CN111160253A - Biological identification module, wearable equipment and mobile terminal - Google Patents
Biological identification module, wearable equipment and mobile terminal Download PDFInfo
- Publication number
- CN111160253A CN111160253A CN201911392914.6A CN201911392914A CN111160253A CN 111160253 A CN111160253 A CN 111160253A CN 201911392914 A CN201911392914 A CN 201911392914A CN 111160253 A CN111160253 A CN 111160253A
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- image sensor
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- 238000000605 extraction Methods 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 210000000707 wrist Anatomy 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 210000003462 vein Anatomy 0.000 description 8
- 206010033675 panniculitis Diseases 0.000 description 6
- 238000013186 photoplethysmography Methods 0.000 description 6
- 210000004304 subcutaneous tissue Anatomy 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 3
- 230000000747 cardiac effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/163—Wearable computers, e.g. on a belt
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
- G06F1/1658—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories related to the mounting of internal components, e.g. disc drive or any other functional module
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/14—Vascular patterns
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The invention relates to a biological identification module, wearable equipment and a mobile terminal, wherein the biological identification module comprises a substrate and a luminous layer; the substrate is provided with a first surface and a second surface which are arranged oppositely; the light-emitting layer is arranged on the first surface and comprises at least one feature extraction unit, the feature extraction unit comprises an image sensor and a plurality of display pixels, the plurality of display pixels comprise visible light pixels and infrared light pixels, and the plurality of display pixels are arranged around the periphery of the image sensor. The biological identification module can be made thinner and thinner, has smaller volume, is more suitable for being applied to miniaturized electronic products such as wearable equipment and the like, and reduces the installation space of the biological identification module in the mobile terminal.
Description
Technical Field
The invention relates to the technical field of biological identification, in particular to a biological identification module, wearable equipment and a mobile terminal.
Background
The vein recognition technology is used for identifying the identity of a user by acquiring a near-infrared image of a local part of a human body and realizing the highlighting of veins of the human body by means of an image processing technology. In the related art, the vein recognition process can be completed through a biometric module, the biometric module generally includes an image sensor with a lens and an infrared emitter, the infrared emitter is used for emitting infrared rays towards the subcutaneous tissue of the human body, and the image sensor is used for receiving infrared rays reflected back from the subcutaneous tissue of the human body through the lens so as to extract vein features of the human body.
However, the existing biometric module is too large in size, and cannot be applied to miniaturized electronic products such as wearable devices, which is not favorable for development of light and thin miniaturized electronic products such as wearable devices.
Disclosure of Invention
Accordingly, it is desirable to provide a biometric module, a wearable device and a mobile terminal, which are used to solve the problem that the biometric module is too large in size and cannot be applied to miniaturized electronic products such as wearable devices.
A biometric module comprising:
the substrate is provided with a first surface and a second surface which are arranged oppositely; and
the light-emitting layer is arranged on the first surface and comprises at least one feature extraction unit, the feature extraction unit comprises an image sensor and a plurality of display pixels, the display pixels comprise visible light pixels and infrared light pixels, and the display pixels are arranged around the periphery of the image sensor.
In one embodiment, the visible light pixel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel for emitting different color light.
In one embodiment, the feature extraction unit further includes a pinhole array mask disposed on a side of the image sensor away from the substrate.
In one embodiment, the image sensor has a photosensitive area and a non-photosensitive area surrounding the photosensitive area, the feature extraction unit includes a partition plate disposed in the non-photosensitive area of the image sensor and surrounding the photosensitive area, and the pinhole array mask is disposed on a side of the partition plate departing from the image sensor to be spaced from the image sensor.
In one embodiment, the substrate is a flexible circuit board.
A wearable device, comprising:
a main body;
a band connected to the main body and for wearing the main body on a wrist of a user;
the biological identification module is connected with the bandage, and when the main body is worn on the wrist of a user, the luminous layer faces to the side of the wrist of the user.
