WO2020253615A1

WO2020253615A1 - Fingerprint processing method, and electronic apparatus

Info

Publication number: WO2020253615A1
Application number: PCT/CN2020/095634
Authority: WO
Inventors: 张海平
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-06-20
Filing date: 2020-06-11
Publication date: 2020-12-24
Also published as: CN110287852A

Abstract

The present application provides a fingerprint processing method and an electronic apparatus. The fingerprint processing method comprises: upon detecting a fingerprint acquisition request, determining a pressing region of a user finger; determining, according to the pressing region, a signal receiving region of a fingerprint sensing module; receiving a fingerprint detection signal via the fingerprint receiving region, wherein the fingerprint sensing module is capable of acquiring a signal from a specific angle in the signal detection signal, shielding a signal from an angle other than the specific signal, and performing processing to form a fingerprint image, the fingerprint detection signal is formed by an initial detection signal that has entered the user finger and exited from a contact region between the finger and an electronic apparatus, the signal from the specific angle is formed by a signal exiting from a fingerprint ridge region, and the signal from an angle other than the specific angel is formed by a signal exiting from a fingerprint valley region. Since the fingerprint sensing module only acquires signals from a fingerprint ridge region, the invention enables accurate identification of information at a fingerprint ridge when a signal magnitude of the fingerprint ridge region differs only slightly from a signal magnitude of a valley region, thereby improving a fingerprint identification rate.

Description

Fingerprint processing method and electronic equipment

Technical field

This application relates to the technical field of fingerprint identification, and specifically relates to fingerprint processing methods and electronic equipment.

Background technique

At present, the mobile phone collects fingerprints by comparing the area where the ridge of the fingerprint is illuminated by light and the area where the display is in contact with the display, and the valley where the fingerprint illuminates is opposite to the display. Compare the reflectivity of the ridge and the valley where the light illuminates. Identify user fingerprints. However, when the contact between the finger and the display screen is not ideal, the difference between the reflectance at the ridge of the light and the valley where the light is irradiated is not very large, which leads to inaccurate fingerprint recognition and reduces the fingerprint recognition rate.

Summary of the invention

This application provides a fingerprint processing method and electronic equipment.

This application provides a fingerprint processing method, which is applied to an electronic device, the electronic device includes a fingerprint sensor module, and the fingerprint processing method includes:

When a fingerprint collection request is detected, determine the pressing area of the user's finger;

Determining the signal receiving area of the fingerprint sensor module according to the pressing area;

The fingerprint detection signal is received through the signal receiving area, the fingerprint sensor module can collect the specific angle signal in the fingerprint detection signal and shield the non-specific angle signal, and form a fingerprint image after processing, wherein the fingerprint detection signal is determined by the environment The signal or/and the initial detection signal emitted by the fingerprint detection signal source enters the user's finger and exits through the area where the finger contacts the electronic device. The specific angle signal is formed by the fingerprint ridge area. The non-specific angle signal It is formed from the fingerprint valley area.

The application provides an electronic device, wherein the electronic device includes a display screen and a fingerprint sensor module, the display screen has a front face facing the user and a back face opposite to the front face, and the fingerprint sensor module Fixed on the back of the display screen, the fingerprint sensor module is used to receive the fingerprint detection signal emitted by the user's fingerprint, can collect the specific angle signal in the fingerprint detection signal and shield the non-specific angle signal, and form a fingerprint image after processing. Wherein, the fingerprint detection signal is formed by the environmental signal or/and the initial detection signal emitted by the fingerprint detection signal source after entering the user's finger and exiting through the area where the finger contacts the electronic device, and the specific angle signal is exiting from the fingerprint ridge area The non-specific angle signal is formed by emitting the fingerprint valley area.

After the initial detection signal emitted by the environmental signal or/and the fingerprint detection signal source enters the user's finger, it is refracted by the interface between the ridge area of the fingerprint and the electronic device to form a specific angle signal, and the initial detection signal contacts the air through the valley area of the fingerprint The interface refraction forms a non-specific angle signal. The fingerprint sensor module can collect the specific angle signal while shielding the non-specific angle signal, so that the fingerprint sensor module only collects the signal in the fingerprint ridge area, and realizes the fingerprint ridge area When the difference between the signal amount and the signal amount in the valley area is small, the information at the fingerprint ridge can still be accurately identified, thereby improving the fingerprint recognition rate.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

FIG. 1 is a schematic flowchart of a fingerprint processing method provided by an embodiment of the present application;

2 is a schematic diagram of an electronic device to which the fingerprint processing method provided by an embodiment of the present application is applied;

FIG. 3 is a schematic diagram of an electronic device to which the fingerprint processing method provided by another embodiment of the present application is applied;

Fig. 4 is an enlarged schematic diagram of part III of Fig. 2;

FIG. 5 is a schematic diagram of an electronic device to which the fingerprint processing method provided by another embodiment of the present application is applied;

FIG. 6 is another schematic diagram of an electronic device to which the fingerprint processing method provided by an embodiment of the present application is applied;

FIG. 7 is another schematic diagram of an electronic device to which the fingerprint processing method provided by an embodiment of the present application is applied;

8 is a schematic cross-sectional view of an electronic device provided by an embodiment of the present application;

FIG. 9 is another schematic cross-sectional view of an electronic device provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of an electronic device provided by another embodiment of the present application;

FIG. 11 is a schematic diagram of an electronic device provided by another embodiment of the present application;

FIG. 12 is a schematic diagram of an electronic device provided by another embodiment of the present application;

FIG. 13 is another schematic diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

The embodiments of the present application provide electronic devices for fingerprint processing methods. The electronic devices may be devices such as mobile phones, tablet computers, notebook computers, media players, etc., and may also be financial terminal devices such as automated teller machines (ATMs).

Please refer to FIG. 1 and FIG. 2. The present application provides an electronic device 200 including a display screen 100 and a fingerprint sensor module 40. The display screen 100 has a front side 101 facing the user and a back side 102 opposite to the front side 101. The fingerprint sensor module 40 is fixed on the back 102 of the display screen 100. The fingerprint sensor module 40 obtains a user fingerprint detection signal through the display screen 100.

The present application also provides a fingerprint processing method, which is applied to the electronic device 200, and the fingerprint processing method includes the steps:

101: When a fingerprint collection request is detected, determine the pressing area A of the user's finger.

