The smaller the dimming zones, the lesser this effect becomes. Theoretically, you can have dimming zones of just 1 pixel in size. People have even “succeeded” in doing this by bonding two LCD panels together, with one acting as the local dimming solution.
Dimming zones creat halo affects when there white next to black. Source: typing on my 12.9 iPad lcd with dimming zones.
The smaller the dimming zones, the lesser this effect becomes. Theoretically, you can have dimming zones of just 1 pixel in size. People have even “succeeded” in doing this by bonding two LCD panels together, with one acting as the local dimming solution.