Recently, OPPO disclosed another patent of off-screen fingerprint technology-ultrasonic fingerprint identification, which can effectively improve the accuracy of ultrasonic fingerprint identification through multiple ultrasonic fingerprint identification modules. We should know that ultrasonic fingerprint identification, as the third generation fingerprint identification technology, has the ability to penetrate materials, so compared with the current popular optical fingerprint, the fingerprint identification accuracy is higher, even if the hand is dirty or wet, it can be quickly unlocked, with higher safety factor and more prospects.
Moreover, ultrasonic fingerprint identification can also bring a larger identification area. At present, the recognition area of the mainstream optical fingerprint unlocking scheme is only the size of thumb, and the user must aim his finger at the designated position to unlock it. If the fingerprint identification module of the mobile phone manufacturer is set too low or too high, then every unlocking experience is not very friendly to the user. In theory, ultrasonic fingerprint recognition can realize half-screen recognition or even full-screen recognition, so that when you unlock, you don't have to stick to a certain area, and unlocking will be more convenient and faster.
Interestingly, in order to solve this pain point, OPPO has previously exposed the patent authorization of "module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification". Through this technology, the mobile phone can provide a structure to set the fingerprint identification function on the display screen, thus realizing the full-screen fingerprint identification function. In this way, OPPO's full-screen fingerprint recognition can increase the fingerprint recognition area of today's full-screen mobile phones. When unlocking, the user can unlock the phone anywhere on the screen without aiming at the fingerprint position. Compared with today's fingerprint identification in a single area, the operating experience will indeed be greatly improved. Coupled with the advantages of ultrasonic fingerprint recognition, the fingerprint unlocking experience under the screen will naturally be faster and more accurate.
It is worth mentioning that the technical principle of full-screen fingerprint identification is to use the gap between RGB pixels of organic light-emitting diodes to place photosensitive fingerprint identification units, so as to realize the full-screen fingerprint identification function, which requires high photosensitive capacity and area of fingerprint identification module and is also very difficult in technology. OPPO's innovative technology can be seen. However, judging from the performance of OPPO in technology research and development in recent years, as of June 30th, the number of patent applications worldwide exceeded 65,000, and the number of invention patent applications accounted for 90% of all patent applications. OPPO ranked second in the list of 202 1 China PCT International Patent Applications TOP 100. With such strong innovation strength, it is not surprising that OPPO can take the lead in providing better solutions for off-screen fingerprints.
Generally speaking, under the background of optical screen fingerprint becoming the mainstream, OPPO has been developing a faster and more accurate fingerprint unlocking scheme, which not only obtained a patent for full-screen fingerprint unlocking, but also introduced a more advanced ultrasonic fingerprint identification technology, bringing another unlocking scheme to the industry. I believe that with the popularization of OPPO technology, we may soon see OPPO launch a mobile phone based on this patent. At that time, I believe that the experience of fingerprint identification under the screen will be greatly improved. Let's look forward to it.