When a company advertises a smartphone with a biometric reader under the display, we can immediately confirm that it used an OLED screen. However, seeking to change this scenario, Redmi announced the first sensor that can be used on LCD screens.
Through a post on Weibo, a kind of Twitter in China, Lu Weibing, CEO of Redmi, made it very clear that the company started mass production of this technology. This means that soon we will be able to see the first smartphones of the brand with this new biometric reader.
The executive also shared a small video showing the feature in operation, which is very fast and, apparently, accurate, proving that it is not far behind the sensor implemented in OLED screens.
The reason for this technology is that it only works on very simple OLED displays: the panel made of organic diodes is considerably thin, since it does not need a dedicated structure to light the pixels, allowing the passage of information, such as the "drawing" of the user's digital, for a sensor placed underneath, being it CMOS or ultrasonic, as in the Galaxy S10 and S20 line, for example.
According to Redmi, this new technology delivers a high transmission infrared film that helps in the passage of infrared light, making the biometric sensor able to read, verify and release access to the system.
Unfortunately, there is still no information about the launch date of the feature, nor do we know which smartphone it will be available on. However, these details may be revealed soon.