Get ready for under-display smartphone cameras



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As on-screen fingerprint readers quickly become a common feature of flagship phones, manufacturers are beginning to wonder about the other things they can stick under the screen. In the past day, both Oppo and Xiaomi have used social media to show the latest development: front cameras sub-screens. Forget the notches of the camera, the perforation displays and the complicated mechanisms of pop-up; the sub-display camera makes it possible to design all-screen smartphones without moving parts.

The cameras under display work much like optical fingerprint scanners: a CMOS chip is placed under a transparent section of the display and it scans the pixels to see the outside world. For an optical fingerprint reader, the configuration of the image capture should only be of sufficient quality to identify the peaks and troughs of the finger. For selfies and video chats, the quality of the picture will be much more demanding. We wonder what would interfere with the display of the camera with pixels would affect the quality of the image. Xiaomi and Oppo shared videos showing that the built-in cameras were working properly, but the quality of the videos is too low to determine the quality of the image.

Technically, we have already seen a "sub-screen camera" of the Samsung Galaxy S10, but Samsung has laser cut any pixel annoying the camera, thus creating a permanent black spot on the screen. These new prototypes go even further, Xiaomi promising that the front camera will "disappear" and be "totally transparent".

When you do not take a picture, the screen pixels function normally and when it is at the time of shooting, the pixels around the camera will turn off, allowing so to the camera to see through the screen. Xiaomi detailed part of his implementation, saying that he used a "low reflection special glass" for better image quality.

For privacy conscious users, this technology will also allow people to hide their cameras behind virtually any screen, perhaps in a way almost impossible to notice. What that is funny!

There is no word on the specific models that will come with this camera style first, but like the OnePlus 7 Pro, it should mean more beautiful devices on all screens. Obviously, both companies are exhibiting under-display cameras at the same time because a component supplier has started selling a sub-display camera solution. Chinese manufacturers excel in the rapid marketing of components. I would not be surprised to see them appear everywhere in a few months.

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