Samsung’s foldable screen earns US military grade certification

Seen is Samsung Display's 7.6-inch foldable OLED. The company said Monday that its foldable screen passed the U.S. Department of Defense's durability test to earn MIL-STD 810G certification. Courtesy of Samsung Display

Seen is Samsung Display’s 7.6-inch foldable OLED. The company said Monday that its foldable screen passed the U.S. Department of Defense’s durability test to earn MIL-STD 810G certification. Courtesy of Samsung Display

By Baek Byung-yeul

Samsung Display obtained a military certification for its foldable OLED, the first for a foldable screen, passing the U.S. Department of Defense’s durability test, the display maker said Monday.

The company said it earned the MIL-STD 810G certification, a military standard certification recognized by the U.S. Defense Department, with its 7-inch foldable display used in the latest Samsung foldables.

To verify the panel’s durability, Samsung Display requested UL Solutions, a global safety science company, to conduct tests on four criteria, such as temperature and shock, which can be encountered in daily and outdoor activities.

The tests found that the foldable display functioned normally even after being exposed to the extreme cold of minus 10 degrees Celsius for four hours with water sprayed on the surface.

It also didn’t experience a malfunction in an alternating extreme temperature test, in which the display was exposed to temperature extremes ranging between minus 32 degrees Celsius and 63 degrees Celsius in sequence for two hours each, repeated three times over 12 hours.

The safety company also conducted shock tests in which they dropped the panel 26 times from a height of 1.22 meters, which is typically the height at which people use mobile devices, making it fall in different directions in each test.

The company also rotated the product at a speed where it was exposed to 10.5 times the standard gravity and found that it didn’t break.

“This military certification confirms that Samsung Display’s foldable screen has a strong technical advantage, which has become the next-generation form factor,” an official from Samsung Display’s marketing team said. “We expect the foldable display to be used in a wider variety of devices and environments, breaking the prejudice that foldable screens have poor durability.”

Samsung Display has been solidifying its lead in the foldable display market based on the intellectual property it has been accumulating since 2012. The company said it owns about 1,800 patents related to foldable technology, four times as many as its rivals.

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