Samsung Display today said it has developed an unbreakable smartphone panel, and that the panel has been certified by the Underwriters Laboratories. The flexible OLED panel has an unbreakable substrate and an overlay window adhered to the front, says Samsung. The Underwriter's Laboratory said the panel surpasses military specifications. It handled repeated drops from 1.2 meters onto all edges, as well as extreme high (169F) and low (-26F) temperatures. The display panel was also dropped from 1.8 meters with no damage. Samsung Display says the OLED panel can be used on smartphones, in-car displays, military devices, portable game consoles, and tablets. "The fortified plastic window is especially suitable for portable electronic devices not only because of its unbreakable characteristics, but also because of its lightweight, transmissivity and hardness, which are all very similar to glass," said Samsung Display's Hojung Kim. Samsung did not say when the unbreakable OLED panel will reach devices. Samsung is expected to announce its next flagship phone, the Galaxy Note 9, at an event in early August.