Yes you can do this....and if I do something similar with mine I can pretty much get rid of it on a black screen....but my point is.....I don't have to.....because I don't notice it at all while watching TV or gaming.Turn down default brightness to 80% and don't bother. My VG27AQL1A with IPS panel also have little bleeding at edges on 100% brightness. Changed default brightness to 70% and default contrast to 80% and all is fine.