WO2022247762A1

WO2022247762A1 - Electronic device, and fingerprint unlocking method and fingerprint unlocking apparatus therefor

Info

Publication number: WO2022247762A1
Application number: PCT/CN2022/094329
Authority: WO
Inventors: 林华鑫
Original assignee: 维沃移动通信有限公司
Priority date: 2021-05-27
Filing date: 2022-05-23
Publication date: 2022-12-01
Also published as: CN113343195A

Abstract

Disclosed in the present application is an electronic device, comprising a display screen, a housing, a ridge image acquisition module and a fingerprint depth acquisition module, wherein the display screen is arranged on the housing, the display screen and the housing form a device inner cavity, and the ridge image acquisition module and the fingerprint depth acquisition module are arranged in the device inner cavity; and the display screen comprises a finger placement area, the ridge image acquisition module is used for capturing a ridge image of a finger placed in the finger placement area, the fingerprint depth acquisition module is used for detecting a depth image of the finger, and the depth image comprises depth information which can represent the distance between the corium and the epidermis of the finger.

Description

Electronic device, fingerprint unlocking method thereof, and fingerprint unlocking device

cross reference

The present invention claims the priority of the Chinese patent application submitted to the China Patent Office on May 27, 2021, with the application number 202110606462.8, and the title of the invention is "electronic equipment and its fingerprint unlocking method, and fingerprint unlocking device". References are incorporated herein.

technical field

The present application relates to the technical field of communication equipment, and in particular to an electronic equipment, a fingerprint unlocking method thereof, and a fingerprint unlocking device.

Background technique

With the improvement of user needs, the performance of electronic equipment continues to be optimized. Among them, the more prominent performance is that the security performance of electronic equipment is getting better and better. More and more electronic devices are equipped with optical fingerprint recognition modules installed under the display screen. This setting method of the optical fingerprint recognition module not only can realize fingerprint recognition, but also helps to realize a larger screen ratio.

However, the optical fingerprint identification module involved in the related art realizes the unlocking of the electronic device by acquiring the 2D fingerprint pattern. It is easier for criminals to obtain 2D fingerprint texture information and form false information for fingerprint identification. For example, criminals can print fingerprints on 2D conductive paper to form fake fingerprints, or copy 2D fingerprint texture information through ink pads to form fake fingerprints, etc. Obviously, these fake fingerprints will pass the fingerprint verification of electronic devices, which will eventually cause a relatively large security risk. It can be seen that electronic devices equipped with such optical fingerprint recognition modules still have relatively large security problems.

Contents of the invention

The present application discloses an electronic device, which can solve the problem in the related art that the electronic device can be unlocked only through 2D fingerprint lines, which leads to a relatively large security risk in the electronic device.

In order to solve the problems of the technologies described above, the application is implemented in the following way:

In the first aspect, the present application discloses an electronic device, including a display screen, a housing, a texture image acquisition module, and a fingerprint depth acquisition module, wherein:

The display screen is arranged on the housing, the display screen and the housing form a device inner cavity, and the texture image acquisition module and the fingerprint depth acquisition module are arranged in the device inner cavity;

The display screen includes a finger placement area, the texture image acquisition module is used to capture the texture image of the finger placed in the finger placement area, and the fingerprint depth acquisition module is used to detect the depth image of the finger, the The depth image includes depth information that can characterize the distance between the dermis and the epidermis of the finger.

In the second aspect, the embodiment of the present application discloses a fingerprint unlocking method for an electronic device, the electronic device is the electronic device described in the first aspect, and the fingerprint unlocking method includes:

Obtaining the texture image by the texture image acquisition module and acquiring the depth image by the fingerprint depth acquisition module;

When the texture image is the same as the preset texture image and the depth image is the same as the preset depth image, the electronic device is controlled to be unlocked.

In a third aspect, the embodiment of the present application discloses a fingerprint unlocking device for an electronic device, the electronic device is the electronic device described in the first aspect, and the fingerprint unlocking device includes:

An acquisition module, including the texture image acquisition module and the fingerprint depth acquisition module, the acquisition module is used to obtain the texture image through the texture image acquisition module and obtain the fingerprint depth acquisition module through the fingerprint depth acquisition module. Describe the depth image;

A first control module, configured to control the electronic device to unlock when the texture image is the same as the preset texture image and the depth image is the same as the preset depth image.

