Recently, the industry reported that Huawei’s flagship new Mate 11 will be equipped with Qualcomm’s ultrasonic fingerprinting solution, and that the company’s cooperative development and Ou Feiguang will also enter Huawei’s supply chain, which is expected to drive other Android camp phones. Manufacturers follow up and import to high-end models. It is reported that the fingerprint recognition function under the screen is expected to become the highlight of Huawei Mate 11, and it is expected to start mass shipments at the end of the third quarter or the fourth quarter of this year.
Undoubtedly, the iPhone X, which was the first to adopt 3D-aware face recognition technology, has launched a whirlwind in the industry. However, Android camp smartphone makers still hold a wait-and-see attitude toward face recognition technology. The main reason lies in two aspects: on the one hand, because Apple's 3D-aware lens module costs about 60 US dollars, the cost is high, and the sales of iPhone X are not satisfactory; on the other hand, due to the 3D developed by mainland suppliers. Perceptual technology has the potential risk of infringement of patents. If mainland mobile phone manufacturers are fully introduced into the flagship model, it will bring risks and harm to the mobile phone brand.
As 3D face recognition technology remains to be seen, coupled with the 18:9 full-screen craze, smartphone vendors in the Android camp are increasingly favoring the screen fingerprinting technology.
The core difficulty of fingerprint recognition under the screen is how to hide under the screen and collect and match the fingerprint of the user through the screen. It is difficult to achieve this by the common capacitive fingerprint recognition technology. As far as the current fingerprint recognition technology is concerned, only ultrasonic fingerprint recognition and optical fingerprint recognition are applicable.
Ultrasonic fingerprint recognitionUltrasonic fingerprint identification technology is a very new identification scheme, and the representative manufacturers are Qualcomm and FPC. It is understood that the ultrasonic fingerprinting technology developed by Qualcomm cooperates with the touch manufacturers Ou Feiguang and Yecheng respectively. Although compared with the traditional fingerprint identification module, the ultrasonic fingerprint recognition module has about 3 times the difference, but its module It has a thickness of about 0.44mm and can penetrate a protective glass with a thickness of 800μm and an aluminum plate with a thickness of 650μm, which is far superior to the penetrating power of a capacitive module (about 200~300μm glass).
At the 2017 MWCS exhibition held in Shanghai last year, vivo first demonstrated Qualcomm's second-generation ultrasonic fingerprint recognition solution to the outside world, which caused a lot of attention.
Compared with capacitive and optical fingerprint recognition, the advantage of ultrasonic fingerprint recognition is that it does not need to be opened, and it gives way to the full screen, which improves the waterproof and dustproof performance of the mobile phone; the dry humidity requirement of the finger is reduced, and the wet hand can also be unlocked. Mobile phone.
However, there are limitations. From the live demonstration of vivo, it can be seen that the ultrasonic fingerprint can only be unlocked in a fixed small area, and it can be expanded to the full screen unlocking.
Optical fingerprint recognitionThe principle of optical fingerprint recognition technology is to put a finger on the optical lens, illuminate the finger with the speed of light, and then reflect it to the sensor for collection and recognition. Representative manufacturers include SynapTIcs and Huiding Technology.
Although the use of optical fingerprinting is a relatively mature solution at present, this method is greatly interfered by the oil stain on the surface of the finger, and it is impossible to perform biological living detection. Compared with the commonly used capacitive fingerprint recognition scheme, the theoretical safety will be lower. .
It is worth mentioning that after the launch of the mobile phone with the screen fingerprint unlocking technology in vivo, KGI analyst Guo Minghao pointed out in the latest investment report that Samsung may not use the emerging products in the Galaxy Note 9 generation. Screen fingerprint technology.
Guo Mingxi believes that there are still many technical problems in the fingerprint recognition scheme under the screen, such as the screen protection coating and the impact on the recognition accuracy in different environments, as well as excessive power consumption. But Guo Mingxi is still optimistic about the future of biometrics, such as fingerprint recognition, which he believes is a must for full-screen handheld devices.
Guo Minghao said that Samsung's launch of the on-screen fingerprint identification solution adds some uncertainty to the final commercialization of this technology. In his view, the fingerprint recognition technology under the screen will be able to achieve large-scale commercial use in the first half of 2019.
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