Adjusting the screen resolution
Due to the nature of liquid crystal display (LCD) technology, the picture resolution is always
fixed. For the best display performance, please set the display to its maximum resolution that is
the same with the monitor aspect ratio. This is called “Native Resolution” or maximal resolution
– that is, the clearest picture. Lower resolutions are displayed on a full screen through an
interpolation circuit. Image blurring across pixel boundaries can occur with the interpolated
resolution depending upon the image type and its initial resolution.
To find out the monitor aspect ratio and native resolution of the purchased model, please check the Specification
on the website.
• To take full advantage of LCD technology you should select the native resolution setting of your PC screen as
described below. Be aware that not all PC video cards provide this resolution value. If yours doesn't, check
with the video card manufacturer's website for an updated driver for your particular model PC video card
which supports this resolution. Software video drivers are often updated and available for new hardware video
resolutions. If necessary, you may need to replace and update the PC video card hardware to be able to
support the native resolution of the monitor.
• Depending on the operating system on your PC, different procedures should be followed to adjust the screen
resolution. Refer to the help document of your operating system for details.
1. Open Display Properties and select the Settings tab.
Yo u c a n o p e n Display Properties by right-clicking on the Windows desktop and selecting
Properties from the pop-up menu.
2. Use the slider in the ‘Screen area’ section to adjust the screen resolution.
Select the recommended resolution (maximum resolution) then click Apply.
If you select some other resolution, be aware that this other resolution is interpolated and may not accurately
display the screen image as well as it could do at the native resolution setting.
3. Click OK then Yes.
4. Close the Display Properties window.
If your input source does not provide an image which is the same with the monitor aspect ratio,
the displayed image may appear stretched or distorted. To maintain the original aspect ratio,
image scaling options can be found in the “Display Mode” adjustment. See the user manual for
more information.
22 Adjusting the screen resolution
Adjusting the screen refresh rate
You don’t have to choose the highest possible refresh rate on an LCD display, because it is not
technically possible for an LCD display to flicker. The best results are obtained by using the
factory modes already set in your computer.
Depending on the operating system on your PC, different procedures should be followed to adjust the screen
resolution. Refer to the help document of your operating system for details.
1. Double click the Display icon in Control Panel.
2. From the Display Properties window, select the Settings tab and click the Advanced
button.
3. Select the Adapter tab, and select an appropriate refresh rate to match one of the
applicable factory modes as listed in the specification table.
4. Click Change, OK, then Yes.
5. Close the Display Properties window.
23 Adjusting the screen refresh rate
Preset display modes
Models with UHD panel
Timing support
PC / Video signal support Input port
Resolution
640x480 60 v v v v v v
640x480 75 v v v
720x400 70 v v v
720x480 60 v v v
800x600 60 v v v
800x600 75 v v v
832x624 75 v v v
1024x768 60 v v v
1024x768 75 v v v
1152x870 75 v v v
1280x720 50 v v v
1280x720 60 v v v v v v
1280x800 60 v v v
1280x1024 60 v v v
1280x1024 75 v v v
1680x1050 60 v v v
1600x900 60 v v v
1920x1080 24 v v v
1920x1080 25 v v v
1920x1080 30 v v v
1920x1080 50 v v v
1920x1080 60 v v v v v v
2560x1440 60 v v v
3840x2160 24 v v v
3840x2160 25 v v v
3840x2160 30 v v v
3840x2160 50 v v v
3840x2160 60 v v v v v v
Frame frequency
(Hz)
• To obtain the best image quality, refer to the above table to set the timing and the resolution of the input
source.
DisplayPort (V1.4) HDMI (V2.0) USB-C™
PC timing Video timing PC timing Video timing PC Timing Video Timing
• To make sure the above timing works, check the compatibility and specifications of your graphic card first.
• The timing needs to work with the specified input ports. Available input ports and signals vary by model.
24 Preset display modes
4K UHD (3840x2160) video input
4/30/2020
SW271
Color space YCbCr 4:2:0
Max. bit 8 bit 10 bit 12 bit
Frame frequency 24, 25, 30 50, 60 24, 25, 30 50, 60 24, 25, 30 50, 60
HDMI vvvvv(*)v(*)
DisplayPort vvvvv(*)v(*)
USB-C™
(DP Alt mode)
Color space YCbCr 4:2:2 YCbCr 4:4:4 / RGB 4:4:4
Max. bit 8 bit 10 bit 8 bit 10 bit
Frame frequency 24, 25, 30 50, 60 24, 25, 30 50, 60 24, 25, 30 50, 60 24, 25, 30 60
HDMI vvvvvvv
DisplayPort vvvvvvvv
USB-C™
(DP Alt mode)
vvvvvvvv
*: The monitor receives 12-bit data and displays 10-bit colors.
Image disruption may occur as a result of signal frequency differences from graphic cards which
do not correspond with the usual standard. This is not, however, an error. You may improve this
situation by altering an automatic setting or by manually changing the phase setting and the pixel
frequency from the “DISPLAY” menu.
vvvvv(*)v(*)
25 Preset display modes
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