Table of Contents
LG 34WK95U-W User Manual
Displayed below is the user manual for 34WK95U-W by LG which is a product in the Computer Monitors category. This manual has pages.
Related Manuals
* LG LED Monitor applies LCD screen with LED backlights.
Please read this manual carefully before operating your set and
retain it for future reference.
34WK95U 34BK95U
OWNER’S MANUAL
LED LCD MONITOR
(LED Monitor*)
www.lg.com
Copyright © 2018 LG Electronics Inc. All Rights Reserved.
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LICENSE
Each model has different licenses. Visit www.lg.com for more information on the license.
The terms HDMI and HDMI High-Definition Multimedia Interface,
and the HDMI Logo are trademarks or registered trademarks of
HDMI Licensing Administrator, Inc. in the United States and other
countries.
The SuperSpeed USB Trident logo is a registered trademark of USB
Implementers Forum, Inc.
Thunderbolt and the Thunderbolt logo are trademarks of Intel
Corporation or its subsidiaries in the U.S. and/or other countries.
* USB Type-CTM and USB-CTM are trademarks of USB Implementers Forum.
TABLE OF CONTENTS
LICENSE ...................................................... 2
OPEN SOURCE SOFTWARE NOTICE
INFORMATION ............................................3
ASSEMBLING AND PREPARING .................. 3
USING THE MONITOR .................................. 8
USER SETTINGS ........................................ 11
TROUBLESHOOTING ................................. 22
PRODUCT SPECIFICATION ......................... 24
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OPEN SOURCE SOFTWARE NOTICE INFORMA
TION
To obtain the source code under GPL, LGPL, MPL, and other open source licenses, that is contained in this product,
please visit http://opensource.lge.com.
In addition to the source code, all referred license terms, warranty disclaimers and copyright notices are available
for download.
LG Electronics will also provide open source code to you on CD-ROM for a charge covering the cost of performing
such distribution (such as the cost of media, shipping, and handling) upon email request to opensource@lge.com.
This offer is valid for a period of three years after our last shipment of this product. This offer is valid to anyone in
receipt of this information.
ASSEMBLING AND PREPARING
CAUTION
•Always use genuine LG components to ensure safety and product performance.
•The product warranty will not cover damage or injury caused by the use of unauthorized components.
•It is recommended that use the supplied components.
•If you use generic cables not certified by LG, the screen may not display or there may be image noises.
•Illustrations in this document represent typical procedures, so they may look different from the actual product.
•Do not apply foreign substances (oils, lubricants, etc.) to the screw parts when assembling the product. (Doing
so may damage the product.)
•Applying excessive force when tightening screws may cause damage to the monitor. Damage caused in this
way will not be covered by the product warranty.
•Do not carry the monitor upside down by just holding the base. This may cause the monitor to fall off the stand
and could result in personal injury.
•When lifting or moving the monitor, do not touch the monitor screen. The force applied to the monitor screen
may cause damage to it.
NOTE
•The components may look different from those illustrated here.
•Without prior notice, all product information and specifications contained in this manual are subject to change
to improve the performance of the product.
•To purchase optional accessories, visit an electronics store or an online shopping site, or contact the retailer
from which you purchased the product.
•The power cord provided may differ depending upon the region.
Supported Drivers and Software
You can download and install the latest version from the enclosed CD or from the LGE website (www.lg.com).
Drivers and Software Installation Priority
Monitor Driver Recommended
OnScreen Control Recommended
Dual Controller Optional
True Color Pro Optional
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Product and Button Description
Joystick Button
How to Use the Joystick Button
You can easily control the functions of the monitor by pressing the joystick button or moving it left/right/up/
down with your finger.
Basic Functions
Power on Press the joystick button once with your finger
to turn on the monitor.
Power off
Press and hold the joystick button once more
than 5 seconds with your finger to turn off the
monitor.
/ Volume control You can control the volume by moving the
joystick button left/right.
NOTE
•The joystick button is located at the bottom of the monitor.
