Xiaomi may be preparing to completely innovate under-display fingerprint readers.
According to a patent now disclosed, the Chinese brand could be working on a new technology for reading fingerprints on the screen that will be very useful and practical for all users.
Xiaomi develops a new technology that could revolutionize the fingerprint reader
Recently, a Xiaomi record was detected in the Chinese patent database that specifically refers to fingerprint readers integrated into the screens of smartphones, something very common in Android models.
According to the documentation found, Xiaomi could be working on a new on-screen fingerprint reading technology that will greatly facilitate the use of this function.
It is not easy to innovate in fingerprint readers, but Xiaomi is on the way to achieve it, according to the information contained in this patent. All because the Chinese brand seems to be developing a new technology that will allow the user to use the fingerprint sensor anywhere on the screen.
This is great news for all users, since we will no longer need to place our finger, in a very specific and precise way, so that the reader below the screen can read and recognize our fingerprint. In addition, it will allow you to unlock the screen in any area, including the upper one.
How Xiaomi’s new technology allows you to unlock your smartphone anywhere on the screen

In the patent documentation, Xiaomi explains the basis of the new technology. Thus, the screen will have a set of infrared LED transmitters and receivers, embedded both in the touch layer of the screen and in the AMOLED panel. All of these transmitters and receivers are essential components of the fingerprint reader.
In the patent documentation it is also possible to understand how the new technology works. When the user touches the screen, the capacitive touch layer records the touch, position and shape of the fingertip. Then the series of infrared LED transmitters emit light on the screen in the shape and position of the fingertip, that is, the areas that do not have contact with the finger will be left without light.
The next step is for the infrared light to be reflected, upon contact with the finger, to reach the infrared light receptors. This data is used to map the contour of the fingerprint and compare it with the one defined by the user as the correct one. If there is a positive match, the screen is unlocked, from any area.
Now we just have to wait for Xiaomi to include the new technology in its smartphones, which is expected to be in a short period of time.

