The four iPhone 12s released yesterday morning all use the XDR super retina display. The standard iPhone 12 with a flexible screen panel has a much narrower frame than the iPhone 11, achieving the same screen ratio as the Pro. But at the same time, the screens of all iPhone 12 series do not support the high refresh rate of 120Hz, which also disappoints many consumers. It can be said that it is a successful screen and a failed screen.
But shortly after the iPhone 12 was released, new news came in the industry chain. Taiwanese media DigiTimes said that Apple's new iPhone in 2021 will continue to have this year's screen size, while Apple will use LTPO backplane technology and apply it to the new phone to be launched in the second half of 2021. The LTPO backplane cooperates with the currently mass-produced OLED dynamic adaptive refresh rate technology, which will greatly reduce the power consumption of the high refresh rate OLED screen, so the 120Hz screen is expected to appear on the iPhone 13.
It is reported that LTPS (low-temperature polysilicon) is currently the most mature backplane technology applied to OLED, but it has not optimized the high-performance state of OLED panels, that is, the high refresh rate screens we have often mentioned on mobile phones and notebooks will be Under LTPS, it brings higher power consumption. This means that if Apple wants to use more energy-efficient OLED screens with a higher refresh rate on the iPhone, iPad and even MacBook, it must find a suitable replacement.
LTPO (Low Temperature Polycrystalline Oxide) is a new type of backplane technology that combines the advantages of LTPS and oxide IGZO technologies to achieve higher charge mobility, stability and scalability at low production costs. Apple began to use LTPO backplane technology on the 4th generation of Apple Watch, so that the screen has a battery life of up to 18 hours under normal display. But it may take time to bring this technology to larger screens such as iPhone, iPad, and even MacBook.