TCL A400 A400U Premium Wallpaper QD-Mini LED TV

The World-leading
QD-Mini LED with Precise Dimming Series

QD-Mini LED
QLED with Mini LED

TCL's QD-Mini LED combines the merits of QLED and OLED technologies, transforming the traditional backlight into lighting that is close to pixel-level precision. It also utilizes the world's leading QLED technology, offering contrast and colour gamut comparable to OLED, while also providing higher peak brightness and a longer lifespan. This represents the future technology of large-screen displays.

448 Precise Dimming Zones
Deeper blacks, higher brightness

Precise Dimming Series refers to Mini LED TV with all-domain halo control technology. The new generation of powerful light-emitting chip, condensed Micro lens and Micro-OD make the light shape of individual zones more perfect, and its halo control ability is several times that of ordinary zones. Combined with the CSOT HVA panel technology with higher native contrast ratio and the world's leading light and shadow control algorithm, Precise Dimming Zones shapes the real light and shadow so that the TV's comprehensive picture quality performance is dramatically improved compared to ordinary TVs, bringing an upscale image experience.

TCL All-domain Halo Control Technology
Mini LED TV: The Halo Eliminator

The TCL all-domain halo control technology covers the entire path from light generation to imaging, integrating high-efficiency light-emitting chips and self-developed lens technology, combined with Micro-OD, light and shadow control algorithms, and TCL's unique self-produced high-end CSOT HVA Panel technology. Through system-level precise control of light, it effectively solves the halo problem and delivers a premium viewing experience.

Powerful Light-emitting Chip
Master light and dark, capture intricate details

Compared with the previous generation of conventional light-emitting chip, A400U's ground-breaking Powerful Light-emitting Chip significantly improves brightness and energy efficiency, reproducing natural bright and dark scenes with clarity.

Condensed Micro Lens
Micro lens technology, macro light mastery

TCL's self-developed condensed micro lens technology precisely controls light direction through its arch bridge dimming design. Its selection of nano-optical materials with greater plasticity form a golden curvature with super light-focusing properties, and precisely controls light point by point, greatly improving the backlight uniformity and halo control capabilities, making the picture details clearer.

Micro-OD
Better image quality, thinner body

With TCL's powerful Mini LED optical technology, A400U delivers an astonishing Micro-OD. It not only offers a slimmer TV unit but also significantly reduces the Mini LED halo issue by working with the condensed micro lens and ultra-high zoning, giving the stars in the night sky a deep, delicate, and sharp look.

Dynamic Lighting Bionic Algorithm
Enriched dark and light details, more realistic image reproduction

Combined with human perception characteristics and picture pixel information, the lighting details are optimized for SDR and HDR signals, while the details and contrast of light and dark scenes are greatly improved. Enjoy more real lighting effects of streaming media resources on TCL TV.

Transient Response
Eliminate ghosting for greater clarity

Transient response can prevent dark shadows, bright spots, and trailing caused by backlight lag in motion picture. It makes the motion picture sharper and enhances your viewing experience.

Bidirectional 23 bit
The more precise the backlight control, the clearer the image details

Bidirectional 23 bit precision control technology can accurately sense the ambient brightness and colour temperature, and finely control the TV brightness and colour temperature to make the picture more vivid and colourful.

CSOT HVA Panel Technology
Up to 7000:1 ultra-high native contrast ratio, an excellent partner for Mini LED TV

CSOT's HVA Panel technology stands at the forefront of the industry. By incorporating polyimide into the liquid crystal molecules, it forms a butterfly-wing-shaped microstructure. Combined with more precise panel design, this innovation enables precise control over the light passing through the liquid crystal layer. As a result, dark areas appear even darker, significantly enhancing the screen's contrast ratio and delivering a more vivid and immersive visual experience.

HDR 2500 nits
Ignite your senses with brightness

Thanks to its peak brightness of 2500nits, the A400U features an ultra-high contrast ratio of 25 million:1 and a higher dynamic range.
With its precise dimming capability, the A400U displays both deep darkness and bright, vivid details.

