In the iPhone 14 series, in addition to the “Dynamic Island”, there are also many differences in the screen, such as the variable refresh rate ProMotion.
In addition, there is another difference between them, which is related to the material used for the display. According to the official description, the iPhone 14 and Plus models are made with Samsung’s 11th-generation material, while the two Pro models use 12th-generation material — called M11 and M12, respectively.
South Korean media outlet The Elec reports that all four iPhone 15 models will use the latest M12 material for their OLED screens this year and that Samsung will also use the same technology in its latest Galaxy Fold / Flip 5, but still only the two Pro series models will have LTPO (low-temperature polycrystalline oxide).
Apple may allegedly skip M13 next year in favor of the more advanced M14 material. The report notes that this is a set of materials developed specifically for Apple and is expected to be used in the iPhone 16 series to be released next year. Of course, Samsung shows that other customers, such as Samsung Electronics, are still using M13 material.
OLED is an organic electroluminescent device, composed of a relatively special organic material, according to its structure can be divided into four types, namely single-layer devices, double-layer devices, three-layer devices and multi-layer devices.
The M11 and M12 mentioned here refer to the composition of the materials used to manufacture OLEDs. According to public information, the OLED material group consists of light-emitting and common layers, such as dopant (emitter), body (light-emitting layer), red (R), green (G) and blue (B).
Apple had used its own LT materials for the iPhone X, the first OLED iPhone in 2017 and the iPhone XS in 2018, but is using the same M-series materials as Samsung Electronics Galaxy starting in 2019.