Moving and Lifting the Monitor
When moving or lifting the monitor, follow these instructions to prevent the monitor from being scratched or
damaged and to ensure safe transportation, regardless of its shape or size.
•Place the monitor in the original box or packing material before attempting to move it.
•Before moving or lifting the monitor, disconnect the power cord and all other cables.
•Hold the bottom and side of the monitor frame firmly. Do not hold the panel itself.
•When holding the monitor, the screen should face away from you to prevent it from being scratched.
•When transporting the monitor, do not expose the monitor to shock or excessive vibration.
•When moving the monitor, keep it upright and never turn the monitor on its side or tilt it sideways.
CAUTION
•Avoid touching the monitor screen as much as possible.
-This may result in damage to the screen or some of the pixels used to create images.
•If you use the monitor panel without the stand base, its joystick button may cause the monitor to become
unstable and fall, resulting in damage to the monitor or human injury. In addition, this may cause the joystick
button to malfunction.
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Installing on a Table
•Lift the monitor and place it on the table in an upright position. Place the monitor at least 100mm (3.9 inches)
away from the wall to ensure sufficient ventilation.
100 mm
(3.9 inches)
100 mm
(3.9 inches) 100 mm
(3.9 inches)
100 mm
(3.9 inches)
CAUTION
•Unplug the power cord before moving or installing the monitor. There is risk of electric shock.
•Make sure to use the power cord that is provided in the product package and connect it to a grounded power
outlet.
•If you need another power cord, please contact your local dealer or the nearest retail store.
Adjusting the Stand Height
1 Place the monitor mounted on the stand base in an upright position.
2 Handle the monitor with both hands for safety.
Max. 110.0 mm (4.3 inches)
WARNING
•When adjusting the screen height, do not place your hand on the stand body to avoid injury to your fingers.
Adjusting the Angle
1 Place the monitor mounted on the stand base in an upright position.
2 Adjust the angle of the screen.
The angle of the screen can be adjusted forward or backward from -5° to 15° for a comfortable viewing
experience.
WARNING
•To avoid injury to the fingers when adjusting the screen, do not hold the lower part of the monitor’s frame as
illustrated below.
•Be careful not to touch or press the screen area when adjusting the angle of the monitor.
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Using the Kensington Lock
The connector for the Kensington security system is located at the bottom of the monitor.
For more information on installation and usage, refer to the Kensington lock owner’s manual or visit the website
at http://www.kensington.com.
Connect the monitor to a table using the Kensington security system cable.
NOTE
•The Kensington security system is optional. You can obtain optional accessories from most electronics stores.
Installing the Wall Mount Plate
This monitor meets the specifications for the wall mount plate or other compatible devices.
NOTE
•The wall mount plate is sold separately.
•For more information on installation, refer to the wall mount plate’s installation guide.
•Be careful not to apply too much force while mounting the wall mount plate as it may cause damage to the
screen.
•Remove the stand before installing the monitor on a wall mount by performing the stand attachment in
reverse.
Installing on the Wall
Install the monitor at least 100mm (3.9 inches) away from the wall and leave about 100mm (3.9 inches)
of space at each side of the monitor to ensure sufficient ventilation. Detailed installation instructions can be
obtained from your local retail store. Alternatively, please refer to the manual for how to install and set up a
tilting wall mounting bracket.
100 mm
(3.9 inches)
100 mm
(3.9 inches)
100 mm
(3.9 inches) 100 mm
(3.9 inches)
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CAUTION
•Unplug the power cord before moving or installing the monitor to avoid electric shock.
•Installing the monitor on the ceiling or on a slanted wall may result in the monitor falling off, which could lead
to injury. Use an authorized LG wall mount and contact the local dealer or qualified personnel.
•Applying excessive force when tightening screws may cause damage to the monitor. Damage caused in this
way will not be covered by the product warranty.
•Use the wall mounting bracket and screws that conform to VESA standards. Damage caused by the use or
misuse of inappropriate components will not be covered by the product warranty.
•When measured from the back of the monitor, the length of each installed screw must be 8 mm (0.3 inches)
or less.
