Pixel pattern types

Hey bros and broettes!!

There’s a specific type of pixel pattern I’m looking for: it’s the type of tile that you apply over a picture to interlace it, graph it, dot it, slash it, etc.
It is sort of is similar to a dot but more of a circle/some shape (I think), I’m not really sure… it’s used here and there, but I wasn’t able to find an example for you.

Maybe you guys can post some ideas on what you think I could be talking about? Th to the anks!