In one embodiment, the number of the biological recognition modules is multiple, and the biological recognition modules are arranged at intervals along the extending direction of the binding band.
A wearable device, comprising:
a main body;
a band connected to the main body and for wearing the main body on a wrist of a user;
the biological identification module is connected with the main body.
In one embodiment, the biometric module is connected with the side circumference of the main body, and the luminescent layer faces to the side of the back of the hand of the user when the main body is worn on the wrist of the user.
A mobile terminal, comprising:
a terminal body; and
the biological identification module is connected with the terminal body.
The biological identification module, the wearable device and the mobile terminal provided by the invention have the following advantages:
the display pixels can be used as a light source to guide light into fingers, the back of hands or palms of users and can guide the light into the image sensor, so that biological characteristics of human bodies can be acquired, for example, vein recognition can be carried out by means of the acquired characteristics, or changes of blood vessel volumes in a cardiac cycle can be traced by means of different intensities of reflected light of infrared light after the infrared light is absorbed by blood and tissues of the human bodies, and the heart rate can be calculated from the obtained pulse waveforms. Because the image sensor and the display pixels for emitting light are integrated on the same surface of the substrate, the biological identification module can be made thinner and thinner, has smaller volume, is more suitable for being applied to miniaturized electronic products such as wearable equipment and the like, and reduces the installation space of the biological identification module in the mobile terminal.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wearable device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wearable device according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a biometric module of an embodiment of the present invention being worn on a wrist of a human body;
FIG. 5 is a top view of the biometric module of FIG. 4;
fig. 6 is a partial cross-sectional view taken along line ii-ii in fig. 5.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, in one embodiment, the present invention will be described with reference to a mobile terminal 10 by taking a smart phone as an example. Those skilled in the art will readily appreciate that the mobile terminal 10 of the present application may be any device having communication and storage functions, such as a smart phone, a tablet computer, a notebook computer, a portable phone, a video phone, a digital still camera, an electronic book reader, a Portable Multimedia Player (PMP), a mobile medical device, and the like, and the representation of the mobile terminal 10 is not limited thereto.
The mobile terminal 10 includes a terminal body 10a and a biometric module 10b provided in the terminal body 10 a. In an embodiment, the terminal body 10a includes a middle frame 11, a rear cover 12 and a display 13, the rear cover 12 and the display 13 are respectively connected to two opposite sides of the middle frame 11 and enclose to form an accommodating space, and a main board, a memory, a power supply and other devices of the mobile terminal 10 are disposed in the accommodating space. The biometric module 10b is installed on a side where a displayable region of the display screen 13 is located, and is electrically connected to the main board inside the mobile terminal 10, so as to obtain a biometric feature of the user, for example, obtain a vein feature of the user for identification, or be used for implementing a PPG (photoplethysmography) function. Of course, the biometric authentication module 10b may be mounted on the side of the rear cover 12. The mounting position of the biometric authentication module 10b is not limited in any way.
Referring to fig. 2, in an embodiment, the present invention will be described with reference to a wearable device such as a smart watch as an example of the mobile terminal 10. The wearable device includes a main body 100, a band 200 connected to the main body 100, and a biometric module 300 connected to the band 200. In other embodiments, referring to fig. 3, the biometric module 300 may also be disposed on the main body 100, such as the side periphery 110 of the main body 100. The band 200 is used to hold the body 100 when the wearable device is worn by the wearer, for example, when the wearable device is worn on the wrist of the human body by the wearer, the band 200 is configured to be able to fix the body 100 to the wrist of the human body. The biometric module 300 is used to obtain the biometric features of the wearer when the wearer wears the wearable device on the wrist, for example, to obtain the vein features of the user for identification, or to implement PPG (photoplethysmography) functions. Those skilled in the art will readily understand that the wearable device of the present application is not limited to a smart watch, and any other wearable device having a main body 100 and a strap 200, such as a smart band, a smart arm ring, etc., may be applicable to the technical solution of the embodiments of the present application.