Wall Mount Plate
Back of the Monitor
Standard screw:
M4 x L10
Wall Mount Plate
Back of the Monitor
Max. 8 mm (0.3 inches)
To install the monitor to a wall, attach a wall mounting bracket (optional) to the back of the monitor.
Make sure that the wall mounting bracket is securely fixed to the monitor and to the wall.
Wall Mount (mm) 100 x 100
Standard screw M4 x L10
Number of screws 4
Wall Mount Plate (Optional) RW120
NOTE
•A non-VESA standard screw may damage the product and cause the monitor to fall. LG Electronics is not liable
for any accidents relating to the use of non-standard screws.
•The wall mount kit includes the installation guide and all necessary parts.
•The wall mounting bracket is optional. You can obtain optional accessories from your local dealer.
•The length of the screw may differ for each wall mounting bracket. If you use screws longer than the standard
length, it may damage the inside of the product.
•For more information, please refer to the user manual for the wall mounting bracket.
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USING THE MONITOR
•Illustrations in this manual may differ from the actual product.
Press the joystick button, go to Settings Input, and then select the input option.
CAUTION
•Do not press the screen for a prolonged time. This may cause image distortion.
•Do not display a still image on the screen for a prolonged time. This may cause image retention. Use a PC
screensaver if possible.
•When connecting the power cord to the outlet, use a grounded (3-hole) power strip or a grounded power
outlet.
•The monitor may flicker when turned on in an area where the temperature is low. This is normal.
•Sometimes red, green, or blue spots may appear on the screen. This is normal.
Connecting to a PC
•This monitor supports the *Plug and Play feature.
* Plug and Play: A feature that allows you to add a device to your computer without having to reconfigure
anything or install any manual drivers.
HDMI Connection
Transmits digital video and audio signals from your PC to the monitor.
CAUTION
•Using a DVI to HDMI / DP (DisplayPort) to HDMI cable may cause compatibility issues.
•Use a certified cable with the HDMI logo attached. If you do not use a certified HDMI cable, the screen may not
display or a connection error may occur.
•Recommended HDMI cable types
-High-Speed HDMI®/TM cable
-High-Speed HDMI®/TM cable with Ethernet
DisplayPort Connection
Transmits digital video and audio signals from your PC to the monitor.
NOTE
•There may be no video or audio output depending on the DP (DisplayPort) version of the PC.
•Make sure to use the supplied DisplayPort cable of the product. Otherwise, this may cause the device to
malfunction.
•If you are using a Mini DisplayPort output graphics card, use a Mini DP to DP (Mini DisplayPort to DisplayPort)
cable or gender that supports DisplayPort1.4. (Sold separately)
ThunderboltTM 3 ( ) Connection
You can connect your high-resolution display or high-performance data device to the monitor via a
ThunderboltTM 3 ( ) port.
NOTE
•The maximum data transmission rate of each port is 40 Gb/s.
•Make sure to use a ThunderboltTM 3 ( ) certified cable. Otherwise, this may cause the device to malfunction.
•ThunderboltTM 3 ( ) is supported in such environments as Windows 10 and Mac product.
•In accordance with Mac products may not support the recommended resolution or the some features.
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Connecting AV Devices
HDMI Connection
HDMI transmits digital video and audio signals from your AV device to the monitor.
NOTE
•Using a DVI to HDMI / DP (DisplayPort) to HDMI cable may cause compatibility issues.
•Use a certified cable with the HDMI logo attached. If you do not use a certified HDMI cable, the screen may not
display or a connection error may occur.
•Recommended HDMI cable types
-High-Speed HDMI®/TM cable
-High-Speed HDMI®/TM cable with Ethernet
Connecting Peripherals
USB Device connection
The USB port on the product functions as a USB hub.
NOTE
•It is recommended you install all Windows Updates to keep your Windows up-to-date before connecting to the
product for use.
•Peripheral devices are sold separately.
•A keyboard, mouse, or USB device can be connected to the USB port.
•The charging speed may vary depending on the device.
(Sold separately)
CAUTION
•Cautions When Using a USB Device
-A USB device with an automatic recognition program installed, or that uses its own driver, may not be
recognized.
