When it comes to local dimming, the rule really is the more dimming zones, the better. More dimming zones allow TVs to better control backlighting and produce deeper, more natural...
So, the question is: how many dimming zones does a TV actually need to eliminate haloing? An article published by Optica Publishing Group found that to make the halo effect basically invisible, an LCD TV with a contrast ratio of around 5000:1 needs roughly 200 local dimming zones.
The relationship between dimming zones and HDR quality is more nuanced than you might think. While having more zones is generally a good thing, it's not the only factor that creates a stunning HDR experience.

On LCD monitors, local dimming zones are groups of backlight LEDs controlled independently, so one area can dim while another stays bright. This is the core trick that helps HDR scenes show bright effects without washing out the entire image.
Samsung ODYSSEY Neo G8 32" 1,196 Local Dimming Zones CES New in 2022ODYSSEY NEO G8 New Details 1,196 Local Dimming Zones PreOrders Availablehttps://www.overc...

The best Mini LED monitor we've tested so far is the Samsung Odyssey Neo G8 S32BG85. It's a premium 4k, 32-inch monitor that features 1,196 dimming zones.