Referring to fig. 4 and 5, the bio-recognition module 300 (i.e., the bio-recognition module 10b, hereinafter, described with reference to the label 300 for convenience of description) includes a substrate 310 and a light emitting layer 320.
The substrate 310 may be a PCB (Printed Circuit Board), a rigid-flex Board, or a reinforced FPC (Flexible Printed Circuit). Wherein, the rigid-flex board is including range upon range of PCB and the FPC that sets up, and the flexible circuit board after the reinforcement is including range upon range of FPC and the reinforcement piece that sets up, and the reinforcement piece can be for having the steel sheet of good heat dispersion. The substrate 310 has a first surface 311 and a second surface 312 which are oppositely arranged, and the first surface 311 is used for arranging the light emitting layer 320. When the biometric module 300 is mounted on the band 200 and the second surface 312 is connected to the inner side of the band 200, the base plate 110 is preferably a flexible circuit board having an excellent bending property so as to be well adapted to the shape of the band 200 when the band 200 is bent, thereby preventing the base plate 110 from being damaged by bending of the band 200. The number of the biometric modules 300 may be one or more, and when the number of the biometric modules 300 is plural, the plurality of biometric modules 300 are arranged at intervals along the extending direction of the band 200.
The light emitting layer 320 is disposed on the first surface 311, and the light emitting layer 320 includes at least one feature extraction unit 320a (fig. 5 illustrates four feature extraction units 320a, but the number of feature extraction units 320a is not limited thereto). Each feature extraction unit 320a includes an image sensor 321 and a plurality of display pixels 322. The different LEDs of the plurality of display pixels 322 may allow for dynamic variation and more flexibility with respect to wavelength of light and illumination angle. The display pixel 322 includes a visible light pixel 322a and an infrared light pixel 322b, for example, in one embodiment, the visible light pixel 322a includes a first sub-pixel 3221, a second sub-pixel 3222, and a third sub-pixel 3223 for emitting light of different colors. The first, second and third sub-pixels 3221, 3222 and 3223 may be R-LED, G-LED, B-LED, respectively. The plurality of display pixels 322 are disposed around the outer circumference of the image sensor 321. When the biometric authentication module 300 is mounted to the band 200, as shown with reference to fig. 2, and the main body 100 is worn on the wrist of the user, the luminescent layer 320 faces the side where the wrist of the user is located. In this way, the display pixels 322 as a light source can guide light to the subcutaneous tissue of the wrist of the user and guide the light reflected by the subcutaneous tissue to the image sensor 321, so as to acquire biological characteristics of the human body, for example, vein recognition can be performed by the acquired characteristics, or the change of the blood vessel volume in the cardiac cycle can be traced by the difference of the reflected light intensity after infrared light is absorbed by blood and tissue of the human body, and the heart rate can be calculated from the obtained pulse waveform (i.e. the PPG function is realized).
When the biometric authentication module 300 is mounted to the main body 100, as shown in fig. 3, and the main body 100 is worn on the wrist of the user, the luminescent layer 320 faces the back of the hand of the user. In this way, the display pixels 322 as a light source can guide light to the subcutaneous tissue on the back of the hand of the user, and can guide the light reflected by the subcutaneous tissue to the image sensor 321, so that the biological characteristics of the human body can be acquired, for example, the change of the blood vessel volume in the cardiac cycle can be traced by the difference of the reflected light intensity after infrared light passes through blood on the back of the hand and the tissue is absorbed, and the heart rate can be calculated from the obtained pulse waveform (i.e. the PPG function is realized).
In the biometric module 300 of the present invention, since the image sensor 321 and the display pixel 322 for emitting light are integrated on the same surface of the substrate 310, the biometric module 300 of the present invention can be made thinner and lighter, has a smaller volume, and is more suitable for being applied to miniaturized electronic products such as wearable devices, so as to reduce the installation space of the biometric module 300 inside the mobile terminal 10.
