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A backlight optical fingerprint recognition system and an electronic device

A technology of fingerprint recognition and fingerprint recognition module, which is applied in character and pattern recognition, instruments, computer parts, etc., and can solve problems such as the inability to realize fingerprint detection

Active Publication Date: 2019-07-26
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a rear optical fingerprint recognition system and an electronic device to solve the problem that the existing optical fingerprint recognition module cannot realize fingerprint detection in the rear mode of the electronic device

Method used

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  • A backlight optical fingerprint recognition system and an electronic device
  • A backlight optical fingerprint recognition system and an electronic device
  • A backlight optical fingerprint recognition system and an electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a schematic structural diagram of a rear optical fingerprint recognition system provided in Embodiment 1 of the present invention, figure 2 It is a schematic structural diagram of another rear optical fingerprint recognition system provided in Embodiment 1 of the present invention, image 3 It is a schematic structural diagram of another rear optical fingerprint recognition system provided in Embodiment 1 of the present invention, Figure 4 It is a schematic structural diagram of another rear optical fingerprint recognition system provided in Embodiment 1 of the present invention, Figure 5 It is a fingerprint recognition flow chart of a back optical fingerprint recognition system provided by Embodiment 1 of the present invention, Image 6 It is an electronic device with a rear optical fingerprint recognition system provided by Embodiment 1 of the present invention, Figure 7 It is another electronic device with a rear optical fingerprint recognition ...

Embodiment 2

[0091] Figure 10 It is a schematic structural diagram of a rear optical fingerprint recognition system provided in Embodiment 2 of the present invention.

[0092] Further, such as Figure 10 As shown, on the basis of Embodiment 1, in this embodiment, the optical fingerprint recognition module 22 includes an optical element 221 and a fingerprint image sensor 222, and the optical element 221 is located on the side of the fingerprint image sensor 222 close to the back cover 10, The returned light passes through the optical element 221 and enters the fingerprint image sensor 222 to form a fingerprint image, that is, the optical element 221 is arranged between the back cover 10 and the fingerprint image sensor 222, specifically, the optical element 221 is arranged at a position corresponding to the fingerprint image sensor 222. At the position of , the optical element 221 can modulate the return light with fingerprint information, so that the return light enters the fingerprint i...

Embodiment 3

[0104] Figure 11 It is a schematic structural diagram of a rear optical fingerprint recognition system provided in Embodiment 3 of the present invention.

[0105] Further, on the basis of the above-mentioned embodiment two, as Figure 10 with Figure 11 As shown, in this embodiment, the optical element 221 of the optical fingerprint identification module 22 is a lens, and the convex end of the lens is set toward the fingerprint image sensor 222. The lens has a strong light-gathering ability, and the returned light is formed after passing through the lens. , so that the imageable breadth range is larger, and the formed fingerprint image is more accurate. Specifically, the lens is arranged between the rear cover 10 and the fingerprint image sensor 222, and the lens is located at a position corresponding to the fingerprint image sensor 222, and the detection light is irradiated on the finger in the fingerprint detection area of ​​the rear cover 10 to form return light, and ret...

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PUM

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Abstract

The invention provides a backlight optical fingerprint recognition system and an electronic device. The system comprises: a fingerprint detection light source and an optical fingerprint recognition module, wherein the fingerprint detection light source and the optical fingerprint recognition module are located between a display module and a back cover; the fingerprint detection light source is configured to emit detection light to a fingerprint detection area located on the back cover; the detection light forms return light when the detection light is irradiated to a finger in the fingerprintdetection area; and the optical fingerprint recognition module is configured to receive the return light and form a fingerprint, and therefore, a transmitting process of the detection light emitted from the fingerprint detection light source to the finger in the fingerprint detection area, and a transmitting process of the return light reflected from the finger and transmitted to the optical fingerprint recognition module are not affected by backlight modules or other opaque film layers, thus achieving optical fingerprint recognition in the backlight mode of an electronic device, and overcoming a problem that optical fingerprint recognition modules cannot achieve fingerprint recognition under a backlight mode of an electronic device.

Description

technical field [0001] The present application relates to the technical field of fingerprint identification, in particular to a rear optical fingerprint identification system and an electronic device. Background technique [0002] Fingerprint identification technology refers to identifying fingerprint information by sensing and analyzing the valley and ridge signals of fingerprints through fingerprint identification modules. It has the advantages of high security and convenient and quick operation, and is widely used in electronic products. Fingerprint imaging technology can be implemented in various ways such as optical imaging, capacitive imaging, and ultrasonic imaging. Among them, optical fingerprint recognition technology has gradually become a fingerprint recognition technology because of its strong penetrating ability, support for full-screen display, and simple product structure design. The mainstream of identification technology is widely used in electronic equipmen...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1324
Inventor 谢浩
Owner SHENZHEN GOODIX TECH CO LTD