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| 3D | No |
|---|---|
| AMD FreeSync | Yes |
| AMD FreeSync type | FreeSync Premium |
| Aspect ratio | 32:9 |
| Backlight type | Edge-Lit |
| Built-in camera | No |
About this item
The World’s First 5K2K Monitor with Thunderbolt™ 5The LG UltraFine™ 40U990A is the world’s first 5K2K widescreen monitor with Thunderbolt™ 5, delivering ultra-fast data transfer, 96W charging, and dual display support. The monitor's 40” curved (2500R), Nano IPS Black panel offers brilliant color, and spectacular...
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From the manufacturer
About this product
- World’s first 5K2K monitor with Thunderbolt™ 5 for pro-level performance
- See sharper, work smarter—5K2K clarity for design, editing, and visual precision
- A wide 5K2K display built for creative precision and focused workflows
- Nano IPS Black and HDR 600 deliver deep blacks, vivid color, and contrast
- From bold to subtle, up to 99% DCI-P3 ensures impeccable color in every project
- 2000:1 contrast ratio delivers deeper blacks and remarkable visual depth
- Thunderbolt™ 5 powers fast, stable 5K2K production with 96W charging
- Connect two monitors and a laptop with a clean, single-cable daisy chain setup
The World’s First 5K2K Monitor with Thunderbolt™ 5
The LG UltraFine™ 40U990A is the world’s first 5K2K widescreen monitor with Thunderbolt™ 5, delivering ultra-fast data transfer, 96W charging, and dual display support. The monitor's 40” curved (2500R), Nano IPS Black panel offers brilliant color, and spectacular contrast - a new go-to display for creators, multritaskers and gamers.
5K2K Means More Pixels for More Creative Control
The 5K2K (5120x2160) Nano IPS Black display offers 33% more pixels than standard 4K UHD, delivering ultra-wide resolution, vivid color, and razor-sharp detail—creating a spacious, precise workspace ideal for video editing, graphic design, photography, and color-critical tasks.
Built for creators. Ready for professionals.
Built for creative flow, the UltraFine™ 5K2K screen makes it easy to work across complex timelines, layered interfaces, and multiple windows—ideal for editing, producing, and programming.
VESA DisplayHDR™ 600 Meets Nano IPS Black Brilliance
VESA DisplayHDR™ 600 and Nano IPS Black combine to deliver deep blacks, vivid highlights, and cinematic color—ideal for creators who need precision in light, shadow, and texture.
Up to 99% DCI-P3 Color Brilliance for Visual Pros
With up to 99% DCI-P3 color gamut coverage, this UltraFine™ display delivers bold, vibrant color across a wide spectrum—ideal for impactful video, photo, and design work in print, digital, and broadcast formats.
2000:1 Contrast for Stunning Visual Depth
Nano IPS Black enhances contrast to 2000:1, revealing richer shadows, deeper blacks, and sharper detail—perfect for bold color, improved depth, and edge-to-edge consistency.
5K2K Production Powered by Thunderbolt™ 5
Thunderbolt™ 5 supports commercial-level video, film, and game production with faster data transfer, 96W charging, and seamless 5K2K output—all through a single, stable, high-speed cable.
Daisy Chain Enhances Multitasking Efficiency
Daisy chain two monitors and a laptop via Thunderbolt™ 5 and DisplayPort—simplifying your workspace while expanding screen space for multitasking, content creation, or focused productivity
Versatile Ports for Limitless Possibilities
Thunderbolt™ 5, HDMI 2.1 (x2), DisplayPort 2.1 (UHBR 13.5) and USB-C let you connect laptops, cameras, and drives—no adapters needed. Enjoy stable, streamlined performance across creative, gaming, or professional workflows.
Dual Speakers. Deep, Immersive Sound.
Let the action surround you with dual speakers and Rich Bass—delivering deeper, fuller sound that enhances cinematic scenes.
FreeSync™ Premium Smooths Every Frame
FreeSync™ Premium keeps motion smooth and responsive, reducing screen tearing and stutter while mixing audio, gaming, or reviewing high-resolution video.
Personalized Your Display with Switch App
Easily customize image settings, split your screen into 11 layouts, and launch video calls instantly with the LG Switch App—streamlining your setup for productivity and entertainment.
Designed for Comfort and Focus
The narrow bezeled, 3-sided virtually borderless design and compact L-stand save space and reduce distractions, while tilt, height, and swivel adjustments support comfort and focus during long creative sessions.
Product details
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| 3D | No |
|---|---|
| AMD FreeSync | Yes |
| AMD FreeSync type | FreeSync Premium |
| Aspect ratio | 32:9 |
| Backlight type | Edge-Lit |
| Built-in camera | No |
| Built-in microphone | No |
| Built-in speaker(s) | Yes |
| Colour gamut | 99% |
| Colour gamut standard | DCI-P3 |
| Contrast ratio (typical) | 2000:1 |
| DCI-P3 coverage | 99% |
| Display brightness | 400 cd/m² |
| Display brightness (min) | 320 cd/m² |
| Display brightness (typical) | 450 cd/m² |
| Display diagonal | 100.8 cm (39.7") |
| Display diagonal (metric) | 101 cm |
| Display number of colours | 1.06 billion colours |
| Display resolution | 5120 x 2160 pixels |
| Display technology | LCD |
| HD type | WUHD |
| High Dynamic Range (HDR) supported | Yes |
| High Dynamic Range (HDR) technology | DisplayHDR 600, HDR Effect, High Dynamic Range 10 (HDR10) |
| LED backlight | Yes |
| Maximum refresh rate | 120 Hz |
| Multiroom | No |
| Native aspect ratio | 21:9 |
| Number of speakers | 2 |
| NVIDIA G-SYNC | No |
| Panel type | Nano IPS |
| Pixel density | 139 ppi |
| Pixel pitch | 0.1815 x 0.1815 mm |
| Response time (fast) | 5 ms |
| Response time measurement type | GTG (Gray to Gray) |
| RMS rated power | 20 W |
| Screen curvature rating | 2500R |
| Screen shape | Curved |
| Touchscreen | No |
| Viewing angle, horizontal | 178° |
| Viewing angle, vertical | 178° |
Logistics
| EAN | 8806096511282 |
|---|---|
| Unit of measure | — |
| Weight | — |
| Dimensions | — |
| Dangerous goods | No |
Warranty
- 12-month warranty on everything we sell.
- Runs from the day your order is delivered.
- Faults under normal use are repaired, replaced or refunded.
Payment
- Visa and Mastercard, processed securely by Tyl by NatWest with 3D Secure.
- PayPal — your PayPal balance or a saved card or bank account.
- Clearpay, Klarna and Billie — pay later or in instalments, processed by Stripe.
- No surcharge on any payment method; refunds go back to the way you paid.
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Choose at checkout. 18+, T&Cs apply, credit subject to status.
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