-Some USB devices may not be supported or may not work properly.
-It is recommended to use a USB hub or hard disk drive with power supplied. (If the power supply is not
adequate, the USB device may not be recognized properly.)
Case 1: ThunderboltTM 3 ( ) Input
Peripheral devices connected to the USB IN port can be controlled from the PC.
If you change the input on the menu while a device is connected via the ThunderboltTM 3 ( ) port, then the
device connected via the USB port may not work properly.
[To use Thunderbolt cable]
To use USB 3.0, connect the Thunderbolt cable from the monitor to your PC.
Set the USB Upstream menu in General to USB-C.
[PC] [Monitor]
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Case 2: HDMI/DP (DisplayPort) Input
Peripheral devices connected to the USB IN port can be controlled from the PC.
[To use USB C-A cable]
To use USB 3.0, connect the USB C-A cable from the monitor to your PC.
Set the USB Upstream menu in General to USB-C.
[PC] [Monitor]
(Sold separately)
[To use USB A-B cable]
To use USB 2.0, connect the USB A-B cable from the monitor to your PC.
Set the USB Upstream menu in General to USB-B.
[PC] [Monitor]
Headphones Connection
Connect peripherals to the monitor via the headphones port.
NOTE
•Peripheral devices are sold separately.
•Depending on the audio settings of the PC and external device, headphones and speaker functions may be
limited.
•If you use angled earphones, it may cause a problem with connecting another external device to the monitor.
Therefore, it is recommended to use straight earphones.
Angled Straight
(Recommend)
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USER SETTINGS
NOTE
•Your monitor’s OSD (On Screen Display) may differ slightly from that shown in this manual.
Activating the Main Menu
1 Press the joystick button on the bottom of the monitor.
2 Move the joystick up/down and left/right to set the options.
3 Press the joystick button once more to exit the main menu.
Joystick Button
Button Menu Status Description
Main menu disabled Enables the main menu.
Main menu enabled Exits the main menu.
(Holding down the button more than 5 seconds to turn off the monitor. You can turn off the monitor this way at any time, including when the OSD is on.)
Main menu disabled Adjusts the monitor volume level.
Main menu enabled Enters the Input features.
Main menu disabled Adjusts the monitor volume level.
Main menu enabled Enters the Settings feature.
Main menu disabled Displays the information on the current input.
Main menu enabled Turns off the monitor.
Main menu disabled Displays the information on the current input.
Main menu enabled Enters the Picture Mode feature.
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Main Menu Features
Power Off
Input Settings
Picture Mode
Exit
Main Menu Description
Input Sets input mode.
Power Off Turns off the monitor.
Settings Configures the screen settings.
Picture Mode Sets the picture mode.
Exit Exits the main menu.
Menu Settings
1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Settings.
2 Move the joystick up/down and left/right to set the options.
3 To return to the upper menu or set other menu items, move the joystick to or pressing ( ) it.
4 If you want to exit the OSD menu, move the joystick to until you exit.
Quick Settings Input Picture General
NOTE
•: On
•: Off
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Quick Settings
Settings > Quick Settings Description
Brightness
Adjusts the contrast and brightness of the screen.
Contrast
Auto Brightness Optimizes the brightness automatically for surrounding illuminance.
Volume
Adjusts the volume.
NOTE
•You can adjust Mute / Unmute by moving the joystick button to in the Volume menu.
Input
Settings > Input Description
Input List Selects the input mode.
Aspect Ratio
Adjusts the aspect ratio of the screen.
Full Wide Displays the video in widescreen, regardless of the video signal input.
Original Displays video according to the aspect ratio of the video signal input.
Just Scan The aspect ratio is not adjusted from the original.
Cinema 1 Enlarges the screen with an aspect ratio of 21:9.
Cinema 2 Enlarges the screen with an aspect ratio of 21:9, including the black box at the bottom for subtitles.
PBP Displays the screens of two input modes on one monitor.
Main/Sub Screen Change Toggles between the main screen and sub screen in PBP mode.
