During CES, both Samsung and LG introduced bendable TVs. LG showed a 77" bendable OLEDs, while Samsung showed 55" bendable OLEDs and a 85" bendable LCD.
DisplaySearch posts that they were surprised at first to see a bendable LCD as they expected such designs to be achievable with OLEDs only. According to DisplaySearch, only the LCD panel is bendable in Samsung's prototype. The backlight remains flat in Samsung's TV. This can create lighting non uniformity. There are some solutions, but it seems that one drawback is that the TV can only be used in two modes - flat or curved. You cannot choose your own curvature.
OLED bendable TVs do not have this restriction. From DisplaySearch's article, it also seems to me that this is a very expensive design (they speculate that Samsung actually uses two LED arrays, one used for curved mode and one for flat mode). As DipslaySearch says, this leads many to conclude that OLEDs are the only real bendable TVs.