Recently, there have been a lot of news related to the iPhone 14 series on the Internet. One of the interesting news is that the iPhone 14 Pro series will support the screen display function. The screen display function has been implemented on Android for a long time, and even has various tricks, but it has not been supported on the iPhone for a long time. How difficult is it to implement this function?
What’s the use of turning off the screen?
As early as the era of feature phones, many mobile phones will be equipped with breathing lights. The breathing lights will flash to remind you of missed calls, text messages, or low battery. You can get these key information without turning on the screen. It is more convenient to use. It is regarded as the predecessor of the screen display.
The always-on display displays key information in part of the screen, which replaces the reminder function of the breathing light. In the early days of smartphones, on-screen display was uncommon, mainly because most mobile phones at that time used LCD screens, which were not suitable for realizing on-screen display.
Due to the backlight characteristics of LCD screens, even if only a small area of content is displayed, the entire screen still needs to be lit. Usually, we can easily feel the characteristics of this screen when watching movies on an LCD screen. Even in a pure black scene, the screen can only display a gray-gray effect. This is because the screen backlight is always on, and a pure black display cannot be achieved. , which is the main reason why LCD screens are far less contrasty than OLED screens.
Because of this feature, it will consume a lot of power to realize the screen display on the LCD screen, which will obviously affect the battery life, and the practicability is not high.
The OLED and LCD screens display a comparison chart of pure black images ↑ and the OLED screen supports pixel-level light emission, which can individually control whether a certain pixel emits light. For example, when displaying pure black, the OLED screen can turn off the pixels, which not only can display purer black, but also has a more power-saving effect.
The OLED screen can only light up a small part of the screen, and it is always on to display practical information such as time and message reminders. Users can see key information without manual operation, which is more convenient to use. Only a part of the screen is lit, which effectively reduces the impact of the screen display on battery life, taking into account both convenience and battery life.
Now mainstream Android phones have generally supported on-screen display, and will have a variety of built-in on-screen display styles to choose from. In addition to information such as notifications, time, date, power, etc., the screen display can also display interesting animal patterns, artistic patterns, personalized text, etc., and the gameplay is diverse.
Users can also customize the content displayed on the screen, including adjusting the type of notifications to be displayed, built-in style colors, layouts, etc., with a very high degree of personalization. Some Android phones also support the direct use of album pictures as the display pattern on the screen. You can set any pattern you want, and the degree of personalization is very high.
Systems such as ColorOS even add a hand-drawn creation function to the screen display. Users can manually draw a screen pattern with individual characteristics and directly display their own hand-drawn works.
The off-screen display can indeed bring a more convenient information acquisition experience, but despite the blessing of the OLED screen characteristics, the always-on off-screen display will still consume a lot of power, which will affect the battery life of the mobile phone to a certain extent.
Now the screen display of Android phones is usually not always on by default, and it will only be displayed when you gently move the phone or touch the screen to minimize the impact of the screen display on battery life. Of course, you can also turn on the all-day screen display or timing display. Some mobile phones equipped with LTPO screens will also use the feature of the screen to intelligently adjust the refresh rate to reduce the screen refresh rate when the screen is displayed, which helps to save power consumption.
What’s different about the iPhone off screen display?
As we can see from the above, it is not difficult to realize the display of the mobile phone on the screen. As long as it is a mainstream Android mobile phone equipped with an OLED screen, it will basically support the screen display function.
The iPhone X released in 2017 uses an OLED screen, and the iPhone 12 series has fully switched to an OLED screen. The screen already has such conditions. I believe that if the iPhone wants to realize the screen display function, there will be no major technical problems, but so far, the iPhone still does not support the screen display.
Recently, it was mentioned on the Internet that the iPhone 14 Pro series will support the screen display function, equipped with an upgraded version of the LTPO screen, and support a minimum refresh rate of 1Hz. When the screen is displayed, the screen refresh rate can be reduced by 1Hz. Combined with the characteristics of the OLED screen, it can effectively save power, reduce the impact on battery life, and bring a better screen display experience.
At the Apple WWDC22 developer conference just held, Apple released iOS 16 with a redesigned lock screen interface. In addition to the major changes in the interface style, widgets such as weather and battery have been added. Users can customize their own lock screen interface. , the lock screen interface can now also display information such as event notifications, which is more functional.
The off-screen display may directly apply the function of the lock screen interface. In conjunction with the upgraded LTPO screen that the iPhone 14 Pro series may be equipped with, while realizing convenient on-screen display, it also reduces the impact on battery life as much as possible. Users may have new on-screen display experience.
According to foreign media gsmarena, some code framework evidence related to AOD (on-screen display) was found in the iOS 16 developer beta, which further proves that the iPhone 14 Pro series may support the on-screen display function. Maybe soon we will You can experience the screen display function on the iPhone.
The off-screen display can be regarded as an upgraded version of the breathing lamp in the era of functional phones. It can quickly obtain some key information without lighting the screen, improving the convenience of daily use. However, since the always-on display will bring a slightly obvious power consumption, it will also affect the battery life.
On-screen display on Android phones is no longer a new feature, and it is expected that the on-screen display on iPhone can bring some new experiences.
Is the Always On Display feature useful to you? Share your opinion in the comments section.
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