To correct some information, which seems to me inaccurate:
First of all, I don't know of Samsung ever manufacturing a 15" notebook IPS panel (not sure they have any IPS panels at all). I don't know where the guys on Thinkwiki got their info, but the Thinkpad service parts (
http://www-307.ibm.com/pc/support/site. ... d=TPAD-FRU) only listed IDTech/LG as manufacturers for the SXGA+ IPS and IDTech/BoeHydis for the UXGA IPS.
The LG panel was already used in the T4x series (I have it on my T42). But back then, IDTech panels were also used. With time, Lenovo started using less IDTech and more LG/Hydis, and on the T60 series, IDTech is not listed as an option at all.
The reasons to ditch IDTech are unknown to me, but complains about severe ghosting, darkening and shadowing could be one of the reasons. The LG, however, has complains about sparkling. On average, I assume that the LG panels are by no means worse than the IDTech panels and probably better.
Not a single person who looked at my laptop ever complained about the sparkle effect, so perhaps it _is_ exaggerated on GeorgeWang's unit.
GeorgeWang: Have you asked other people to look at your screen and tell you whether they notice the sparkle/noise effect?
Puppy: Assuming you have Access IBM installed, can you press the Access IBM button, then go to System Information -> Warranty and Parts? It should tell you exactly which panel you have, including FRU number and description.