WO2019140624A1

WO2019140624A1 - Electronic device

Info

Publication number: WO2019140624A1
Application number: PCT/CN2018/073353
Authority: WO
Inventors: 李问杰
Original assignee: 深圳信炜生物识别科技有限公司
Priority date: 2018-01-19
Filing date: 2018-01-19
Publication date: 2019-07-25
Also published as: CN209281431U

Abstract

An electronic device, comprising: a light source (410) for emitting a light signal; a light ray sensor (420) for obtaining the intensity of the current ambient light (S110); a biometric information sensing apparatus (430), comprising a plurality of sensing units (431), the sensing units (431) being used for performing a sensing operation to sense biometric information of a target object approaching or touching the biometric information sensing apparatus (430); and a controller (440) for controlling the light ray sensor (420) to obtain the intensity of the current ambient light when biometric information sensing is performed, closing the light source (410) when the intensity of the current ambient light is greater than or equal to a preset first intensity threshold, and controlling the biometric information sensing apparatus (430) to perform a sensing operation (S112).

Description

Electronic equipment

Technical field

The present application relates to an electronic device that implements biometric information sensing.

Background technique

At present, biometric identification such as fingerprints has gradually become a standard component of electronic products such as mobile terminals. Because optical fingerprint recognition has stronger penetrating ability than capacitive fingerprint recognition, the application of optical fingerprint recognition to mobile terminals is a future development trend, but the sensing effect of current optical fingerprint recognition needs to be improved.

Application content

The embodiments of the present application aim to at least solve one of the technical problems existing in the prior art. To this end, embodiments of the present application need to provide an electronic device that implements biometric information sensing.

An electronic device provided by an embodiment of the present application includes:

a light source for emitting an optical signal;

a light sensor for obtaining the intensity of the current ambient light;

a biometric information sensing device comprising a plurality of sensing units for performing a sensing operation to perform sensing of biometric information on a target object approaching or touching the sensing device;

a controller, configured to control the light sensor to obtain the intensity of the current ambient light when performing the sensing of the biometric information, and turn off the light source when the intensity of the current ambient light is greater than or equal to a preset first intensity threshold, And controlling the biometric information sensing device to perform a sensing operation.

In some embodiments, when the intensity of the current ambient light is less than the first intensity threshold, the light source is controlled to be turned on, and the biometric information sensing device is controlled to perform a sensing operation.

The embodiment of the present application first acquires the intensity of the current ambient light before performing the biometric information sensing, and turns off the light source when the current ambient light is too strong, so that the sensing device utilizes the ambient light that penetrates the target object, and the proximity or touch sense is used. The target object of the measuring device performs sensing of the biometric information; otherwise, the light source is turned on, so that the sensing device utilizes the light signal of the light source to perform sensing of the biometric information on the target object approaching or touching the sensing device. In this way, the sensing of the biometric information can be performed both indoors and outdoors, and the sensing accuracy of the biometric information is improved.

In some embodiments, the controller is further configured to: correspondingly adjust an optical signal strength emitted by the light source according to a current ambient light intensity. In this way, the sensing of the sensing device can be realized, and the power is saved.

In some embodiments, the electronic device includes a display panel, and the controller is further configured to: when the intensity of the current ambient light is less than the first intensity threshold, control the display panel to illuminate The display panel emits an optical signal as the light source. The display panel is used as a light source for sensing biometric information, thereby saving the cost of additionally setting the light source.

In some embodiments, the biometric information sensing device is located above the display panel or below the display panel; or the biometric information sensing device is integrated within the display panel.

In some embodiments, the biometric information sensing device includes a sensing region formed by a plurality of sensing units; the display panel includes a display region formed by a plurality of display pixels, and the sensing region Greater than, equal to, or less than the display area.

In some embodiments, the display panel includes a plurality of display pixels; the controller is further configured to: determine a contact area of the target object, and control display pixels in the display panel corresponding to the contact area Light up. Through the determination of the contact area, the sensing of the biometric information is realized, and all the display units are prevented from being lit, thereby saving power. In addition, by illuminating only the display unit corresponding to the contact area, the optical signal emitted by other display units is prevented from interfering with the sensing of the biometric information, thereby improving the sensing accuracy of the biometric information.

In some embodiments, the display panel is a liquid crystal display, an OLED display.

In some embodiments, the light source includes a plurality of light emitting elements; the controller is further configured to: when the intensity of the current ambient light is less than the first intensity threshold, control the plurality of light emitting elements to light . Through the selection of the light source, not only the sensing of the biometric information can be realized, but also the living body detection of the target object can be realized, thereby improving the safety of the biometric recognition.

