LOGOTIPO UGPCB
Visão geral do produto: A High-Reliability PCB Solution for LCD Display Driving
UGPCB introduces theLCD Liquid Crystal Display PCB Circuit Board (Modelo: UGPCB-LCD-001), a high-performance2-layer rigid FR-4 printed circuit board engineered specifically for liquid crystal display driving applications. This product uses Kingboard KB6165F high-end copper-clad laminate as the base material, with a board thickness of 1.6 mm and 1 oz copper foil (aproximadamente 35 μm). The surface finish employs theCONCORDAR (Electroless Nickel/Immersion Gold) process at 2U” . The board measures 147.2 × 65 milímetros, with a minimum hole diameter of 0.22 mm and minimum line width/spacing of 0.3 mm/0.27 mm.
EsseLCD display PCB serves as the critical circuit carrier that connects display driver chips to liquid crystal glass panels. It finds extensive applications in small to medium-sized LCD display modules, industrial control panel displays, automotive infotainment system displays, and smart home human-machine interaction interfaces.
Definição do Produto: What Is an LCD Liquid Crystal Display PCB?
An LCD Liquid Crystal Display PCB (Placa de circuito impresso) is a specialized circuit board designed for liquid crystal display driving systems. It performs three core functions: driving signal transmission, distribuição de energia, and timing control signal routing. Unlike standard PCB circuit boards, um LCD display PCB demands tighter tolerances in line width precision, controle de impedância, and surface flatness.
This product belongs to therigid double-sided PCB category with 2 camadas (2eu). It uses FR-4 grade flame-retardant material (UL 94 V-0 Avaliado) and supports both SMT (Tecnologia de montagem em superfície) and through-hole component hybrid assembly processes. The board meets IPC-6012 Class 2 requisitos de desempenho, making it suitable for industrial electronics and consumer electronics applications.
Design Specifications: Critical Parameters for LCD PCB Engineering
Substrate Material: The KB6165F Advantage
This product uses Kingboard KB6165F copper-clad laminate, which delivers the following key performance characteristics:
- Temperatura de transição vítrea (Tg): ≥150°C, ensuring dimensional stability during lead-free reflow soldering processes
- Temperatura de decomposição térmica (Td): 325°C, providing excellent thermal reliability
- Classificação inflamabilidade: UL 94 V-0, with flame self-extinguishing within 10 seconds in vertical burn tests
- CTE (Coeficiente de Expansão Térmica): 12–15 ppm/°C in X-Y direction, 40–230 ppm/°C in Z direction, offering good thermal matching with LCD driver ICs
- CAF (Conductive Anodic Filament) Resistance: Excellent anti-CAF performance ensuring long-term reliability
- Lead-Free Compatible: Meets RoHS environmental requirements
According to IPC-2221 design standards, materials with Tg ≥150°C are suitable for lead-free assembly processes, capable of maintaining structural integrity under reflow soldering peak temperatures reaching 245–260°C.
Layer Count and Stack-up Design
The product features 2 camadas (2eu) with a standard 1.6 espessura da placa mm. Per IPC-2221, 1.6 mm represents the most commonly used thickness specification for rigid PCB, balancing mechanical strength with assembly convenience.
Line Width and Spacing Design
The minimum line width of 0.3 mm and minimum line spacing of 0.27 mm are carefully selected parameters forLCD driver PCB integridade do sinal. Under IPC-2221 standards, the minimum spacing requirement for conventional voltage (≤30V) digital signal traces is 0.1 milímetros (4 mil). This product’s 0.27 milímetros (aproximadamente 10.6 mil) spacing far exceeds the IPC minimum requirement, providing ample margin for signal quality.
Design Calculation Reference (based on IPC-2221 outer layer conductor current-carrying capacity simplified formula):
Outer layer trace current-carrying capacity ≈ k × ΔT^0.448 × W^0.725 × T^0.725
Where k = 0.048 (for outer layer). At a 10°C temperature rise, um 0.3 mm trace with 1 oz copper thickness delivers a theoretical current-carrying capacity of approximately 1.2–1.5 A—sufficient for the power and signal trace requirements of conventional LCD driver boards.
Diâmetro mínimo do furo
The minimum hole diameter of 0.22 milímetros (aproximadamente 8.7 mil) falls within the precision drilling category. Under IPC-6012, the standard drilled hole diameter tolerance is ±0.08 mm (approximately ±3 mil) . Para 0.22 mm micro-vias, manufacturing tolerances are typically controlled within ±0.05 mm.
Acabamento superficial: ENIG at 2U”
OCONCORDAR (Electroless Nickel/Immersion Gold) surface finish with 2U” gold thickness (aproximadamente 0.05 μm) complies with IPC-4552 requirements. IPC-4552 Revision A (issued in 2017) specifies gold deposit thickness of 0.04 μm to 0.10 μm (1.6 μin to 4.0 μin) and nickel thickness of 3 μm to 6 μm.
