Apple is investigating a newer display tech for its Mac lineup that could replace LTPO thin-film transistor (TFT) backplanes used in current OLED panels. Sources suggest Apple is experimenting with high-mobility oxide (HMO) TFTs to improve performance and cut costs on future MacBook and iMac displays. The information seems confirmed by recent display analyst findings and manufacturing reports out of Samsung Display and LG Display.
How HMO Stacks Up Against LTPO
The big difference lies in electron mobility. Conventional oxide TFTs achieve around 10 cm²/V·s, while LTPO combines oxide with LTPS (low-temperature polycrystalline silicon) to improve efficiency and power savings. HMO aims to drive mobility into the 30–50 cm²/V·s range — offering higher speeds and better power efficiency without the complexity LTPO carries.
Two manufacturing approaches are under evaluation. One relies on sputtering, which is faster and more compatible with current production lines. The other uses atomic layer deposition (ALD), a slower but more precise process. Both LG and Samsung are reportedly testing both methods, though sputtering is being prioritized.
Where HMO Might First Appear
Apple already uses standard oxide-based TFT backplanes in its new touchscreen MacBook Pro OLED, and appears to be considering HMO for that line or related Pro/Ultrafied variants. It’s also testing OLED display upgrades in future MacBook Air and iMac models, though those are still a few years out. Late 2026 or early 2027 is the expected window for Pro models with more advanced OLED tech.
In contrast, the MacBook Air and iMac are projected to receive OLED panel upgrades in 2028 or 2029. The rollout lag follows Apple’s usual strategy: improving its higher-end, higher-margin models first, before bringing new display tech into its more affordable lineups.
Uniformly across all recent reports, what stands out is Apple’s effort to reduce complexity and manufacturing cost without sacrificing performance — using technologies like HMO to streamline production while improving display quality. LTPO remains current tech, but HMO represents what could be next.
What this means:Higher mobility in TFTs allows for sharper OLED screens, quicker refresh rates, and less power draw. For users, that could translate into MacBooks and iMacs that are brighter, more fluid during motion (like scrolling or video), and with longer battery life. It also makes large, high-resolution OLED panels more financially feasible to produce at scale.
Why it matters:This shift could help Apple close the gap between current OLED offerings and future displays that need to balance performance, efficiency, and manufacturability. As competitors push similar display innovations, Apple adopting HMO could be critical for staying ahead in laptop screen tech.
What to watch:Be on the lookout for Pro-level Macs in late 2026 or early 2027 that showcase OLED panels with enhanced backplanes. Specs like sustained brightness, refresh rate stability, and efficiency gains may offer signs of HMO’s real-world readiness. Also, tracking supplier moves — especially Samsung Display and LG’s assembly line upgrades — will help predict when Air and iMac models will follow.