Specifically, the electronic device 200 may detect the fingerprint collection request through devices such as a touch sensor, a key switch, a camera, a distance sensor, and a receiver. For example, when the electronic device 200 detects a fingerprint collection request through the touch layer of the display screen 100, the touch layer senses the user's touch signal within a preset period of time, and it is confirmed that the electronic device 200 has detected the fingerprint collection request. Alternatively, a gesture may be preset, and when the gesture input is received on the touch layer of the display screen 100, it is confirmed that the electronic device 200 has detected the fingerprint collection request. For another example, when the electronic device 200 detects a fingerprint collection request through a microphone and a distance sensor, it may receive a user's voice instruction through the microphone and send it to the controller, and the controller analyzes the corresponding voice content according to the voice instruction. If the voice content includes content such as "fingerprint collection" or "fingerprint recognition", it is confirmed that the electronic device 200 has detected the fingerprint collection request.

It can be understood that the display screen 100 of the electronic device 200 has a fingerprint recognition area. When the electronic device 200 detects the fingerprint collection request, it determines the pressing area A of the user's finger in the fingerprint recognition area of the display screen 100. Wherein, the fingerprint recognition area may be a full-screen area of the display screen 100, may also be a partial area of the display screen 100, or may be a preset area of the display screen 100. Specifically, the fingerprint recognition area of the display screen 100 is the orthographic projection area of the fingerprint sensor module 40 on the display screen 100. Wherein, the pressing area A is the area where the user's finger contacts the display screen 100 or the area where the user's finger approaches the display screen 100 and forms an orthographic projection on the display screen 100.

Of course, in other embodiments, the electronic device 200 may also be provided with a fingerprint recognition area on the back shell. The fingerprint sensor module 40 can also be stacked inside the back shell. The fingerprint sensor module 40 forms a fingerprint recognition area on the front projection area of the back shell. When the user's finger touches the fingerprint recognition area of the back shell, the pressing sensor device of the back shell detects the pressing of the user's finger, and the pressing sensor device determines the pressing area A in the fingerprint recognition area, and the fingerprint sensor module 40 The user's fingerprint detection signal is received through the pressing area A of the back shell.

In one embodiment, when the electronic device 200 senses the touch signal of a finger of the user in the fingerprint recognition area through the touch layer of the display screen 100, it detects a fingerprint collection request and performs the request according to the The touch signal sensed by the touch layer determines an area where a user's finger contacts the display screen 100 as a pressing area A, so as to facilitate collecting a fingerprint image of a user's finger according to a pressing area A.

In another embodiment, when the electronic device 200 senses the touch signals of multiple fingers of the user in the fingerprint recognition area through the touch layer of the display screen 100, it detects multiple fingerprint collection requests, and then The multiple touch signals sensed by the touch layer determine multiple areas where the user’s multiple fingers are in contact with the display screen 100 as multiple pressing areas A, so as to facilitate collecting the user’s multiple fingers according to the multiple pressing areas A. Fingerprint image.

The fingerprint processing method includes the steps:

102: Determine the signal receiving area B of the fingerprint sensor module 40 according to the pressing area A.

In this embodiment, the signal receiving area B is formed on the fingerprint sensor module. The signal receiving area B completely corresponds to the area where the user's finger touches the display screen 100. That is, the signal receiving area B completely corresponds to the pressing area A. The fingerprint sensing surface of the fingerprint sensing module 40 may be larger than the signal receiving area B. The fingerprint sensing surface of the fingerprint sensing module 40 may also coincide with the signal receiving area B.

In one embodiment, the fingerprint sensor module 40 is provided with a fingerprint sensor surface 401, and the fingerprint sensor surface 401 completely overlaps the display screen 100. When a user's finger touches any position on the front 101 of the display screen 100, the fingerprint sensor module 40 can receive a user fingerprint detection signal via the display screen 100, so that the electronic device 200 can realize full-screen fingerprint recognition Unlock.

In another embodiment, as shown in FIG. 3, the sensing surface 401 of the fingerprint sensing module 400 is partially opposite to the display screen 100. The user's finger needs to touch the area on the display screen 100 opposite to the fingerprint sensor module 400 to enable the fingerprint sensor module 400 to receive the fingerprint detection signal of the user's finger. When the touch layer of the display screen 100 senses that the pressing area A of the user's finger exceeds the sensing surface 401 of the fingerprint sensor module 40, the display screen 100 can be in contact with the fingerprint sensor module 40 The relative area of the sensing surface 401 sends out an identification signal to prompt the user to move the finger to the area opposite to the sensing surface 401 of the fingerprint sensor module 40 to perform a fingerprint recognition operation. When the touch layer of the display screen 100 senses that the pressing area A of the user's finger is located in the area opposite to the sensing surface 401 of the sensor module 40, the sensing surface 401 is determined according to the pressing area A On the signal receiving area B.

103: Determine a signal transmission area C according to the pressing area A, so that the signal transmission area C can pass the fingerprint detection signal emitted from the user's finger.

In this embodiment, the signal transmission area C is an area on the display screen 100 that can transmit light signals, that is, when the fingerprint detection signal is an optical signal, the signal transmission area can transmit the fingerprint detection signal. The signal transmission area C covers at least the pressing area A. After the display screen 100 receives the sensing signal of the pressing area A, it controls part or all of the area to be turned off according to the sensing signal of the pressing area A to form the signal transmission area C. Of course, in other embodiments, if the fingerprint detection signal is an ultrasonic signal, the signal transmission area C may be an air-free area on the display screen 100. If the fingerprint detection signal is an electromagnetic signal, the signal transmission area C may be an area without electromagnetic signals on the display screen 100.

As an implementation manner, please refer to FIG. 2 and FIG. 4 together. The display screen 100 is in a fully off state, so that all display areas of the display screen 100 do not emit light and form the signal transmission area C. The area of the signal transmission area C is increased to increase the fingerprint recognition area and reduce the power consumption of the display screen 100 to achieve the purpose of energy saving.

When the user's finger presses on the front surface 101 of the display screen 100, the user's finger has a contact area 01 in contact with the display screen 100 and an edge area 02 located at the edge of the contact area 01. There is a distance between the edge area 02 and the front surface 101, and the edge area 02 can receive an environmental signal, so that the environmental signal enters the user's finger through the edge area 02 as an initial detection signal. The environmental signal may be sunlight, illuminating light, or ambient light of a display light of an external device.