In the fourth aspect, the embodiment of the present application discloses a terminal device, including a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the program or the instruction is executed by the The processor realizes the steps of the fingerprint unlocking method described in the second aspect when executed.

In the fifth aspect, the embodiment of the present application discloses a readable storage medium, on which a program or an instruction is stored, and when the program or the instruction is executed by a processor, the fingerprint unlocking method described in the second aspect is implemented A step of.

The technical solution adopted in this application can achieve the following beneficial effects:

The electronic device disclosed in the embodiment of the present application transforms the electronic device in the related art, so that the electronic device realizes unlocking of the electronic device by collecting two different image information. Specifically, when the user unlocks the electronic device, the texture image acquisition module takes pictures of the user's finger placed in the finger placement area, and at the same time the fingerprint depth acquisition module also detects, and the electronic device compares the captured texture image and depth image with The preset texture image entered in advance by the user is compared with the preset depth image, and the electronic device can be unlocked only when the texture image is the same as the preset texture image and the depth image is the same as the preset depth image. Therefore, since the depth image of the user's finger is limited to the human body, even if criminals obtain the user's texture image, it is difficult to unlock the electronic device by falsification, thereby reducing the potential safety hazard of the electronic device and improving the security of the electronic device.

Description of drawings

FIG. 1 is a partial cross-sectional view of an electronic device disclosed in an embodiment of the present application;

FIG. 2 is a structural diagram of an electronic device disclosed in an embodiment of the present application;

Fig. 3 is a schematic diagram of the first area and the second area disclosed in the embodiment of the present application;

FIG. 4 is a schematic diagram of a hardware structure implementing a terminal device disclosed in an embodiment of the present application.

Explanation of reference signs:

100-display screen,

200-shell,

300-texture image acquisition module, 310-first image chip, 320-first lens, 330-first optical filter, 340-first circuit board,

400-fingerprint depth acquisition module, 410-near infrared emitter, 420-near infrared receiver, 421-second image chip, 430-second lens, 440-second filter, 450-second circuit board,

A-equipment cavity,

B-first area,

C-second area,

D-coincident area,

E-finger placement area,

1200-terminal equipment, 1201-radio frequency unit, 1202-network module, 1203-audio output unit, 1204-input unit, 12041-graphics processor, 12042-microphone, 1205-sensor, 1206-display unit, 12061-display panel, 1207-user input unit, 12071-touch panel, 12072-other input devices, 1208-interface unit, 1209-memory, 1210-processor, 1211-power supply.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein. Moreover, the objects distinguished by "first", "second" and so on are generally one type, and the number of objects is not limited, for example, there may be one first object, or there may be multiple ones. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

The technical solutions disclosed in the various embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

Please refer to FIG. 1 to FIG. 3 , the embodiment of the present application discloses an electronic device, and the disclosed electronic device includes a display screen 100 , a casing 200 and a fingerprint identification module. Wherein, the fingerprint identification module includes a texture image acquisition module 300 and a fingerprint depth acquisition module 400 .

The casing 200 is a basic component of the electronic device, and the casing 200 can provide an installation base for the display screen 100 . Wherein, the display screen 100 is a display function device of an electronic device, and the display screen 100 may be a flexible display screen, a curved display screen, or the like. Specifically, the display screen 100 is arranged on the housing 200, and at the same time, the display screen 100 and the housing 200 form a device inner cavity A, which can accommodate some other components of the electronic device, the texture image acquisition module 300 and the fingerprint depth acquisition module 300. The module 400 is disposed in the inner cavity A of the equipment. In addition, the device inner cavity A can also provide protection for some other components in the electronic device (such as a battery, the first circuit board 340 and the second circuit board 450 described later, etc.).

