LCD monitor display fuzzy and not sharp
An LCD display is not crisp and sharp but fuzzy.
Possible Causes and Remedies:
- Refresh rate too high. CRT
monitors normally give a more stable image (with less
flickering) with a high refresh rate. This is not necessary
with LCD monitors, and setting the refresh rate too high
will degrade the image quality. Set the refresh rate to
- Display resolution different to monitor's native resolution.
LCD monitors have a fixed number of pixels vertically and
horizontally - this is its native resolution. If the current
display mode is set to a lower resolution then there will be
some interpolation going on. For the crispest display set
the display resolution the same as the monitors resolution.
For example, if the LCD display supports up to 1024x768 then
set the Windows display resolution to 1024x768.
- Poor quality VGA extension cable. A poor quality VGA
extension cable (or KVM
switch) will give signal loss which will degrade the
image. (This can be characterised by ghosting and shadows.)
If the image is crisp when the LCD monitor is plugged in
directly to the pc but not when plugged in via a VGA
extension cable or KVM switch then the cable/switch is the
- If using Internet Explorer 7 or later then try switching off
ClearType. ClearType attempts to improve readability on LCD
monitors but cause the text to look less than sharp and
These notes have been tested with Windows 2000,
XP, Vista and 2003.
About the author: Brian Cryer
is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.