After the display screen 100 is in the full-screen state, the environmental signal enters the user's finger through the edge area 02 as the initial detection signal, and the initial detection signal is conducted within the user's finger to the contact area 01, so that the contact The area 01 forms a "virtual signal source" to facilitate the fingerprint sensing module 40 to detect the "virtual signal source" and to facilitate identification of fingerprint information in the contact area 01. After the initial detection signal is transmitted to the contact area 01, it is emitted to the display screen 100 through the contact area 01 to form a fingerprint detection signal, and the display screen 100 is in a full-screen off state, that is, any position in the display area of the display screen 100 The fingerprint detection signal can be transmitted to increase the transmittance of the display screen 100 to the fingerprint detection signal.

In this embodiment, after determining the pressing area A, the display screen 100 may perform a full screen extinguishing process according to the pressing area A. The display screen 100 may also perform a full screen off process according to the fingerprint collection request after detecting the fingerprint collection request. The display screen 100 may also perform a full screen off process according to a screen off instruction before detecting a fingerprint collection request. After the display screen 100 is fully turned off, the display area of the display screen 100 does not emit light, so that when the fingerprint detection signal of the user's finger is a light signal, the display area of the display screen 100 can conduct the user fingerprint detection signal. That is, after the full screen of the display screen 100 is turned off, the ambient light emitted by the ambient light source can be used as the initial detection signal for detecting the user's fingerprint. After the display screen 100 is fully turned off, the display area of the display screen 100 does not emit light. It can also be convenient for the user's fingers to receive only ambient light, that is, to facilitate the user's fingers to receive only environmental signals, so that the electronic device 200 is Fingerprint recognition is performed without lighting the display screen 100, so as to achieve the effect of energy saving and power saving. The sensing surface 401 of the fingerprint sensor module 40 is completely overlapped with the display screen 100, that is, when the display screen 100 is completely off, the user's finger touches any position of the display screen 100, so The fingerprint sensor module 40 can receive fingerprint detection signals through the display screen 100 to realize fingerprint recognition.

In another embodiment, please refer to FIG. 5, which is roughly the same as the embodiment shown in FIG. 2, except that the electronic device 200 can control a part of the display screen 100 to be in a bright screen state, so that it is in a bright screen state. The area emits visible light to realize the initial signal of fingerprint detection. Of course, in other embodiments, other fingerprint detection signal sources may also be used to transmit the initial detection signal.

Specifically, after the electronic device 200 detects the fingerprint collection request, the electronic device 200 determines the to-be-lit area and the off-screen area of the display screen 100 according to the pressing area A, wherein the off-screen area At least cover the pressing area A, and the area to be illuminated is located on the peripheral side of the screen-off area; after determining the area to be illuminated and the screen-off area, the electronic device 200 lights up the area to be illuminated Area to form a bright-screen area D, wherein the off-screen area forms the signal transmission area C, the bright-screen area D can emit visible light, and the visible light can be used as the initial detection signal to utilize the initial detection The signal detects the user's fingerprint and realizes fingerprint recognition.

Determining the screen-off area according to the pressing area A may be determining the pressing area A as the screen-off area, or determining the area formed by offsetting the edge of the pressing area A as the screen-off area. As an implementation manner, the screen-off area coincides with the pressing area A. That is, the screen-off area is the area where the user's finger touches the display screen 100 or the user's finger is close to the display screen 100 and formed in the front projection area of the display screen 100. The determination of the area to be illuminated according to the pressing area A may be to determine an area on the display screen 100 other than the pressing area A as the area to be illuminated. As an implementable manner, the area to be lit may be a ring-shaped area enclosed on the periphery of the screen-off area. The to-be-lit area of the display screen 100 is located on the peripheral side of the off-screen area, and after the on-screen area is lit to form the bright-screen area D, the bright-screen area D is located on the peripheral side of the off-screen area That is, the bright screen area D is located on the peripheral side of the area where the user's finger touches the display screen 100, or located on the peripheral side of the area where the user's finger is close to the display screen 100 and formed on the front projection area of the display screen 100. Of course, in other embodiments, determining the screen-off area according to the pressing area A may be an area formed by offsetting the edge of the pressing area A by a preset distance outwards as the screen-off area. The screen area is larger than the pressing area A. The area to be lit may be all areas on the display screen 100 excluding the screen-off area, or may be a non-continuous annular area on the display screen 100 on the periphery of the screen-off area.

It is understandable that the area to be lit is located on the peripheral side of the off-screen area, so that the bright-screen area D can be located at the peripheral side of the area where the user's finger touches the display screen 100, or where the user's finger is close to the display. The screen 100 is also formed on the peripheral side of the front projection area of the display screen 100. The initial detection signal emitted by the bright screen area D can enter the user's finger from the edge area 02 of the user's finger, thereby facilitating the fingerprint sensor module 40 to receive the fingerprint emitted from the user's finger via the display screen 100 Heartbeat.

In another embodiment, after the electronic device 200 detects the fingerprint collection request, the display screen 100 of the electronic device 200 is in a bright screen state in the fingerprint recognition area. The electronic device 200 determines the to-be-extinguished screen area and the bright-screen area D of the display screen 100 according to the pressing area A, wherein the to-be-extinguished screen area at least covers the pressing area A, and the bright-screen area D Located at the periphery of the to-be-extinguished screen area; after determining the to-be-extinguished screen area and the bright-screen area D, the electronic device 200 extinguishes the to-be-extinguished screen area to form a screen-off area, wherein The area forms the signal transmission area C, and the bright screen area D emits an initial detection signal toward the user's fingerprint.

Specifically, determining the area to be extinguished according to the pressing area A may be determining the pressing area A as the area to be extinguished, or determining the area formed by offsetting the edge of the pressing area A as the area to be extinguished. Screen off area. As an implementation manner, the to-be-extinguished screen area coincides with the pressing area A. That is, the area to be turned off is the area where the user's finger touches the display screen 100. The determination of the bright screen area D according to the pressing area A may be to determine an area on the display screen 100 other than the pressing area A as the bright screen area D. As an implementation manner, the bright screen area D may be a ring-shaped area enclosed on the periphery of the to-be-extinguished screen area. The bright screen area D of the display screen 100 is located on the peripheral side of the to-be-extinguished screen area, and after the to-be-extinguished screen area is extinguished to form the off-screen area, the bright-screen area D is located on the peripheral side of the off-screen area, That is, the bright screen area D is located on the peripheral side of the area where the user's finger touches the display screen 100. Of course, in other embodiments, the determination of the screen area to be extinguished according to the pressing area A may be the area formed by offsetting the edge of the pressing area A by a preset distance outward as the screen area to be extinguished, that is, The screen area to be turned off is larger than the pressing area A. The bright screen area D may be all areas on the display screen 100 except for the area to be turned off, or may be a discontinuous ring on the periphery of the area to be turned off on the display screen 100 area.

