A fingerprint identification module, fingerprint identification device and display device

Abstract

Embodiments of the present invention provide a fingerprint identification module, a fingerprint identification device, and a display device, which relate to the technical field of fingerprint identification. The fingerprint identification function can be implemented in the display area of ​​the display device, which improves user experience, has low cost, and is easy to implement. The fingerprint identification module includes: a transparent substrate, a transmitting part, a receiving part and a moving part; the transmitting part and the receiving part are respectively arranged close to opposite sides of the transparent substrate, and the transmitting part and the receiving part are fixed on the moving part; the transmitting part includes a plurality of Light sources arranged side by side, the light emitted by the light sources is at a first angle θ 1 It is injected into the transparent substrate and propagated in the form of total reflection in the transparent substrate; there is an adjustment structure on the transparent substrate, which is used to make the light that is totally reflected and propagated in the transparent substrate to be emitted and directed to the receiving part; the receiving part uses It is used to receive the light that each light source enters the transparent substrate and exits through the adjustment structure; the moving part is used to move the emitting part and the receiving part at the same time, in the same direction and in the same displacement. for fingerprint identification.

Description

technical field [0001] The present invention relates to the technical field of fingerprint identification, in particular to a fingerprint identification module, a fingerprint identification device and a display device. Background technique [0002] With the continuous improvement of living standards, various terminal devices have become necessities in life, and users have higher and higher requirements for terminal devices. Among them, because fingerprint recognition has an excellent privacy protection function, it is widely installed in various terminal devices to increase user experience and security. [0003] At present, the fingerprint recognition function can generally only be implemented in the non-display area of ​​the display device, and the fingerprint recognition function cannot be implemented in the display area, which leads to a greatly reduced proportion of the fingerprint recognition area in the entire display device, thereby affecting the user experience. [...

AI Technical Summary

Problems solved by technology

[0003] At present, the fingerprint recognition function can generally only be realized in the non-display area of ​​the display device, but the fingerprint recognition function cannot be realized in the display area, which leads to a significant reduction in the proportion of the fingerprint recognition area in the entire display device, thus affecting the user experience.

[0004] On this basis, if the capacitive fingerprint recognition module is to be integrated in the display area of ​​the display device, not only the capacitive fingerprint recognition is required to have high touch accuracy, but also the size of the touch unit in the touch structure is also required to be relatively high. , and the integration of the capacitive fingerprint recognition module in the display area of ​​the display device will lead to a significant increase in the processing difficulty and cost of the touch IC (Integrate Circuit, integrated circuit), so the integration of the capacitive fingerprint recognition module in the display of the display device Difficult to achieve

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