No, it was much longer ago, especially for pre-RGB applications. OLEDs came about in the late 80's, and mono displays started showing up in the 90s (I think one

No, it was much longer ago, especially for pre-RGB applications. OLEDs came about in the late 80's, and mono displays started showing up in the 90s (I think one of my early flip phones had an OLED exterior display). RGB units were demonstrated around 2000 and commercialized in limited uses in the very early 2000's.