How do you check what screen you have?
I too would like to know this. Do you need to look up what drivers are installed or something?
Edit: Found it:
So if you can run the following command in terminal it will tell you who the manufacturer is:
ioreg -lw0 | grep \"EDID\" | sed "/[^<]*</s///" | xxd -p -r | strings -6
Following is an interpretation of the string that is returned telling you who the manufacturer is.
LPXXXX = LG
LSNXXXX = Samsung
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