Main/Sub Sound Change Toggles between the audio of the main screen and sub screen in PBP mode.
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[PBP]
Settings > Input Description
Input List
Displays the screens of two input modes on one monitor.
Main Input List Please refer to the table below for possible PBP combinations.
Sub Input List
PBP Connection
Sub Screen (Right)
Main Screen (Left)
Aspect Ratio
Adjusts the aspect ratio of the screen.
Main Aspect Ratio Full Wide Displays the video to fit the PBP screen, regardless of the video signal input.
Original Displays the video in the aspect ratio of the video signal input on the PBP screen.
Sub Aspect Ratio Full Wide Displays the video to fit the PBP screen, regardless of the video signal input.
Original Displays the video in the aspect ratio of the video signal input on the PBP screen.
PBP You can disable the feature that displays images from two input modes simultaneously on one monitor.
Main/Sub Screen Change Toggles between the main screen and sub screen in PBP mode.
Main/Sub Sound Change Toggles between the audio of the main screen and sub screen in PBP mode.
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Picture
NOTE
•The Picture Mode that can be set depends on the Input signal.
[Picture Mode on SDR (Non-HDR) signal]
Settings > Picture Description
Picture Mode
Custom Allows the user to adjust each element.
Vivid Heightens contrast, brightness and sharpness to display vivid images.
HDR Effect Optimizes the screen for high dynamic range.
Reader Optimizes the screen for reading documents. You can brighten the screen in the OSD menu.
Cinema Optimizes the screen to improve the visual effects of a video.
sRGB A standard RGB color space for the monitor and printer.
DCI-P3 Suitable for watching digital videos.
EBU A standard TV PAL color space for broadcasting.
REC709 A standard HDTV color space for broadcasting.
SMPTE-C A standard TV NTSC color space for broadcasting.
Color Weakness This mode is for users who cannot distinguish between red and green. It enables users with color weakness to easily distinguish
between the two colors.
Calibration 1 Adjusts to the last calibrated screen.
Calibration 2 Adjusts to the previously calibrated screen.
NOTE
•If the Picture Mode is changed in the DP (DisplayPort) input, the screen may flicker or the resolution of your PC screen may be affected.
•Calibration 2 : Installation of TRUE COLOR PRO will enable this menu.
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[Picture Mode on HDR signal]
Settings > Picture Description
Picture Mode
Custom Allows the user to adjust each element.
Vivid Optimized the screen for HDR vivid colors.
Standard Optimized the screen for HDR standard.
Cinema Optimized the screen for HDR video.
NOTE
•HDR content may not display correctly depending on Windows 10 OS settings, please check HDR On/Off settings in Windows.
•When the HDR function is turned on, the characters or picture quality may be poor according to Graphic card performance.
•While the HDR function is on, screen flickering or cracking may occur when changing the monitor input or power on/off according to Graphic card performance.
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Settings > Picture Description
Picture Adjust
Brightness Adjusts the contrast and brightness of the screen.
Contrast
Auto Brightness Optimizes the brightness automatically for surrounding illuminance.
Sharpness Adjusts the sharpness of the screen.
SUPER RESOLUTION+
High Optimizes the screen for crystal clear images. Best for high-definition video or games.
Middle Optimizes the screen for comfortable viewing, with images at the middle level between the low and high
modes. Best for UCC or SD videos.
Low Optimizes the screen for smooth and natural images. Best for still images or images with less movement.
Off Displays in the most common setting. Disables SUPER RESOLUTION+.
NOTE
•Because this is a function to increase the sharpness of low resolution pictures, it is not recommended to use the function for
normal text or for desktop icons. Doing so may result in unnecessarily high sharpness.
Black Level
Sets the offset level
•Offset: as a reference for a video signal, this is the darkest color the monitor can display.
High Keeps the current contrast ratio of the screen.
Low Lowers the black levels and raises the white levels from the current contrast ratio of the screen.
DFC Adjusts the brightness automatically according to the screen.
Uniformity
Adjusts uniformity of the image.
NOTE
•The Uniformity menu is activated only in Custom and sRGB modes. Enabling Uniformity may reduce the overall brightness
of the image.
