In-display fingerprint readers have been around for a while now, but it only could be fitted under OLED display panels until now. The OLED panels are costly to produce which raises the overall cost of the phone. It also has kept the midrange phone users aloof from the in-display fingerprint sensor technology for a long time now. Earlier smartphones with LCD panels had to rely on physical scanners, either back or side-mounted.
However, Redmi which is a midrange focused budget-friendly brand has developed a new technology allowing manufacturers to implement in-display fingerprint sensors while still using the traditional cheaper LCD panels.
Redmi General Manager Lu Weibing announced on China’s social media website Weibo, sharing a demo video showcasing the new technology on a Redmi Note 8 Pro prototype; that uses an LCD panel.
According to the Weibo post, the company achieved this by using infrared through high transmittance film materials. This greatly improved the permeation of light and allowed it to pass through the screen, allowing the fingerprint sensor to read a fingerprint.
Previously, BOE and AUO Optronics had also announced that it had achieved the same, but Redmi is ready with the mass production solution. In the future, we may see midrange Note series and the Redmi series coming up with this technology soon.
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