In some embodiments, the controller is further configured to: determine a contact area of the target object, and control a sensing unit corresponding to the contact area to perform sensing of the biometric information. In this way, not only the sensing of the biometric information of the target object is achieved, but also all the sensing units are operated, thereby reducing the sensing power consumption and speeding up the sensing speed.

In some embodiments, the sensing unit is further configured to act as the light sensor to obtain an intensity of current ambient light. In the embodiment of the present application, the sensing unit is configured to sense the current ambient light by using the sensing characteristic of the sensing unit, and obtain the intensity of the current ambient light according to the sensing signal. By using the sensing device to sense the ambient light intensity, the cost of additional light sensors is saved.

In some embodiments, the biometric information sensing device further includes a processing unit, configured to process the sensing signals output by the plurality of sensing units, and obtain biometric information of the target object .

In some embodiments, the biometric information sensing device is integrated in one sensing chip; or the sensing unit and the processing unit in the biometric information sensing device are integrated in at least two chips.

In some embodiments, the biometric information sensing device includes any one or more of a fingerprint sensing module, a pulse sensing module, a blood oxygen sensing module, and a heartbeat sensing module.

The additional aspects and advantages of the embodiments of the present application will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the embodiments of the present application will become apparent and readily understood from

1 is a schematic diagram of an optical biometric information sensing structure applied to an electronic device in the prior art;

2 is a schematic flow chart of a method for sensing biometric information according to an embodiment of the present application;

3 is a schematic structural diagram of turning off a light source for sensing when the electronic device of the present application performs biometric information sensing;

4 is a schematic front structural view of an electronic device according to an embodiment of the present application;

5 is a schematic flow chart of a method for sensing biometric information according to another embodiment of the present application;

6 is a schematic structural diagram of a biometric information sensing device according to an embodiment of the present application;

7 is a schematic structural diagram of a biometric information sensing device according to another embodiment of the present application;

8 is a schematic diagram of functional modules of an electronic device according to an embodiment of the present application;

9 is a schematic structural diagram of a biometric information sensing device and a display panel in an electronic device according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a biometric information sensing device and a display panel in an electronic device according to another embodiment of the present application.

Detailed ways

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative, and are not to be construed as limiting.

In the description of the present application, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise. “Contact” or “touch” includes direct or indirect contact. For example, the sensing device disclosed hereinafter may be directly in contact with the user's finger if it is disposed in the housing hole of the electronic device, but if it is disposed inside the electronic device, such as a protective cover Below, the user's finger indirectly contacts the sensing device through the protective cover.

In the description of the present application, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; may be mechanically connected, or may be electrically connected or may communicate with each other; may be directly connected or indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

The following disclosure provides many different embodiments or examples for implementing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of the specific examples are described below. Of course, they are merely examples and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or settings discussed. Moreover, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

Further, the described features, structures may be combined in one or more embodiments in any suitable manner. In the following description, numerous specific details are set forth However, those skilled in the art should appreciate that the technical solution of the present application can be practiced without one or more of the specific details, or other structures, components, and the like. In other instances, well-known structures or operations are not shown or described in detail to avoid obscuring the application.

An existing optical biometric identification device is exemplified by a fingerprint recognition device. Referring to FIG. 1 , the fingerprint identification device includes a substrate 101 and a plurality of sensing units 102 and a light source 103 disposed on the substrate 101. A cover plate 104 is further disposed above the sensing unit 102 and the light source 103. When the finger 200 approaches or touches the cover plate 104, the light signal emitted by the light source 103 reaches the finger 200, and the light signal reflected back from the surface of the finger 200 can be sensed by the sensing unit 102, since the surface texture of the finger 200 includes valleys and ridges, Moreover, the degree of reflection of the valley and the ridge with respect to the optical signal is different, and therefore the fingerprint image of the finger 200 can be formed according to the sensing signal of the sensing unit 102.

The optical fingerprint recognition device has strong penetrating ability with respect to the capacitive fingerprint recognition device, and can be applied to an electronic device, especially under the screen of an electronic device or even in a screen. However, the optical fingerprint recognition device cannot be applied to a place with strong light, such as an outdoor environment with strong sunlight. Since the outdoor ambient light is strong, the light will penetrate the finger 200 and be sensed by the sensing unit 102. Thereby affecting the normal sensing of the sensing unit 102, thereby affecting the sensing accuracy of the optical fingerprinting device. Therefore, the present application proposes a new sensing method, which can be applied not only to the sensing of biometric information in a strong light environment, but also to improving the sensing accuracy of biometric information.

