IPS vs PLS (Help!)

Solution
IPS is patented and trademarked by LG.

Samsung's equivalent is PLS.

AUO's equivalent is AHVA.

They are for practical purposes identical. They accomplish the same thing (wider viewing angles without color shift) without violating each others' patents. IPS just happened to be the first one to market, so all PLS and AHVA screens are colloquially called IPS. It's just that Samsung and AUO cannot officially advertise their screens as being IPS since LG owns the trademark on the term.

I've noticed slight differences in the technologies, but I'm unsure how much of it is due to the tech and how much due to poor manufacturing. The blacks on IPS panels seem to brighten up (becoming almost a light grey) when viewing the screen from a 45...


Thanks for the response! I have updated the link above it should work now. In case it doesn't, the models are:

1. Asus VN248H-P

2. Samsung LS24D590PL/ZC
 
IPS is patented and trademarked by LG.

Samsung's equivalent is PLS.

AUO's equivalent is AHVA.

They are for practical purposes identical. They accomplish the same thing (wider viewing angles without color shift) without violating each others' patents. IPS just happened to be the first one to market, so all PLS and AHVA screens are colloquially called IPS. It's just that Samsung and AUO cannot officially advertise their screens as being IPS since LG owns the trademark on the term.

I've noticed slight differences in the technologies, but I'm unsure how much of it is due to the tech and how much due to poor manufacturing. The blacks on IPS panels seem to brighten up (becoming almost a light grey) when viewing the screen from a 45 degree diagonal. This is more an issue with phones and tablets than monitors. PLS seems to have the best colors and uniformity, but is dimmer. Nearly all the AHVA screens I've seen suffer from backlight bleed. My laptop uses an AUO AHVA screen, but I'm fortunately that it has very little backlight bleed. The first one I RMA'ed for a GPU problem had bad backlight bleed.
 
Solution