickness), 100% Contact Area Surface Finish Immersion Gold (Ni: 5μm, Au: 0.1μm) Key Pad Thickening Localized 0.2μm Au Layer Machining 2mm Screw Hole Keepout Area, 1mm Edge Chamfer ## Why Choose EBest Circuit (Best Technology) as Copper Based PCB Supplier? Reasons why choose us as **[copper based PCB](https://www.bestpcbs.com/blog/2025/08/copper-based-pcb-for-projector%e4%b8%a8best-technology/) **supplier: - 19+ Years Industry Experience: Leverages proven expertise to navigate high power projector. Stringent Quality Certifications (ISO9001, ISO13485, and IATF16949): Ensures product consistency and compliance with global standards. - Custom Thermal Management Solutions: Optimize Thermal Management and extending projector lifespan and reliability. - Competitive Pricing: Affordable pricing without compromising quality, ideal for cost-sensitive projects. - 24 Hours Rapid Prototyping: Accelerates time-to-market, meeting urgent production demands. - Free DFM (Design for Manufacturability) Service: Identifies design flaws early, reducing rework costs and delays. - Strict Quality Control – 100% automated optical inspection (AOI) for bulk orders. - Reliable Supply Chain – Stable material sourcing to avoid delays and ensure consistency. - Full Turnkey Solution –Providing one-stop services from design to delivery, integrating materials, processes and thermal management technologies to ensure high heat dissipation performance and reliability while significantly reducing supply chain complexity and project risks. [https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/3-6.png](https://www.bestpcbs.com/blog/wp-content/uploads/2025/08/3-6.png) ## Our Copper Substrate PCB Capabilities **Items** **Technical Parameters** Product model Copper Based Copper trace thickness 1OZ, 2OZ, 3OZ, 4OZ, up to 10OZ Thermal Conductivity 1.0, 1.5, 2.0, 3.0W/m.K Surface finishing HAL(LF)/ Gold Immersion/ Gold plating/ OSP/ Immersion Tin/ Silver Immersion Soldermask Color White/Black/Green/Blue/Red/Yellow Layers 1L, 2L, 4L, 6L, 8L, double sided, COB Maximum dimension 1,100mm*480mm; 1,500x300mm Minimum dimension 5mm*5mm Minimum Line width/space 0.1mm/0.1mm Warp and twist rate ≤0.75%(thickness:1.6mm, measurement:300mm×300mm) Board Thickness 0.3－4.5mm Die-Punching dimension tolerance ±0.15mm V-cut positioning tolerance ±0.1mm Manufacturing capability 6000m2 Wall Cu thickness 15-25um Alignment tolerance ±0.076mm Minimum diameter of die-punching hole Thickness <=1.0mm:   1.0mm Thickness 1.2-3.0mm: 1.5mm Thickness 4.0mm: 2.0mm Minimum size the square groove/slot/cutout Thickness <=1.0mm:  0.8mm×0.8mm Thickness 1.2-3.0mm:  1.0×1.0mm Thickness 4.0mm:  1.5×1.5mm Outline Tolerance CNC routing：±0.1mm; Die-punching：±0.15mm Minimum diameter of hole 0.3mm; not limit for maximum diameter of hole Surface Finishing Thickness gold plating：Ni 2.5-5um,  Au: 0.025－0.075um immersion gold: Ni 3-6um, Au: 0.025-0.1um HAL(LF): 3-30um V－cut Angle tolerance ±5° V-cut Range 0.3mm-4.5mm Smallest silkscreen height 0.15mm Smallest PAD 0.1mm ## How to Get a Quote for Your Copper Based PCB? **Materials to be submitted:** - Design Documents: Gerber files, BOM, 3D structural drawings (with mechanical dimensions). - Technical Parameters: Copper foil thickness zoning (e.g., 3oz for the light source area), insulation layer thermal conductivity (≥3.0W/m·K), surface treatment requirements. - Special Requirements: Thermal via density, copper block size, high-speed signal impedance control (±10%). - Order Information: Quantity (batch/sample), delivery time. Contact EBest Circuit (Best Technology) now and submit your material list to get a quote: **[sales@bestpcbs.com](mailto:sales@bestpcbs.com)**.