TCL 98A400U 98" Premium QD-Mini LED 4K Smart TV

The TCL 98A400U 98-inch Premium Wallpaper QD-Mini LED TV combines cinematic picture quality with an exceptionally slim, gallery-inspired design. Featuring 1,344 precision local dimming zones, up to 2,500 nits HDR peak brightness, a 144Hz HVA Pro panel and intelligent TSR AiPQ processing, this premium 2026 TCL television delivers outstanding scale, contrast and colour. Its remarkably slim 44.5mm flat-back profile and integrated Art Gallery also make it a compelling choice for contemporary living spaces across Ireland.

• 1,344 precise dimming zones: Advanced QD-Mini LED backlighting delivers deeper blacks, improved contrast and exceptional control over bright and dark scenes.
• Up to 2,500 nits HDR brightness: Powerful HDR highlights, vivid colour and excellent visual impact on a huge 98-inch screen.
• 144Hz HVA Pro panel: High native contrast, low-reflection screen technology and smooth motion for films, sport and gaming.
• Ultra-slim 44.5mm design: Flat-back construction, near-flush wall-mounting capability and Art Gallery functionality transform the television into a stylish centrepiece.
• Next-generation gaming: HDMI 2.1, 4K 144Hz, AMD FreeSync Premium Pro and up to 288Hz at Full HD resolution with Game Accelerator.
• Google TV with ONKYO sound: Smart streaming, intelligent voice search, TSR AiPQ picture processing and an integrated ONKYO Hi-Fi audio system.

The TCL A400U occupies an interesting position in the premium large-screen television market. Unlike conventional lifestyle televisions that prioritise appearance over performance, the 98A400U combines a minimalist wall-mounted aesthetic with serious Mini LED hardware. It is particularly appealing to customers who want both an immersive home cinema and a television that complements their interior design.

1,344-Zone QD-Mini LED – Precision Lighting on a Cinematic Scale

The TCL 98A400U uses Quantum Dot Mini LED technology, combining thousands of miniature LEDs with 1,344 independently controlled local dimming zones. This allows the backlight to adjust brightness across different areas of the screen, helping preserve dark shadow detail while displaying bright highlights.

TCL's All-domain Halo Control technology incorporates advanced light-emitting chips, condensed micro lenses and Micro-OD engineering to improve light distribution and reduce unwanted blooming around bright objects.

The result is a more convincing HDR experience, particularly with demanding scenes such as star-filled skies, night-time cityscapes and high-contrast cinematic content.

Up to 2,500 Nits HDR – Spectacular Highlights and Colour

With a manufacturer-rated peak HDR brightness of up to 2,500 nits, the 98A400U has the brightness capability required to make modern HDR content look genuinely impactful.

Combined with TCL Quantum Dot technology, the display achieves up to 93% coverage of the DCI-P3 colour gamut, producing rich, vibrant colours across films, streaming services and gaming content.

The television also supports premium HDR formats including Dolby Vision IQ and HDR10+, helping compatible content deliver more detailed highlights and improved tonal balance.

HVA Pro Panel – Deeper Contrast, Fewer Reflections

TCL's HVA Pro panel is designed to deliver higher native contrast than conventional LCD technologies. A specialised low-reflection film helps minimise distracting reflections from windows and room lighting, making the A400U well suited to bright living environments.

This is particularly valuable on a 98-inch screen, where reflections can become more noticeable simply because of the display's enormous surface area.

Wallpaper-Inspired Design – Just 44.5mm Deep

Despite its advanced Mini LED backlighting, the TCL 98A400U measures only 44.5mm deep without its stand. Its integrated flat-back construction allows it to sit close to the wall, with TCL advertising an approximately 3mm mounting gap when installed using a suitable mounting solution.

When you're not watching television, Art Gallery allows the screen to display artwork, digital creations or your own photographs. Ambient Mode adds relaxing visual scenes, helping the television function as part of the room rather than simply a black screen.

144Hz Gaming – Built for Next-Generation Consoles and PC Gaming

The TCL 98A400U features a native 144Hz refresh rate, giving it the capability to display exceptionally smooth high-frame-rate content.

With HDMI 2.1, Variable Refresh Rate, Auto Low Latency Mode and AMD FreeSync Premium Pro, it is well equipped for PlayStation 5, Xbox Series X and gaming PCs.

For compatible PC gaming, TCL's Game Accelerator can deliver refresh rates up to 288Hz at 1080p resolution. Full 4K resolution remains available at up to 144Hz.

TSR AiPQ Processor – Intelligent Picture Optimisation

TCL's TSR AiPQ Processor uses intelligent picture analysis to optimise contrast, colour, clarity and motion. Its processing capabilities are particularly useful when displaying everyday television broadcasts and lower-resolution streaming material on such a large 4K screen.

AI ClarityMaster, AI ContrastMaster, AI ColourMaster and AI MotionMaster work together to refine picture quality according to the content being watched.

Google TV and ONKYO Audio

Google TV brings together entertainment from popular streaming services in one intuitive interface, alongside personalised recommendations and voice-enabled search. Google Cast and Apple AirPlay 2 provide additional options for sharing compatible content from mobile devices.

An integrated ONKYO 2.0-channel Hi-Fi system provides everyday television audio, with support for immersive audio technologies including Dolby Atmos. For the best cinematic experience, particularly in larger rooms, we recommend pairing the television with an external soundbar or surround-sound system.

TCL 98A400U Technical Specifications

Specifications refer to the TCL 98A400U UK variant. Peak brightness, gaming performance and features may depend on content, connected equipment and settings. Appropriate specialist handling and a suitably rated mounting solution are recommended for this 98-inch television.