LG Display developed a 5.2" Full-HD LCD panel that is only 2.2 mm thick. They say this is the world's thinnest Full-HD LCD panel. It's also the narrowest panel as it has a 2.3 mm bezel. This is the first panel to use LGD's Advanced One-Glass-Solution (OGS).
LGD says that Dual Flexible Printed Circuits, superior to a single circuit, have been inserted between the panel and touch film, reducing the number of lines on the panel by more than 30%. Utilization of a direct bonding system has also resulted in Optical Clear Resin between the panel and touch film for greater brightness.
This is impressive for an LCD, but OLEDs are much thinner. In fact 6" Full-HD glass based OLED will be only 1.5 mm thick. A plastic-based AMOLED will be only 0.5 mm thick - less than a quarter than even the thinnest LCD.