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1.68 Inch Round LED Backlight Module Circular Gauge 400 Cd/M2 Round Meter Backlight

Product Specification
Place of Origin: CHINA
Brand Name: Weishibo
Certification: IMQ/ROHS
Model Number: Customizable
Minimum Order Quantity: 500
Price: 0.1-0.5USD
Payment Terms: L/C,D/A,D/P
Supply Ability: 500K per month
Product Details
Highlight:

1.68 Inch backlight module

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400 Cd/M2 backlight module

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Round back light module

Name: 1.68 Inch Round Instrumentation LED Backlight Module
Material: PVC/PMMA
Optical Film: Diffuser Film, Upper And Lower Brightness Enhancement Film (BEF), Reflective Film, Light-shielding Adhesive
LED Bead Packaging: SMD LEDs (0603/0805/2835/3014, Etc.), Edge-lit / Direct Backlight Strips
Light-Emitting Mode: Edge-lit Backlight, Direct-lit Backlight
Color Temperature: Warm White (2700K-3500K), Pure White (4000K-4500K), Cool White (6000K-7000K), Colored Light (Red / Green / Blue / Multicolor)
Brightness: Cd/㎡ (nit), The Standard Brightness Ranges From 300 To 1000 Cd/㎡, And High-brightness Models Can Reach Over 1500 Cd/㎡
Uniformity: ≥80% (industry Standard), High Uniformity Models ≥90%, No Dark Areas, Light Spots Or Shadows
Perspective: Full View, Front View, Narrow View
Emission Color: Monochrome, Two-color, RGB Full-color
Operating Voltage: DC 3V/5V/12V/24V (5V And 12V Are The Most Commonly Used)
Operating Current: Single-channel / Full-board Rated Current (mA/A)
Power: Overall Board Power Consumption (W)
Wiring Method: Pad Routing, FPC Flexible Cable, Terminal Connection, Direct Wire Outlet
Light Guide Process: Screen Printing, Laser Dot Marking And Etching Light Guide
Assembly Structure: Integrated Patch, Split Module, Fixed With Iron Frame / Plastic Frame
Waterproof Rating: IP30 (Standard Indoor), IP54/IP65 (Outdoor / Humid Environments)
Surface Treatment: Matte, High-transparency, Scratch-resistant, Anti-glare
Operating Temperature: -20℃ ~ +60℃ (Standard), Wide Temperature Version: -30℃ ~ +70℃
Storage Temperature: -30℃ ~ +70℃
Service Life: Regular Version: Over 50000H, Highlight Version: Over 30000H
Border: Borderless, Narrow Bezel, Wide Bezel
Light Shielding: Built-in Vinyl Light Blocking And Fully Edged Light Blocking On All Sides
Accessories: Adhesive Tape (3M Adhesive), Double-sided Tape, Fixing Foam, Thermal Pad
Applicable Panels: Compatible With LCD Screens, Segment Code Screens, Dot-matrix Screens And Touch Screens
Panel Type: Light Guide Plate (LGP), Uniform Light Plate, Backlight Module (including Light Guide, Diffusion, Brightness Enhancement And Light Bar)
Product Description

1.68 Inch Round Instrumentation LED Backlight Module | 400 cd/m² with Terminal Connector

 
Product Overview
 
 
This 1.68-inch circular LED backlight module is purpose-built for round gauge and knob-style display applications, delivering uniform, consistent illumination for compact circular LCD panels. With an optimized brightness of 400 cd/m², it ensures crisp, glare-free readability in indoor and low ambient light environments. The direct terminal PIN output enables quick, error-free installation, while its ultra-thin 1.9mm profile and precision circular dimensions (58.00×56.70×1.9mm outer size, 42.98×42.98mm viewing area) ensure seamless compatibility with standard 1.68-inch round meter and gauge LCD panels. Ideal for automotive dashboard indicators, smart home knobs, industrial circular meters, and compact control panel displays.
Key Specifications

Diagonal Size: 1.68 Inches (Round)

Overall Dimensions: 58.00 × 56.70 × 1.9 mm

Viewing Area (VA): 42.98 × 42.98 mm (Circular)

Brightness: 400 cd/m² (Optimized for Indoor Instrumentation)

Connection: Direct Terminal PIN Output

Light Source: Side-Emitting LED with precision-engineered circular light guide plate (LGP)

Typical Applications: Automotive dashboard indicators, smart home control knobs, industrial circular meters, compact control panel displays, and consumer electronics indicators

 
Core Features & Benefits
 
 
✅ Specialized Circular Design for Round Gauges
 
Engineered exclusively for circular display applications, this backlight provides perfectly symmetrical illumination across the entire 42.98mm diameter viewing area, eliminating edge shadowing and ensuring uniform brightness for round meter readouts.
✅ Optimized 400 cd/m² Brightness
 
Calibrated to deliver a comfortable 400 cd/m² luminance, this backlight provides clear, legible readouts without causing eye strain during prolonged use. It is perfectly suited for indoor industrial and consumer electronics environments.
✅ Ultra-Thin 1.9mm Profile
 
At just 1.9mm thick, this module is designed to fit into the most space-constrained circular gauge enclosures. Its compact form factor allows for seamless integration into modern, slimline meter and knob designs without compromising performance.
✅ Plug-and-Play Terminal Connector
 
The pre-wired terminal connector enables quick, tool-free installation. Clearly marked wiring eliminates polarity confusion, reducing assembly errors and streamlining mass production processes for instrumentation manufacturers.

✅ Low-Power, Long-Lasting Performance

 

Featuring high-efficiency side-emitting LEDs, this backlight delivers exceptional energy efficiency, making it ideal for battery-powered devices. The robust construction ensures long-term reliability and consistent performance over thousands of hours of continuous operation.

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