you can check out the manufacturer and the display model by
open system preferences, displays, colours, open profile, scroll down to mmod (last) and open.
first is manufacturer, mine is 610
second is model type, mine is A020
still do not know if this result means samsung or lg, maybe the linked thread i post here can help us soon.
to find out the date of build just copy and paste the following to the terminal and press return.
ioreg -l | grep IODisplayEDID | sed 's/^.*<//g' | cut -b 33-36
the result is the date, your display was build (mine 0417). 04 means week 4 and 17 has to be calculated in a special way which i did not understand to be honest but you can read and learn it in the thread were i found all this.
https://discussions.apple.com/thread/5481839?start=1710&tstart=0
i just know my displays build date (week 4 2013) because a forum member had the same terminal result like me and he could work out the correct date.
feel free to join the discussion there, everything is explained very well and a lot of people share their opinions about image retention with the brandnew retinas.
i am just a poor devil when it comes to computers and i hope OLI.S can handle things better
edit:
here is how you calculate the terminal result to get your displays build date !
First two characters of the result are the week number and the last two are the number of years since 1990 (both in hexadecimal). You can use http://easycalculation.com/hex-converter.php to convert to decimal. For example, that command gives me "3016", which corresponds to week 48 of 2012 (1990 + 22).