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Settings > Picture Description
Color Adjust
Gamma
Mode 1,
Mode 2,
Mode 3
The higher the gamma value, the darker the image becomes. Likewise, the lower the gamma value, the lighter
the image becomes.
Mode 4 If you do not need to adjust the gamma settings, select Mode 4.
Color Temp
Set your own color temperature.
Custom The user can adjust it to red, green, or blue by customization.
6500K Sets the screen color to a reddish tone.
7500K Sets the screen color to between a red and blue tone.
9300K Sets the screen color to a bluish tone.
Manual Adjusts the color temperature in 500K increments. (Note that 9300K is supported rather than 9500K.)
Red/Green/Blue You can customize the picture color using red, green, and blue colors.
Six Color
Meets the user requirements for colors by adjusting the hue and saturation of the six colors (red, green, blue, cyan, magenta, and
yellow) and then saving the settings.
Hue Adjusts the tone of the screen colors.
Saturation Adjusts the saturation of the screen colors. The lower the value, the less saturated and brighter the colors
become. The higher the value, the more saturated and darker the colors become.
Response Time
Sets a response time for displayed pictures based on the speed of the screen. For a normal environment, it is recommended that you use Fast.
For a fast-moving picture, it is recommended that you use Faster. Setting to Faster may cause image sticking.
Faster Sets the response time to Faster.
Fast Sets the response time to Fast.
Normal Sets the response time to Normal.
Off Disables the feature.
Picture Reset Do you want to reset your picture settings? No Cancel the select.
Yes Returns to the default settings.
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General
Settings > General Description
Language Sets the menu screen to the desired language.
SMART ENERGY SAVING
Conserve energy by using luminance compensation algorithm.
High Saves energy using the high-efficiency SMART ENERGY SAVING feature.
Low Saves energy using the low-efficiency SMART ENERGY SAVING feature.
Off Disables the feature.
NOTE
•The value of energy saving data may differ depending on panel and panel suppliers.
• If you select the option of SMART ENERGY SAVING is High or Low, monitor luminance become higher or lower depend on source.
Power LED
Turns the power LED on the bottom of the monitor on or off.
NOTE
•When the Power LED function is turned on, it operates as follows:
-On Mode: White
-Sleep Mode: White Blinking
-Off Mode: Off
Automatic Standby Feature that automatically turns off the monitor when there is no movement on the screen for a period of time. You can set a timer for the auto-off function.
(Off, 4 H, 6 H, and 8 H)
DisplayPort Version Set DisplayPort Version to the same version as the connected external device. (1.4, 1.2, and 1.1)
To use the HDR function, set to 1.4.
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Settings > General Description
HDMI ULTRA HD Deep Color
If the connected device supports Deep Color, sharper images are provided.
4 K @ 60 Hz Support Format (HDMI ULTRA HD Deep Color : On)
Resolution Frame rate (Hz)
Color Depth / Chroma Sampling
8 bit 10 bit
3840 x 2160 59.94
60.00
YCbCr 4:2:0
YCbCr 4:2:2
YCbCr 4:4:4 -
RGB -
NOTE
•To use HDMI ULTRA HD Deep Color, turn this function "On".
•If the connected device does not support Deep Color, the screen or sound may not work properly. In this case, set this function to off.
•The HDMI ULTRA HD Deep Color function can be set individually for each HDMI port.
Local Dimming
Maximizes the contrast ratio by making the bright areas of the screen brighter and the dark areas of the screen darker.
NOTE
•Turning this option Off may increase energy consumption.
Off Disables the feature.
On Enables Local Dimming.
Auto Adjusts the contrast ratio automatically according to the screen for high dynamic range.
Buzzer This feature lets you set the sound generated from Buzzer when your monitor powers on.
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Settings > General Description
OSD Lock This feature disables the configuration and adjustment of menus.
USB Upstream
Select the USB Upstream cable connection port to use the USB Hub of the monitor.
USB-C USB Upstream operates via ThunderboltTM 3 ( ) port.
