Under the full screen trend, letting you know the fingerprint under the screen is the end of the screen development!

The screen is the most indispensable part of the smart phone. When entering the era of smart phones, the screen replaces the keyboard and becomes the biggest window for people to interact with the mobile phone. Therefore, the screen of the mobile phone grows larger and smaller, and the form is constantly evolving. From the original 16:9 ratio to a higher screen with a higher screen ratio, many insiders believe that a full screen will be the final form of the phone.

With the continuous development of the comprehensive screen technology, the original positive fingerprint recognition technology has to be moved to other locations in order to make way for the screen, which also affects the user experience when using the fingerprint function. Is full screen and front fingerprint recognition really a problem?

At present, there are four types of fingerprint recognition on the market: frontal fingerprint recognition, back fingerprint recognition, side fingerprint recognition, and screen fingerprint recognition. In terms of experience, the back and side fingerprints must be picked up and then operated, and the experience is lacking. The front fingerprint recognition needs to be opened on the front of the screen, and the pursuit of higher screen ratio is nowadays. The mainstream does not match. In contrast, screen fingerprinting has naturally become the best choice for the full screen era.

Up to now, the real implementation of the optical solution without aperture is the screen fingerprint solution. At present, the provider of this solution is only a new one. At the end of last year, the "Clear ID FS9500" screen fingerprint identification solution can be directly packaged. In the AMOLED display module, the same optical material and process as the standard OLED are used, and the final thickness can be within 1.5 mm.

At present, only one of the mobile phone manufacturers uses the solution. The X20Plus/X21 screen fingerprint version is the first to use this advanced photoelectric fingerprinting solution. The principle is that the light from the OLED screen is transmitted when the finger touches the screen. The cover illuminates the fingerprint texture, and the fingerprint reflects light through the screen to the sensor, eventually forming a fingerprint image for identification. Regardless of product stacking, structural design, chip sensitivity, screen thickness, etc., the optical fingerprinting scheme used by vivo is the most mature.

In the actual experience, the vivo X21UD equipped with the photoelectric fingerprint recognition module, as long as the fingerprint finger has been placed on the screen fingerprint image, it will use the photoelectric reflection principle to recognize the pressed fingerprint pattern, and instantly complete the operation of unlocking, paying, etc.; When the fingerprint function is not needed, the fingerprint image will be invisible and will not affect the visual effect.

Of course, the screen fingerprinting scheme still needs to overcome the technical difficulties of R&D and mass production. We are looking forward to the subsequent half-screen or even full-screen fingerprint identification scheme, so that users can enjoy the strongest visual impact and enjoy better fingerprints. Function, bringing the benefits of technological advancement to the hands of more people.

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