It is understandable that the bright screen area D is located on the peripheral side of the to-be-extinguished screen area, so that the bright screen area D can be located on the peripheral side of the area where the user's finger touches the display screen 100. The initial detection signal emitted by the bright screen area D can enter the user's finger from the edge area 02 of the user's finger, thereby facilitating the fingerprint sensor module 40 to receive the fingerprint emitted from the user's finger via the display screen 100 Heartbeat.

In another embodiment, if the electronic device 200 detects multiple fingerprint collection requests and determines the pressing area A of the user's multiple fingers, the electronic device 200 determines the display according to the multiple pressing areas A The to-be-lit area and the off-screen area of the screen 100, wherein the off-screen area covers at least the multiple pressing areas A, and the to-be-lit area is located on the periphery of the off-screen area; the electronic device 200 is After determining the to-be-lit area and the screen-off area, light the to-be-lit area to form a bright screen area D, wherein the bright screen area D emits a fingerprint detection signal toward the user's fingerprint.

Specifically, determining the screen-off area according to the plurality of pressing areas A may be calculated according to the coordinate positions of the plurality of pressing areas A on the display screen, and a graphic processing that may include the plurality of pressing areas A Area, and determine the graphics processing area as the off-screen area. That is, the screen-off area is an area that may contain multiple fingers of the user contacting the display screen 100. The determination of the area to be illuminated according to the pressing area A may be to determine an area on the display screen 100 other than the screen-off area as the area to be illuminated. As an implementable manner, the area to be lit may be a ring-shaped area enclosed on the periphery of the screen-off area. The to-be-lit area of the display screen 100 is located on the peripheral side of the off-screen area, and after the on-screen area is lit to form the bright-screen area D, the bright-screen area D is located on the peripheral side of the off-screen area , That is, the bright screen area D is located on the peripheral side of the area where the user's finger touches the display screen 100. The use of the off-screen area can include areas where multiple fingers of the user touch the display screen 100, so that the electronic device 200 only needs to determine one off-screen area and one bright-screen area D, that is, on the display screen 100 Only need to extinguish a position that can contain the contact of multiple fingers of the user, and light up a position that can be enclosed in the contact of multiple fingers of the user to realize the fingerprint image collection of the multiple fingers of the user, and reduce the bright screen of the display 100 Area, and increase the off-screen area of the display screen 100 to achieve energy-saving effects.

Please continue to refer to Figure 1, Figure 2 and Figure 5, the fingerprint processing method includes steps:

104: Receive a fingerprint detection signal through the signal receiving area B. The fingerprint sensor module 40 can collect the specific angle signal a in the fingerprint detection signal and shield the non-specific angle signal b, and form a fingerprint image after processing. The fingerprint detection signal is formed by the environmental signal or/and the initial detection signal emitted by the fingerprint detection signal source after entering the user's finger and exiting through the area where the finger contacts the electronic device, and the specific angle signal is formed by exiting the fingerprint ridge area, The non-specific angle signal is formed by emitting the fingerprint valley area.

In this embodiment, the initial detection signal enters the finger from the edge area 02 and exits through the contact area 01 to form a fingerprint detection signal, and the fingerprint detection signal includes a specific angle signal a and a non-specific angle signal b. It can be understood that the contact area 01 of the user fingerprint has a ridge area 011 and a valley area 012, the ridge area 011 is in contact with the display screen 100, and the valley area 012 is in contact with the air. The initial detection signal is transmitted to the ridge area 011, and after being refracted by the interface between the ridge area 011 and the display screen 100, it is incident into the display screen 100. The initial detection signal is transmitted to the valley area 012, refracted by the interface between the valley area 012 and the air, and then refracted by the interface between the air and the display screen 100, and then incident into the display screen 100. That is, the initial detection signal is incident into the display screen 100 after being refracted once in the ridge area 011 of the fingerprint, and incident into the display screen 100 after being refracted twice in the valley area 012 of the fingerprint, so it is incident on the display screen 100 from the ridge area 011 The fingerprint detection signal inside has certain specific angle signals, while the fingerprint detection signal incident from the valley area 012 to the display screen 100 does not have certain specific angle signals, so that the fingerprint detection signal forms a specific angle corresponding to the fingerprint ridge area Signal a, and a non-specific angle signal b is formed in the valley area of the fingerprint.

In this embodiment, the angle at which the fingerprint detection signal is about to enter the display screen 100 is the same as the angle at which the fingerprint detection signal is emitted from the display screen 100 to ensure that the specific angle signal a can be incident on the display screen at a specific angle. 100, and emit from the display 100 at a specific angle, that is, to ensure that the conduction angle of the specific angle signal a does not change after passing through the display screen 100. Similarly, the conduction angle of the non-specific angle signal b passes through the display screen 100. The display screen 100 will not be changed to facilitate the distinction between the specific angle signal a and the non-specific angle signal b.

Specifically, referring to FIG. 6, the display screen 100 includes a cover plate 10, a display module 20 and a bottom plate 30. The cover plate 10 is a glass cover plate. The front surface 101 is formed on the side of the cover plate 10 away from the display module 20. The bottom plate 30 is a bottom package panel. The back surface 102 is formed on the side of the bottom plate 30 away from the display module 20. The display module 20 can be used as an emission source of the initial detection signal. The display module 20 can emit light as an initial detection signal to enter the user's finger from the edge area 02. The display module 20 of the display screen 100 may also only realize the image display function, and the display screen 100 may also use ambient light to enter the user's finger from the edge area 02 of the user's fingerprint when the screen is off. Utilizing the conduction characteristics of the cover plate 10 to be the same as the conduction characteristics of the bottom plate 30, the conduction angle of the fingerprint detection signal will not change after passing through the display screen 100, that is, the conduction angle of the specific angle signal a is guaranteed The display screen 100 does not change, and the conduction angle of the non-specific angle signal b does not change after the display screen 100 passes. Since the initial detection signal is an optical signal, the refractive index of the cover plate 10 is set to be the same as the refractive index of the bottom plate 30, so as to satisfy that the conduction of the cover plate 10 is the same as that of the bottom plate 30. Claim.

