I don't think LCD and OLED share any manufacturing processes at all. LCD involves many individual layers (color, LCD, lamp) that are manufactured separately then assembled.
OLED involves a much simpler inkjet printing process, putting the dots directly onto a surface with the grid of wire contacts. One of the attractive aspects for OLED, and the reason prices are likely to come way down in the future is the cheapness of the inkjet process. It doesn't require any cleanrooms or anything, like other technologies do. The surface the dots are printed on can be anything, even flexible plastic. Take a look at these videos:
http://www.youtube.com/watch?v=Rn10mRyBqAE&NR=1
http://www.youtube.com/watch?v=JFDyWGstZ-g
OLED really has absolutely ZERO in common with LCD.
