Originally, due to the accuracy problem of 3D face recognition infrared scheme and the suspicion of damaging human body of laser scheme, in display fingerprint recognition technology is regarded as an ideal biometric solution for mobile devices such as smart phones. However, recently, due to the identification of security bugs, and face a severe test.

It was once rumored in the market that Samsung’s next year’s new model might abandon the use of fingerprint identification technology under the screen, but it has not been confirmed. As a matter of fact, chip manufacturers or software / firmware manufacturers are actively finding out improvement solutions and solutions, so that fingerprint identification technology under the screen can continue to develop smoothly.

Under screen fingerprint identification supply chain, orders are estimated to be delivered in the first half of next year. As the new models in the first half of 2020 have been designed, the existing orders will still be supplied to new mobile phones, whether it is optical under screen fingerprint identification technology or ultrasonic under screen fingerprint identification technology related suppliers, at least in the first half of 2020.

The market development of on-screen fingerprint identification technology is not smooth

As for whether the new models in the second half of 2020 will continue to use under screen fingerprint identification, we can see whether the supply chain (including chip manufacturers and software / firmware manufacturers) has a perfect solution. A new generation of on-screen fingerprint identification will be launched as soon as the end of this year and the beginning of next year. In addition to optical on-screen fingerprint identification and ultrasonic on-screen fingerprint identification, panel manufacturers continue to develop a new generation of in cell built-in on-screen fingerprint identification technology, or on-screen fingerprint identification technology.

This on-screen fingerprint identification scheme claims to make the product screen lighter, transparent and unlimited in size than the optical on-screen fingerprint identification and ultrasonic on-screen fingerprint identification. At present, the leading solution provider is China’s Luoji oxi, which uses Tianma a-Si TFT process to make TFT optical sensors. In addition, other chip factories and panel factories have also invested in the development of built-in screen fingerprint identification technology.

The industry believes that as soon as the end of 2019 to the beginning of 2020, a large panel factory will take the lead in launching the demonstration prototype, but the specific mass production time is not clear. The key to the security of fingerprint identification under the screen is the software firmware application. So what’s the problem with the security of fingerprint identification under the screen? Is it possible for supply chain manufacturers to properly solve the problem, make the application of fingerprint identification technology under screen in the mobile phone market, and continue to expand the penetration rate?

From the principle of fingerprint identification technology under the screen, in fact, the hardware part is only responsible for grabbing the fingerprint shadow line and storing it in the login fingerprint template in the hardware area, such as arm, Qualcomm and apple in a certain area of ARM core. If it matches, the app will be informed to follow up. If it doesn’t match, the app will not follow up. Therefore, the security bug is not only the front-end hardware fingerprint capture or comparison problem, but also the follow-up problem after the comparison.

In other words, compared with the hardware part, the key to the security of fingerprint identification under the screen is the calculus firmware software and application program. This will be an important task for chip manufacturers and software / firmware manufacturers in the short term, which is closely related to the next development of fingerprint identification technology.

     

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