Referring to FIG. 2, an embodiment of the present application provides a biometric information sensing method for an electronic device, where the sensing method includes the following steps:

Step S110: Acquire an intensity of current ambient light when performing sensing of biometric information;

Step S111, determining whether the current ambient light intensity is greater than or equal to a preset first intensity threshold; if yes, executing step S112, if otherwise, performing step S113;

Step S112, when the intensity of the current ambient light is greater than or equal to a preset first intensity threshold, turning off the light source, and the sensing device uses ambient light to perform a target object that approaches or touches the sensing device. Sensing of biometric information;

Step S113: Turn on a light source when the intensity of the current ambient light is less than a preset first intensity threshold, and the sensing device uses a light signal emitted by the light source to perform biological work on a target object that approaches or touches the sensing device. Sensing of feature information.

The electronic device includes a light source and a sensing device for sensing the biometric information of the target object approaching or touching the sensing device. Specifically, the biometric information is, for example but not limited to, skin texture information such as fingerprints, palm prints, ear prints, and soles, and other biometric information such as heart rate, blood oxygen concentration, and veins. The target object, such as but not limited to a human body, may also be other suitable types of objects. The light source can be a light source that is included in the sensing device. If the electronic device has a display panel, the display panel can also be controlled to illuminate, and the light signal is emitted as a light source, thereby saving the cost of additionally setting the light source.

Taking the target object as a finger as an example, when the finger approaches or touches the sensing device, if there is ambient light on the finger, and the finger has many tissue structures, such as epidermis, bones, meat, blood vessels, etc., the part in the ambient light The light signal will penetrate the finger and some of the light signal will be absorbed by the finger. If the intensity of the ambient light is stronger, the intensity of the light signal penetrating the finger is stronger, and the applicant also found in the study that when the intensity of the ambient light reaches a certain level, according to the ambient light that penetrates the finger, The sensing signal can also form a fingerprint image of the finger. The first intensity threshold is a critical value that reaches a certain level.

When the target object is placed on the sensing device, the sensing device activates and begins performing sensing of the biometric information. Before the sensing device starts performing the sensing of the biometric information, the intensity of the current ambient light is acquired, thereby controlling the opening or closing of the light source according to the intensity of the current ambient light, so that the sensing device utilizes different optical signals for biometrics. Sensing of information.

In the embodiment of the present application, the specific value of the first intensity threshold is set in advance. When it is determined that the intensity of the current ambient light is greater than or equal to the first intensity threshold, the light source is turned off, so that the sensing device utilizes the ambient light to perform sensing of the biometric information on the target object approaching or touching the sensing device. Specifically, referring to FIG. 3, when the finger approaches or touches the sensing device, the light source is turned off because the ambient light intensity exceeds the first intensity threshold. The sensing device senses an optical signal that the ambient light penetrates the finger, and forms a fingerprint image of the finger according to the sensing signal.

When it is determined that the intensity of the current ambient light is less than the first intensity threshold, the light source is turned on, so that the sensing device utilizes the light signal emitted by the light source to perform sensing of the biometric information on the target object approaching or touching the sensing device. As shown in FIG. 1, when a finger approaches or touches the sensing device, the light source emits an optical signal and reaches the finger, and the optical signal reflected by the surface of the finger is sensed by the sensing device, and the finger is formed according to the sensed signal. Fingerprint image.

The embodiment of the present application first acquires the intensity of the current ambient light before performing the biometric information sensing, and turns off the light source when the current ambient light is too strong, so that the sensing device utilizes the ambient light that penetrates the target object, and the proximity or touch sense is used. The target object of the measuring device performs sensing of the biometric information; otherwise, the light source is turned on, so that the sensing device utilizes the light signal of the light source to perform sensing of the biometric information on the target object approaching or touching the sensing device. In this way, the sensing of the biometric information can be performed both indoors and outdoors, and the sensing accuracy of the biometric information is also improved.

When the sensing device uses the optical signal of the light source to perform the sensing of the biometric information, in order to prevent the ambient light that penetrates the finger from affecting the sensing of the sensing device, in the embodiment of the present application, step S113 further includes: according to the current The intensity of the ambient light corresponds to the intensity of the light signal emitted by the light source. Specifically, the stronger the current ambient light intensity is, the greater the intensity of the light signal emitted by the light source is; the weaker the current ambient light intensity is, the less the intensity of the light signal emitted by the light source is reduced. When the ambient light is strong, the light signal that penetrates the finger is relatively strong. Therefore, the intensity of the light signal emitted by the light source is increased, so that the light signal reflected by the surface of the finger is relatively strong, and the ambient light can be reduced to some extent. influences. When the ambient light is weak, the light signal penetrating the finger is relatively weak, so that the sensing of the sensing device is not substantially affected, thereby weakening the intensity of the light signal emitted by the light source, and the sensing device can be sensed. And saved electricity.

