Advances in optically clear adhesive (OCA) will be a key factor in achieving a near-invisible crease in Apple's first foldable iPhone expected later this year, according to TrendForce.


The supply chain intelligence firm outlined the key technologies in a new report on foldable display innovation, explaining that creases form when layers within the display panel fall out of alignment, concentrating stress at the fold and causing micro-cracks or permanent deformation over time.

Ultra-thin glass (UTG) also plays a role in the optimal design. Apple's patents have described a design where the glass is thinner at the fold for flexibility and thicker elsewhere for durability, which is an approach consistent with reports last year that Apple was testing uneven-thickness panels, and more recently that it may use a dual-layer glass structure to spread stress across multiple layers.

The single most important factor, TrendForce says, is OCA. Modern formulations go well beyond simple bonding, staying pliable during gradual bending to reduce fatigue while temporarily stiffening under sudden impact to provide structural support. Over time, the adhesive's ability to flow into microscopic irregularities also reduces light scattering and keeps the crease less visible.

Hinge and structural engineering still matter too. Samsung Display uses laser drilling in the metal support plate behind the display to balance rigidity and flexibility, a technique analyst Ming-Chi Kuo reported last July that Apple's foldable would also use via supplier Fine M-Tec. Samsung briefly showcased a crease-free panel at CES 2026, though it later clarified this was an R&D concept rather than a production-ready design.

Apple has reportedly pursued eliminating the crease "regardless of cost", and leaker "Fixed Focus Digital" reported in February that production orders had been placed with a crease depth under 0.15mm and a crease angle under 2.5 degrees. TrendForce estimates Apple could capture close to 20% of the foldable smartphone market this year, which it says would compress Samsung and Huawei to roughly 30% each.

The foldable iPhone is expected to be unveiled alongside the iPhone 18 Pro models in September. Foxconn began trial production last week, and Samsung Display is reportedly on track to begin mass production of OLED panels for the device in May.
This article, "Smart Adhesive Is Key to Crease-Free Foldable iPhone Display" first appeared on MacRumors.com

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John Giannandrea, Apple's former head of artificial intelligence, is set to leave the company this week as his final stock vesting date approaches.


In his "Power On" newsletter, Mark Gurman noted that Giannandrea's exit has been a prolonged one. Apple moved to dramatically reduce his role in March 2025 following the disappointing launch of Apple Intelligence and ongoing delays to the Siri overhaul, stripping him of oversight of ‌Siri‌, robotics, and other AI teams at that time. The company made the departure official at the end of last year, announcing that Giannandrea would be retiring in 2026.

In the intervening months, Giannandrea has been in an advisory role, what Gurman described as "resting and vesting," meaning remaining on the payroll until stock grants vest. With Apple's next vesting date falling on April 15, Gurman says Giannandrea's final days at the company are this week. His remaining responsibilities, which covered Apple's foundation models, AI testing, and various other functions, were divided between software chief Craig Federighi, services head Eddy Cue, and operating chief Sabih Khan.

Giannandrea joined Apple from Google in 2018. Gurman says he is unlikely to join another major technology company and is instead expected to take seats on corporate boards and pursue startup advisory work.

Gurman offered a broader assessment of why Giannandrea's tenure failed to produce results, pushing back on the notion that Cook simply struggles with outside hires: "The truth is that the top of Apple is run like a small family business with few decision-makers. And if you're not in the inner circle — which is nearly impossible to crack — you're simply not empowered enough to drive real change at the company."
This article, "Apple's AI Chief John Giannandrea Departs This Week" first appeared on MacRumors.com

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