ENIG Surface Finish Advantages:
- Excellent solderability supporting multiple reflow cycles
- Strong wire bonding capability
- Superior oxidation and corrosion resistance
- Flat surface suitable for fine-pitch component mounting
- Extended shelf life
Princípio Operacional: Signal Transmission Mechanisms of the LCD Display PCB
OLCD liquid crystal display PCB operates on two core functions: transmissão de sinal edistribuição de energia.
1. Display Driver Signal Transmission: Display data from the main controller chip (MCU/SoC) travels through thePlaca de circuito PCB via microstrip or stripline traces to the LCD driver IC. The driver IC converts digital signals into analog grayscale voltages, which are then output through thePCB‘s fine traces to the ITO electrodes on the liquid crystal glass panel, controlling the twist angle of liquid crystal molecules to produce the displayed image.
2. Timing Control Signal Routing: OLCD display PCB carries critical timing signals including VSYNC (Vertical Sync), HSYNC (Horizontal Sync), DCLK (Pixel Clock), and DE (Data Enable). The transmission delay and impedance matching of these signals directly affect display quality.
3. Power Management Distribution: OLCD circuit board converts the input power (tipicamente 3.3 V or 5 V) through DC-DC conversion circuits to generate the multiple voltage levels required by the LCD panel, including VGH (gate-on voltage, tipicamente +15 V to +30 V), VGL (gate-off voltage, typically −5 V to −15 V), and AVDD (analog power voltage).
Classificação do Produto: LCD PCB Categories
LCD liquid crystal display PCBs can be classified along the following dimensions:
Por contagem de camadas
- Single-sided boards: Used for simple segment-code LCD displays
- Double-sided boards (2eu): This product’s category, used for small to medium-sized TFT-LCD display drivers
- Multilayer boards (4L and above): Used for high-resolution, large-format display modules
Por acabamento superficial
- ENIG boards: This product’s category, offering the best overall performance
- OSP boards: Lower cost, suitable for short-lifecycle consumer electronics
- HASL boards: Suitable for LCD driver boards with wider pin pitches
Por aplicação
- Consumer Electronics LCD PCBs: Smartphone secondary displays, smartwatch displays, e-reader screens
- Industrial Control LCD PCBs: Industrial HMI, instrument panel displays, CNC operation panel display drivers
- Automotive LCD PCBs: In-vehicle infotainment systems, digital instrument clusters, HUD display control boards
- Medical Device LCD PCBs: Patient monitors, ultrasound diagnostic equipment, medical imaging system display driver boards
Core Performance Specifications
| Parâmetro | Especificação | Reference Standard |
|---|---|---|
| Laminate Material | KB6165F (Kingboard) | - |
| Laminate Type | FR-4 Glass Fabric Copper-Clad Laminate | UL 94 V-0 |
| Contagem de camadas | 2 camadas (2eu) | - |
| Espessura da placa | 1.6 milímetros | IPC-2221 |
| Espessura de cobre da camada externa | 1 onças (35 μm) | IPC-6012 Class 2 |
| Acabamento superficial | APENAS 2U” (0.05 μm Au) | IPC-4552 |
| Nickel Layer Thickness | 3–6 μm (underlayer) | IPC-4552 Rev A |
| Diâmetro mínimo do furo | 0.22 milímetros | IPC-6012 |
| Minimum Line Width | 0.3 milímetros | IPC-2221 |
| Minimum Line Spacing | 0.27 milímetros | IPC-2221 |
| Board Dimensions | 147.2 × 65 milímetros | - |
| Tg (Temperatura de transição vítrea) | ≥150°C | - |
| Td (Temperatura de decomposição térmica) | 325°C | - |
| CTE (X-Y Direction) | 12–15 ppm/°C | - |
| Classificação inflamabilidade | UL 94 V-0 | UL 94 |
| Resistência ao arco | ≥60 seconds | - |
| Resistividade da superfície | ≥2.6 × 10⁸ MΩ | - |
| Resistividade de volume | ≥3.4 × 10⁹ MΩ·cm | - |
Product Structure Analysis
OLCD liquid crystal display PCB structure comprises the following layers from outside to inside:
1. Outer Layer – ENIG Surface Finish: Gold layer at 2U” (aproximadamente 0.05 μm) protects the underlying nickel layer from oxidation. The bottom nickel layer at 3–6 μm serves as a diffusion barrier between copper and gold.
2. Copper Foil Layer: 1 onças (aproximadamente 35 μm) electrodeposited copper foil, etched to form the circuit pattern.
3. Dielectric Layer: FR-4 grade glass fabric impregnated with epoxy resin, aproximadamente 0.7 mm thick (single layer), providing electrical insulation and mechanical support.
