Products Description

The Bottom Lighting LED Backlight Module for LCD Displays is a high-performance solution designed for various LCD applications, offering excellent brightness uniformity and low power consumption. As a professional LED backlight module manufacturer, Bolong LCD provides reliable, energy-efficient, and customizable backlight solutions for global OEM and ODM clients.The bottom lighting design allows even light distribution across the display, significantly improving LCD display visibility and brightness consistency, making it perfect for industrial, home appliance, and smart device applications.
Key Features
Bottom lighting (direct‑lit) optical design – LEDs arranged in a matrix behind the LCD; no light guide plate means no yellowing, no warping, and lifetime >80,000 hours.
Ultra‑high brightness – 1500 to 5000+ nits (custom), perfect for sunlight‑readable outdoor applications.
Superior uniformity >90% across entire active area – even on 55″ panels.
Large size capability – From 7″ to 55″ diagonal, or custom rectangular shapes.
Excellent heat dissipation – Bottom lighting allows direct mounting to metal chassis; LEDs run cooler, extending lifetime.
Custom LED pitch and lens design – Optimized for your specific LCD transmissivity and thickness requirements.
Local dimming ready – We can design multiple dimming zones for HDR applications.






Parameter Specification
| Parameter | Capability |
|---|---|
| Display Size | 7″ to 55″ (larger on request) |
| Brightness | 1500 – 5000+ nits |
| Uniformity | >90% (center to edge) |
| LED Configuration | Matrix array, custom pitch (10mm – 50mm) |
| Thickness | 10mm – 35mm (depends on mixing distance) |
| Lifetime | >80,000 hours @ 85% brightness |
| Input Voltage | 12V / 24V / 48V (custom) |
| Dimming | PWM / analog / local dimming zones |

Manufacturing strengths
In‑house optical simulation & tooling – We design diffuser plates and reflective cavities using ray‑tracing software.
Direct factory control – No third‑party backlight supplier; faster prototyping and lower MOQ.
Custom driver board design – Constant‑current drivers with thermal foldback and fault detection.
Integrated with our LCDs – We assemble the bottom lighting backlight onto your TFT or monochrome LCD.
ISO9001 & RoHS – Full quality control from LED binning to optical test.

Our factory






Certifications and Awards








Our Service
Pre-sales
24-hour response to inquiries, free 2D/3D drawings, compatibility verification, sample application
In-sales
Real-time production updates, third-party inspection accepted, full export documents
After-sales
Fast replacement for DOA. Technical Support. Spare Parts Supply. Overseas Service
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