QLED
A Major Upgrade in Colour Rendering

QLED
More than a billion hues of perfect vivid colour

TCL QLED utilizes Colourful Quantum Crystals, which integrate nanoscale quantum dot materials with organic materials in multiple layers. The high light transmittance film equipped achieves a 10% energy saving for the entire machine by enhancing the light transmittance. Together with backlighting technology, this breakthrough achieves exceptional colour and optical performance. Each frame masterfully renders more than a billion hues of perfect vivid colours, showcasing stunningly vivid colours. Enhanced brightness further illuminates subtle details, offering an immersive and lifelike viewing experience that unveils hidden nuances.

High-Transmittance Filter
More Light Transmission. More Vibrant Colours

The screen of the A400U is equipped with a new-generation high light transmittance film, which greatly enhances the display purity of vivid colours while maintaining high light transmittance. This significantly enhanced Colour Stability and Improved Light Transmittance. High light transmittance film improves the colour rendering effect of the A400U, resulting in more stunning colour performance.

Colourful Quantum Crystal
Colour reimagined. Brilliance unleashed

TCL QLED introduces the next-generation Colourful Quantum Crystal, featuring a more stable multi-layer nano-protection and precision crafting.
This innovation delivers an extraordinary, long-lasting colour experience with exceptional brilliance and depth.

93% DCI-P3 Ultra-high Colour Gamut

Utilizing Quantum Dot technology, it unveils over 1,000,000,000 hues of vibrant and precise colours, providing up to 93% colour gamut according to DCI-P3 standard. It brings digital environments to life in ways previously unimaginable.

Bionic colour optimization technology

Optimizing colour based on human preferences, TCL intelligently analyzes image content and enhances scene colours with remarkable precision, boosting realism and immersion. At the same time, it restores and protects natural skin tones, delivering vibrant, true-to-life visuals.

Pioneer in quantum dot technology

TCL remains at the forefront of innovation, investing heavily in QLED technology with a total of 2913 patents. With a dedicated team of nearly 100 experts and an international Quantum Dot Lab, TCL continues to push the boundaries of display technology.

Flat-thin Design
A Blade of Technology. A Canvas of Art

Flat-thin Design

39.9mm Ultra-Slim

TCL A400U's 39.9mm integrated flat & slim design, plus nearly seamless 3mm-gap wall mounting, fuses art and technology to blend effortlessly into any home.

Star Ring Cooling System

Stronger Performance. Cooler System

The Star Ring Cooling System adopts aviation-grade heat-conducting materials and is paired with a bionic fin radiator structure, which greatly improves heat dissipation efficiency. It also optimizes the design of heat dissipation air ducts to reduce heat accumulation. Among products in the same class, the spatial temperature rise is reduced by 3℃~5℃.

Light Home Aesthetics
Technology with Warmth

TCL aims to advocate the future concept of 【Light Living · Chic Life Style】, convey to users a comfortable and natural life intention, and move towards a warmer and more considerate direction.

Versatile Home decoration
Match your home decor, adapt to your preferences

Fill the home with a warm, flowing sentiment.

HVA Pro Panel
Ultra-high Contrast. Ultra-low Reflection

HVA Pro Panel

5x contrast enhancement, the image is richer in details

The liquid crystal display features nanoscale bionic technology, which forms a butterfly-wing microstructure by adding polyimide to the liquid crystal molecules. This allows for precise control over the amount of light passing through the liquid crystal layer and a notable improvement in contrast. It also comes with a nanoscale low-reflective film that reduces reflection on the display and presents a more crystal-like screen with sharper details.

Art for Life
Beyond Screen. Beyond Imagination

Art Gallery

Bring the world's art galleries home

You can display the artworks even when the TV is off. The A400U would turn your home into a personal gallery with hundreds of famous artistic paintings across the centuries.

Digital Art
Explore your styles

TCL A400U Series has more than 100,000 pre-generated AI artworks from classical style to impressionism. Just tap on the style and theme, and you get to personalize your screen to your style in seconds.