In this embodiment, the fingerprint sensor module 40 receives the specific angle signal a and the non-specific angle signal b. In order to distinguish the specific angle signal a from the non-specific angle signal b, the fingerprint sensor module 40 filters the specific angle signal a to pass through by setting a signal screening device, while shielding the non-specific angle signal b. The fingerprint sensor module 40 only collects the specific angle signal a filtered by the signal screening device, so that the ridge area 011 distribution information of the user's fingerprint can be accurately identified, and then processed to form a fingerprint image to realize fingerprint recognition.

As an embodiment, please refer to FIG. 7. The fingerprint sensor module 40 includes a fingerprint sensor chip 42 and a collimator lens 41 laminated on the fingerprint sensor chip 42. The collimator lens 41 allows only The specific angle signal in the fingerprint detection signal passes through, and then is transmitted to the fingerprint sensor chip 42. Since the fingerprint detection signal is an optical signal, the specific angle transmission channel of light is provided in the collimator lens 41, so that the collimator lens 41 can filter and pass the specific angle signal a, while the non-specific angle signal b is The shielding failed.

The fingerprint sensor chip 42 realizes the sensing of light signals by arranging a plurality of photoelectric sensing elements in an array. The fingerprint sensor chip 42 determines the distribution position of the signal receiving area B according to the pressing area A, so as to collect the specific angle signal a in the signal receiving area B to achieve the effects of energy saving and accurate identification .

The fingerprint sensor chip 42 allows the specific angle signal a to pass through the collimator lens 41 while shielding the non-specific angle signal b, so that only the specific angle signal a is received, and the fingerprint sensor chip 42 According to the distribution information of the specific angle signal a, the pattern of the ridge region 011 of the fingerprint can be processed to form the fingerprint pattern. Since the fingerprint sensor module 40 only collects the specific angle signal a to realize the fingerprint recognition by collecting only the fingerprint ridge area signal, it avoids the traditional method of comparing the fingerprint ridge area signal receiving amount with the fingerprint valley area signal receiving amount Recognize fingerprints, so that when the user’s finger cannot effectively contact the display screen 100 (for example, the user’s fingers are dry and the ridge area of the finger is not in contact with the display screen), as long as there is a specific angle signal a of the fingerprint ridge area through the The display screen 100 can realize fingerprint identification, improve the accuracy of fingerprint identification, and can meet various usage environments.

For example, in the case where the user dries his finger for fingerprint recognition, in the fingerprint processing method of the present application, the signal change amount of the ridge area 011 of the fingerprint is 2%, and the signal change amount of the valley area 012 of the fingerprint is 0% (setting the fingerprint The sensor module 40 shields the non-specific angle signal b, that is, shields the fingerprint valley area signal, resulting in the fingerprint valley area signal variation being always 0%). In the fingerprint processing method of the prior art, the signal reception variation of the ridge area and valley area of the fingerprint are 4% and 3%, respectively. That is to say, in the fingerprint processing method of the present application, when fingerprint recognition is performed facing the user's dry finger, there is a significant difference in the amount of signal reception change between the fingerprint ridge region and the valley region, so that the user's fingerprint can be more effectively identified.

In the case of sun rays, the prior art needs to filter the sun rays, and then collect the ridge area signal and valley area signal of the fingerprint, so as to prevent the sun rays from interfering with the ridge area signal and valley area signal of the fingerprint and affect the fingerprint recognition result. In the fingerprint processing method of the present application, because the sun's rays can be effectively used as the initial signal source, it is avoided that the sun's rays interfere with the fingerprint detection signal collection. In the case of strong sunlight, in the fingerprint processing method of the present application, the signal variation of the fingerprint ridge area 011 and the valley area 012 are 48% and 0%, respectively. In the fingerprint processing method of the prior art, the signal reception variation of the ridge area and valley area of the fingerprint are 44% and 48%, respectively. That is, in the fingerprint processing method of the present application, when the user's finger is subjected to fingerprint recognition under the sunlight, there is a significant difference in the signal reception variation between the fingerprint ridge area and the valley area, so that the user's fingerprint can be more effectively identified.

Referring to FIG. 8, this application also provides an electronic device 200 that can use the above-mentioned fingerprint processing method to identify fingerprints. The electronic device 200 includes a display screen 100 and a fingerprint sensor module 40. The display screen 100 has a front side 101 facing the user and a back side 102 opposite to the front side 101. The fingerprint sensor module 40 is fixed to the On the back of the display screen 100, the fingerprint sensor module 40 is used to receive the fingerprint detection signal emitted by the user's fingerprint, can collect the specific angle signal in the fingerprint detection signal and shield the non-specific angle signal, and form a fingerprint image after processing. The fingerprint detection signal is formed by the environmental signal or/and the initial detection signal emitted by the fingerprint detection signal source after entering the user's finger and exiting through the area where the finger contacts the electronic device, and the specific angle signal is emitted from the fingerprint ridge area. Formed, the non-specific angle signal is formed by emitting the fingerprint valley area.

The display screen 100 includes a cover plate 10, a display module 20 and a bottom plate 30 which are attached in sequence. The cover plate 10 conducts fingerprint detection signals and transmits them to the bottom plate 30 through the display module 20. The bottom plate 30 is used to emit fingerprint detection signals to the fingerprint sensor module 40. The signal conduction characteristics of the cover plate 10 are the same as the signal conduction characteristics of the bottom plate 30, so as to ensure that the conduction angle incident on the display screen 100 is consistent with the conduction angle after exiting the display screen 100, thereby facilitating Collect the specific angle signal a in the fingerprint detection signal to effectively and accurately identify the ridge area distribution information of the fingerprint.

It is understandable that the display screen 100 can be applied to an electronic device, which can be a mobile phone, a tablet computer, or a notebook computer. A fingerprint sensor module 40 is provided on the side of the bottom plate 30 of the display screen 100 away from the display module 20. The fingerprint sensor module 40 can be used to collect only a specific angle signal in the fingerprint detection signal to identify user fingerprint information.