The display screen 100 includes a finger placement area E. As shown in FIG. Optionally, the finger placement area E may be a circular area or an oblate circular area. Specifically, the texture image acquisition module 300 is used to capture the texture image of the finger placed in the finger placement area E (that is, the 2D fingerprint texture described in the background art), and the fingerprint depth acquisition module 400 is used to detect the depth image of the finger, Wherein, the depth image includes depth information that can characterize the distance between the corium layer and the epidermis layer of the finger.

In the embodiment of this application, the user needs to input the preset texture image and preset depth image of his finger in advance. Specifically, the user places the finger in the finger placement area E, and the texture image acquisition module 300 takes pictures. The acquisition module 400 also performs measurement, and the electronic device can record the user's preset texture image and preset depth image. When the user unlocks the electronic device, the user places the finger on the finger placement area E, while the texture image acquisition module 300 captures the user's texture image, the fingerprint depth acquisition module 400 detects the depth image, and the fingerprint recognition module of the electronic device By comparing the texture image with the preset texture image and comparing the depth image with the preset depth image, when the texture image is the same as the preset texture image, and the depth image is the same as the preset depth image, the electronic device to complete the unlocking.

The electronic device disclosed in the embodiment of the present application transforms the electronic device in the related art, so that the electronic device realizes unlocking of the electronic device by collecting two different image information. Specifically, when the user unlocks the electronic device, the texture image acquisition module 300 takes a picture of the user's finger placed in the finger placement area E, and at the same time, the fingerprint depth acquisition module 400 also detects, and the electronic device combines the captured texture image and The depth image is compared with the preset texture image and preset depth image entered in advance by the user, and the electronic device can be unlocked only when the texture image is the same as the preset texture image and the depth image is the same as the preset depth image. Since the depth image of the user's finger is limited to the human body, even if criminals obtain the user's texture image, it is difficult to unlock the electronic device by forgery, thereby reducing the potential safety hazard of the electronic device and improving the security of the electronic device.

It should be noted that, herein, the distance between the dermis and the epidermis refers to the depth of the dermis, that is, the distance between the outer surface of the epidermis and the dermis.

In the embodiment of the present application, the texture image acquisition module 300 may include a first circuit board 340 and a first image chip 310 disposed on the first circuit board 340, the first circuit board 340 supplies power to the first image chip 310, specifically Ground, the first image chip 310 is electrically connected to the first circuit board 340 . The first image chip 310 can be used to sense the visible light emitted by the display screen 100 and reflected by the finger, and finally form the texture image of the finger. Wherein, when the user's finger is placed on the finger placement area E, the finger placement area E is also slightly squeezed and deformed, and the visible light is transmitted to the first image chip 310 through the total reflection of the deformed finger placement area E, thereby Form a textured image.

In a further technical solution, the fingerprint depth acquisition module 400 may include a near-infrared transmitter 410 and a near-infrared receiver 420, wherein the near-infrared receiver 420 may include a second image chip 421 and a second circuit board 450, specifically , the second image chip 421 may be disposed on the second circuit board 450 , the second image chip 421 is electrically connected to the second circuit board 450 , and then powered by the second circuit board 450 . The near-infrared light emitted by the near-infrared emitter 410 can be received by the second image chip 421 after being reflected by the display screen 100 and the finger in sequence. Wherein, the near-infrared light can pass through the display screen 100 to reach the epidermis of the finger, and even pass through the epidermis to reach the dermis. Then, the dermis and epidermis of the finger reflect the near-infrared light to the second image chip 421. Since there is a distance between the dermis and the epidermis, the near-infrared light that respectively reaches both of them cannot reach the second image chip 421 after reflection. Two image chips 421, the second image chip 421 can respectively receive the near-infrared light reflected from the epidermis and the near-infrared light reflected from the dermis, and finally present it on the depth image, and then analyze the depth image through the time-of-flight method (TOF) method), it is possible to obtain in-depth information.

Of course, the fingerprint depth acquisition module 400 does not necessarily have to use near-infrared light, and can also acquire depth images through other light rays that can penetrate the epidermis of the finger and reach the dermis. This application does not limit this.

