Apple’s upcoming foldable iPhone, set to debut this year, features a surprising engineering element: glue. Advances in optically clear adhesive (OCA) are crucial for minimizing visible creases in the foldable display. These creases typically occur when display layers misalign, causing stress and potential damage. Ultra-thin glass also contributes to the design, with Apple exploring uneven thickness to balance flexibility and durability. The adhesive’s unique properties allow it to remain flexible during bending and provide support during impacts, while also reducing light scattering. Additionally, hinge and structural engineering play a role, with Apple adopting techniques like laser drilling for better balance. Determined to eliminate creases, Apple aims for a maximum crease depth of 0.15mm and angle of 2.5 degrees. The foldable iPhone is expected to be unveiled with the iPhone 18 Pro models in September, with Foxconn starting trial production and Samsung Display preparing for OLED panel mass production. Apple is poised to capture a significant share of the foldable smartphone market, challenging competitors like Samsung and Huawei.
Is Glue Apple’s Secret Weapon for Its Next Big Product?
