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31" Class 17:9 Digital Cinema 4K IPS LED Monitor (31" Diagonal)

  • 31MU97-B

Key Features

  • Digital Cinema 4K Resolution
  • IPS Display with Adobe RGB over 99.5%
  • Total Color Management
  • 10-Bit Color Depth
  • DCP-P3 Digital Cinema Color Standard
10-Bit Color Depth (1 billion colors)

10-Bit Color Depth (1 billion colors)

10-bit color depth that supports over 1-billion colors is 64 times richer than an 8-bit color display, re-creating colors softly and naturally without color banding. Now, all the details are right before you with the richer and wider color range that enables accurate, detailed, and natural-looking images. Also, with smoother transition in gradients, the more shades in between let you work with images in more detail.

IPS Display with Adobe RGB over 99.5%

IPS Display with Adobe RGB over 99.5%

By supporting Adobe RGB over 99.5% on the IPS Display, the 31MU97 minimizes color difference and color loss with the wide color gamut and color temperature that covers both the sRGB and CMYK color range. As a result, one can effortlessly retouch and image photos to create final products with vivid and vibrant colors that VA or other LCD panels cannot deliver.

DCP-P3 Digital Cinema Color Standard

DCP-P3 Digital Cinema Color Standard

Editing on-site footage with the full color expression is possible with the 31MU97’s DCI color standard support which reproduces digital
content color just like what you intended with the preview camera on site. Allows for accurate conditions such as shadow detail, color,
saturation, and brightness for finer editing and overall control in the post production stage.

Digital Cinema 4K Resolution

Digital Cinema 4K Resolution

The 31MU97 delivers 4K (4096 x 2160) resolution across a 31” display, providing crisp images with a significant amount of pixels on screen. 4K(4096 x 2160) resolution displays over four times the resolution of standard 1920 x1080 FHD, and over half a million more pixels than UHD resolution(3840 x 2160) which makes you view even the finest details clearly to carry out intricate work for higher quality output.

Dual Color Space

Dual Color Space

Compare the work done using both color modes simultaneously - half of the screen in one mode and the other half in another - color distortion and maintaining the original resolution are no longer a concern when it comes to output. With Adobe RGB and sRGB side-by-side, you can get an idea of how the final printable will look like with Adobe RGB mode and also can find out how the final output will be on websites with the sRGB mode at once.

Total Color Management

Total Color Management

Through detailed color calibration testing, the 31MU97 maintains the color standard with software calibration and a factory preset, minimizing differences in color space and expressions between the original images, monitor screen, and printed result.

MAXXAUDIO® + 5W Speakers

MAXXAUDIO® + 5W Speakers

With two internal 5W speakers and the MAXXAUDIO® functions,
there is no need for separate high-end monitoring speakers. The 31MU97 which supports MAXXAUDIO® delivers high quality sound with a wide range of vibrant, crisp, and clean high and low sounds while reviewing or editing 4K contents.

Pivot / Height Adjustment

Pivot / Height Adjustment

The 31MU97’s pivot function enables you to not reduce size of photos or drag and scroll the vertically long photos all the way down any more. It also lets you could rotate origin pictures up to 90° depending on the ratio of the work space, giving you the perfect conditions to work under. By activating pivot function on your needs, 31MU97 allows fast and efficient work without any discomfort.

Screen Size 31"
Screen Size Class (diagonal) 31" Class (31" diagonal)
Panel Type IPS
Color Gamut (CIE1931) AdobeRGB 99.5%
Aspect Ratio 17:9
Resolution 4096x2160
Contrast Ratio(Original) 1M:1 (DFC)
Viewing Angle (CR≥10) 178/178
Surface Treatment Advanced Anti-glare
USB3.0 4
Headphone Out 1
Display Port 1
Mini DisplayPort 1
Type Built-in Power
Input 100~240V, 50/60Hz
Normal On (EPA 6.0) 49W
Power Save/Sleep Mode (Max.) 1.2(USB3.0)
Pivot Stand Yes
True Color Pro (S/W) Yes
PC Yes
PBP (Picture by Picture) Yes
Plug & Play Yes
Factory Calibration Yes
Picture Mode Yes
Screen Split (S/W) Yes
Monitor without Stand (WxHxD) 29" x 2.1" x 16.04"
With Stand (WxHxD) 29" x 9.5" x 19~24.5"
Shipping Dimensions (WxHxD) 38.3" x 6" x 20.1"
Without Stand Weight 16.97 lbs
With Stand Weight 21.97 lbs
Shipping Weight 26.46 lbs
UL(cUL) Yes
Windows Yes (win8)
Power Cord 1
Wall mount size (mm) 100 x 100
DP to MiniDP Yes
Limited Warranty 1 Year Parts & Labor
UPC 719192195530