The electronic device disclosed in the embodiment of the present application may be provided with a flexible circuit board, one end of the flexible circuit board is connected to the first circuit board 340, and the other end of the flexible circuit board is connected to the second circuit board 450, so that the first circuit board 340 and the second circuit board 450 are connected. The electrical connection between the second circuit boards 450 or the power supply cooperation between the two, meanwhile, the flexible circuit board is foldable, so that the flexible circuit board can be placed in the inner cavity A of the device without interfering with other components. Of course, other methods can also be used. In another optional solution, the first circuit board 340 and the second circuit board 450 can be in an integrated structure, and the integrated structure can integrate the first circuit board 340 and the second circuit board. The function of 450 can also optimize the spatial layout of the first circuit board 340 and the second circuit board 450 in the inner cavity A of the equipment, avoiding the cumbersome installation problems caused by the large space occupation and the need for separate installation of the two separately installed.

In the embodiment of the present application, the texture image acquisition module 300 may include a first lens 320 and a first filter 330, specifically, the first lens 320 may be set on the first circuit board 340 and cover the first on the image chip 310, so that the first lens 320 can provide protection for the first image chip 310, and the first lens 320 can also adjust the direction and angle of visible light by means of refraction, so that the visible light can be transmitted to the first image chip 310 , the first filter 330 can be covered on the first image chip 310, and the first filter 330 is used to filter out near-infrared light, thereby preventing the near-infrared light emitted by the near-infrared emitter 410 from being doped on the display screen 100 In the visible light, thereby preventing the user's texture image captured by the texture image acquisition module 300 from being affected, and thus helping to ensure the accuracy of the texture image captured by the texture image acquisition module 300 .

In a further technical solution, the fingerprint depth acquisition module 400 may also include a second lens 430 and a second filter 440. Specifically, the second lens 430 may be set on the second circuit board 450 and cover the second On the second image chip 421, so that the second lens 430 can provide protection for the second image chip 421, and the second lens 430 can also adjust the direction angle of the near-infrared light by means of refraction, so that the near-infrared light can be transmitted to the second image chip 421. At the second image chip 421, the second optical filter 440 can be covered on the second image chip 421, and the second optical filter 440 is used to filter out visible light, so as to prevent the visible light emitted by the display screen 100 from being doped in the near-infrared emitter 410. The emitted near-infrared light prevents the depth image captured by the fingerprint depth acquisition module 400 from being affected, thereby helping to ensure the accuracy of the depth image detected by the fingerprint depth acquisition module 400 .

In the embodiment of the present application, the field of view area corresponding to the texture image acquisition module 300 on the display screen 100 may be the first area B, and the field of view area corresponding to the fingerprint depth acquisition module 400 on the display screen 100 may be the second area B. Area C.

In an optional solution, the first area B and the second area C do not overlap at all. The user needs to place a finger on the first area B first, and then place a finger on the second area C. In this case, the electronic device first compares and confirms the texture image with the preset texture image, and then compares and confirms the depth image with the preset depth image. If the texture image is different from the preset texture image, or the depth image is the same as When the preset depth images are different, the user repositions the finger according to the above operation method. Alternatively, the user needs to place the first finger on the first area B and the second finger on the second area C at the same time. In this case, while comparing and confirming the texture image of the first finger with the preset texture image, the electronic device also compares and confirms the depth image of the second finger with the preset depth image. When the images are different, or the depth image is different from the preset depth image, the user repositions the finger according to the above operation method. Although this method can also realize identification, it is not convenient for users to use in practice.

Based on this, in another optional solution, the first area B and the second area C may partially overlap, and the overlapping area is the overlapping area D. In this case, when the user's fingers only need to completely cover the overlapping area D, the texture image acquisition module 300 can capture the texture image while the fingerprint depth acquisition module 400 can also detect the depth image, which undoubtedly can achieve When the user presses once, it can be detected by the texture image acquisition module 300 and the fingerprint depth acquisition module 400 at the same time.

In a further technical solution, the area ratio of the overlapping area D to the finger placement area E can be ≥50%. presses. This structure not only improves the unlocking efficiency of the electronic device, but also partially overlaps the first area B and the second area C to reduce excessive occupancy of the area of the display screen 100 by the finger placement area E.

