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Fingerprint detection method, fingerprint detection device and electronic equipment

A fingerprint detection and finger technology, applied in character and pattern recognition, instruments, computing, etc., can solve the problems that affect the fingerprint recognition rate, reduce the area of ​​the fingerprint detection area, and defocus the edge detection area, so as to increase the fingerprint recognition area, improve Fingerprint recognition rate, improve the effect of over-focus phenomenon

Active Publication Date: 2020-11-27
SHENZHEN GOODIX TECH CO LTD
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Problems solved by technology

[0002] The application of optical fingerprint devices brings users a safe and convenient user experience. However, based on the optical imaging principle of optical components (such as lenses) in optical fingerprint devices, the focal plane of optical fingerprints is usually an arc-shaped focal plane, while optical The image plane of the sensor is a plane, which causes defocusing in the edge detection area of ​​the fingerprint detection area, that is, the actual focal length of the edge detection area is smaller than the image distance, such as figure 1 As shown, the area of ​​the effective fingerprint detection area is reduced, which affects the fingerprint recognition rate.

Method used

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  • Fingerprint detection method, fingerprint detection device and electronic equipment
  • Fingerprint detection method, fingerprint detection device and electronic equipment
  • Fingerprint detection method, fingerprint detection device and electronic equipment

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Embodiment Construction

[0061] The technical solution in this application will be described below with reference to the accompanying drawings.

[0062] As a common application scenario, the optical fingerprint system provided by the embodiment of this application can be applied to smartphones, tablet computers, and other mobile terminals with display screens or other terminal devices; more specifically, in the above terminal devices, fingerprint recognition The device may specifically be an optical fingerprint device, which may be arranged in a partial or entire area under the display screen, thereby forming an under-display optical fingerprint system.

[0063] Figure 2A and Figure 2B It shows a schematic diagram of an electronic device to which the embodiment of the present application can be applied, wherein, Figure 2A is a schematic front view of the electronic device 10, Figure 2B for Figure 2A The shown electronic device 10 is a schematic diagram of a partial cross-sectional structure a...

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Abstract

An embodiment of the present application provides a fingerprint detection method, a fingerprint detection device, and an electronic device. The fingerprint detection method includes: when a user's finger presses a target pattern displayed in the fingerprint detection area of ​​the display screen of the electronic device, detecting The corresponding target light signal is a reflected light signal formed by reflection of the user's finger, wherein the target pattern includes a first pattern and a second pattern, and the first pattern is closer to the fingerprint detection area than the second pattern center, and the dispersion degree of the first optical signal corresponding to the first pattern is greater than the dispersion intensity of the second optical signal corresponding to the second pattern; acquiring the fingerprint information of the user's finger according to the reflected optical signal.

Description

technical field [0001] The present application relates to the technical field of optical fingerprints, and more specifically, to a fingerprint detection method, a fingerprint detection device and electronic equipment. Background technique [0002] The application of optical fingerprint devices brings users a safe and convenient user experience. However, based on the optical imaging principle of optical components (such as lenses) in optical fingerprint devices, the focal plane of optical fingerprints is usually an arc-shaped focal plane, while optical The image plane of the sensor is a plane, which leads to defocusing phenomenon in the edge detection area of ​​the fingerprint detection area, that is, the actual focal length of the edge detection area is smaller than the image distance, such as figure 1 As shown, the area of ​​the effective fingerprint detection area is reduced, which affects the fingerprint recognition rate. Contents of the invention [0003] Provided are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06F18/00
Inventor 钟松锦杜灿鸿
Owner SHENZHEN GOODIX TECH CO LTD
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