Samsung Display recently opened its secret laboratory in South Korea to show how the company develops and tests next-generation foldable screens.

This glimpse into the company's research and development process highlights the engineering challenges of creating flexible hardware that can withstand years of daily use. As foldable phones move from niche luxury items to mainstream devices, durability remains the primary concern for consumers and manufacturers alike.

CNET Senior Tech Reporter Abrar Al-Heeti visited the facility, commonly identified as the Suwon campus, for a behind-the-scenes tour. The visit focused on the specialized equipment used to build and validate the integrity of foldable panels before they are integrated into consumer smartphones.

Central to the lab's operation is a rigorous stress-testing regime designed to simulate extreme wear. According to reports from the visit, Samsung stress-tests its foldable displays up to 500,000 folds [1]. These automated tests ensure that the organic light-emitting diode (OLED) layers, and the flexible substrates, do not crack or degrade over time.

The tour demonstrated Samsung's broader vision for the future of mobile computing. By showcasing the secret lab, the company aims to provide transparency regarding the longevity of its hardware, a critical point of contention in the early years of the foldable market.

The facility serves as a hub for both prototyping and quality assurance. The equipment used in the lab allows engineers to identify failure points in the hinge and screen interface, which are the most vulnerable parts of any foldable device. This iterative process is what allows the company to refine the thickness and flexibility of the screen materials.

Samsung stress-tests its foldable displays up to 500,000 folds.

The emphasis on extreme stress-testing suggests that Samsung is shifting its focus from the novelty of foldable screens to long-term reliability. By simulating half a million folds, the company is attempting to neutralize consumer anxiety regarding screen failure, which is essential for the technology to achieve total market penetration and replace traditional slab smartphones.