In a further technical solution, the first area B may be located within the finger placement area E, which is conducive to obtaining a relatively complete texture image. Since the depth information does not need to rely on the detection of a large area, part of the second area C can be located within the finger placement area E.

Specifically, the angle of view of the fingerprint depth acquisition module 400 may be the first angle of view, the angle of view of the texture image acquisition module 300 may be the second angle of view, and the first angle of view is greater than the second angle of view , in this case, since the fingerprint depth acquisition module 400 does not need to take pictures of a larger area of the finger, the second field of view is designed to be larger than the first field of view, which is more conducive to the fingerprint depth acquisition module 400 The spacing between the texture image acquisition module 300 and the texture image acquisition module 300 avoids the difficulty in assembly caused by the two being too close together.

Based on the electronic device disclosed in the embodiment of the present application, the embodiment of the present application discloses a fingerprint unlocking method for an electronic device, the electronic device involved is the electronic device described in the above embodiment, and the fingerprint unlocking method includes:

Step 101, acquire the texture image by the texture image acquisition module 300 and acquire the depth image by the fingerprint depth acquisition module 400;

In this step, the visible light emitted by the display screen 100 is reflected by the finger to the first image chip 310 to form a texture image, and the near-infrared light emitted by the near-infrared emitter 410 is transmitted to the At the second image chip 421 , the dermis and epidermis of the finger can reflect near-infrared light to the second image chip 421 , so that the second image chip 421 can detect the depth image of the finger through the near-infrared light.

Step 102 , if the texture image is the same as the preset texture image and the depth image is the same as the preset depth image, control the electronic device to unlock.

In the fingerprint unlocking method disclosed in the embodiment of the present application, it is possible to simultaneously compare whether the texture image is consistent with the preset texture image and whether the depth image is consistent with the preset depth image, and then perform corresponding processing according to the comparison result.

In a further technical solution, after the texture image is acquired by the texture image acquisition module 300, the fingerprint unlocking method disclosed in the embodiment of the present application may further include:

Step 201, judging whether the texture image is the same as the preset texture image;

Step 202, if the texture image is the same as the preset texture image, determine whether the depth image is the same as the preset depth image;

In this step, when the texture image taken by the texture image acquisition module 300 is the same as the pre-stored texture image entered by the user in advance, the ratio of the depth image detected by the fingerprint depth acquisition module 400 to the pre-stored depth image entered by the user in advance can be performed. to confirm.

Step 203 , in the case that the texture image is different from the preset texture image, send out an unlock failure prompt message or a re-press prompt message.

In this case, once the fingerprint image is not the same as the pre-stored texture image, the unlock failure prompt message or re-press prompt message will be issued directly. This process does not need to compare the depth image with the preset depth image, which will undoubtedly improve the recognition efficiency. , to reduce useless identification process.

Of course, it is also possible to compare the depth image with the preset depth image first, and then compare the texture image with the preset texture image when the depth image is the same as the preset depth image. Once the depth image is not the same as the preset depth image, a prompt message of unlocking failure or a re-press prompt message is directly issued. Since the depth image has less information, the comparison is quicker. Therefore, comparing the depth image with the preset depth image first can further improve the recognition efficiency.

In a further technical solution, the fingerprint unlocking method disclosed in the embodiment of the present application may also include:

Step 301, detecting the contact area between the finger placement area E and the finger;

Step 302 , in the case that the contact area is less than half of the area of the finger placement area E, send out an unlock failure prompt message or a re-press prompt message.

In this step, if the area where the user's finger is placed is less than half of the finger placement area E, the overlapping area D covered by the user's finger is small, which is not conducive to obtaining a relatively complete texture image, resulting in the texture image acquisition module 300 being relatively small. It is difficult to capture texture images and the fingerprint depth acquisition module 400 is also difficult to detect depth images, which will cause troubles for recognition. In this case, a prompt message for unlocking failure or a re-press prompt message is issued to remind the user to change the pressing position so as to perform the next identification as early as possible, which undoubtedly facilitates the user's use.