In some embodiments, the light source includes a plurality of light emitting elements, and the step S113 further includes: controlling the plurality of light emitting elements to illuminate when the intensity of the current ambient light is less than the first intensity threshold. The illuminating element is used to emit light of a single color, such as white light, blue light, green light, ultraviolet light, infrared light, or the like. Due to the selection of the light source, not only the sensing of the biometric information can be realized, but also the living body detection of the target object can be realized, thereby improving the safety of the biometric recognition.

In some embodiments, the electronic device further includes a display screen, and the display screen includes a plurality of display units. Step S113 further includes: when the intensity of the current ambient light is less than the first intensity threshold, determining a contact area of the target object, and controlling a plurality of display units corresponding to the contact area to illuminate. Specifically, the display screen includes a plurality of display units, and the light signal is emitted when the display screen is lit. Therefore, when the intensity of the current ambient light is less than the first intensity threshold, the display screen is controlled to be illuminated, so that the sensing device utilizes the The light signal emitted by the display screen is used to sense the biometric information. Further, when the display screen is illuminated, the contact area of the target object may be determined first, and then the plurality of display units corresponding to the contact area are controlled to be lit. Therefore, by the determination of the contact area, the sensing of the biometric information is realized, and the lighting of all the display units is avoided, thereby saving power.

In some embodiments, the step S113 further includes: controlling a plurality of display units corresponding to the contact area to emit optical signals of the same wavelength band, that is, the plurality of display units emit optical signals of the same color, such as white light, blue light, and green. Light, etc. By controlling a plurality of display units to emit optical signals of the same frequency band, each sensing unit in the sensing device can sense the same optical signal, thereby improving the sensing effect of the sensing device.

In some embodiments, the sensing device includes a plurality of sensing units, and the sensing device is applied to biometric identification of a target object within a screen of the electronic device, when controlling the sensing device to perform sensing of the biometric information By scanning all the sensing units, the sensing unit is driven to perform light sensing one by one, and the biometric information of the target object is formed according to the sensing signals obtained by all the sensing units. Of course, since the contact area of the target object is smaller than the size of the display area, when the sensing device performs the sensing of the biometric information, the contact area of the target object may be determined first, and the sensing unit corresponding to the contact area may be controlled. The sensing of biometric information is performed. In this way, not only the sensing of the biometric information of the target object is achieved, but also all the sensing units are prevented from performing the light sensing, thereby reducing the sensing power consumption and also speeding up the sensing speed.

In some embodiments, step S110 includes: acquiring the intensity of the current ambient light using the sensing device when performing the sensing of the biometric information; or acquiring the intensity of the current ambient light using the light sensor disposed on the electronic device. Specifically, since the sensing device includes a plurality of sensing units, the optical signals are sensed by the plurality of sensing units, and the sensing signals are obtained. Therefore, in the embodiment of the present application, the sensing unit senses the current ambient light by using the sensing characteristic of the sensing unit, and obtains the intensity of the current ambient light according to the sensing signal. By using the sensing device to sense the ambient light intensity, the cost of additional light sensors is saved.

In addition, a light sensor can also be provided on the electronic device for collecting the intensity of the current ambient light. For example, current electronic devices such as mobile phones, PDAs, and tablets all have corresponding light sensors. Referring to FIG. 4, the electronic device 1 is a mobile phone, and the front side of the mobile phone is a display screen 11, and the upper end of the mobile phone is provided with components such as a front camera 12, a light sensor 13, and an earpiece 14. In the embodiment of the present application, the front camera or the light sensor of the mobile phone can be used to obtain the intensity of the current ambient light.

In some embodiments, referring to FIG. 5, FIG. 5 illustrates steps of a biometric information sensing method of another embodiment of the present application. In this implementation manner, after step S112 or S113, the method further includes:

Step S114: Verify biometric information obtained by performing biometric information sensing, and perform corresponding operations after the verification is passed. Specifically, the corresponding operations include: an unlock operation, a payment operation, launching an application, or sending a file, and the like.

The sensing method of the above biometric information may be implemented by a hardware circuit structure, or may be performed by a software code, for example, by a string of instruction codes, and stored in a storage medium for the processor to call to execute the above-mentioned creature. The sensing step of the feature information.

6 and FIG. 7, FIG. 6 shows the structure of the biometric information sensing device according to an embodiment of the present application, and FIG. 7 shows the structure of the biometric information sensing device according to another embodiment of the present application. . In this embodiment, the biological characteristic information sensing device 300 includes a plurality of sensing units 310 and a controller 320. The controller 320 is configured to: when performing the sensing of the biometric information, acquire the intensity of the current ambient light, and when the intensity of the current ambient light is greater than or equal to the preset first intensity threshold, turn off the performing light sensing. A light source is required, and the plurality of sensing units are controlled to perform light sensing. The sensing unit 310 is configured to perform sensing of biometric information on a target object that approaches or touches the sensing device 300 according to the control of the controller 320.