Ambient Mode
Seek your peace of mind

When you feel like a getaway, the ambient mode can transform your space to anywhere. A400U Series features built-in the beautiful scene and sound to create a peaceful and comfortable atmosphere for you. With options like crackling campfires, gentle rain sounds, and lapping waves blending together, it feels as if you're truly there.

Art Memory

Conserve memories in your personal photo gallery

Photo Gallery
Upload your photos to your personal gallery, preserving every cherished moment.

Digital Frames
For your beloved creations, lightly sketch an electronic picture frame. You can adjust margins to your style.

Customized Carousel
DIY screen saver slideshow, customize time, content, and intervals as you like, letting art flow endlessly on the screen.

288Hz VRR Game Accelerator
Certified for Glory. Engineered for Speed

288Hz VRR Game Accelerator
Born to be proud

The A400U leverages VRR technology to deliver dual-mode ultra-high refresh rates: native 4K at 144Hz and 1080P at 288Hz. Run, race, and shoot your way to a speedy victory with less stuttering, tearing, or blurring.

Game Master
Play like a pro

Experience next-level gaming with the elevating technology in action. Unlock advanced display and audio technology, try smoother streaming with TCL Game Master.

Game Bar
Adaptive game screen for three major consoles
Choose your preferred picture mode from the original, FPV, and RPG in Game Bar, and indulge yourself in an immersive gaming experience.

AMD FreeSync Premium Pro
No tearing. No stuttering. Just gaming
The AMD FreeSync technology promises seamless, artifact-free game play at almost any frame rate, putting an end to choppy game play and broken frames. It is regarded as the next breakthrough in PC and console gaming.

Superwide Gameview
With the 21:9 and 32:9 superwide screen ratio, you can get up to twice the field of view in the game, making you a hardcore gamer ready for any unexpected situation.

ALLM
The Low Latency Mode automatically reduces response time. You are always ahead of your enemies.

HDMI 2.1
For gamers, a responsive TV is just as important as one with good pictures. With HDMI 2.1, you'll experience lower latency and the better picture settings for gaming automatically.

Aiming Aid
From first blood to legendary, Aiming Aid helps you quickly and effortlessly aim at your target. Find Aiming Aid in the game bar and activate it!

Next-Gen AI Processing
Beyond Fast. Purely Smart.

TCL AI

A wisdom core that enhances multi-scenario experiences

TCL AI has developed a robust underlying hardware capability through independent research and development. It has created a quantum supercomputing platform that integrates a variety of self-developed professional models and has built an industry-leading Mariana database. This enables continuous deep learning and evolution of the TCL AI model. In addition, TCL AI deeply integrates many AI capabilities and has a large number of powerful scenario-based intelligent agents. It provides you with a smarter and more convenient audio-visual entertainment experience across four dimensions: AI image quality, AI sound quality, AI interaction, and AI content generation.

TSR AiPQ Processor

Computational Image Quality

The TSR AiPQ Processor is a highly intelligent chip that boasts powerful AI capabilities. It integrates TCL's proprietary image -tuning algorithms and is equipped with advanced intelligent perception capabilities that enable it to deliver pixel-level optimization for visuals. Combined with TCL AI model, it ensures every frame bursts with vibrant dynamism, layered depth, and natural clarity for lifelike realism.

ONKYO 2.0 Hi-Fi System
The Preferred Audio Brand for Enthusiasts

Lateral wide sound field acoustic design

Sound Moves with the Picture

Side-firing mid-field speakers, sound field widened by 35%, port design achieves audio-visual synchronization.

ONKYO 2.0 Hi-Fi System

Defining the standard for home theater

Onkyo is a global high-end audio brand with 80+ years of home theater expertise, 7 times defined the world's home theater standards. A400U can bring you a more immersive experience.

More Fun With TCL

Google TV
Entertainment you love. With a little help from Google.

Browse 400,000+ movies and TV episodes, from across your streaming services - in one place, and organized by the genres and topics that interest you the most.