Based on the electronic device disclosed in the embodiment of the present application, the embodiment of the present application discloses a fingerprint unlocking device, the electronic device involved is the electronic device described in the above embodiment, and the fingerprint unlocking device includes:

The acquisition module includes a texture image acquisition module 300 and a fingerprint depth acquisition module 400, the acquisition module is used to acquire a texture image by the texture image acquisition module 300 and acquire a depth image by the fingerprint depth acquisition module 400;

The first control module is configured to control the unlocking of the electronic device when the texture image is the same as the preset texture image and the depth image is the same as the preset depth image.

In an optional solution, the fingerprint unlocking device may also include:

The first judging module is used to judge whether the texture image is the same as the preset texture image;

The second judging module is used to judge whether the depth image is the same as the preset depth image when the texture image is the same as the preset texture image;

The second control module is used to control the sending of the prompt message of unlocking failure or the prompt message of re-pressing when the texture image is different from the preset texture image.

In a further technical solution, the fingerprint unlocking device may also include:

The detection module is used to detect the contact area between the finger placement area E and the finger;

Calculation module, for calculating the first ratio of the contact area and the area of the finger placement area E:

The second control module is configured to issue an unlock failure prompt message or a re-press prompt message when the first ratio is less than 0.5.

Since the fingerprint unlocking device for electronic equipment disclosed in the embodiment of the present application corresponds to the fingerprint unlocking method for electronic equipment described in the above embodiment, the corresponding part can refer to the corresponding description of the fingerprint unlocking method above. No longer.

The electronic devices disclosed in the embodiments of the present application can be mobile phones, computers, e-book readers, game consoles, wearable devices, etc. Of course, the electronic devices can also be other types of devices, and the embodiments of the present application do not limit the specific types of electronic devices .

FIG. 4 is a schematic diagram of a hardware structure of a terminal device implementing various embodiments of the present application.

The terminal device 1200 includes, but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, a processor 1210, and Power supply 1211 and other components. Those skilled in the art can understand that the structure of the terminal device 1200 shown in FIG. layout of the components. In the embodiment of the present application, the terminal devices include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.

Wherein, the sensor 1205 may include a first image chip 310 and a second image chip 421 for detecting the texture image and the depth image of the user's finger. The first image chip 310 and the second image chip 421 may be photosensitive sensors, and the processor 1210 obtains the photosensitive relationship of the user's finger based on the photosensitive relationship between the first image chip 310 and visible light and the photosensitive relationship between the second image chip 421 and near-infrared light. texture image and depth image.

It should be understood that, in this embodiment of the present application, the radio frequency unit 1201 can be used for receiving and sending signals during information sending and receiving or during a call. Specifically, the downlink data from the base station is received and processed by the processor 1210; Uplink data is sent to the base station. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 1201 can also communicate with the network and other devices through a wireless communication system.

The terminal device provides users with wireless broadband Internet access through the network module 1202, such as helping users send and receive emails, browse web pages, and access streaming media.

The audio output unit 1203 may convert audio data received by the radio frequency unit 1201 or the network module 1202 or stored in the memory 1209 into an audio signal and output as sound. Also, the audio output unit 1203 may also provide audio output related to a specific function performed by the terminal device 1200 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 1203 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1204 is used to receive audio or video signals. The input unit 1204 may include a graphics processing unit (Graphics Processing Unit, GPU) 12041 and a microphone 12042, and the graphics processing unit 12041 controls still pictures or video images obtained by an image capturing device (such as a camera) in video capture mode or image capture mode The data is processed. The processed image frames may be displayed on the display unit 1206 . The image frames processed by the graphics processor 12041 may be stored in the memory 1209 (or other storage media) or sent via the radio frequency unit 1201 or the network module 1202 . The microphone 12042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into an output format transmittable to a mobile communication base station via the radio frequency unit 1201 in case of a phone call mode.

The terminal device 1200 also includes at least one sensor 1205, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 12061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 12061 and the / or backlighting. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the posture of terminal equipment (such as horizontal and vertical screen switching, related games) , magnetometer attitude calibration), vibration recognition-related functions (such as pedometer, knocking), etc.; the sensor 1205 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be repeated here.

The display unit 1206 is used to display information input by the user or information provided to the user. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like.

