Hello, over the past few years, I have used various Lenovo laptops and 4K LCD screens from established monitor companies like LG and BenQ. However, they always have some sort of backlight bleed, IPS glow and/or blocky artifacts when playing movies with dark background. Apple's products, on the other hand, have no such issues. Is getting a display without such issues for the PC a lottery? The so-called "fix" by lowering the brightness or avoiding the use of monitor in a dark environment to hide the issues is kind of defeating manufacturer's claims that their monitors can produce high brightness level and good for movie watching. I read that OLED displays have not such issue but I hesitate to buy them due to potential burn in.
IPS glow is part of the nature of the technology. Maybe Apple has more stringent requirements so the glow is more even so you don't notice it, but every IPS panel is going to have this problem.
Also the block artifacts in videos during dark scenes is also the nature of the beast. Your eyes are more sensitive to changes with darker colors than brighter ones, and for most video there's only 256 levels of brightness to choose from. There are ways to change this with the so-called gamma correction curve (you might've seen this in games)
In any case, this video explains it better than I can:
Are panels using local dimming better than those using IPS backlight or nano-IPS?
IPS is not a backlight technology.
As for local dimming, how much better it can improve image quality largely depends on how many lighting zones it has, otherwise you get noticeable so-called haloing or blooming around areas of high contrast. I would argue for this to not be as distracting, the TV needs at least 1000 zones for a 4K display.
More ramblings on displays
With regards to IPS glow, unless you're viewing dark content in a dark room, it's not that noticeable anyway. And if you get an LED strip to put behind the monitor so it lights up whats behind it, that can increase the apparent ambient brightness such that your eyes don't really perceive it anymore. But if your goal is to have a cinematic experience, then IPS is not
the display type to use.
With regards to OLED and burn-in, Rtings.com did a test
starting from 2017 that lasted for basically 2 years, where they they were on for 20 hours a day (broken up into 4 separate times with an hour of "resting"). This is basically the equivalent about 5 hours per day of use for 5 years. The only significant amount of burn-in that happened was when showing something that had a bright solid color in the same spot. OLED panel technology has improved over the years to the point where burn-in is less of an issue. And in my own experience with OLED, I owned three devices that I daily drove: a Zune HD (5 or so years of use), a Moto X (2 years), and a Samsung Galaxy S10+ (3 years). Despite all of them having either a static image or something they displayed constantly, none of them appeared to have significant burn-in by the time they were retired.
I mean, we've used CRTs for decades without concern, even when you consider that Windows introduced a static element to the screen since 1995.