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34" IPS QHD UltraWide™ Monitor (3440x1440) with Ergonomic Stand, HDR10, AMD FreeSync™, MAXXAUDIO®, OnScreen Controls, Flicker Safe, Reader Mode

LG 34BN780B


  • 34" UltraWide™ QHD (3440x1440) IPS
  • sRGB 99% (Typ.) with HDR10
  • Extend/Retract, Swivel, Height, Tilt
  • AMD FreeSync™

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This item has purchase restrictions.

We currently only offer this product for purchase within 80 miles of our store. Questions? Contact us for more information.

Detailed Contrast

HDR-compatible monitors display brighter whites and blacker blacks compared to SDR displays. HDR renders dark and bright areas of an image with many more details, which were indiscernible under the old standards.

Easily Follow Your Eye Level

The enhanced flexibility of the Ergo stand offers expanded ergonomic adjustment of extend, retract, swivel, pivot, height and tilt as well as providing the ideal screen position for a more comfortable and sustainable user experience.

Fully Use Your Desk

The compact design takes up very little desk surface and also contributes to easier installation.

Control with a Few Clicks

You can customize the workspace by splitting the display or adjusting basic monitor options with just a few mouse clicks.

Less Blue, Improved Visual Comfort

Reducing blue light to help lessen eye fatigue, Reader Mode creates a screen with a color temperature similar to paper and provides optimal condition for reading.

Care for Eyes

Flicker Safe reduces invisible flickering on the screen and provides a more comfortable working environment for your eyes.

More Space for Multi-Tasking

The UltraWide™ QHD monitor screen (3440x1440 resolution, 21:9 aspect ratio) is great for work. It allows you to have multiple items open on your screen and visible all at once.


  • 34" UltraWide™ QHD (3440x1440) IPS
  • sRGB 99% (Typ.) with HDR10
  • Extend/Retract, Swivel, Height, Tilt
  • AMD FreeSync™
  • OnSreen Control
Diagonal 34"
Resolution 3440 x 1440 (WQHD)
Panel Type IPS
Aspect Ratio 21:9
Pixel Pitch 0.2325 x 0.2325 mm
Brightness (Typ.) 300nits
Color Gamut (Typ.) sRGB 99% (CIE1931)
Color Depth (Number of Colors) 16.7 Million
Color Bit 8bit
Contrast Ratio (Typ.) 1000:1
Response Time (GTG) 5ms
Viewing Angle (CR 10) 178° (R/L), 178° (U/D)
Speaker 7W x 2
Maxx Audio Yes
HDR10 Yes
HDR Effect Yes
Flicker safe Yes
Reader Mode Yes
Color Weakness Yes
Super Resolution+ Yes
AMD FreeSync™ Yes
Black Stabilizer® Yes
Dynamic Action Sync® Yes
Smart Energy Saving Yes
Dual Controller Yes
OnScreen Control (LG Screen Manager) Yes
HDMI Yes (2ea)
HDMI Version 2.0
HDMI (HDCP Version) 2.2
DisplayPort Yes (1ea)
DP Version 1.4
DP (HDCP Version) 2.2
USB Upstream Port Yes (1ea/ver3.0)
USB Downstream Port Yes (2ea/ver3.0)
Headphone Out Yes
Type External Power (Adapter)
AC Input 100-240 Vac, 50/60 Hz
DC Output 19V, 3.42A
Power Consumption (Typ.) 45W
Power Consumption (Max.) 66W
Power Consumption (Sleep Mode) Less than 0.5W
Power Consumption (DC Off) Less than 0.3W
Borderless Design 3-Side Virtually Borderless Design
Tilt -25° to +25°
Swivel -280° to +280°
Height Range 130mm
Wall Mountable 100 x 100 mm
Base Detchable Yes
OneClick Stand Yes
Dimensions with Stand (W x H x D) 32.1 x 24.1 x 16 in, 816.5 x 612.4 x 406.4 mm
Dimensions without Stand (W x H x D) 32.1 x 14.4 x 1.8 in, 816.5 x 365.3 x 45.5 mm
Shipping Dimensions (W x H x D) 37 x 20.3 x 10.6 in, 940.0 x 516.0 x 268.0 mm
Weight with Stand 23.8 lbs/10.8kg
Weight without Stand 15.2 lbs/6.9kg
Shipping Weight 33.5 lbs/15.2kg
EPA 8.0 Yes
CB Yes
UL (cUL) Yes
ErP Yes
CE Yes
Warranty 3 Year Limited
Adapter Yes
Adapter (Color) Black
Power Cord Black/1.5m
HDMI Cable Black/1.8m (2ea)
Display Port Cable Black/1.8m
UPC 195174003497

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.