The user input unit 1207 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the terminal device. Specifically, the user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 12071 or near the touch panel 12071 operate). The touch panel 12071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the For the processor 1210, receive the command sent by the processor 1210 and execute it. In addition, the touch panel 12071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 12071 , the user input unit 1207 may also include other input devices 12072 . Specifically, other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Furthermore, the touch panel 12071 can be covered on the display panel 12061, and when the touch panel 12071 detects a touch operation on or near it, it will be sent to the processor 1210 to determine the type of the touch event, and then the processor 1210 will The type of event provides a corresponding visual output on the display panel 12061. Although in FIG. 4, the touch panel 12071 and the display panel 12061 are used as two independent components to realize the input and output functions of the terminal device, in some embodiments, the touch panel 12071 and the display panel 12061 can be integrated The implementation of the input and output functions of the terminal device is not specifically limited here.

The interface unit 1208 is an interface for connecting an external device to the terminal device 1200 . For example, an external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 1208 can be used to receive input from an external device (for example, data information, power, etc.) transfer data between devices.

The memory 1209 can be used to store software programs as well as various data. The memory 1209 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of terminal equipment (such as audio data, phonebook, etc.), etc. In addition, the memory 1209 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The processor 1210 is the control center of the terminal equipment, which uses various interfaces and lines to connect various parts of the entire terminal equipment, runs or executes software programs and/or modules stored in the memory 1209, and calls data stored in the memory 1209 , execute various functions of the terminal equipment and process data, so as to monitor the terminal equipment as a whole. The processor 1210 may include one or more processing units; optionally, the processor 1210 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem processor The tuner processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 1210 .

The terminal device 1200 may also include a power supply 1211 (such as a battery) for supplying power to various components. Optionally, the power supply 1211 may be logically connected to the processor 1210 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.

In addition, the terminal device 1200 includes some functional modules not shown, which will not be repeated here.

Optionally, this embodiment of the present application discloses a terminal device, including a processor 1210, a memory 1209, and a program or instruction stored in the memory 1209 and operable on the processor 1210. When the program or instruction is executed by the processor 1210 Each process of any of the above method embodiments can achieve the same technical effect, so in order to avoid repetition, details are not repeated here.

The embodiment of the present application discloses a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the processor 1210, each process of any of the above-mentioned method embodiments can be realized, and the same technical effect can be achieved , to avoid repetition, it will not be repeated here. Wherein, the readable storage medium is, for example, a read-only memory (Read-Only Memory, referred to as ROM), a random access memory (Random Access Memory, referred to as RAM), a magnetic disk or an optical disk, etc.

The embodiment of the present application discloses a computer program product, the computer program product is stored in a non-volatile storage medium, and the program product is configured to be executed by at least one processor to implement the control method as described above step.

The embodiment of the present application discloses a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the control method described in the above embodiments .

The above-mentioned embodiments of this application focus on the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, here No longer.

The above descriptions are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

An electronic device, which includes a display screen (100), a housing (200), a texture image acquisition module (300) and a fingerprint depth acquisition module (400), wherein:

The display screen (100) is arranged on the housing (200), the display screen (100) and the housing (200) form a device inner chamber (A), and the texture image acquisition module (300) and the fingerprint depth acquisition module (400) is set in the device inner cavity (A);

