Samsung Electronics plans to roll out smartphones with slightly curved screens yet this year, an official of the Seoul-based tech giant said. Park Sang-jin, the chief executive officer of Samsung SDI, said the company plans to release the new portable device that adopts plastic organic light-emitting diode panels, Yonhap reported Wednesday. The release is planned for the fourth quarter. \"As plastic liquid crystal displays are strong enough to neither shatter even when dropped on the ground nor need frames, it is possible to produce devices with unique designs,\" Park said. \"The curved panels are not flexible.\" Samsung SDI provides battery products used in the tech giant\'s smartphones and other portable devices, Yonhap said. LG Electronics Inc., Samsung\'s local rival, had announced it also plans to release plastic OLED-based smartphones in the fourth quarter, but with flat screens.