By Kim Minji and Yoon Sojung 

Samsung Display on Sept. 16 released a foldable OLED display panel with the world's smallest curvature of 1.4R for a smartphone.

The 1.4R rating refers to the curvature of a 1.4-mm radius circle. The smaller the figure, the more perfectly a device can be folded.

Samsung Display's breakthrough of the smallest OLED curvature on the market means a near-perfect fold for such smartphones.

This is Samsung's third foldable OLED panel and has a resolution of 2,208×1,768 pixels and a 7.6-inch screen, bigger than previous models.

The new display has received praise for its slim and sleek design thanks to the lower curvature rating of the folding area. It was first applied to the Galaxy Z Fold 2 of Samsung Electronics launched last month.

LG Electronics has also introduced a smartphone innovation through the LG Wing.

Released online on Sept. 14, the new model has a rotatable main display that enables multiple shapes.

The LG Wing can be used as an ordinary smartphone but when needed, the main screen can be moved clockwise to unveil the hidden 4-inch secondary screen that can be used with the main one. One app can run both screens or one app can be used for each screen.

Equipped with Gimbal Motion Camera for the first time in the world, the Wing allows more stable and gentle video shooting.

From next month, the model will be launched in Korea, North America and Europe in phases.

kimmj7725@korea.kr