So far, it only worked under an AMOLED panel, so there was no chance that the cheaper Xiaomi and Redmi phones could use it as well.
Redmin seems to have solved the problem. Redmi CEO Lu Weibing recently officially announced that fingerprint readers under LCD displays have now become a reality thanks to Redmi’s development.
How do fingerprint readers on the LCD screen work?
The CEO posted a very short video of a phone using an under-fingerprint reader (it could have been a prototype). He also explained the reasons why the technology could not be mass-produced so far, and how the Redmi R&D team had crushed them. According to the explanation, Redmi made a high-transmittance film that allows infrared light to pass through the display above the sensor (which was not possible before). This allows the fingerprint to be recognized and the display to be unlocked.
Redmi General Manager has just announced that in-display fingerprint readers for LCD panels are now ready for mass production. #redmi #xiaomi #RedmiNote #RedmiNote9 pic.twitter.com/FaKD4iD5jw
- Abdul Q. (@AndroidSaint) March 9, 2020
No more detailed details of the technology have been covered, so we do not currently know the cost of the new technology. Its effectiveness is also unknown, but experts say it is likely to run slower than the solution currently in use under AMOLED panels.
The introduction of the technology will be possible by the end of this year, so it is expected to appear even at the entry level, on the Redmi 9A and Redmi 9 phones. Probably, only then can we get an idea of the speed and efficiency of the new solution.
Do you think it makes sense to force the fingerprint sensor under the glass on cheaper phones?
Source: Gizchina