In some embodiments, the light source required to perform light sensing is a light source that is independent of the exterior of the biometric information sensing device 300, ie, the light source on the electronic device to which the biometric information sensing device 300 is applied. Of course, the light source can also be disposed on the biometric information sensing device 300, such as the light source 340 shown in FIG.

Taking the target object as a finger as an example, when the finger approaches or touches the sensing device, if ambient light is irradiated on the finger, and the finger has many tissue structures, such as epidermis, bone, meat, blood vessel, etc., the ambient light Some of the light signals penetrate the fingers and some of the light signals are absorbed by the fingers. If the intensity of the ambient light is stronger, the intensity of the light signal penetrating the finger is stronger, and the applicant has found in the research that when the intensity of the ambient light reaches a certain level, according to the ambient light that penetrates the finger, A fingerprint image that can form a finger. The first intensity threshold is a critical value that reaches a certain level.

When the target object approaches or touches the sensing device 300, the sensing device 300 activates and begins performing sensing of the biometric information. Before the sensing device 300 starts performing the sensing of the biometric information, the intensity of the current ambient light is first acquired, thereby controlling the turning on or off of the light source 340 according to the intensity of the current ambient light, so that the sensing device 300 utilizes different optical signals. The sensing of biometric information is performed.

In the embodiment of the present application, the specific value of the first intensity threshold is set in advance. When it is determined that the intensity of the current ambient light is greater than or equal to the first intensity threshold, the light source is turned off, so that the sensing device 300 utilizes the ambient light to perform sensing of the biometric information on the target object approaching or touching the sensing device 300. Specifically, referring to FIG. 3, when the finger approaches or touches the sensing device 300, the light source is turned off because the ambient light intensity exceeds the first intensity threshold. The sensing device 300 senses an optical signal that the ambient light penetrates the finger, and forms a fingerprint image of the finger according to the sensing signal.

In some embodiments, the controller 320 is further configured to: when the intensity of the current ambient light is less than a preset first intensity threshold, control the light source to be turned on, and control the plurality of sensing units 310 to perform light sensing. When it is determined that the intensity of the current ambient light is less than the first intensity threshold, the light source is turned on, so that the sensing device 300 senses the biometric information of the target object approaching or touching the sensing device 300 by using the light signal emitted by the light source. As shown in FIG. 1 , when a finger approaches or touches the sensing device, the light source emits an optical signal and reaches the finger, and the optical signal reflected by the surface of the finger is sensed by the sensing device 300 according to the sensing device 300. The signal forms a fingerprint image of the finger.

In some embodiments, the controller 320 is further configured to: when the control sensing unit 310 performs light sensing, determine a contact area of the target object, and control the sensing unit 310 corresponding to the contact area to perform light sensing. Specifically, the sensing device includes a plurality of sensing units 310, and the sensing device 300 is applied to biometric recognition of a target object within a screen of the electronic device, when the sensing device 300 is controlled to perform sensing of the biometric information. By scanning all the sensing units 310, the sensing unit 310 is driven to perform light sensing one by one, and the biometric information of the target object is formed according to the sensing signals obtained by all the sensing units 310. Of course, since the contact area of the target object is smaller than the size of the display area, when the sensing device performs the sensing of the biometric information, the contact area of the target object may be determined first, and the sensing unit 310 corresponding to the contact area may be controlled. , sensing the biometric information. In this way, not only the sensing of the biometric information of the target object is achieved, but also all the sensing units 310 are prevented from working, thereby reducing the sensing power consumption and also speeding up the sensing speed.

Further, the controller 320 is configured to: correspondingly adjust the intensity of the optical signal emitted by the light source 340 according to the strength of the current ambient light. In the implementation of the sensing of the biometric information by using the optical signal of the light source, in order to prevent the ambient light that penetrates the finger from affecting the sensing of the sensing device, in the embodiment of the present application, according to the current ambient light intensity, the corresponding adjustment The intensity of the light signal emitted by source 340. Specifically, the stronger the current ambient light, the greater the intensity of the light signal emitted by the light source 340; the weaker the current ambient light intensity, the less the intensity of the light signal emitted by the light source 340. When the ambient light is strong, the light signal that penetrates the finger is relatively strong. Therefore, the intensity of the light signal emitted by the light source 340 is increased, so that the light signal reflected by the surface of the finger is relatively strong, and the ambient light can be reduced to some extent. Impact. When the ambient light is weak, the light signal penetrating the finger is relatively weak, so that the sensing of the biometric information is not substantially affected, thereby weakening the intensity of the light signal emitted by the light source 340, and the biometric information can be realized. Test, and save electricity.

