Few days ago I went to Itsu to grab some sushis (I do not recomand the California rolls) and wha! Surprise! Letters in a grid!
Ok it's not south Corean but I thought you could use this example which is working pretty well, as a basis for your project!
Then that's the declension on Renault logotype on a grid, also. I did it in on of my screenprint internship.
Hope it helps!
Good luck!