LG 55NU840B6LA 55″ NANO 4K AI Smart TV (Black)

LG 55NU840B6LA 55″ NANO 4K AI Smart TV is an advanced, large-format home entertainment display designed to deliver brilliant color accuracy, refined clarity, and next-generation smart AI capabilities. Crafted with a Linear Flow Design featuring ultra-thin bezels and a sleek dark finish, it serves as an elegant centerpiece for modern living rooms, master suites, and dedicated media rooms.

Powered by LG’s Alpha 7 AI Processor 4K Gen9 paired with Nano Detail Enhancer technology, the 55NU840B6LA refines contrast, textures, and depth at a nano level to produce true 4K visual realism. Running on the latest webOS smart platform with AI Hub integration—featuring multi-AI search with Google Gemini and Microsoft Copilot—it offers personalized content recommendations, robust data security protected by LG Shield, and spatial Virtual Surround Sound processing for cinema-like home audio.

Key Features

• 55-Inch NANO 4K Display – Ultra-high-definition 4K panel (3840 x 2160) offering vibrant NanoCell color purity and fine contrast across a large viewing canvas.
• Alpha 7 AI Processor 4K Gen9 & Nano Detail Enhancer – Intelligent AI processing analyzes image frames in real-time to optimize contrast, texture, and three-dimensional depth.
• Next-Gen webOS & AI Hub – Intuitive smart platform featuring AI Concierge, personalized user home pages, and multi-AI assistant search (Gemini & Copilot).
• HDR10 Pro & FILMMAKER MODE™ – Delivers optimized dynamic tone mapping for brighter highlights, deeper shadows, and authentic studio-intended picture quality.
• AI Sound & Virtual Surround Processing – Multi-channel virtual spatial audio processing upmixes 2-channel sound to surround your room with dynamic audio.
• Linear Flow Modern Design – Minimalist borderless frame maximizes active display area to seamlessly integrate into modern room interiors.
• Complete Smart & Gaming Connectivity – Features built-in Wi-Fi, Bluetooth, HDMI (with eARC & ALLM), USB, VRR support for low-latency gaming, and data security powered by LG Shield.

Specifications

Feature	Specification
Model	55NU840B6LA
Screen Size	55 Inches
Display Type	NANO 4K UHD LED
Resolution	4K Ultra HD (3840 x 2160)
Picture Processor	Alpha 7 AI Processor 4K Gen9
HDR Format	HDR10 Pro, HLG
Operating System	LG webOS (with AI Hub & LG Shield)
Smart AI Support	Voice Control, Multi-AI Assistant Search (Gemini & Copilot)
Audio Output	20 Watts (Virtual Multi-Channel AI Sound)
Wireless Connectivity	Wi-Fi, Bluetooth, Screen Share / Apple AirPlay
Physical Ports	3 x HDMI (eARC / ALLM), USB, LAN (Ethernet), Optical Out
Digital Tuner	Built-in Receiver (DVB-T2/S2)
Dimensions (WxDxH)	Approx. 1226.8 x 70.8 x 715 mm (Without Stand)

Common FAQs

Is the LG 55NU840B6LA a native 4K TV?

Yes, it features a native 4K Ultra HD resolution (3840 x 2160 pixels), providing four times the detail and pixel density of standard 1080p Full HD displays.

How does the Alpha 7 AI Processor 4K Gen9 improve picture quality?

The Alpha 7 AI Processor uses advanced algorithms to perform nano-scale image optimizations, reducing video noise, refining shadow contrast, and upscaling lower-resolution content to near-native 4K quality.

What smart AI features are integrated into this model?

The 55NU840B6LA includes LG’s AI Hub, featuring voice-controlled search powered by multi-AI models (Google Gemini and Microsoft Copilot), tailored recommendations via AI Concierge, and personalized user home pages.

Is this 55-inch TV suitable for gaming?

Yes, it comes equipped with low-latency gaming features, including Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) support, and HDMI eARC for high-performance gaming console connections.

Can the LG 55NU840B6LA be wall-mounted?

Yes, the rear panel features standard VESA wall-mount screw patterns, making it fully compatible with standard fixed, tilt, or full-motion 55-inch wall mount brackets.