In one embodiment, referring to fig. 5 and 6, the feature extraction unit 320a further includes a pinhole array mask 323 disposed on a side of the image sensor 321 away from the substrate 310. Pinhole array reticle 323 is an opaque mask and has a plurality of openings (or pinholes) 3231 therein to allow light to pass therethrough. For example, the openings 3231 may be evenly spaced or spaced in a honeycomb pattern, and the spacing between the openings 3231 may be, for example, in the range of 1mm to 3 mm. One skilled in the art will readily appreciate that the spacing between the openings 3231 can affect image resolution. Additionally, the size of each opening 3231 may be, for example, in the range of 5 microns to 40 microns. Of course, the size of each opening 3231 affects the sensed image from the image sensor 321. The size and spacing of the openings 3231 is not limited. The pinhole array mask 323 may include chromium to provide opacity, although other materials may be used for the pinhole array mask 323 to provide opacity.
In an embodiment, referring to fig. 6, the image sensor 321 has a photosensitive region 3211 and a non-photosensitive region 3212 surrounding the photosensitive region 3211, the feature extraction unit 320a includes a partition 324, the partition 324 is disposed in the non-photosensitive region 3212 of the image sensor 321 and surrounds the photosensitive region 3211, and the pinhole array mask 323 is disposed on a side of the partition 324 away from the image sensor 321 to be spaced apart from the image sensor 321.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A biometric identification module, comprising:
the substrate is provided with a first surface and a second surface which are arranged oppositely; and
the light-emitting layer is arranged on the first surface and comprises at least one feature extraction unit, the feature extraction unit comprises an image sensor and a plurality of display pixels, the display pixels comprise visible light pixels and infrared light pixels, and the display pixels are arranged around the periphery of the image sensor.
2. The biometric module of claim 1, wherein the visible light pixel comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel for emitting different colors of light.
3. The biometric module of claim 1, wherein the feature extraction unit further comprises a pinhole array mask disposed on a side of the image sensor facing away from the substrate.
4. The biometric module set according to claim 3, wherein the image sensor has a photosensitive area and a non-photosensitive area surrounding the photosensitive area, the feature extraction unit includes a partition plate disposed in the non-photosensitive area of the image sensor and surrounding the photosensitive area, and the pinhole array mask is disposed on a side of the partition plate away from the image sensor to be spaced from the image sensor.
5. The biometric module of any one of claims 1 to 4, wherein the substrate is a flexible circuit board.
6. A wearable device, comprising:
a main body;
a band connected to the main body and for wearing the main body on a wrist of a user;
the biometric module according to any one of claims 1 to 5, wherein the band is attached to the body such that the luminescent layer faces a side of the wrist of the user when the body is worn on the wrist of the user.
7. The wearable device according to claim 6, wherein the number of the biometric modules is plural, and the plural biometric modules are arranged at intervals along an extending direction of the strap.
8. A wearable device, comprising:
a main body;
a band connected to the main body and for wearing the main body on a wrist of a user;
the biometric module as in any one of claims 1-5 being coupled to the body.
9. The wearable device according to claim 8, wherein the biometric module is connected to a side circumference of the body, and the light emitting layer faces a side of a back of a hand of the user when the body is worn on the wrist of the user.
10. A mobile terminal, comprising:
a terminal body; and
the biometric module according to any one of claims 1 to 5, being connected to the terminal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911392914.6A CN111160253A (en) | 2019-12-30 | 2019-12-30 | Biological identification module, wearable equipment and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911392914.6A CN111160253A (en) | 2019-12-30 | 2019-12-30 | Biological identification module, wearable equipment and mobile terminal |
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| Publication Number | Publication Date |
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| CN111160253A true CN111160253A (en) | 2020-05-15 |
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| CN201911392914.6A Pending CN111160253A (en) | 2019-12-30 | 2019-12-30 | Biological identification module, wearable equipment and mobile terminal |
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Application publication date: 20200515 |