Under-screen optical fingerprint recognition device

Abstract

The invention provides an under-screen optical fingerprint identification device, which includes a display screen with multiple pixels and multiple optical sensing components. Each of the optical sensing components includes an optical sensor and an optical film layer. Through the arrangement of the optical film layer, the reflected light of the fingerprint at a predetermined angle can be restricted from entering the optical sensor, thereby filtering inconspicuous fingerprint signals or background The noise signal can improve the signal-to-noise ratio of fingerprint recognition to a certain extent. At the same time, the structural advantages of the plurality of optical sensing components of the present invention are thin and easy to prepare, so that they can be interspersed between multiple pixels of the display screen, which does not occupy the effective display area of ​​the screen and can provide more accurate fingerprint recognition.

Description

technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to an under-screen optical fingerprint identification device. Background technique [0002] The emergence of smart mobile devices has brought about tremendous changes in people's basic necessities of life. You don't need to bring cash when you go out, you only need to enter the password or fingerprint unlocking on the smart mobile device to pay. In password payment, different card numbers correspond to different passwords, which makes it easy for people to confuse the password or forget the password, or the password is unfortunately written down by someone with intentions, resulting in payment account theft and loss of wealth. Fingerprint unlocking payment can greatly reduce these defects and bring more convenience to people's life, so it is gradually accepted and used by the market. [0003] The traditional capacitive fingerprint recognition technology or ultra...

AI Technical Summary

Problems solved by technology

[0005] However, the current optical fingerprint recognition devices mostly use collimated light or lens imaging for light sensing and identification. These methods also require many auxiliary components, which bring problems in assembly and processing.

Or in order to improve the accuracy of fingerprint recognition, it is necessary to sacrifice the resolution of the screen, which limits the promotion and use of optical fingerprint recognition technology

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