Apple’s 2029 “Pro” iPhones could adopt thinner and more power-efficient OLED screens, according to UBI Research. The iPhone Duo display technology behind this shift is known as Color Filter on Encapsulation (CoE), and it may eventually transform the entire Pro lineup.
CoE removes the conventional polarizer from the OLED panel and places a color filter directly on top of its encapsulation layer. A polarizer helps suppress reflections from ambient light, but it also absorbs a significant portion of the light produced by the display.
Why Removing the Polarizer Matters
Removing the polarizer allows more light to pass through. That could enable a display to reach greater brightness without consuming additional power, or use less power while maintaining the same brightness.
Eliminating the separate layer can also make the display assembly thinner. That frees up internal space for components such as the battery, cameras, and more.
Samsung first commercialized the technology, which it branded Eco² OLED, with the Galaxy Z Fold3. According to Samsung’s internal testing, its original implementation improved light transmission by 33% and reduced power consumption by up to 25% compared with an OLED panel using a traditional polarizer.
The Technical Challenges Behind CoE
CoE technology presents some technical challenges. Without a polarizer, manufacturers have to control external reflections through a combination of color filters, black pixel-defining layers, low-reflection coatings, and other optical measures.
UBI Research believes the difficulty of maintaining outdoor visibility, viewing angles, contrast, and color accuracy may explain why Apple is reportedly waiting until 2029 to bring the technology to its high-volume conventional iPhone models.
iPhone Duo Display as the First Step
Prior to the unveiling of the iPhone Duo, reports indicated that its Samsung-supplied folding OLED display would use CoE technology. Apple has not detailed the panel’s internal construction.
UBI Research sees the foldable device as a potential first step toward using polarizer-free OLED displays across the iPhone “Pro” lineup. The iPhone Duo display could therefore serve as the proving ground for technology that eventually reaches millions of Pro users.
The research firm estimates that annual panel demand for the two Pro models could remain between 90 million and 100 million units. That would make the proposed transition significantly larger in scale than CoE’s use in foldable devices.
Suppliers Expected to Lead Production
Samsung Display and LG Display are expected to lead the initial supply. BOE could compete for orders if it can meet Apple’s requirements.
For now, the iPhone Duo display remains the most immediate example of CoE technology in Apple’s product roadmap. The Pro models could follow several years later if the technology proves viable at high volume.
| Detail | Information |
|---|---|
| Technology | Color Filter on Encapsulation (CoE) |
| First Samsung device | Galaxy Z Fold3 (Eco² OLED) |
| Light transmission gain | 33% |
| Power consumption reduction | Up to 25% |
| Expected Pro iPhone adoption | 2029 |
| Estimated annual Pro panel demand | 90–100 million units |
| Expected initial suppliers | Samsung Display, LG Display |
What This Means for Future iPhones
If Apple moves forward with CoE across the Pro lineup, future models could combine higher brightness with lower power draw in a thinner chassis. That combination matters as Apple continues to balance display quality against battery life and internal space.
A thinner display assembly would give Apple more room for other components. Larger batteries, improved camera systems, and additional sensors all compete for space inside a modern iPhone. CoE could help Apple address those competing demands without sacrificing screen quality.
The technology also aligns with a broader industry push toward more efficient OLED panels. As displays grow brighter and more advanced, managing power consumption becomes increasingly important. CoE offers a way to improve efficiency without compromising on brightness or color performance.
Why the 2029 Timeline Makes Sense
Waiting until 2029 gives Apple time to solve the technical challenges associated with polarizer-free OLED panels. Maintaining outdoor visibility, viewing angles, contrast, and color accuracy without a polarizer requires careful engineering.
Apple has not confirmed any of these plans publicly. UBI Research’s projection points to 2029 as the earliest likely window for CoE in high-volume Pro models. The iPhone Duo display serves as the technology’s introduction to Apple’s lineup, with broader adoption potentially following if the approach proves successful.
For consumers, the practical benefits could include brighter screens, longer battery life, and thinner devices. Those improvements would apply across the Pro lineup if Apple ultimately adopts CoE technology at scale.
