Samsung Display Commercializes World's Smallest Curvature Foldable OLED... Applied to 'Galaxy Z Fold2'

Applied World's First 1.4R Foldable OLED with Foldable Optimization Technology on 'Galaxy Z Fold2'

[Asia Economy Reporter Kim Hyewon] Samsung Display announced on the 16th that it has succeeded in commercializing the industry's smallest curvature (R) 1.4R foldable OLED.

1.4R indicates the degree of bending of a circle with a radius of 1.4mm, and the smaller the curvature value, the less space there is in the folded part, meaning it can be considered perfectly folded.

The 1.4R foldable OLED recently introduced by Samsung Display has the smallest curvature among foldable products commercialized to date.

As Samsung Display's third foldable OLED, it features a resolution of '2208x1768' and a size of 7.6 inches. Compared to its predecessor, the screen is larger, and by using ultra-thin glass (UTG) as the cover window, it achieves greater durability and higher aesthetic completeness compared to transparent polyimide.

In particular, by lowering the curvature of the folding part to 1.4R, it enabled a sleek and slim foldable smartphone design. This product was first applied to Samsung Electronics' recently unveiled 'Galaxy Z Fold2'.

Generally, a panel composed of multiple layers experiences compressive stress on the front side and tensile stress on the back side simultaneously when folded. The collision of these opposing forces affecting the panel's structure is called 'folding stress.'

Samsung Display explained that to overcome this folding stress, it optimized technologies such as materials, design, and modules so that the laminated structure cushions external forces when the panel is folded.

The 1.4R foldable OLED reliably passed 200,000 folding tests, a measure of foldable panel durability, conducted by the global certification body Bureau Veritas. Additionally, it reduced the proportion of harmful blue light to an industry-low level of 6.5%, making it easier on the eyes even after prolonged viewing.

A Samsung Display official said, "With the rapid increase in smartphone usage due to 5G commercialization, the world's first 1.4R foldable OLED realizes near-perfect folding while providing the excellent image quality unique to OLED," adding, "It will present new value for foldable smartphones to consumers."

This content was produced with the assistance of AI translation services.