A:Answer Since the Samsung rep danced around my question, I did my own research. It still very early in the product cycle but it seems all S90H's sold in the USA use WRGB OLED panels from LG Display.
The following model number, QN77S90HAEXZA is a 77" model. The last 4 letters EXZA indicate WRGB OLED.
The Samsung S95H model are all QD-OLED.
