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LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0 — main product image
LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0
LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0
LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0
LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0
LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0
LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0
LG

LG 55UL3J-E 55-inch UHD Digital Signage webOS 6.0

UHD

A 55-inch 4K UHD commercial display powered by webOS 6.0 for impactful digital signage in any orientation.

$1,317.00*$1,330.00Save 0%
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Overview

The LG 55UL3J-E is a 55-inch UHD digital signage display built for commercial environments ranging from retail stores and corporate lobbies to restaurants and wayfinding installations. Its 3,840 × 2,160 resolution ensures that text, images, and video appear sharp and detailed, while 330 nits of typical brightness provides clear visibility in standard indoor lighting conditions. The panel supports both portrait and landscape orientation, allowing integrators to tailor the installation to the physical space and content layout required.

Powered by LG's webOS 6.0 signage platform, the 55UL3J-E can schedule and play content directly from its internal software, reducing reliance on external media players and simplifying deployments. Connectivity includes three HDMI inputs, two USB 2.0 Type-A ports, RS232C in and out for serial control, RJ45 LAN, Wi-Fi, and an audio output. Built-in speakers handle basic audio needs, and LG One:Quick Share compatibility lets presenters wirelessly mirror their screens. Rated for 16/7 operation, the display is designed for standard business-hours signage use across a wide range of commercial settings.

Key Features

Brightness (Typ.): 330 nits

Resolution : ULTRA HD (3,840 x 2,160)

High performance WebOS 6.0

Built-in Speaker

Compatible with LG's One:Quick Share

Specifications

Brand
LG
Model
55UL3J-E
Screen Size
55 inches
Resolution
3,840 x 2,160 (UHD)
Brightness
330 nits (typical)
Operating Hours
16/7
Orientation
Portrait / Landscape
Operating System
webOS 6.0
Connectivity
HDMI (3), RS232C IN/OUT, RJ45 (LAN), USB 2.0 Type-A (2), Audio Out, Wi-Fi
Speaker
Built-in
Wireless Sharing
LG One:Quick Share compatible

Pros & Cons

👍 Pros

  • 4K UHD resolution at 3,840 x 2,160 delivers sharp, detailed signage content on a 55-inch screen
  • webOS 6.0 provides built-in content management without requiring an external media player
  • Supports both portrait and landscape mounting for versatile installation options
  • Three HDMI inputs plus Wi-Fi and LAN allow flexible source connectivity
  • LG One:Quick Share compatibility enables wireless screen sharing from laptops and mobile devices

👎 Cons

  • 330 nits typical brightness may be insufficient for high-ambient-light environments like storefront windows
  • Rated for 16/7 operation rather than 24/7, limiting suitability for always-on deployments
  • No built-in touch capability, requiring an external overlay for interactive kiosk applications
  • Lacks integrated battery or PoE, requiring a dedicated power outlet at every installation point

Frequently Asked Questions

Yes. The display supports both portrait and landscape orientation, giving you flexibility in how you present content in retail, lobbies, or wayfinding applications.
The display is rated for 16/7 operation, meaning it is designed to run up to 16 hours per day, seven days a week.
Yes. Built-in speakers are included, so you can deliver audio content without connecting external sound equipment.
It runs LG's webOS 6.0 signage platform, which supports content scheduling, remote management, and compatibility with LG's One:Quick Share for wireless screen sharing.
The display offers 3 HDMI ports, 2 USB 2.0 Type-A ports, RS232C in and out, RJ45 LAN, Wi-Fi, and an audio output.

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