LG 34U640B-B UltraWide U6 Curved | WQHD 21:9 144Hz, All-in-One USB Type-C, Height & Tilt Adjustable Stand - Productivity Monitor

The LG UltraWide U6 34U640B-B is a 34-inch curved WQHD UltraWide productivity monitor engineered for professionals, content creators, and power users who need a substantially larger working canvas, high-contrast VA display, USB-C single-cable laptop connectivity, and integrated KVM switch for multi-PC desk setups — alongside 144Hz smooth motion and AMD FreeSync Premium for gaming and multimedia versatility. With a 3440×1440 WQHD 21:9 display, 4000:1 VA contrast, 99% sRGB, HDR10, 65W USB-C Power Delivery, and the LG Switch app for custom screen layouts — the 34U640B-B is the all-in-one productivity and entertainment centrepiece for demanding desk setups.

34" WQHD 21:9 ULTAWIDE — 3440×1440, 77% MORE PIXELS THAN FHD

The UltraWide WQHD (3440×1440) resolution with a 21:9 aspect ratio offers ample screen space to run multiple programs simultaneously, enhancing work efficiency. At 3440×1440, the 34U640B-B renders 4.95 million pixels — 77% more than standard Full HD 1920×1080 and 33% more than QHD 2560×1440 — across a screen width that is the equivalent of two 16:9 monitors placed side-by-side, without the centre bezel gap that breaks the display surface. For professional applications:

- Simultaneously open Premiere Pro timeline, source monitor, and project panel without window overlap

- Place two full A4 documents side-by-side at reading size for document comparison and editing

- Run a spreadsheet, email client, browser, and reference document visible simultaneously without Alt-Tab

- Gaming: 21:9 ultra-wide field of view in compatible games reveals more of the game world to the left and right simultaneously — a genuine spatial advantage in open-world, racing, and strategy titles

1800R CURVE — FOLLOWS YOUR NATURAL LINE OF SIGHT

The 1800R curvature follows the natural field of view to reduce distortion, while the 3-side virtually borderless screen provides an unobstructed, wide display for a more immersive and comfortable viewing experience. At 34 inches wide, a flat panel creates visible distortion at the extreme left and right edges of the display — the 1800R curve wraps the screen's edge pixels toward the viewer, maintaining consistent focal distance from left to right and reducing edge distortion for natural, fatigue-free extended use.

VA PANEL — 4000:1 CONTRAST, DEEP BLACKS

The 34U640B-B's VA (Vertical Alignment) panel delivers a 4000:1 contrast ratio — four times deeper than standard IPS panels at 1000:1. VA's superior contrast ratio produces genuinely deep blacks and rich shadow detail across dark content, HDR scenes, cinema, and dark-environment gaming — enhancing the depth and dimensionality of visual content beyond what IPS can achieve at equivalent price. VA also maintains wide 178°/178° viewing angles for consistent colour accuracy across the full UltraWide panel surface from any seating position.

99% sRGB + HDR10 — ACCURATE, VIVID COLOUR

HDR10 compatibility and 99% sRGB coverage provide accurate colour reproduction and tone mapping in HDR scenes. Up to 1.07 billion colours with 10-bit colour depth deliver smooth colour gradients without banding across documents, creative content, and HDR media — ensuring colour-sensitive work in photography, video editing, graphic design, and colour-graded content is represented accurately across the full 34-inch display surface.

USB TYPE-C — SINGLE CABLE DISPLAY + DATA + 65W CHARGING

Simplify your setup with USB-C connectivity, delivering display, data, and up to 65W laptop charging through a single cable. The USB-C port supports:

- DisplayPort Alt Mode: full 3440×1440 WQHD video signal

- USB 3.x data transfer: keyboard, mouse, USB hub connectivity through the monitor

- 65W Power Delivery: charges MacBook Air, thin-and-light laptops, and USB-C tablets simultaneously

A single USB-C cable replaces a separate power cable, display cable, and USB hub cable — reducing desk cable complexity to one connection between laptop and monitor. Ideal for MacBook Pro, MacBook Air, Dell XPS 13/15, ASUS ZenBook, and any USB-C laptop.