USB-B USB Upstream operates via USB UP port.
Information The following display information will be shown; Model, Serial Number, Total Power On Time, Resolution.
Reset to Initial Settings Do you want to reset your settings? No Cancel the select.
Yes Returns to the default settings.
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TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged in? •Check if the power cord is correctly plugged into the power outlet.
Is the power LED on? •Check the power cable connection and press the power button.
Is the power on and the power LED displaying white? •Check that the connected input is enabled (Settings > Input).
Does the No Signal message appear or is the screen not
displayed?
•This is displayed when the signal cable between the PC and the monitor is missing or disconnected. Check the cable and reconnect it.
•If the screen is not displayed after reconnecting the signal cable, set as below.
-HDMI Input: Set HDMI ULTRA HD Deep Color to off in the monitor's General settings.
-DisplayPort Input: Set DisplayPort Version in the monitor's General settings to the same version as the connected external device.
Is the Out of Range message being displayed? •This occurs when signals transferred from the PC (graphics card) are out of the horizontal or vertical frequency range of the monitor. Please see the Product
Specification section of this manual to set the appropriate frequency.
Does the connected PC support ThunderboltTM 3 ( )
when the Thunderbolt cable is used?
•Use the USB-C Cable (sold separately) for the PC that only supports the USB-C output.
•Contact the manufacturer of the PC to see if the PC supports ThunderboltTM 3 ( ).
Screen display is unstable and shaky. / Images displayed on the monitor leave shadow trails.
Did you select the appropriate resolution? •If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may be flickering. Change the resolution to 1080p or the recommended
resolution.
•Not setting the graphics card to the recommended (optimal) resolution may result in blurred text, a dimmed screen, a truncated display area or
misalignment of the display.
•The setting methods may be different depending on the computer or operating system, and some resolutions may not be available depending on the
performance of the graphics card. If this is the case, contact the manufacturer of the computer or graphics card for assistance.
Does image sticking occur even when the monitor is
turned off?
•Displaying a still image for a prolonged time may cause damage to the screen, resulting in the retention of the image.
• To extend the lifetime of the monitor, use a screensaver.
Are there spots on the screen? •When using the monitor, pixilated spots (red, green, blue, white, or black) may appear on the screen. This is normal for an LCD screen. It is not an error, nor
is it related to the monitor's performance.
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Some features are disabled.
Are some functions not available when you press the
Menu button?
•The OSD is locked. Disable OSD Lock in General.
Do you see an "Unrecognized monitor, Plug and Play (VESA DDC) monitor found" message?
Have you installed the display driver? •Be sure to install the display driver from the display driver CD (or diskette) that comes with your display. Or, you can also download the driver from our web
site: http://www.lg.com.
•Make sure to check if the graphics card supports Plug and Play function.
No sound from the headphone port.
Are images displayed without sound? •Make sure that the headphone port connections are made properly.
•Try increasing the volume with the joystick.
•Set the audio output of the PC to the monitor you are using. (The settings may differ depending on the operating system (OS) you use.)
4K/5K resolution is unavailable.
Did you check the cable connection? •Check if the cable is properly connected.
•It is recommended to use the accessories supplied with the product.
Is the resolution and refresh rate set properly? •Set the proper resolution and refresh rate in the PC screen resolution settings or the player's option menu.
Does the connected external device support 4K/5K
resolution?
•It is available only on external devices that support 4K/5K resolution.
•Check if the connected external device supports 4K/5K resolution.
Is the HDMI ULTRA HD Deep Color function enabled?
(In case of 4K)
•Go to Settings > General > HDMI ULTRA HD Deep Color function to enable the function.
Did you set the DisplayPort Version to 1.4?
(In case of 5K)
•Go to Settings > General > DisplayPort Version to set the version to 1.4.
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PRODUCT SPECIFICATION
Color Depth 8-bit / 10-bit color is supported.
