AHVA is an IPS Technology and for all intents and purposes is the same thing, just made by a different panel manufacturer. They don’t have the same contrast shifts (including off centre black crush) that VA panels have at all. Maybe you’re getting it confused with AMVA which IS a VA technology. There’s no practical noticeable difference between similarly spec’d IPS panels from LG Display and AHVA panels from AUO
Nope not getting confused is AHVA
The screens are even marked as IPS in their spec.
I have 2 IPS screens in front of me now, no contrast shift, I have 2 VA screens, contrast shift, and 3 AHVA (claimed IPS) screens, contrast shift.
When I got my first AHVA screen the contrast shift was immediatly obvious but was a £120 screen and still way better than TN so didnt think much of it. Then when I got my benq gw2765ht (here is model number so you can see its not AMVA) I noticed the same thing but a bit less severe, however this was not a £120 screen and cost more than my dell 2209WA which was a proper IPS screen. The dell 2209WA a low end budget IPS screen is still light years ahead of these AHVA panels, has anyone here actually put a IPS and AHVA side by side or just saying its IPS because ASUS etc. tell you so?
My sister has a IPS tv (proper LGS IPS), and again, no contrast shift, you can go extreme on the angle and the picture is as good as head on, on a AHVA you only need to start standing up and contrast will shift (reduction).
Regardless of the technical performance, a AHVA panel been marked as an IPS to a paying customer I think is on dodgy grounds, unless it is a IPS at manufacturing (not similar but actual IPS) then the screen should not be put as IPS on its tech sheet. They could maybe put "emulated IPS" But not just "IPS".
sunbearnz seems to have noticed a difference as well here
https://www.reddit.com/r/Monitors/comments/5xj9ym/difference_between_ahva_vs_ips/
An example I could give I suppose is selling tesco branded crisps as walkers crisps simply because tesco feel they have have managed to make them taste and look "similar", would you be happy with that?
I suppose its possible some bait and switch has occured in all 3 displays I got here so they VA going against what was spec'd at launch but on my benq and the £120 monitor I went to the engineer menu which displays an AU optronics AHVA panel model number.