Originally Posted by Malinkadink
How likely would this even be the case that the newer panels are less issue prone? BLB is a byproduct of the frame applying too much pressure on the panel assembly and not inherently a problem with the actual LCD itself. Glow is also just the nature of IPS but it will vary from one IPS to another so they can perhaps improve on it here. Defective pixels are also a reality for displays no matter what, and they don't want to up the QC as that will up their costs, so you're left with doing exchanges until you get a pixel perfect one.
The area i'd like to see most improvements is pixel responsiveness, anything that eeks closer to TN pixel response would be appreciated.
Glow varies even between M270DAN2.6 panels, a lottery, even more so between different IPS panels and AHVA vs PLS vs IPS vs... IGZO? vs ... It's possible to make IPS type panel with minimal glow or even with ATW polarizer and near no glow.
BLB on XF270HUA is caused from my experience by panel construction sure to some degree especially when it comes to general yellowing and bleed across large areas that is faint. The spots around edges are not always a big problem on XF270HUA with the frame less design, there are some problematic spots and those affect all units. So yes they can improve the panel construction AND their "frameless" frame.
Dead pixels... up to panel makers to fine tune their machines, similar to yield from making silicon chips. But they don't tune it out and sell it all anyway as the panels "work" even if they are defective unlike defective silicon chips that do not work or parts of them have to be disabled an equivalent for panels would be for them to cut the panels into smaller pieces and remove defects that way but that's probably not feasible with LCDs as each panel is likely made at their size and if it's defective the whole thing should get scrapped. For stuck pixel defects though that is only 1 layer of the whole panel, they don't test it probably before assembling them into the whole package with metal frame and then it's too late and higher loses to scrap the whole piece.
I would be surprised if AUO even scraps any panels at all, they probably just sell it all as different grades if they do any grading even.
They can improve, both panel makers and monitor makers.