In this embodiment, the cover plate 10 is composed of a glass plate 12 and an ink layer 13 coated on the glass plate 12. The ink layer 13 is coated on the edge of the glass plate 12. The surface of the glass plate 12 coated with the ink layer 13 faces the display module 20. The ink layer 13 forms the non-transparent part of the cover plate 10 in the area where the glass plate 12 is located. The area of the glass plate 12 that is not covered by the ink layer 13 constitutes the transparent portion of the cover plate 10. The light-transmitting part of the glass plate 12 can be opposite to the fingerprint sensor module 40 to facilitate the fingerprint sensor module 40 to receive fingerprint detection signals through the light-transmitting part of the glass plate 12. The glass plate 12 can also be integrated with a touch layer 121 to facilitate the use of the touch layer 121 to sense the pressing area A of the user’s fingerprint, and to determine the position and size of the signal receiving area according to the position and size of the pressing area A. To facilitate the collection of fingerprint detection signals in the signal receiving area. The signal receiving area is an area on the fingerprint sensor module 40 that can collect a specific angle signal in the fingerprint detection signal. Of course, in other embodiments, an ultrasonic transmitter may also be used to transmit ultrasonic signals to the user's fingerprint. The cover plate 10 and the bottom plate 30 may be ultra-dense media that conduct ultrasonic waves, and the fingerprint sensor module 40 may pass ultrasonic waves. Signals identify user fingerprint information, or use infrared light sources to transmit infrared light signals to user fingerprints. The cover plate 10 and the bottom plate 30 may also be light guide media that conduct infrared light. The fingerprint sensor module 40 can pass infrared light. Identify user fingerprint information.

In this embodiment, the display module 20 has a display area 21 and a non-display area 22 connected to the display area 21. The display area 21 is substantially aligned with the area of the glass plate 12 not covered by the ink layer 13. The non-display area 22 is substantially blocked by the ink layer 13. The display module 20 can emit visible light in the display area 21 to provide a display screen, and can also use visible light to form a fingerprint detection signal for detecting a user's fingerprint. Of course, the visible light in the ambient light can also be used to form the initial detection signal for detecting the user's fingerprint. The display module 20 can form a lighting area that can emit visible light in the display area 21 according to the pressing area A of the user's fingerprint.

In an implementable way, in the off-screen state, the display module 20 is lit up in a partial area surrounding the pressing area A, and the area directly opposite to the pressing area A is left off. State to form the light-up area D. In a possible implementation manner, in the on-screen state, the area directly opposite to the pressing area A of the display module 20 is extinguished, and the area enclosed by the pressing area A is left in the lighted state. form.

In this embodiment, the bottom plate 30 is substantially parallel to the cover plate 10. The bottom plate 30 is a glass plate, so that the refractive index of the bottom plate 30 is the same as the refractive index of the cover plate 10. The bottom plate 30 may coincide with a part of the light-transmitting area of the cover plate 10, so that the display screen 100 has a fingerprint detection signal transmission function only in the area opposite to the bottom plate 30, and passes through the fingerprint sensor module. The group 40 only realizes fingerprint collection in the area opposite to the bottom plate 30.

The bottom plate 30 may also be completely overlapped with the light-transmitting area of the cover plate 10, so that the display screen 100 has a fingerprint detection signal transmission function in the whole area of the display area 21, and passes through a fingerprint sensor module 40 can collect a specific angle signal in the fingerprint detection signal at any position in the entire area of the display area 21.

In one embodiment, referring to FIG. 9, the display module 20 includes a cathode layer 23, an organic electroluminescence layer 24, and an anode layer 25 that are attached in sequence, and the cathode layer 23 is attached to the cover plate 10. . The bottom plate 30 is attached to the anode layer 25. The bottom plate 30 can be used as a substrate of the display module 20 to facilitate the formation of the anode layer 25 on the bottom plate 30. The organic electroluminescent layer 24 may form a signal conduction area in an area directly opposite to the second conduction portion 31, and form a locally lit light emitting area around the signal conduction area. When the user touches the front side 101 of the display screen 100, the touch layer 121 can determine the pressing area A of the user's fingerprint. According to the pressing area A, the organic electroluminescent layer 24 may form a blackout area in an area directly opposite to the pressing area A. The screen-off area can be transmitted through the fingerprint detection signal emitted from the cover plate. The screen-off area conducts fingerprint detection signals to the bottom plate 30. After the touch layer 121 detects the pressing area A, the organic electroluminescent layer 24 can form a ring-shaped lighting area surrounding the screen-off area according to the pressing area A. The ring-shaped illuminated area can emit fingerprint detection light to the edge area 02 of the user's fingerprint. The fingerprint detection light passes through the cover 10 and enters the user's fingerprint. After exiting through the ridge area 011 and the valley area 012, a fingerprint detection signal is formed . The fingerprint detection signal sequentially passes through the cover plate 10, the off-screen area of the display module 20 and the bottom plate 30 to the fingerprint sensor module 40, and finally realizes the identification of the user's fingerprint image. Of course, in other embodiments, the organic electroluminescent layer 24 may also form a plurality of bright spot areas surrounded by equidistant intervals on the peripheral side of the screen-out area according to the pressing area A, using a plurality of equidistant intervals. The arranged illuminated areas emit fingerprint detection light to the user's fingerprint.

In another embodiment, referring to FIG. 10, the display module 20 includes a substrate 25 attached to the anode layer 25 away from the organic electroluminescent layer 24, and the bottom plate 30 is attached to the substrate 25 is away from the side of the anode layer 25. The bottom plate 30 is separated from the substrate 25 so that the bottom plate 30 can face a part of the display area of the display module 20, thereby reducing the manufacturing cost of the bottom plate 30.

