Industry-Verified Manufacturing Data (2026)

LED Light Bar

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard LED Light Bar used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical LED Light Bar is characterized by the integration of LED Chip and PCB Substrate. In industrial production environments, manufacturers listed on CNFX commonly emphasize LED chips construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A linear array of light-emitting diodes (LEDs) mounted on a printed circuit board (PCB) that serves as the primary light source in a backlight assembly.

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Product Specifications

Technical details and manufacturing context for LED Light Bar

Definition
The LED Light Bar is a critical component within the Backlight Assembly, providing uniform illumination for displays. It consists of multiple LEDs arranged in a linear configuration on a PCB, which is then integrated into the assembly structure. This component directly determines the brightness, color temperature, and energy efficiency of the backlight system.
Working Principle
When electrical current is applied to the LEDs through the PCB circuitry, the semiconductor materials within each LED emit photons (light) through electroluminescence. The light is then diffused and directed by other components in the backlight assembly to create uniform illumination across the display surface.
Common Materials
LED chips, Printed Circuit Board (PCB), Solder, Encapsulation resin
Technical Parameters
  • Length of the LED light bar, typically ranging from 100mm to 1000mm depending on display size (mm) Customizable
Components / BOM
  • LED Chip
    Primary light-emitting element that converts electrical energy to visible light
    Material: Semiconductor materials (gallium arsenide, gallium phosphide, etc.)
  • PCB Substrate
    Provides structural support and electrical connections for the LED chips
    Material: FR-4 fiberglass or aluminum
  • Solder Points
    Electrical and mechanical connection between LED chips and PCB
    Material: Tin-lead or lead-free solder alloy
  • Encapsulation Layer
    Protects LED chips from environmental factors and helps diffuse light
    Material: Silicone or epoxy resin
Engineering Reasoning
2.8-3.5 V forward voltage per LED, 20-150 mA forward current per LED, -40°C to +85°C ambient temperature
LED junction temperature exceeding 125°C, forward current exceeding 150% of rated maximum, reverse voltage exceeding 5 V
Design Rationale: Thermal runaway due to positive temperature coefficient of forward voltage, quantum efficiency degradation at high temperatures, electromigration in bond wires at excessive current densities
Risk Mitigation (FMEA)
Trigger Thermal interface material degradation with thermal conductivity dropping below 3 W/m·K
Mode: LED junction temperature rise exceeding 10°C above design limit, resulting in 50% lumen depreciation within 1000 hours
Strategy: Phase-change thermal interface material with minimum 5 W/m·K conductivity and 0.2 mm bond line thickness
Trigger PCB copper trace electromigration at current densities exceeding 10^6 A/cm²
Mode: Open circuit in series LED chain, causing complete light bar failure
Strategy: 2 oz/ft² copper thickness with 0.5 mm minimum trace width for current paths, plus current-limiting resistors with 1% tolerance

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for LED Light Bar.

LED light bar for LCD backlight assembly high brightness LED linear light array PCB mounted LED light bar electronics custom LED light bar for optical products energy efficient LED light bar manufacturing

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Backlight Assembly
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric (non-pressurized enclosure)
other spec: Humidity: 5-95% RH non-condensing, Input Voltage: 12-24V DC, IP Rating: IP65/IP67 typical
temperature: -40°C to +85°C (operating), -55°C to +100°C (storage)
Media Compatibility
✓ LCD display backlight assemblies ✓ Automotive interior lighting ✓ Commercial signage/illumination panels
Unsuitable: Direct immersion in liquids or high-pressure washdown environments without proper IP68+ sealing
Sizing Data Required
  • Required luminous flux (lumens) or illuminance (lux)
  • Available mounting space dimensions (length, width, height)
  • Power supply voltage and current capacity

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal degradation
Cause: Inadequate heat dissipation leading to LED chip overheating, solder joint failure, and phosphor layer degradation.
Moisture ingress and corrosion
Cause: Seal failure or compromised housing integrity allowing water/condensation to penetrate, causing electrical shorts, corrosion of contacts, and PCB damage.
Maintenance Indicators
  • Flickering or intermittent operation indicating power supply instability or failing components.
  • Visible condensation inside the lens or housing, signaling seal failure and imminent electrical failure.
Engineering Tips
  • Ensure proper thermal management by mounting on heat-dissipating surfaces with adequate airflow, avoiding enclosed spaces without ventilation.
  • Regularly inspect and maintain sealing gaskets/O-rings, and apply dielectric grease to electrical connections to prevent moisture ingress and corrosion.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI/IES LM-79-19 - Approved Method for Electrical and Photometric Measurements of Solid-State Lighting Products CE Marking - Compliance with EU Directives (e.g., Low Voltage Directive 2014/35/EU, RoHS 2011/65/EU)
Manufacturing Precision
  • LED Chip Alignment: +/- 0.5mm
  • Beam Angle Consistency: +/- 5 degrees
Quality Inspection
  • IP Rating Test (Ingress Protection) - e.g., IP67 for dust/water resistance
  • Photometric Testing - Luminous flux, color temperature, and color rendering index verification

Factories Producing LED Light Bar

Verified manufacturers with capability to produce this product in China

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✓ 95% Supplier Capability Match Found

P Project Engineer from Brazil Feb 14, 2026
★★★★★
"The LED Light Bar we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements."
Technical Specifications Verified
S Sourcing Manager from Canada Feb 11, 2026
★★★★★
"Found 35+ suppliers for LED Light Bar on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
P Procurement Specialist from United States Feb 08, 2026
★★★★★
"The technical documentation for this LED Light Bar is very thorough, especially regarding technical reliability."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

8 sourcing managers are analyzing this specification now. Last inquiry for LED Light Bar from Brazil (1h ago).

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Frequently Asked Questions

What are the key advantages of using LED light bars in electronic displays?

LED light bars offer superior energy efficiency, longer lifespan, consistent brightness, and precise light distribution compared to traditional backlighting methods, making them ideal for computer and optical product displays.

How does the encapsulation resin affect LED light bar performance?

The encapsulation resin protects LED chips from moisture, dust, and mechanical damage while enhancing light diffusion and thermal management, ensuring consistent performance and durability in various operating conditions.

Can LED light bars be customized for specific electronic applications?

Yes, LED light bars can be tailored in length, LED density, color temperature, and PCB design to meet exact requirements for computer monitors, medical displays, automotive dashboards, and other optical products.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Computer, Electronic and Optical Product Manufacturing sector.

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