What People Are Saying

Rated 4 out of 5 by from Great image quality I love photography and video/photo composition. This monitor is perfect for this work. The only thing I do not like, is the control joystick. I have two PC and often switch the entry from one to another (the split screen is not good for me). to exchange input, I have to click with the joystick 9 times in various directions, I have other monitor where just one click. I hope in a new firmware to improve the function menu.
Date published: 2016-04-11
Rated 4 out of 5 by from Outstanding. Have had this for several months now and the colors and detail are outstanding. BUT, occasionally, when it is turned on for a period of time, there is a loud popping sound (like a capacitor discharging) and a momentary scrambling of the screen. Everything works fine afterwards and it does not seem to effect anything I am working on. I am worried because I do not know whether this is an indication of a potential major problem that will effect the life of the unit.
Date published: 2015-12-18
Rated 5 out of 5 by from Amazing Picture Bought this as a replacement for a 1080P monitor I had run for a few years. Worth every dime I spent on it.
Date published: 2015-12-03
Rated 5 out of 5 by from Awesome Awesome product, I highly recommend it. Displays in true cinema 4K resolution standard.
Date published: 2015-07-21
Rated 5 out of 5 by from Fantastic Monitor I have had the monitor about 2 months now and I couldn't be happier with it. The picture is amazing and I am surprised every time I sit down in front of it how good it looks. The features are good and it is easy to use and set up. It may be a professional grade monitor but you don't have to be a pro to appreciate how good this monitor looks. I am not much of a gamer but I have played a game or two on it and it is excellent for games as well.
Date published: 2015-07-21
Rated 5 out of 5 by from This is a Great Monitor This is the best monitor that I have ever owned. The picture is stunning. The 4k looks as good as my 4k TV. You won't regret in getting one of these.
Date published: 2015-07-03
Rated 5 out of 5 by from GOOD NEWS MACPRO 2013 USERS FULLY COMPATIBLE WITH MACPRO 2013. Forget about using your own cable, YOU MUST USE THE DISPLAY/THUNDERBOLT COMBO CABLE THAT COMES WITH THE MONITOR. I AM ABLE TO TO GET THE CINEMATIC DISPLAY MAX RESOLUTION 4096 X 2160 @ 60HZ VIA SwitchResX. EASY EASY SETTINGS. YOU MUST HAVE THE LATEST OSX YOSEMITE version 10.10.3 IN ORDER TO GET 60HZ WITH ProResX. So excited NOW. To all the VIDEO EDITING USERS, don't forget to calibrate your monitor. Don't let the near PERFECT pristine Graphic fool you. You'll get 2x the quality of your current graphic realism after calibration. Trust me. I DID NOT USE TRUE COLOR PRO, I instead used Spyder 4 Elite.
Date published: 2015-04-30
Rated 5 out of 5 by from Overall a great product This monitor is pretty great! I have had a few issues with flickering occasionally, and this may be due to my computer's graphic card. The screen is vibrant, and it makes my workflow much easier.
Date published: 2015-04-03
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We're here to support you with our product.

View 31MU97-B Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

Hello,  The base of my 31mu97-b is cracked and not stable. How can I go about getting a replacement stand from LG without sending the whole display in. I need it for work and cannot send a whole unit in for repair. 

Asked by: Cullen hickman
We appreciate your interest in this Monitor. Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at
Answered by: ShenaS
Date published: 2016-03-01


Asked by: robulko
Our offices, in the United States, do not have product information for Canada. In order to obtain such information, it is recommended to check our subsidiary’s website, at You may also contact our Canada offices at 1-888-542-2623.
Answered by: NeilE
Date published: 2016-03-06

LG true color pro software dosen't work anymore under Osx El capitan. do you have any update or suggestion ?

Asked by: Marco Ricci
Our offices, in the United States, do not have specific product information units released in Casablanca. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2016-03-06

What's the difference between the lg 31MU97-B and the lg 31MU97C-B?  

Asked by: Nala
I called LG and they said "C" is for "Commercial". Same monitor, but has longer 3-year warranty I believe. 
Answered by: Tylerosis
Date published: 2015-12-09

The monitor guide for my 31MU97 says that you have to have a supported calibrator to use the True Color Pro function. Where do you get it?

Asked by: GeekyGirl68
We appreciate your interest int his monitor. The TRUE COLOR PRO function is contained on the CD which accompanies the monitor. It should be installed on the computer and operated from that point.
Answered by: NeilE
Date published: 2016-02-19

What is the response time? What is the pixel size?

Asked by: fixallmike
The LG 31" Class 17:9 Digital Cinema 4K IPS LED Monitor (31" Diagonal), Model # 31MU97-B has a response time of 5 ms. After some calculations, the LG 31MU97-B will have a pixel density of 149.375 ppi so that would make the pixel size 0.17 mm...^IFV
Answered by: LGJoel
Date published: 2016-03-18

Does it has VESA mount capability?

Asked by: JAEG
Yes it does. I believe it is 100 x 100.
Answered by: GOhio
Date published: 2015-07-22

How many pixels per inch "ppi" is this display?

Pixel Density pixels per inch ppi
Asked by: KennyBrandon
Hello KennyBrandon. Calculating the Pixel Density (PPI or pixels per square inch) for the LG 29" Class 21:9 UltraWide™ IPS LED Monitor (29" Diagonal), Model # 31UM97-B is actually a simple calculation. Just take the sum of the given horizontal resolution (4096) squared and that of the vertical resolution (2160) squared. Take the square root of that sum and divide by the diagonal measurement of the screen and you should get 149.4 PPI...^IFV
Answered by: LGJoel
Date published: 2016-01-12
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