In another embodiment, referring to FIG. 11, the display module 20 includes a liquid crystal assembly 50 and a backlight assembly 60, and the liquid crystal assembly 50 is attached to the cover plate 10. The backlight assembly 60 is attached to the liquid crystal assembly 50, and the backlight assembly 60 is provided with a hollow portion 61. The bottom plate 30 is attached to the backlight assembly 60. The fingerprint sensor module 40 is directly opposite to the hollow part 61. The liquid crystal assembly 50 includes an upper polarizer 51, a color filter 52, a liquid crystal layer 53, an electrode array layer 54 and a lower polarizer 55 which are sequentially bonded together. The upper polarizer 51 is attached to the cover plate 10. The backlight assembly 60 includes a light guide plate 62 attached to the lower polarizer 55, a backlight plate 63 attached to the side of the light guide plate 62 away from the liquid crystal assembly 50, and a light guide plate 63 fixed to the edge of the light guide plate 62 Light source 64. The light source 64 can light up the light guide plate 62, and the hollow part 61 is disposed on the backlight plate 63. When a user's fingerprint is against the cover plate 10 and is away from the display module 20. The pressing area A of the user's fingerprint can be determined through the touch layer 121. The electrode array layer 54 can drive the liquid crystal layer 53 in an area directly opposite to the pressing area A according to the pressing area A to form a blackout area. The screen extinguishing area is directly opposite to the hollow part 61, so that the screen extinguishing area and the hollow part 61 can pass through the fingerprint detection signal emitted from the cover plate 10. The screen-off area conducts fingerprint detection signals to the bottom plate 30. When the touch layer 121 detects the pressing area A, the electrode array layer 54 may form a ring-shaped lighting area surrounding the screen-off area according to the pressing area A. The ring-shaped lighting area combines the upper polarizer 51, the lower polarizer 55, the light guide plate 62 and the backlight plate 63 to form an aperture that can emit light, and the aperture can emit fingerprint detection light to the edge area 02 of the user's finger The fingerprint detection light passes through the cover plate 10, and is incident on the user's finger, and after the ridge area 011 and valley area 012 of the fingerprint is emitted to form a fingerprint detection signal, it is incident on the cover plate 10. The fingerprint detection signal is transmitted to the fingerprint sensor module 40 through the cover plate 10, the off-screen area of the display module 20 and the bottom plate 30 in sequence, and finally realizes the identification of the user's fingerprint image.

In this embodiment, the display module 20 of the display screen 100 serves as the fingerprint detection signal source of the fingerprint sensor module 40. The display module 20 can emit fingerprint detection light at the edge of the user's fingerprint to facilitate the fingerprint detection signal to enter the user's finger, and make the fingerprint detection signal pass through the ridge area and form a specific angle signal to enter the cover plate 10, and the fingerprint In the valley area, the detection signal cannot form a specific angle signal to identify the user's fingerprint light. The display module 20 of the display screen 100 may also only realize the image display function, and the display screen 100 may also use external light to enter the user's finger from the edge of the user's fingerprint when the screen is turned off to realize fingerprint identification.

In this embodiment, the fingerprint sensor module 40 includes a collimator lens 41 and a fingerprint sensor chip 42. The collimator 41 is used to allow the specific angle signal in the fingerprint detection signal to pass through but shield the non-specific angle signal, so that the fingerprint sensor chip 42 can collect the fingerprint ridge area 011 information. The fingerprint sensor chip 42 is fixed on the side of the collimator lens 41 away from the bottom plate 30. The collimator lens 41 completely covers the sensing area of the fingerprint sensor chip 42. The collimator lens 41 may be attached to the bottom plate 30 or may be spaced from the bottom plate 30. The collimator lens 41 and the fingerprint sensor chip 42 may be attached to each other, or there may be a distance between the collimator lens 41 and the fingerprint sensor chip 42.

In another embodiment, referring to FIG. 12, the electronic device 200 further includes a fingerprint detection signal source 70 fixed on the side of the display screen 100, and the fingerprint detection signal source 70 can face the edge area of the user's finger. The initial detection signal is emitted so that the initial detection signal enters the cover plate 10 through the contact area 01 of the finger to form a fingerprint detection signal. The fingerprint detection signal source 70 can emit an ultrasonic signal, an infrared light signal, an electromagnetic signal, or the like. The fingerprint detection signal source 70 may be located on the side of the display screen 100. Using the fingerprint detection signal source 70 to transmit the initial detection signal can improve the stability of the initial detection signal and avoid using the display module 20 of the display screen 100 to provide the initial detection signal, thereby increasing the service life of the display screen 100.

In this embodiment, referring to FIG. 13, the electronic device 200 further includes a back shell 80 and a main board 90 that cover the display screen 100, and the fingerprint sensor module 40 and the main board 90 are fixed to the Between the back shell 80 and the display screen 100. The fingerprint sensor module 40 is electrically connected to the main board 90. The main board 90 receives a specific angle signal in the fingerprint detection signal collected by the fingerprint sensor module 40, and processes it to form a fingerprint image. The main board 90 is also electrically connected to the display screen 100 to control the display screen 100 to display images, and to control some areas of the display screen 100 to turn off and some areas to light up.

An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any method as recorded in the above method embodiment , The aforementioned computer may be an electronic device.

The embodiments of the present application also provide a computer program product. The above-mentioned computer program product includes a non-transitory computer-readable storage medium storing a computer program. The above-mentioned computer program is operable to cause a computer to execute any of the methods described in the above-mentioned method embodiments. Part or all of the steps of the method. The computer program product may be a software installation package, and the computer may be an electronic device.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited by the described sequence of actions. Because according to this application, some steps can be performed in other order or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the above-mentioned units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated. To another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable memory. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, A number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the foregoing methods of the various embodiments of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other various media that can store program codes.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable memory, and the memory can include: flash disk , Read-only memory (English: Read-Only Memory, abbreviation: ROM), random access device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disc, etc.

The embodiments of the application are described in detail above, and specific examples are used in this article to illustrate the principles and implementation of the application. The descriptions of the above examples are only used to help understand the methods and core ideas of the application; A person of ordinary skill in the art, based on the idea of the present application, will have changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation of the present application.

In summary, although this application has been disclosed as above in a preferred embodiment, the preferred embodiment is not intended to limit the application. Those of ordinary skill in the art can do anything without departing from the spirit and scope of the application. Various changes and modifications have been made, so the protection scope of this application is subject to the scope defined by the claims.

The above are the preferred embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of this application, several improvements and modifications can be made, and these improvements and modifications are also considered The protection scope of this application.

