At present, the mainstream screen fingerprinting technology utilizes an optical sensor that only works with OLED panels. The principle is to combine the visible light camera with the display panel through a specific process, and use the light transmittance of the OLED panel to “photograph” the fingerprint.
Due to the existence of backlight on LCD panels, these are naturally incapable of transmitting light. Therefore, mobile phones that currently use screen fingerprint recognition use OLED panels.
That ends today as a company called Fortsense just announced that it has successfully developed an on-screen fingerprint solution for LCD panels. It is reported that the R&D team has successfully revised and improved the fingerprint optical path scheme through continuous modification and improvement of the LCD backlight panel. Successfully solving any imaging artifacts and other issues that didn’t let the sensor have a clear image.
Fortsense achieved this result by using an algorithm-assisted approach. By adopting the latest deep learning neural network algorithms is indeed now able to quickly recognize the fingerprint under the LCD. The fingerprint recognition rate is also comparable to the traditional capacitive fingerprint.
Compared with the OLED screen fingerprint scanners, the advantage of LCD screen fingerprint is that the costs will be lower. At present, LCD panels are far superior to OLED panels in terms of production capacity and sales volume. Therefore, in the future, low-end and mid-range mobile phones may use this solution to bring this technology to the masses.
However, this solution will take time to apply to smart terminals. Wang Teng, product director of Xiaomi, said that it is unlikely that there will be products on the market this year.
LCD 고유의 백라이트에서 나오는 잡음이 OLED 나오는 잡음보다 매우 커서 화면지문인식에 어려운 것으로 알려졌었는데 중국 작은회사가 개발에 성공했나보네요.
阜时科技=FORTSENSE, 2017년 11월 창업.
JDI는 자체적인 LCD 화면지문인식 솔루션 개발, 발표했으나 완성도가 떨어진 상태라 애플 LCD폰(2019년 이후 OLED비중이 매우 높아지거나 100% OLED적용?) 적용을 준비중이라는 소문이 있으나 가능성, 희박으로 판단.
대만 AUO-EgsiTec도 삼성폰 적용 시험중으로 전해드렸는데 LCD폰도 지원가능한 솔루션으로 알려졌음.
-Driven by the fingerprints under the screen, it is estimated that the global fingerprint chip shipments will reach 990 million in 2019.
-due to the decline in overall terminal demand and 3D face recognition competition, shipments of fingerprint chips in 2018 were approximately 879 million, year-on-year. Decreased by 18.8%.
-the global ultrasonic fingerprint chip shipments will be about 50 million in 2019.
-the global optical fingerprint chips will be further increased to 280 million in 2019, an increase of about 37%.