In the frame of the EC IST European funded project called LCOS4LCOS1, a consortium of six European partners has developed a new 0.83inch 1920 x 1080 pixels liquid crystal on silicon display device mainly targeting single LCOS HDTV rear projection but also usable for other applications like goggles or viewfinders. We describe in this paper the original device architecture and performances inside a color sequential single panel projection system.