Claims

A fingerprint processing method, characterized in that it is applied to an electronic device, the electronic device includes a fingerprint sensor module, and the fingerprint processing method includes:

When a fingerprint collection request is detected, determine the pressing area of the user's finger;

Determining the signal receiving area of the fingerprint sensor module according to the pressing area;

The fingerprint detection signal is received through the signal receiving area, the fingerprint sensor module can collect the specific angle signal in the fingerprint detection signal and shield the non-specific angle signal, and form a fingerprint image after processing, wherein the fingerprint detection signal is determined by the environment The signal or/and the initial detection signal emitted by the fingerprint detection signal source enters the user's finger and exits through the area where the finger contacts the electronic device. The specific angle signal is formed by the fingerprint ridge area. The non-specific angle signal It is formed from the fingerprint valley area.
The fingerprint processing method according to claim 1, wherein the electronic device further comprises a display screen, the fingerprint sensor module is stacked on one side of the display screen, and the display screen includes a cover plate and an opposite surface. The signal conduction characteristic of the cover plate is the same as the signal conduction characteristic of the base plate, so that the angle at which the specific angle signal is about to enter the cover plate is the same as the angle at which the signal exits from the base plate.
The fingerprint processing method according to claim 2, wherein the fingerprint detection signal is an optical signal, and the refractive index of the cover plate is the same as the refractive index of the bottom plate.
The fingerprint processing method according to claim 3, wherein the fingerprint sensor module comprises a fingerprint sensor chip and a collimator mirror laminated on the fingerprint sensor chip, and the collimator lens only allows the The specific angle signal in the fingerprint detection signal passes through and then is transmitted to the fingerprint sensor chip.
The fingerprint processing method according to claim 3, characterized in that, before the step of receiving a fingerprint detection signal through the signal receiving area, the display screen is in a full-screen state, and the user's finger is in a touched part of the display screen. Receive ambient light around.
The fingerprint processing method according to claim 3, wherein before the step of receiving a fingerprint detection signal through the signal receiving area, the screen-off area of the display screen is determined according to the pressing area, and the screen-off area At least cover the pressing area, and the screen-off area can transmit the fingerprint detection signal.
The fingerprint processing method according to claim 6, wherein the step of determining the screen-off area of the display screen according to the pressing area comprises:

Determining the to-be-lit area and the off-screen area of the display screen according to the pressing area, wherein the to-be-lit area is located on the peripheral side of the off-screen area;

The area to be illuminated is illuminated to form a bright screen area that can emit detection light toward the user's finger. The light emitted from the bright screen area enters the finger from the periphery of the display screen part when the finger touches, and then is emitted by the fingerprint to form a fingerprint Check the light.
The fingerprint processing method according to claim 6, wherein the step of determining the screen-off area of the display screen according to the pressing area comprises:

Determining a to-be-extinguished screen area and a bright-screen area of the display screen according to the pressing area, wherein the to-be-extinguished screen area covers at least the pressing area, and the bright-screen area is located on the periphery of the to-be-extinguished screen area;

The area to be extinguished is extinguished to form a extinguished area, and the light emitted from the bright-screen area enters the finger from the periphery of the display screen portion when the finger touches, and then is emitted by the fingerprint to form fingerprint detection light.
An electronic device, wherein the electronic device comprises a display screen and a fingerprint sensor module, the display screen has a front facing the user and a back opposite to the front face, and the fingerprint sensor module is fixed on On the back of the display screen, the fingerprint sensor module is used to receive the fingerprint detection signal emitted by the user's fingerprint, can collect the specific angle signal in the fingerprint detection signal and shield the non-specific angle signal, and form a fingerprint image after processing. The fingerprint detection signal is formed by the environmental signal or/and the initial detection signal emitted by the fingerprint detection signal source after entering the user's finger and exiting through the area where the finger contacts the electronic device, and the specific angle signal is formed by exiting the fingerprint ridge area The non-specific angle signal is formed by the fingerprint valley area.
The electronic device according to claim 9, wherein the display screen comprises a cover plate and a bottom plate disposed opposite to the cover plate, and the signal conduction characteristics of the cover plate are the same as those of the bottom plate. The angle at which the specific angle signal is about to enter the cover plate is the same as the angle at which the signal exits from the bottom plate.
The electronic device of claim 10, wherein the fingerprint sensor module is a light sensor module, the fingerprint detection signal is an optical signal, and the refractive index of the cover plate is the same as the refractive index of the bottom plate. the same.
The electronic device according to claim 11, wherein the fingerprint sensor module comprises a signal screening device and a fingerprint sensor chip, and the signal screening device is fixed on a side of the bottom plate away from the cover plate, and To allow only the specific angle signal to pass through, the fingerprint sensor chip is fixed on the side of the signal screening device away from the bottom plate to collect the specific angle signal.
The electronic device according to claim 12, wherein the signal screening device is a collimating mirror.
The electronic device according to any one of claims 9-13, wherein the display screen can form a screen-off area in an area directly opposite to the fingerprint sensor module, and surrounds the screen-off area A light-emitting area is formed to use the light-emitting area to emit light to the user's finger.
The electronic device according to any one of claims 9-13, wherein the display screen is in a fully-off state, and the fingerprint detection signal is incident from ambient light through the vicinity of the contact part of the user's finger with the display screen. To the inside of the finger, and formed by emitting from the contact part of the finger with the display screen.
The electronic device according to any one of claims 9-13, wherein the electronic device further comprises a fingerprint detection signal source, and the fingerprint detection signal source is fixed on the peripheral side of the display screen to inform the user The finger emits an initial detection signal.
The electronic device according to any one of claims 9-13, wherein the fingerprint sensor module and the display screen completely overlap.
The electronic device according to any one of claims 9 to 13, wherein the display screen is provided with a touch layer, and the touch layer is used to sense a pressing area where a user's fingerprint contacts the display screen, and The fingerprint sensing module may determine a signal receiving area according to the pressing area, so that the signal receiving area receives the fingerprint detection signal.
The electronic device according to any one of claims 10 to 13, wherein the display screen further comprises a liquid crystal assembly and a backlight assembly, the liquid crystal assembly is attached to the cover plate, and the backlight assembly is attached to In the liquid crystal assembly, the bottom plate is attached to the backlight assembly, the backlight assembly is provided with a hollow part, and the fingerprint sensor module is directly opposite to the hollow part.
The electronic device according to any one of claims 10-13, wherein the display screen further comprises a cathode layer, an organic electroluminescence layer and an anode layer which are attached in sequence, and the cathode layer is attached to the The cover plate is attached to the anode layer.