Samsung showed their 40 inch OLED displaya the IMID 2005 (International Meeting on Information Display).

The Samsung 40 inch Active Matrix OLED is the worlds largest and first to be developed as a single-sheet glass plate with WXGA (1280 x 800 pixels) HD-class resolution using an amorphous silicon backplane. The display has a maximum brightness of 600 nits, a shade ratio (black-and-white contrast ratio) of at least 5,000:1, and color saturation of at least 80%. Its ultra-slim design allows for the development of TV sets that are a only 3cm thick or less.
More details in Samsung press-release.

Korean news site AVing has several photos from the IMID 2005 exhibition. Most of them of course featuring booth babes.