Is this a dead pixel? LG 4K Ultrafine display

[HiFiGuy528]

I see this in White, RED, and Blue, but not black and it does not flicker or move. There are three of these dots on the display, no it's not dirt.

Pls. educate me...

 

[MrX8503]

That's more like a cluster rather than A pixel. It looks like residue/dirt to me.

 

[HiFiGuy528]

That's more like a cluster rather than A pixel. It looks like residue/dirt to me.

I was under the impressions that dead pixel blinks. If it's dust inside, is it possible to clean?

Anyone else has advice on what's wrong with my display? I won't hate to ship tp LG to have them send it right back to me "no problem found".