Hyundai ImageQuest HQP421SR - Manual (Page 4)

Important Tips
Image Retention effect(Image Sticking)

1. Cause :
- Image Retention Effect could be come from displaying a still picture in certain period of time with at
a certain area continuously, as the feature of Plasma Display Panel.
- This is the same matters to other companies' PDP products, too.
2. Preventation :
- To avoid this matter, use the product after reducing brightness and contrast, especially a still image
is displaying for a long time. (Example : Contrast 50, Brightness 50 - See the page 36)
Once Image retention occurs, change the mode into Video mode which displays more motion
pictures. It will help reduce this matter, but cannot completely eliminate once it occurs.
It makes the screen’s brightness worse as displaying a fixed pattern often.
- Use the fuction, Pixel Shift in still image, in our PDP products.
(For more details, see the below page 65)
3. Solution :
- The temporary image sticking would decrease with displaying Full-White pattern after 10 hours.
- The permanent image sticking couldn’t take off under the latest technology even though being in its
manufacturer.
4. Notice :
- It is very important to notify every buyer/customer this information and All Branches/Buyers
/Customers should be fully aware of this.
- Image Sticking in PDP products couldn’t get the support from a manufacturer, and does not come
under the warranty.
Second Tip

• Pixel Defect :
Plasma Display Panel(PDP) is made of a group of refined pixels (cells). The Panel, in which 99.9% of
pixels have approved, is a normal product. Therefore, only a few of abnormal pixels may appear,
however, this has no influence upon PDP performance.