LG 49LS73B User Guide

Page of 72
45
TROUBLESHOOTING
ENGLISH
What is image sticking?
When the LCD panel displays a static image 
for an extended period of time, it can cause a 
voltage difference between the electrodes that 
operate the liquid crystals. When the voltage 
difference between the electrodes builds up 
over time, liquid crystals have a tendency to 
remain aligned in one direction. During this 
process, a previously displayed image remains 
visible. This phenomenon is referred to as 
image sticking.
BM
BM
BM
CF
CF
CF
OC
PI
PI
TFT Layers
Glass
Glass
LC
CF
I  D : UPM123
PW : ******
I  D : UPM123
PW : ******
ITO or MoTi Pixel Layer
Recommended operating conditions
1
  Change the background and the character 
colors using the same time interval.
When changing colors, using complementary 
colors helps to prevent image sticking.
2
  Change the image using the same time 
interval.
Make sure that the characters or images 
before changing the image remain in the same 
location after changing the image.
 
Image sticking does not occur when using constantly changing images but may occur when using 
a fixed image for an extended period of time. Therefore, it is recommended that you use the 
instructions below to decrease the likelihood of image sticking occurring when using a fixed image. 
It is recommended that you change the screen at least once every 
12 hours at the very minimum; if 
done more frequently, the prevention of image sticking is more effective.
CAUTION
ID: UPM 123 
PW: ****
ID: UPM 123 
PW: ****