In some embodiments, in the biometric information sensing device, the light source 340 may include a plurality of light emitting elements for emitting light of a single color, such as white light, blue light, green light, ultraviolet light, infrared light, or the like. Wait. Due to the selection of the light source, not only the sensing of the biometric information can be realized, but also the living body detection of the target object can be realized, thereby improving the safety of the biometric recognition.

Further, with continued reference to FIG. 6 , the biometric information sensing device 300 further includes a substrate 301 , and a plurality of sensing units 310 are disposed on the substrate 301 . The substrate 301 may include a transparent substrate such as, but not limited to, a glass substrate, a plastic substrate, a crystal, a sapphire, etc., and a non-transparent substrate such as, but not limited to, a silicon substrate, a metal substrate, a circuit board, or the like. In addition, the substrate may be a rigid material or a flexible material such as a flexible film. If the substrate is a flexible material, the biometric information sensing device is not only thinner in thickness, but also applicable to an electronic device having a curved display. Alternatively, the light source 340 may also be disposed on the substrate 301 together with the sensing unit 310. For example, the light emitting element is disposed on a gap of the adjacent sensing unit 310, or the light emitting element is disposed outside the sensing array formed by the sensing unit 310.

Further, the substrate 301 further includes a scan line group and a data line group electrically connected to the plurality of sensing units 310, wherein the scan line group includes a plurality of scan lines 302, and the data line group includes a plurality of data lines 303. The plurality of sensing units 310 are distributed in an array, such as a matrix distribution. Of course, it can also be distributed in other rule manners or in an irregular manner. The plurality of scan lines 302 and the plurality of data lines 303 electrically connected to the sensing unit 310 are disposed to cross each other and disposed between the adjacent sensing units 310. For example, a plurality of scan lines 302 are spaced apart in the Y direction, and each of the scan lines 302 extends in the X direction; a plurality of data lines 303 are spaced apart in the X direction, and each of the data lines 303 extends in the Y direction. However, the plurality of scanning lines 302 and the plurality of data lines 303 are not limited to the vertical arrangement shown in FIG. 6, and may be disposed at an angle, for example, 30°, 60°, or the like. In addition, since the scan line 302 and the data line 303 are electrically conductive, the scan line 302 and the data line 303 at the intersection position are separated by an insulating material.

It should be noted that the distribution and the number of the scan lines 302 and the data lines 303 are not limited to the above-exemplified embodiments, and the corresponding scan line groups and data may be correspondingly set according to the structure of the sensing unit 310. Line group.

In some embodiments, the sensing unit 310 may include a switching device and a photosensitive device, wherein the switching device is, for example but not limited to, any one or several of a triode, a MOS transistor, and a thin film transistor; and the photosensitive device is, for example but not limited to, a photodiode Any one or several of a phototransistor, a photodiode, a photo resistor, and a thin film transistor.

In the above biometric information sensing device 300, the controller 320 provides a driving signal through the scan line to drive the sensing unit 310 to perform light sensing, and to sense the biometric information of the target object approaching or touching the sensing device. Measurement.

Further, the biometric information sensing device further includes a processing unit 330, configured to process the sensing signals output by the plurality of sensing units 310, and obtain biometric information of the target object.

Further, the processing unit 330 and the controller 320 may be selectively formed on the substrate according to the type of the substrate, or may be electrically connected to the sensing unit 310, for example, through a connector (for example, a flexible circuit board). For example, when the substrate 301 is a silicon substrate, the processing unit 330 and the controller 320 may be selectively formed on the substrate 301, and may also be electrically connected to the sensing unit 310, for example, through a flexible circuit board; When the substrate is an insulating substrate, the processing unit 330 and the controller 320 need to be electrically connected to the sensing unit 310, for example, through a flexible circuit board.

In some embodiments, the plurality of sensing units 310, the controller 320, and the processing unit 330 are correspondingly integrated in different chips. For example, the plurality of sensing units 310 are integrated into one sensing chip, and the controller 320 is integrated in the controller 320. A control chip, the processing unit 330 is integrated in a processing chip. Of course, the plurality of sensing units 310 and the controller 320 and the processing unit 330 can also be integrated into one chip.

In some embodiments, the light source is packaged with the sensing chip, which will make assembly of the biometric information sensing device 300 easier. Of course, the light source can also be set independently or integrated with the plurality of sensing units 310 as shown in FIG. 6.

Further, the biometric information sensing device 300 further includes a light sensor for acquiring the intensity of the current ambient light when performing the sensing of the biometric information. The light sensor is independently provided. The function of the light sensor can also be realized by the sensing unit 310. That is, when the sensing of the biometric information is performed by the sensing unit 310, the controller 320 drives the predetermined feeling. The photosensitive device in the measuring unit 310 operates, so that the sensing unit 310 senses the current ambient light and obtains the intensity of the current ambient light according to the sensing signal. In the embodiment of the present application, the sensing of the ambient light intensity is performed by using the sensing unit 310, thereby saving the cost of additionally setting the light sensor.

