Type this into terminal:
ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6
and if I remember correctly
LPXXXX = LG
LSNXXXX = Samsung
Honestly, I don't think the IR is as big of an issue as everyone think. I have an LG display and I haven't notice any IR, but then again I don't go looking for it. If it becomes a problem during my normal usage, I will take it into an Apple store.