Certain types of LCD panels would benefit more from being curved because of poor viewing angles. Even then it would only benefit those sitting really close. I don't really see the point here. Curving an OLED would only seem to diminish its viewing angle, which is important for a large screen TV. Although from the picture, the curve looks to be so slight it is, again, pointless.
The only time it would make sense to me would be a 180 degree curved computer monitor.