LG OLED77C66LB 77" C6 OLED evo AI 4K Smart TV 2026

The LG OLED77C66LB C6 takes LG’s premium OLED experience to a cinematic 77-inch screen. Hyper Radiant Colour Tech, Brightness Booster Pro and perfect pixel-level blacks are driven by the powerful Alpha 11 AI Processor 4K Gen3, while Dolby Vision, 165Hz VRR gaming and webOS 26 make the C6 equally accomplished with movies, sport and next-generation gaming.

• 77-inch OLED evo cinema experience – self-lit pixels deliver perfect blacks, superb contrast and exceptional colour across an immersive big-screen image.

• Hyper Radiant Colour & Brightness Booster Pro – LG’s latest OLED technology produces brighter highlights and more vivid, controlled HDR performance.

• Alpha 11 AI Processor 4K Gen3 – LG’s Dual AI Engine enhances detail, colour, HDR, motion and lower-resolution content in real time.

• Elite gaming specification – native 120Hz with VRR up to 165Hz, NVIDIA G-SYNC, AMD FreeSync Premium, ALLM and response times below 0.1ms.

• Dolby Vision & FILMMAKER MODE – premium HDR support combines with OLED’s precise pixel control for a genuinely cinematic picture.

• webOS 26 & Dolby Atmos – Apple AirPlay, Google Cast, LG ThinQ, AI features and 40W 2.2-channel Dolby Atmos audio complete the package.

The C-series has traditionally occupied the sweet spot in LG’s OLED range, and at 77 inches the C6 makes a particularly strong case. You get the scale of a genuine home-cinema television alongside LG’s Alpha 11 Gen3 processor, Brightness Booster Pro and the black-level performance that continues to make OLED so effective with films.

It is also exceptionally well suited to gaming. Four HDMI inputs, 4K 120Hz support and VRR up to 165Hz mean you can connect multiple consoles and a gaming PC without compromising the premium features. Unless you specifically need the design or additional performance offered further up LG’s OLED range, this is an outstanding big-screen all-rounder.

OLED evo With Hyper Radiant Colour

The OLED77C66LB uses LG’s OLED evo technology, where millions of individually controlled self-lit pixels can switch completely off when displaying black.

That pixel-level control gives the C6 its exceptional contrast, particularly during dark films and HDR scenes where conventional backlit televisions can struggle to reproduce bright objects against genuinely black backgrounds.

LG’s Hyper Radiant Colour Tech combines Perfect Black, Perfect Colour and Brightness Booster Pro to produce a brighter and more vibrant OLED image while maintaining the precision and subtle shadow detail that OLED is known for.

On a 77-inch screen, the result is particularly impressive. Films, live sport and high-quality streaming content gain the scale and impact associated with a projector setup, but with the contrast and convenience of a television.

Alpha 11 AI Processor 4K Gen3

The 2026 C6 is powered by LG’s Alpha 11 AI Processor 4K Gen3 with Dual AI Engine.

AI Picture Pro analyses individual scenes, objects and textures to improve detail and image balance, while Alpha 11 AI Super Upscaling 4K enhances lower-resolution television and streaming sources for the large 4K panel.

Dynamic Tone Mapping Ultra analyses HDR information to preserve highlight and shadow detail, while AI HDR Remastering can intelligently enhance compatible non-HDR content.

It represents a significant processing platform for LG’s C-series and helps make the C6 particularly capable with mixed-quality content, rather than only looking its best with pristine 4K sources.

Made For Movies

Dolby Vision, HDR10 and HLG are supported alongside FILMMAKER MODE.

Dolby Vision dynamically optimises compatible HDR content while OLED's pixel-level illumination gives the C6 the deep blacks and precise highlights required to reproduce high-contrast cinema material convincingly.

Ambient FILMMAKER MODE can also adapt to room lighting conditions while aiming to preserve the creative intent of the original production.

The sheer scale of the 77-inch panel makes the OLED77C66LB particularly well suited to dedicated movie nights and larger living spaces.

Exceptional Gaming Performance

Few televisions are better equipped for modern gaming.

The C6 has a native 120Hz OLED panel with Variable Refresh Rate support up to 165Hz. NVIDIA G-SYNC compatibility and AMD FreeSync Premium reduce tearing and stutter, while ALLM automatically activates low-latency gaming when a compatible console is detected.

OLED's response time is less than 0.1ms, producing exceptionally clean motion and immediate response during fast-paced games.

All four HDMI connections support 4K 120Hz alongside VRR, ALLM, QMS and QFT, making the C6 an excellent choice for households using multiple current-generation consoles or a high-performance gaming PC.

Dolby Vision gaming at up to 4K 120Hz is also supported.

webOS 26 & AI Hub

LG webOS 26 provides access to the major streaming services alongside LG Channels, Google Cast and Apple AirPlay.

LG’s AI platform introduces features including AI Voice ID, AI Picture and Sound Wizard, AI Chatbot and personalised user features designed to tailor the television experience to individual viewers.

Google Home and LG ThinQ integration provide additional smart-home connectivity, while Apple Home support makes the C6 equally comfortable within an Apple-based household.

The supplied AI Magic Remote retains LG’s popular point-and-click navigation system while providing quick access to the television’s expanding AI functions.

Dolby Atmos & AI Sound

The OLED77C66LB features a 40W 2.2-channel speaker system with Dolby Atmos.

Alpha 11 AI Sound Pro can analyse the soundtrack and create a virtual 11.1.2-channel presentation, while Clear Voice Pro is designed to improve dialogue clarity.

AI Object Remastering Ultra can also distinguish individual sound elements and enhance their clarity within the overall mix.

Compatible LG soundbars can use WOW Orchestra to combine their speakers with those built into the television, producing a larger and more integrated soundstage.

A dedicated soundbar or home cinema system remains a worthwhile addition to a 77-inch television of this quality, particularly for customers looking to create a true cinema-style setup.

LG OLED77C66LB Specification