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Apple\u2019s answer to the visible crease in today\u2019s foldable phones may lie in optically clear adhesive (OCA) technology<\/b>.<\/p>\n
According to market research firm TrendForce, OCA could be the breakthrough technology for foldable displays this year. Traditionally used as a bonding layer, advances in OCA now allow it to play a more active structural role. Through optimised material composition and modulus design, OCA can deliver enhanced viscoelastic properties<\/b> to help the display better withstand repeated folding.<\/p>\n
In practical terms, what this means is the foldable panel can remain flexible during gradual bends to reduce fatigue stress, while still providing localised support when exposed to sudden pressure. OCA\u2019s micro-flow behaviour also allows it to fill microscopic irregularities<\/b> that develop over time, reduce light scattering, and further minimise the appearance of a crease.<\/p>\n
That said, materials alone aren\u2019t enough. TrendForce notes that mechanical elements, particularly hinge design, remain just as critical in reducing crease visibility. This aligns with Apple\u2019s reported approach for its rumoured foldable iPhone, where a \u201cnearly invisible crease\u201d and a \u201cmuch higher-quality hinge\u201d are two key features<\/b> to help it stand out from the competition. <\/p>\n
Apple is also said to be exploring ultra-thin flexible glass<\/b> to distribute bending stress more evenly across the display. On the hinge front, analyst Ming-Chi Kuo suggests the company could adopt liquid metal components to improve durability, enhance screen flatness, and further suppress crease formation.<\/p>\n
Meanwhile, Android phone makers are making similar strides. Samsung recently showcased a creaseless foldable OLED prototype at CES 2026, which reportedly used a laser-drilled metal display plate to disperse stress during folding better. OPPO has taken a different route, leveraging 3D liquid printing technology in its Titanium Flexion Hinge on the Find N6 foldable phone to smooth out surface irregularities and deliver a near crease-free experience.<\/p>\n
As it stands, 2026 could mark a turning point for foldable displays, as advances in materials like OCA and more sophisticated hinge designs push the long-standing crease issue closer to being resolved.<\/p>\n
Source: TrendForce<\/p>\n<\/div>\n