INTEGRATED KVM SWITCH — CONTROL TWO PCs WITH ONE KEYBOARD AND MOUSE

The KVM switch support lets one monitor control two PCs with a single monitor, keyboard, and mouse. The integrated KVM switch enables seamless switching between two connected computers — a USB-C laptop and a desktop PC, for example — sharing one keyboard and mouse across both systems without external KVM hardware. Drag-and-drop file transfer between systems is supported via the KVM switch, reducing the friction of multi-PC workflows in home office, creative studio, and developer environments.

LG SWITCH APP — CUSTOM SCREEN LAYOUTS AND WORKSPACE MANAGEMENT

LG Switch app splits your screen, customises layouts, and streamlines work and play. The LG Switch software provides custom picture-in-picture, picture-by-picture, and multi-zone screen division layouts — enabling simultaneous viewing of two connected sources side-by-side on the 34-inch canvas, or custom workflow zone arrangements tailored to specific professional applications.

144Hz + AMD FREESYNC PREMIUM — SMOOTH AND TEAR-FREE

Powered by AMD FreeSync Premium certification, this monitor provides tear-free, ultra-smooth visuals and low latency, delivering unmatched gaming precision. The 144Hz refresh rate keeps motion smooth and clear for video calls, streaming, and gaming — and AMD FreeSync Premium's LFC (Low Framerate Compensation) maintains stutter-free output even when GPU frame rate drops below the minimum refresh rate. For gaming, the 34U640B-B delivers tear-free, immersive ultrawide gaming for the GPU output levels that mainstream and mid-range GPUs achieve at 3440×1440.

HEIGHT + TILT ADJUSTABLE STAND

The ergonomic stand provides:

- Height adjustment: 80mm range for precise eye-level optimisation

- Tilt: -5° to +15° for comfortable viewing angle across desk heights and seating positions

VESA 100×100mm — MONITOR ARM COMPATIBLE

Standard VESA 100×100mm mounting enables mounting on any monitor arm, wall bracket, or desk mount for placement flexibility beyond the included stand.

COMPREHENSIVE CONNECTIVITY

- 1x USB-C (DisplayPort Alt Mode + 65W Power Delivery + USB data)

- 2x HDMI 2.0

- 1x DisplayPort 1.4

- USB downstream hub ports

- 1x 3.5mm Headphone/Audio Jack

- KVM Switch: Yes (integrated)

KEY SPECIFICATIONS

- Screen Size: 34" viewable

- Panel Type: VA (Vertical Alignment)

- Curvature: 1800R

- Resolution: WQHD 3440×1440 (21:9 UltraWide)

- Brightness: 300 cd/m² (typical)

- Contrast Ratio: 4000:1

- Colour Gamut: 99% sRGB (typical)

- Colour Depth: 1.07 billion (10-bit, HDR10)

- HDR: HDR10

- Viewing Angle: 178°/178° (H/V)

- Refresh Rate: 144Hz

- Response Time: 5ms (GtG)

- Adaptive Sync: AMD FreeSync Premium

- Inputs: 1x USB-C (DP Alt + PD 65W), 2x HDMI 2.0, 1x DisplayPort 1.4

- USB Hub: Yes (downstream ports)

- KVM Switch: Integrated

- Audio: 1x 3.5mm headphone/audio jack

- Built-in Speakers: No

- Stand: Height (80mm) + Tilt (-5°/+15°)

- VESA Mount: 100×100mm

- Bezels: 3-side virtually borderless

- Software: LG Switch app (screen layout and KVM management)

- Width: 809mm

- Weight (with stand): 7.7 kg

- Colour: Black

- Warranty: 1-Year LG Limited Warranty