Apple tipped to bring 120 Hz ProMotion displays to all iPhone 14 models from next year
According to The Elec, it may be possible for Apple to use low-temperature polycrystalline oxide (LTPO) thin-film transistor (TFT) OLED panels across its iPhone range from 2022 onwards. Currently, Apple equips iPhones with low-temperature polycrystalline silicon (LTPS) TFT OLED panels, although it is expected to switch to LTPO panels for this year's Pro models. The change would bring high-refresh-rate displays to the iPhone 13 Pro and iPhone 13 Pro Max, a feature that it markets as 'ProMotion' on its iPad Pro tablets.
Apparently, Apple will source LTPO panels from Samsung Display this year, with LG Display continuing to supply LTPS panels for the iPhone 13 and iPhone 13 mini. However, The Elec alleges that LG Display plans to transition its LTPS panel production lines to LTPO so that it can supply Apple with 120 Hz panels.
The Elec adds that LG Display has already contacted Avaco about supplying the equipment needed to manufacture LTPO panels. Reportedly, LG Display is awaiting Apple's approval for switching its production lines from LTPS to LTPO.
The switch would mean that both of Apple's primary display suppliers could produce LTPO panels, leaving open the possibility that all iPhone 14 will support high-refresh rates. Reportedly, Apple will move away from the notch next year too, albeit only for its Pro models. In March, Ming-Chi Kuo reported that Apple plans to adopt a punch-hole display similar to many modern Android smartphones. Apple is expected to launch the iPhone 13 series in September.