4. Copper Foil Layer: Bottom layer 1 oz copper forming the bottom circuit pattern.
5. Outer Layer – ENIG Surface Finish: Symmetrical ENIG treatment matching the top layer.
Recursos do produto: Why Choose UGPCB’s LCD Display PCB?
① High-Precision Manufacturing: Minimum hole diameter of 0.22 mm and minimum line width/spacing of 0.3 mm/0.27 mm support the routing requirements of high-density LCD driver boards.
② Premium Substrate Materials: Kingboard KB6165F high-end FR-4 material with Tg ≥150°C and UL 94 V-0 flammability rating ensures lead-free process compatibility and long-term reliability.
③ Standardized Surface Finish: APENAS 2U” process complies with IPC-4552, delivering excellent solderability, oxidation resistance, and extended shelf life.
④ Rigorous Quality Control: Products undergo full-process quality control per IPC-6012 Class 2 padrões, covering hole diameter tolerance (±0.08 mm), hole copper thickness (≥20 μm), solder mask integrity, and electrical testing.
⑤ LCD-Optimized Design: Controle de impedância, integridade do sinal, and power integrity are optimized specifically for liquid crystal display driving applications.
Processo de fabricação: From Raw Material to Finished Product
UGPCB follows a rigorous standard manufacturing process forLCD display PCBs:
1. Material Cutting →2. Inner Layer Pattern Transfer (drill positioning and registration marks) →3. Perfuração (minimum hole diameter 0.22 milímetros ± 0.08 milímetros) →4. Electroless Copper Deposition/Electroplating (metalização de furo, hole copper thickness ≥20 μm) →5. Outer Layer Pattern Transfer (Largura da linha 0.3 milímetros / espaçamento 0.27 milímetros) →6. Pattern Plating (copper build-up to 1 onças) →7. Gravura →8. Solder Mask Printing →9. ENIG Surface Finish (CONCORDAR, gold thickness 2U”) →10. Profiling (dimensions 147.2 × 65 milímetros) →11. Teste elétrico (100% electrical test) →12. Inspeção Final (AOI + visual inspection) →13. Packaging and Shipping
Cenários de aplicação típicos
📱 Consumer Electronics: Smartphone secondary displays, smartwatch displays, e-reader screen driver PCBs.
🏭 Industrial Control: PLC human-machine interfaces (HMI), industrial instrument displays, CNC operation panel display driver boards.
🚗 Automotive Electronics: In-vehicle infotainment systems, digital instrument clusters, head-up display (HUD) display control PCBs.
🏥 Medical Devices: Patient monitors, ultrasound diagnostic equipment, medical imaging system display driver circuit boards.
🏠 Smart Home: Smart access control system displays, smart appliance control panels, building intercom system display module PCBs.
Por que escolher UGPCB?
UGPCB brings years of LCD display PCB manufacturing experience to every project. We use premium raw materials like Kingboard KB6165F, strictly enforce IPC-6012 Class 2 padrões de qualidade, and operate high-precision drilling and circuit patterning equipment. Whether you need LCD Prototipagem de PCB or volume production, UGPCB delivers high-precision, high-reliability product solutions.
📞 Get Your LCD Display PCB Solution Today
UGPCB's LCD liquid crystal display PCBs have been successfully deployed in numerous industrial, automotivo, and consumer electronics display projects. Whether you need LCD PCB prototyping for design validation or PCBA turnkey assembly services, UGPCB provides full-process support from PCB fabrication to PCBA Montagem SMT.
Contact UGPCB’s professional team today for your custom LCD display PCB solution!
📧 Email: [info@ugpcb.com]
📞 Phone: [+86-755-XXXXXXXX]
🌐 Website: [www.ugpcb.com]
Data Source Attribution
The technical standards and data cited in this document are derived from the following authoritative sources:
- IPC-6012 -Qualification and Performance Specification for Rigid Printed Boards – Defines PCB hole diameter tolerances (standard ±0.08 mm), hole copper thickness (Aula 2 ≥20 μm), and performance class requirements
- IPC-2221 -Generic Standard on Printed Board Design – Specifies line width/spacing design requirements and current-carrying capacity calculation formulas
- IPC-4552 Revision A (issued 2017) -Performance Specification for Electroless Nickel/Immersion Gold (CONCORDAR) Plating for Printed Boards – Specifies ENIG deposit thickness requirements: nickel 3–6 μm, gold 0.04–0.10 μm
- UL 94 -Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances – V-0 rating requires flame self-extinguishing within 10 segundos
- Kingboard KB6165F Product Datasheet – Substrate technical parameters (Tg ≥150°C, Td 325°C, UL 94 V-0, etc.)
- GB/T 4677 -Test Methods for Printed Boards – Used in conjunction with IPC standards as inspection references
