LED Display Module

High-quality products tailored for wholesalers and distributors worldwide.

LM3.91

Price varies depending on material, logo, quantity and customization requirements.

SKU LED-Display-Module-03
Service OEM / ODM
Quality You Can Trust
Flexible & Scalable Solutions
Customizable Product Options
Comprehensive Specifications
Your Reliable Business Partner
Category: LED Display Module
Factory direct pricing. We ship globally.

Introduction

LM3.91 LED Module

The size of LM3.91 LED Module is 250mm x 250mm. It has excellent color uniformity and high refresh rate, reaching 65536 pixel/㎡.

This led module use SMD LED screen panel, is suitable for indoor and outdoor use, and could bring you a high-quality LED module experience!

Brand Lamp Beads

Using Kinglight, Nationstar brand lamp beads Life span Longer, high continuous brightness, high contras The light mixing effect is good, safer and more stable

Protective Fence

The pin header guard is used to protect the pin header and prevent the needle row change.

It is more conducive to easy installation, and prevent pin headers from being squeezed during transportation deformed.

Terminal

Prevent the copper wire from leaking during assembly, and the high terminal can effectively avoid the short circuit of the positive and negative poles.

Signal Cable

Our signal cable with buckle design to avoid loose during transportation and installation,especially after 1-2 years outside work.

LED Display Module Aging & Testing

The aging test of the LED module refers to running the LED module for a long time to simulate actual use conditions to detect its performance and stability.

Typically, LED modules are run continuously for hours or days, or even longer. So that to ensure that the performance and brightness of the LEDs do not degrade after prolonged use.

During the aging test, we monitor the brightness, color fidelity, uniformity, and other parameters of the LED, evaluating the quality and reliability of the LED module based on the test results.

The aging of LED display is divided into white balance aging (2×24 hours) and video aging (24 hours). Totally 72 hours before packing.

Aging test process of led display screen:

1) Check the led display module to install all correct.

2) whether there is a short circuit or not.

3) Check whether the module is flat and neat.

4) Check whether the appearance is intact or not.

5) Use the online led control system to light up.

After the aging test,, we conduct parameter inspections in the quality control group, including white balance, red, green, blue, grayscale gradient, video effects and text effects, etc. After 72 hours of aging testing, we will promptly report any problems and contact the engineering department, then to replace or repair the damaged LEDs. Before packaging, we ensure that all components can operate stably to ensure product quality and reliability.

ltem Led Module
Unit panel Dimension 250*250mm
Pixel pitch 3.91mm
LED specification 1R1G1B
Pixel rseolution 64*64
Pixel configuration SMD2121
Pixel density 65536/m
Panel weight 0.63kg

We are a professional manufacturer and supplier, dedicated to maintaining consistent quality and establishing long-term partnerships with clients worldwide.

Our mission is to provide high-quality products and reliable service. We are committed to offering the following advantages:

  • Stable production system ensuring consistent quality, dependable supply, and standardized manufacturing management;
  • Strict quality control covering material selection, processing, surface finishing, and final packaging;
  • Variety of products and specifications to meet diverse project requirements and application scenarios;
  • OEM & customization support based on drawings, samples, or specific technical requirements;
  • Flexible packaging solutions to ensure safe handling and transportation of products;
  • Continuous improvement in products and services to better support customers in different markets.

If you are interested in our products, please feel free to contact us. We look forward to establishing long-term and mutually beneficial cooperation with you.

Copyright © 2026 China Loong Display Co., Ltd. All rights reserved.
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LM3.91

SKU: LED-Display-Module-03

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