9C61 and 9C62
I have compared and tested both the 9C61 and 9C62 screens on the 17 in MBP models.
First off, has anyone found out who makes the 9C62 panel?
The 9C61 is indeed made by Samsung. See posts 71 and 75 from here:
https://forums.macrumors.com/threads/265751/
Having used both, I can say that
the 9C61 screen is far superior to the 9C62.
My first MBP had the 9C61 screen. Unfortunately it was installed poorly and had severe vignetting in the corners and a couple dead pixels. Tests revealed some banding and a little bit of unevenness in backlighting, particularly along the bottom strip which had a slight glow to it.
Compared to the 9C62 however, the colors are quite deep and rich, and the text is very crisp. If I hadn't got a bad panel, I would have been satisfied with this screen, even with the slow 25 ms response time and the support for 6-bit color (262144 colors). There was no graininess to speak of (with dithering on).
I returned it and the replacement model came with a 9C62 screen, which unfortunately is worse. It is brighter than the 9C61, but the contrast ratio is horrible. Blacks looks almost gray on this screen. Colors are relatively washed out and the text is not as crisp and the other panel. Worse, the banding is so bad with certain colors it's unbearable. Gradients are generally not as smooth as on the 9C61 (which itself isn't a star, but passable).
But the worst part is the backlight leaking. This screen leaks considerably. The 9C61 is very clear and black around the edges (on a black test screen), while the 9C62 leaks a lot of light and you can actually see the lights if you peek into the edges of the screen against the frame.
Unfortunately I don't know yet who makes the 9C62 screen, so I don't have specs to compare with the Samsung.
But I can say for sure that once you've seen the two side by side, there is absolutely no doubt that the 9C61 is much much better, with purer, richer colors, much better contrast, and crisper text. The panel itself feels stronger (more like glass rather than plastic, to give some idea of what I mean). The 9C62 feels flimsier.
For those looking to buy a C2D 17 inch MBP, I would personally only get one with a 9C61 screen (Samsung) that has been properly installed (i.e. no or little vignetting or other dark splotches and no dead pixels).
It may be difficult to do this but if you are in an Apple store you may have some luck persuading them to help you find a good one. Otherwise, if you care about what you look at, I'd wait until something better comes out!