In some embodiments, the controller 320 is further configured to: when performing the sensing of the biometric information, call an external light sensor to perform a light sensing operation, and receive the intensity of the current ambient light acquired by the external light sensor. In this embodiment, the biometric information sensing device 300 can be applied to an electronic device provided with a light sensor, and the controller 320 has a calling interface, and when the sensing of the biometric information is performed, the light sensor of the electronic device is called by calling the interface. Sensing data to obtain the intensity of the current ambient light based on the photographic data. In the embodiment of the present application, the ambient light intensity is sensed by using an external light sensor, thereby saving the cost of additionally setting the light sensor.

In some embodiments, the biometric information sensing device 300 includes any one or more of a fingerprint sensing device, a pulse sensing device, a blood oxygen sensing device, and a heartbeat sensing device.

In some embodiments, the biometric information sensing device 300 further includes a package housing 350 for packaging the sensing unit 310 and the light source 340. Of course, the package housing 350 can also package components such as the controller 320 together.

In some embodiments, the biometric information sensing device 300 may be disposed in the electronic device to perform sensing of the biometric information on the target object that approaches or touches the biometric information sensing device, and is in the target object. After the biometric information is successfully verified, the corresponding operation on the electronic device is performed.

Further, the electronic device is, for example, a consumer electronic product, a home-based electronic product, a vehicle-mounted electronic product, or a financial terminal product. Among them, consumer electronic products such as mobile phones, tablets, notebook computers, desktop monitors, computer integrated machines and other electronic products using biometric identification technology. Home-based electronic products such as smart door locks, televisions, refrigerators, wearable devices and other electronic products that use biometric technology. Vehicle-mounted electronic products such as car navigation systems, car DVDs, etc. Financial terminal products such as ATM machines, terminals for self-service business, etc.

Referring to Figure 8, Figure 8 shows the structure of an electronic device in accordance with an embodiment of the present application. The electronic device includes:

a light source 410 for emitting an optical signal;

The light sensor 420 is configured to acquire the intensity of the current ambient light;

a biometric information sensing device 430, configured to perform a sensing operation, and perform sensing of biometric information on a target object that approaches or touches the sensing device;

The controller 440 is configured to control the light sensor 420 to acquire the intensity of the current ambient light when performing the sensing of the biometric information, and turn off the current when the intensity of the current ambient light is greater than or equal to the preset first intensity threshold. The light source is controlled, and the biometric information sensing device 430 is controlled to perform a sensing operation.

The difference from the electronic device of the above embodiment is that, in the electronic device in the embodiment of the present application, one or more of the light source 410, the controller 440, and the light sensor 420 are disposed independently of the biometric information sensing device 430. specifically:

In some embodiments, the light source 410 can be a light source that is independently set by the electronic device, dedicated to sensing of biometric information. Of course, the light source 410 can also be implemented by a display panel of an electronic device because the light signal emitted when the display panel is illuminated can be used for sensing of biometric information. The display panel includes a liquid crystal display and an OLED display.

In some embodiments, the biometric information sensing device 430 can be a sensing chip and located below the display panel to enable sensing of biometric information of the target object above the display panel. Of course, the biometric information sensing device 430 can also be a photosensitive panel that is attached to the display panel, and the photosensitive panel is located above the display panel or below the display panel. Referring to FIGS. 9 and 10, FIG. 9 shows a structure in which the biometric information sensing device is located above the display panel, and FIG. 10 shows a structure in which the biometric information sensing device is located below the display panel. As shown in FIG. 9 , the biometric information sensing device 430 is disposed above the display panel 450 . Specifically, the biometric information sensing device 430 includes a plurality of sensing units 431, and the biometric information sensing device 430 includes a plurality of light transmissive regions and a plurality of non-transmissive regions, and the sensing unit 431 can be set according to structural characteristics. In the light-transmitting area or the non-light-transmitting area. For example, if the sensing unit 431 is a light transmissive structure, the sensing unit 431 can be disposed in the light transmissive area. If the sensing unit 431 is a non-transmissive structure, the sensing unit 431 is disposed in the non-transparent area. In the normal display mode, the display panel 450 emits a corresponding optical signal for display according to the display requirement; in other modes, a corresponding optical signal is emitted according to the control of the controller 440 for sensing of the biometric information. Since the display panel 450 is disposed under the biometric information sensing device 430, the display panel 450 has no special structural limitation, as long as it can emit a display structure of an optical signal, such as a liquid crystal display or an OLED display. As shown in FIG. 10, the biometric information sensing device 430 is disposed under the display panel 450. Specifically, the display panel 450 includes a plurality of transparent regions, so that an optical signal reflected by the target object passes through the transparent region. The biometric information sensing device 430 located under the display panel 450 senses. The biometric information sensing device 430 includes a plurality of sensing units 431 for sensing an optical signal from above to form biometric information of the target object. Since the display panel 450 is located above the biometric information sensing device 430, the display panel may be a display structure having a light transmitting property, such as an OLED display.

