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LG Ultrawide 34U640B-B 34" Class UW-QHD Curved Screen LCD Monitor - 21:9

449.99 449.99
449.99

449.99 / Units
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  • Height
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  • Curvature
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  • Tearing Prevention Technology
  • Adjustable Stand
  • Stand Adjustments
  • Built-in Devices
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  • USB Type-C
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Widescreen Workflows Made Effortless

Upgrade your desktop setup with a curved 34" 21:9 UltraWide™ WQHD display that lets you see more at once. Enjoy smooth 144Hz1 visuals, vibrant HDR color, and a sleek, narrow-bezel design-perfect for on-screen multitasking, creativity, and everyday comfort.

Curved 21:9 UltraWide™ WQHD Display

The 21:9 UltraWide™ WQHD (3440�1440) display gives you room to work across multiple apps at once-reducing window switching and improving focus. The subtle 1800R curve follows your natural line of sight for comfortable long sessions, while the sleek design keeps your workspace open, clean, and distraction-free.

Up to 99% sRGB Color Coverage

Up to 99% sRGB coverage and HDR10 support deliver balanced color and smooth tonal transitions across documents, media, and HDR content.

USB Type-C: All-in-One Connectivity

USB-C connectivity simplifies your setup by handling display, data, and up to 65W laptop charging through a single cable. With DisplayPort and HDMI and two USB ports also on board, it's easy to connect laptops and peripherals for a cleaner desk and smoother workflows.

Dual Controller (KVM Switch)

Control two PCs with a single monitor, keyboard, and mouse. Easily switch between devices and move files between systems with simple drag-and-drop-streamlining your setup and reducing desk clutter without extra hardware.

Customize Your Screen View with the Switch App

The Switch app2 transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to 6 sections, customize display layouts, or launch video calls with a single hotkey.

AMD FreeSync Premium™ Technology

Powered by AMD FreeSync Premium™ certification, this monitor delivers tear-free, ultra-smooth visuals with low latency-so fast motion stays controlled, responsive, and visually precise during gameplay.

144Hz Keeps Motion Super Smooth

With a 144Hz refresh rate and 5ms response time, this UltraWide™ keeps visuals smooth and clear. Perfect for video calls, streaming, and gaming.

Reader Mode Brings Comfort to Reading

Reader Mode reduces blue light displaying warmer hues and tones ideal for reading documents or browsing for extended periods.

Space-Saving Stand with Adjustable Screen

UltraWide's slim stand with a square base helps keep your workspace clean and organized while saving valuable desk space. The 3-side virtually borderless screen with tilt and height adjustability makes it easy to dial in a comfortable viewing position, and one-click mounting allows for quick, and easy setup.

  • The curved 34" 21:9 UltraWide™ WQHD expands your workspace ideal for multitasking
  • Up to 99% sRGB and HDR10 support deliver consistent color and detail
  • USB Type-C connectivity supports display, data transfer, and up to 65W charging
  • KVM switch support lets one monitor control two PCs with one keyboard and mouse
  • LG Switch app splits your screen, customizes layouts, and streamlines work and play
  • AMD FreeSync Premium™ delivers tear-free, low-latency gameplay with smooth motion
  • 144Hz refresh� and fast response keep motion smooth for work and streaming
  • Space-saving stand design offers tilt and height adjustment with narrow bezel screen
Brand
Brand LG Electronics
GPU / Graphics
Tearing Prevention Technology FreeSync Premium
Number of Screens 1
Screen / Display
Native Contrast Ratio 000:1 , 4
Brightness (Peak) 300 Nit
Flicker Free Yes
Curvature 1800R
Screen Size Class 34"
Viewable Screen Size 34"
Curved Screen Yes
Maximum Resolution 3440 x 1440
Screen Mode UW-QHD
Aspect Ratio 21:9
Panel Technology Vertical Alignment (VA)
Brightness 240 Nit
Response Time 5 ms
Standard Refresh Rate 144 Hz
Color Gamut 99% sRGB (CIE 1931)
Color Supported 1.07 Billion Colors
Horizontal Viewing Angle 178°
Vertical Viewing Angle 178°
Pixel Pitch 0.23175 mm x 0.23175 mm
Pixel Per Inch (PPI) 110
Response Time Details 5 ms GTG (Fast)
USB Ports
USB Yes
USB Type-C Yes
HDMI Ports
HDMI Feature Support Variable Refresh Rate (VRR)
HDMI Yes
Total Number of HDMI Ports 2
Number of HDMI 2.0 Ports 2
DisplayPort
DisplayPort Yes
Size / Dimensions
Weight with Stand (Approximat 17 lb
Height with Stand 18.30"
Depth with Stand 8.70"
Width with Stand 31.90"
VESA Mount Compatible Yes
VESA Mount Standard 100 x 100
Mount Type Wall Mountable
Appearance
Adjustable Stand Yes
Stand Adjustments Height
General Features
Built-in Devices KVM Switch
Frequency 60 Hz
Manufacturer LG Electronics