Apple is preparing for a major leap in display technology with plans to introduce a four-edge bending OLED screen on the 2028 iPhone. Unlike current models, this design will curve on all four sides to eliminate bezels, relying on a transparent indium-zinc-oxide (IZO) cathode layer instead of the traditional magnesium-silver alloy. Engineers say this change is critical to prevent image distortion and brightness loss at the curved edges, making the display both functional and visually seamless.

The shift is already driving major investments from Apple’s Korean suppliers. LG Display has approved a ₩1.106 trillion ($740 million) commitment to upgrade its OLED production infrastructure by mid-2028, with Apple’s IZO program identified as the primary driver. The new manufacturing process requires low-damage transparent conductive oxide (TCO) sputtering equipment, a significant departure from existing tools used in current OLED lines.

Samsung Display, Apple’s other OLED partner, is evaluating whether to build a new production line rather than retrofit existing ones, due to spatial and technical constraints. Meanwhile, Apple plans a two-phase rollout: a 2027 model with micro-curved edges using current materials, followed by the full IZO-powered version in 2028. The broader industry is watching closely, as Apple’s move could accelerate the adoption of all-edge displays across the Android market, reshaping display innovation globally.