In the era of full-screen smartphones, it is not only the screen ratio that has changed, but the significant historical significance of its existence is to promote technological change, and we finally ushered in the screen identification of the display area. On January 24, 2018, vivo released the vivo X20Plus screen fingerprint version in Beijing, canceling the back fingerprint to use the screen fingerprint recognition, other configuration changes are not big, 4GB RAM + 128GB ROM, color black gold, priced at 3598 yuan.
We got this machine in the first time. I believe that everyone has long been looking forward to fingerprint recognition on the screen. Don't talk nonsense, so that it's not good to let the test know, let us tell you everything you want to know about the vivo screen fingerprint.
The most intuitive benefit of the fingerprint form under the screen is that it enhances the sense of unity.
What can the fingerprints on the screen bring to us compared to ordinary fingerprint recognition? Do not say anything else, the most intuitive feeling is that the integration of the appearance of the phone has been strengthened. The vivo X20Plus screen fingerprint version cancels the back fingerprint opening, making the back body look clean and simple. At the same time, it does not need the front panel to open the hole, which guarantees the aesthetics of the front panel.
In addition to the back fingerprint opening screen fingerprint does not make a significant change in appearance
From the appearance, in addition to color matching, the two phones really did not change much. Interestingly, due to the cancellation of the back fingerprint recognition module, the overall thickness of the fuselage is reduced by 0.1mm (X20Plus screen fingerprint version body size 165.2mm & TImes; 80.02mm & TImes; 7.35mm, regular version 165.32mm * 80.09mm * 7.45mm ).
In fact, the screen appearance of the screen fingerprint version is not completely different. In the state of the screen, a certain angle of strong light illumination, we can see a sensor for fingerprint recognition tilt placement. Light is generally not found in general.
The trigger mechanism for fingerprint recognition needs to be lit first.
Similar to the triggering mechanism of the first generation fingerprint and facial recognition, the recognition module is not in the power-on state at all times, and needs to be triggered first. The screen fingerprint of vivo is based on the photoelectric reflection technology. Popularly speaking, it is the optical fingerprint recognition method. Therefore, the fingerprint recognition is required to first emit light to trigger the recognition.
Vivo provides two ways to trigger the optical fingerprint: one is to illuminate the identification mark, press the mark to identify, which is equivalent to the face recognition brightening screen, but the vivo fingerprint trigger is more sensitive; the second is to double-click the bright screen And then perform fingerprint recognition.
The recognition rate is good, the recognition speed is slightly slower than the traditional capacitive fingerprint.
From our test point of view, the recognition rate of the screen fingerprint is still quite good, even if you press and hold more than half, you can unlock it. As long as you don't deviate too much from the recognition position, your fingers should not be removed too quickly, and the success rate of unlocking will be very high.
From the perspective of recognition speed, the screen fingerprint is still slightly inferior to the mature capacitive fingerprint recognition. In the state of the interest screen, press and hold the fingerprint identification, the position of the hold will be highlighted, and then there will be a transition animation of the circuit to swim, after the animation is over, you can unlock.
In actual use, we compare the speed of the vivo screen fingerprint with the face recognition of the iPhone X. Since the iPhone X lifts the wrist screen and unlocks it, it also needs to be manually swiped. In contrast, the vivo screen fingerprint can be unlocked more efficiently by pressing the phone button.
There are still some restrictions on wet hand and film screen fingerprints.
The maturity of the fingerprint fingerprint recognition is that wet hand recognition cannot be achieved. For users who love sweating, the function of fingerprint recognition in summer is basically awkward. So can the screen fingerprint of vivo be unlocked with wet hands? The test found that too much water on the finger can't be unlocked, but it simulates the natural sweating wet state and there is no problem with fingerprint unlocking.
So does the film affect the screen fingerprint? We found a common plastic film to test and found that although the film can be unlocked, the recognition rate has decreased. Therefore, users who want to apply film can only wait for the official custom film of the first screen of the vivo screen.
There is no difference between the screen recognition function and ordinary fingerprint recognition.
Screen fingerprint recognition functionality, support WeChat, Alipay payment, support fingerprint verification of handheld banking, support application lock decryption, etc., no difference from conventional fingerprint recognition. When fingerprint recognition is required, the fingerprint logo will automatically light up.
How is the screen fingerprint of the recognition principle vivo realized?
The vivo screen fingerprint uses the photoelectric reflection technology supported by SynapTIcs. Unlike the previous capacitive and ultrasonic solutions used on cell phones, this is a technique for acquiring fingerprint images by light reflection. Specifically - "The RGB Pixel that specifically adapts to the OLED screen emits light, penetrates the glass cover of 0.68 mm thickness and reaches the finger. The reflected light is different because of the different lines of the finger. These reflected light penetrates the screen and reaches the fingerprint Sensor. To achieve fingerprint recognition." (quoted from vivo official micro)
The recognition process can be unlocked even if the light-emitting position is not fully pressed
In the recognition process, a certain intensity of light is required to achieve recognition, so when the identification mark is pressed, there is a partial highlight to provide sufficient reflected light.
In addition, when the fingerprint is entered, the system will remind you to press the recognition effect slightly better. The reason is not because the pressure sensor is integrated under the screen, but the fingerprint will be flattened on the screen when pressed hard, and the fingerprint recognition sensor can obtain a clearer fingerprint reflection image.
Just now we also mentioned the identification sensor placed obliquely under the screen. This is because when the sensor is placed horizontally, the dot arrangement of the OLED screen will block the light of a part of the sensor, and after 45 degrees of rotation, it can be exposed more and more easily recognized.
The famous "Apple analyst" Guo Mingchi once said that the optical fingerprinting technology is not well penetrated, and it is easy to be affected by the light source and screen color, and the problem of recognition error occurs. And vivo solves these problems with high-quality luminescent materials and excellent bonding technology.
Regarding the official film of the film vivo, it will not affect the recognition rate.
We have also tested it earlier. Although ordinary plastic film can realize fingerprint recognition, the recognition rate will decrease. So how does the official official film of vivo guarantee the recognition rate of screen fingerprints?
It is reported that the quality of the film needs to be stretched, but there will be streaks in the stretching process, these stripes will change the light, seriously affecting optical fingerprint recognition. The ordinary plastic film used in our experiments should be an unstretched film, which can realize recognition, but the recognition rate is not high due to factors such as bonding bubbles. Of course, too thick a film will also affect the recognition.
The custom film of vivo is a film with no directional stripes, moderate thickness and excellent protection. So in theory, the cost of vivo custom film will be higher.
I believe that everyone has a more comprehensive understanding of the screen fingerprint of vivo. How is the vivo X20Plus screen fingerprint version your food?
2222Bossgoo(China)Tecgnology.
(Bossgoo(China)Tecgnology) , https://www.cn-gangdao.com