Resolution
HDMI Max Resolution 3840 x 2160 @ 60 Hz
Recommended Resolution 3440 x 1440 @ 60 Hz
USB-C Max Resolution 5120 x 2160 @ 60 Hz
Recommended Resolution 3440 x 1440 @ 60 Hz
ThunderboltTM 3 ( ) / DP Max Resolution 5120 x 2160 @ 60 Hz
Recommended Resolution 5120 x 2160 @ 60 Hz
Power Sources
Power Rating AC 100 ~ 240 V, 50-60 Hz, 2.3 A
Power Consumption
Operating Mode: 80 W (Typical)*
Sleep Mode: ≤ 1.2 W
Off Mode: ≤ 0.3 W
Environmental Conditions
Operating Conditions Temperature 0 °C to 40 °C (32 °F to 104 °F)
Humidity Less than 80 %
Storing Conditions Temperature -20 °C to 60 °C (-4 °F to 140 °F)
Humidity Less than 85 %
Dimensions
Monitor Size (Width x Height x Depth)
With Stand 816.9 x 559.0 x 234.3 (mm)
32.1 x 22.0 x 9.2 (inches)
Without Stand 816.9 x 359.8 x 57.1 (mm)
32.1 x 14.1 x 2.2 (inches)
Weight (Without Packaging) With Stand 9.0 kg (19.8 lbs)
Without Stand 7.7 kg (16.9 lbs)
Specifications are subject to change without notice.
* The Operating Mode of Power Consumption is measured with LGE test standard. (Full White pattern, Maximum resolution)
* The Power Consumption level can be different by operating condition and monitor setting.
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Factory Support Mode (Preset Mode, PC)
HDMI
Preset Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Polarity (H/V) Remarks
640 x 480 31.469 59.94 -/-
800 x 600 37.879 60.317 +/+
1024 x 768 48.363 60.0 -/-
1152 x 864 54.347 60.05 +/+
1280 x 720 45 60 +/+
1280 x 800 49.702 59.810 -/+
1280 x 1024 63.981 60.02 +/+
1280 x 2160 133.31 59.99 +/+ PBP (5:9)
1600 x 900 60.00 60.00 +/+
1920 x 1080 67.50 60 +/+
2560 x 2160 135.00 60 +/+ PBP (5:5)
2560 x 2160 67.50 30 +/+ PBP (5:5)
3440 x 1440 73.68 49.99 +/-
3440 x 1440 88.82 59.97 +/- HDMI Preferred timing
3840 x 2160 67.50 30 +/-
3840 x 2160 135 60 +/+
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USB-C / ThunderboltTM 3 ( ) / DP
Preset Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Polarity (H/V) Remarks
640 x 480 31.469 59.94 -/-
800 x 600 37.879 60.317 +/+
1024 x 768 48.363 60.0 -/-
1152 x 864 54.347 60.05 +/+
1280 x 720 45 60 +/+
1280 x 800 49.702 59.810 -/+
1280 x 1024 63.981 60.02 +/+
1280 x 2160 133.31 59.99 +/+ PBP (5:9)
1600 x 900 60.00 60.00 +/+
1920 x 1080 67.50 60 +/+
2560 x 2160 135.00 60 +/+ PBP (5:5)
2560 x 2160 67.5 30 +/- PBP (5:5)
3440 x 1440 73.68 49.99 +/-
3440 x 1440 88.82 59.97 +/- USB-C Preferred timing
3840 x 2160 66.66 30 +/-
3840 x 2160 133.31 60 +/-
5120 x 2160 65.664 30 +/-
5120 x 2160 133.187 60 +/- ThunderboltTM 3 ( ) / DP Preferred timing
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HDMI Timing (Video)
Preset Mode Horizontal Frequency (kHz) Vertical Frequency (Hz)
480p 31.5 60
720p 45 60
1080p 67.5 60
2160p 135 60
This device can be used in all regions. Read the owner's manual (CD) carefully and keep it at hand. Please note that the
label attached to the product provides information for technical support.
Model
Serial No.
Declaration of Conformity
Trade Name: LG
Model: 34WK95U, 34BK95U
Responsible Party: LG Electronics Inc.
Address: 1000 Sylvan Ave. Englewood Cliffs NJ 07632 U.S.A
TEL: 201-266-2534