In some embodiments, the light sensor 420 can be a separate sensor of the electronic device, such as a mobile phone, a palmtop computer, a tablet computer, and the like, all of which are provided with corresponding light sensors. Referring to FIG. 4, the electronic device is a mobile phone, and the front of the mobile phone is a display screen, and the upper end of the mobile phone is provided with components such as a front camera, a light sensor, and an earpiece. In the embodiment of the present application, the front camera or the light sensor of the mobile phone can be used to obtain the intensity of the current ambient light.

Of course, the light sensor 420 can also utilize the light sensing characteristics of the biometric information sensing device 430 such that the biometric information sensing device 430 senses the current ambient light before performing the sensing of the biometric information, and according to the sensing. Signal to obtain the intensity of the current ambient light. The sensing of the ambient light intensity is performed by the biometric information sensing device 430, thereby saving the cost of additionally setting the light sensor 420.

Further, the biometric information sensing device 430 further includes a processing unit 432 for processing the sensing signals output by the plurality of sensing units 431 and obtaining biometric information of the target object.

In some embodiments, the sensing unit 431 is further configured to act as a light sensor to obtain the intensity of the current ambient light.

In some embodiments, the biometric information sensing device 430 is integrated into one sensing chip, or the sensing unit 431 and the processing unit 432 in the biometric information sensing device 430 are integrated in at least two chips.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. The specific features, structures, materials, or characteristics described in the embodiments or examples are included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present application have been shown and described above, it is understood that the foregoing embodiments are illustrative and are not to be construed as limiting the scope of the present application. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

An electronic device, comprising:

a light source for emitting an optical signal;

a light sensor for obtaining the intensity of the current ambient light;

a biometric information sensing device comprising a plurality of sensing units for performing a sensing operation to perform sensing of biometric information on a target object approaching or touching the sensing device;

a controller, configured to: when performing the sensing of the biometric information, control the light sensor to acquire the intensity of the current ambient light, and when the intensity of the current ambient light is greater than or equal to a preset first intensity threshold, turn off the a light source, and controlling the biometric information sensing device to perform a sensing operation.
The electronic device according to claim 1, wherein the controller is further configured to: when the intensity of the current ambient light is less than the first intensity threshold, control the light source to be turned on, and control the biological The feature information sensing device performs a sensing operation.
The electronic device according to claim 2, wherein the controller is further configured to: correspondingly adjust an intensity of the optical signal emitted by the light source according to the intensity of the current ambient light.
The electronic device according to claim 2, wherein the electronic device comprises a display panel, and the controller is further configured to: when the intensity of the current ambient light is less than the first intensity threshold, control the The display panel is illuminated to cause the display panel to emit an optical signal as the light source.
The electronic device according to claim 4, wherein said biometric information sensing device is located above said display panel or under said display panel; or said biometric information sensing device is integrated Inside the display panel.
The electronic device according to claim 5, wherein said biometric information sensing means comprises a sensing area formed by a plurality of sensing units; said display panel comprising a display area formed by a plurality of display pixels And the sensing area is greater than, equal to, or smaller than the display area.
The electronic device according to claim 5, wherein said display panel comprises a plurality of display pixels; said controller is further configured to: determine a contact area of the target object, and control said display panel and said The display pixels corresponding to the contact area are lit.
The electronic device according to claim 4, wherein the display panel is a liquid crystal display or an OLED display.
The electronic device according to claim 2, wherein said light source comprises a plurality of light emitting elements; said controller is further configured to: when said intensity of said current ambient light is less than said first intensity threshold, The plurality of light emitting elements are lit.
The electronic device according to claim 1, wherein the controller is further configured to: determine a contact area of the target object, and control a sensing unit corresponding to the contact area to perform sensing of the biometric information.
The electronic device according to claim 1, wherein the sensing unit is further configured to use the light sensor to acquire the intensity of the current ambient light.
The electronic device according to claim 1, wherein the biometric information sensing device further comprises a processing unit, wherein the processing unit is configured to process the sensing signals output by the plurality of sensing units, and Obtain biometric information of the target object.
The electronic device according to claim 12, wherein the biometric information sensing device is integrated in a sensing chip; or the sensing unit and the processing unit in the biometric information sensing device are integrated in At least two chips.
The electronic device according to claim 1, wherein the biometric information sensing device comprises any one of a fingerprint sensing module, a pulse sensing module, a blood oxygen sensing module, and a heartbeat sensing module. Kind or several.