The display screen (100) includes a finger placement area (E), the texture image acquisition module (300) is used to photograph the texture image of a finger placed in the finger placement area (E), and the fingerprint depth acquisition module A group (400) is used to detect a depth image of the finger, the depth image including depth information characterizing the distance between the dermis and epidermis of the finger.
The electronic device according to claim 1, wherein the texture image acquisition module (300) comprises a first circuit board (340) and a first image chip (310) disposed on the first circuit board (340) ), the first image chip (310) is used to sense the visible light emitted by the display screen (100) and reflected by the finger, and the fingerprint depth acquisition module (400) includes a near-infrared emitter (410 ) and a near-infrared receiver (420), the near-infrared receiver (420) includes a second image chip (421) and a second circuit board (450), and the second image chip (421) is located on the first On the second circuit board (450), the near-infrared light emitted by the near-infrared emitter (410) can be received by the second image chip (421) after being reflected by the display screen (100) and the finger in sequence , the first circuit board (340) and the second circuit board (450) are in an integrated structure.
The electronic device according to claim 2, wherein the texture image acquisition module (300) comprises a first lens (320) and a first filter (330), and the first lens (320) is set on the on the first circuit board (340), and cover on the first image chip (310), the first filter (330) covers the first image chip (310), the The first filter (330) is used to filter out the near-infrared light.
The electronic device according to claim 2, wherein the fingerprint depth acquisition module (400) further comprises a second lens (430) and a second filter (440), and the second lens (430) is located at The second circuit board (450) is covered on the second image chip (421), and the second filter (440) is covered on the second image chip (421), so The second filter (440) is used to filter out the visible light.
The electronic device according to claim 1, wherein the field of view area corresponding to the texture image acquisition module (300) on the display screen (100) is the first area (B), and the fingerprint depth acquisition module The field of view area corresponding to the group (400) on the display screen (100) is the second area (C), the first area (B) partially overlaps with the second area (C), and overlaps with each other The area is an overlapping area (D), and the area ratio of the overlapping area (D) to the finger placement area (E) is ≥50%.
The electronic device according to claim 5, wherein the first area (B) is located within the finger placement area (E), and part of the second area (C) is located within the finger placement area (E ), the angle of view of the fingerprint depth acquisition module (400) is the first angle of view, the angle of view of the texture image acquisition module (300) is the second angle of view, and the first The viewing angle is larger than the second viewing angle.
A fingerprint unlocking method for an electronic device, applicable to the electronic device according to any one of claims 1 to 6, wherein the fingerprint unlocking method comprises:

Obtaining the texture image by the texture image acquisition module (300) and acquiring the depth image by the fingerprint depth acquisition module (400);

When the texture image is the same as the preset texture image and the depth image is the same as the preset depth image, the electronic device is controlled to be unlocked.
The fingerprint unlocking method according to claim 7, wherein, after acquiring the texture image by the texture image acquisition module (300), further comprising:

judging whether the texture image is the same as the preset texture image;

If the texture image is the same as the preset texture image, determine whether the depth image is the same as the preset depth image;

In the case that the texture image is different from the preset texture image, an unlock failure prompt message or a re-press prompt message is issued.
The fingerprint unlocking method according to claim 7, further comprising:

Detecting the contact area between the finger placement area (E) and the finger;

In the case that the contact area is less than half of the area of the finger placement area (E), an unlock failure prompt message or a re-press prompt message is issued.
A fingerprint unlocking device for an electronic device, wherein the electronic device is the electronic device according to claims 1 to 6, and the fingerprint unlocking device comprises:

An acquisition module, including the texture image acquisition module (300) and the fingerprint depth acquisition module (400), the acquisition module is used to acquire the texture image through the texture image acquisition module (300) and pass The fingerprint depth acquisition module (400) acquires the depth image;

A first control module, configured to control the electronic device to unlock when the texture image is the same as the preset texture image and the depth image is the same as the preset depth image.
The fingerprint unlocking device according to claim 10, wherein the fingerprint unlocking device further comprises:

A first judging module, configured to judge whether the texture image is the same as the preset texture image;

A second judging module, configured to judge whether the depth image is the same as the preset depth image when the texture image is the same as the preset texture image;

The second control module is configured to control sending out an unlock failure prompt message or a re-press prompt message when the texture image is different from the preset texture image.
The fingerprint unlocking device according to claim 10, wherein the fingerprint unlocking device further comprises:

A detection module, configured to detect the contact area between the finger placement area (E) and the finger;

Calculation module, for calculating the first ratio of the contact area and the area of the finger placement area (E):

The second control module is configured to issue an unlock failure prompt message or a re-press prompt message when the first ratio is less than 0.5.
A terminal device, including a processor (1210), a memory (1209), and a program or instruction stored in the memory (1209) and operable on the processor (1210), the program or the When the instructions are executed by the processor (1210), the steps of the fingerprint unlocking method described in any one of claims 7 to 9 are realized.
A readable storage medium, wherein a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by the processor (1210), the fingerprint according to any one of claims 7 to 9 is realized Steps of the unlock method.