WO2022141606A1 - Appareil de détection optique d'empreintes digitales et dispositif électronique - Google Patents

Appareil de détection optique d'empreintes digitales et dispositif électronique Download PDF

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Publication number
WO2022141606A1
WO2022141606A1 PCT/CN2020/142597 CN2020142597W WO2022141606A1 WO 2022141606 A1 WO2022141606 A1 WO 2022141606A1 CN 2020142597 W CN2020142597 W CN 2020142597W WO 2022141606 A1 WO2022141606 A1 WO 2022141606A1
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WIPO (PCT)
Prior art keywords
fingerprint detection
detection device
optical
lens
cover plate
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Application number
PCT/CN2020/142597
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English (en)
Chinese (zh)
Inventor
王仁峰
郭益平
黄新利
刘凯
龙卫
Original Assignee
深圳市汇顶科技股份有限公司
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Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2020/142597 priority Critical patent/WO2022141606A1/fr
Publication of WO2022141606A1 publication Critical patent/WO2022141606A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints

Definitions

  • the present application relates to the technical field of biometric detection, and more particularly, to an optical fingerprint detection device and an electronic device.
  • fingerprint detection technology is widely used in mobile terminal design, automotive electronics, smart home and other fields. Consumers have increased functional requirements for various electronic terminal products, and at the same time, the product size is required to be as thin and light as possible. Therefore, the internal structure of electronic products is becoming more and more compact, and the structural design of the fingerprint detection function device is more difficult. As a result, the fingerprint detection device is miniaturized and other functional devices. The demand for integration is increasingly urgent, requiring fingerprint detection devices to achieve more accurate functions while occupying a smaller volume of electronic products.
  • the mainstream fingerprint detection devices are mainly capacitive fingerprint detection devices and optical fingerprint detection devices.
  • the optical fingerprint detection device is generally installed inside the display screen of the electronic device or below the display screen, and integrated inside the display screen will display the display on the display screen. The function will have a certain impact, and setting it under the display screen will occupy a part of the thickness space of the electronic device, which is not conducive to the development of thin and light electronic devices.
  • the embodiments of the present application provide an optical fingerprint detection device and an electronic device, which can reduce the space occupied in the electronic device under the premise of taking into account the performance of the optical fingerprint detection device, which is beneficial to the development of miniaturization and thinning of the electronic device.
  • an optical fingerprint detection device for being arranged on the side of an electronic device, the optical fingerprint detection device includes: a cover plate; a lens assembly and a fingerprint sensor, which are sequentially arranged in a first direction of the cover plate, the first One direction faces the inner side of the side surface of the electronic device; a first substrate is disposed in the first direction of the fingerprint sensor and is used to support the fingerprint sensor; a supporting member is connected to the lens assembly, the cover plate and the first substrate, a second direction for supporting the lens assembly and the cover plate in the fingerprint sensor, the second direction facing the outside of the side of the electronic device; a light source for emitting a light signal to the finger at the cover plate, the light The signal is reflected or transmitted by the finger to form a fingerprint light signal carrying fingerprint information, and the lens assembly is used to image the fingerprint light signal to the fingerprint sensor for fingerprint detection.
  • the optical fingerprint detection device is arranged in the side surface of the electronic device, using the The side space of the electronic device is relatively abundant, and the optical fingerprint detection device does not need to be arranged under the display screen, thus saving the space under the screen, and it will not restrict the performance of the optical fingerprint detection device due to the narrow space under the screen. It is not only conducive to the development of light and thin electronic equipment, but also conducive to further improving the performance of the optical fingerprint detection device.
  • the cover plate is an arc surface cover plate, and the arc surface of the cover plate faces the outside of the electronic device.
  • the cover plate is designed as an arc surface cover plate, and its arc surface is used for contact with the user's finger.
  • the arc of the arc cover can be designed according to the curvature of the side of the electronic device, so that the arc cover and the side of the electronic device form a good fit and improve the appearance of the electronic device.
  • the current capacitive fingerprint detection devices installed on the surface of electronic equipment are generally flat structures, which are relatively simple in appearance, have no three-dimensional sense, and have poor customer experience. This leads to problems such as misjudgment of fingerprint identification, and when the mobile phone is dropped, it will damage the plane of the entire capacitive fingerprint detection device, which affects the performance of the fingerprint detection device. And even if the arc cover is set above the capacitive fingerprint detection device, since the detection principle of the capacitive fingerprint detection device is based on the capacitance detection between the finger and the electrode, the arc cover will affect the capacitance between the finger and the electrode, causing The fingerprint signal detected by the capacitive fingerprint detection device becomes smaller, which affects the performance of fingerprint detection.
  • the arc of the arc surface cover is too large and the distance between the finger and the capacitive fingerprint device is too far, it may cause the capacitive fingerprint detection device.
  • the detected fingerprint signal is not available, therefore, the radian of the curved cover cannot be designed correspondingly according to the radian of the surface of the electronic device. To sum up, it is not suitable to add a cover plate structure on the surface of the capacitive fingerprint detection device, and the optical fingerprint detection device is superior to the capacitive fingerprint detection device in the aesthetics and adaptability of the electronic equipment.
  • the lens assembly includes a lens and a lens barrel, the lens is disposed in the lens barrel; the support is connected to the lens barrel, and supports the lens barrel to be disposed in the second direction of the fingerprint sensor .
  • the lens includes an aspherical lens or an aspherical lens group.
  • the optical fingerprint detection device includes: a plurality of the lens assemblies and a plurality of the fingerprint sensors, the plurality of the lens assemblies are disposed in the second direction of the plurality of fingerprint sensors in a one-to-one correspondence, and The plurality of lens assemblies and the plurality of fingerprint sensors are arranged along the long sides of the side surface of the electronic device.
  • the optical fingerprint detection device includes: a plurality of the lens assemblies and a fingerprint sensor, the fingerprint sensor includes a plurality of imaging regions, and the plurality of the lens assemblies are disposed in the fingerprint sensor in a one-to-one correspondence In the second direction of the plurality of imaging regions, the plurality of lens assemblies and the plurality of imaging regions are arranged along the long sides of the side surface of the electronic device.
  • the cover plate is a first optical imaging element
  • the lens assembly is a second optical imaging element; the cover plate and the lens assembly are used to image the fingerprint optical signal to the fingerprint sensor for performing Fingerprint detection.
  • the first optical imaging element includes: a plurality of first optical imaging parts
  • the second optical imaging element includes: a plurality of second optical imaging parts; the plurality of first optical imaging parts one by one Corresponding to the plurality of second optical imaging parts, a plurality of lens parts are formed, and the plurality of lens parts are arranged along the long side of the side surface of the electronic device.
  • the first optical imaging part is a concave lens
  • the second optical imaging part is a convex lens or a group of convex lenses.
  • the optical fingerprint detection device includes: a plurality of the fingerprint sensors, and the plurality of lens parts are disposed in the second direction of the plurality of fingerprint sensors in a one-to-one correspondence; or, the optical fingerprint detection device Including: a fingerprint sensor, the fingerprint sensor includes a plurality of imaging regions, and the plurality of lens parts are arranged in the second direction of the plurality of imaging regions in the fingerprint sensor in a one-to-one correspondence.
  • the support member includes a first support portion and a second support portion, the first support portion is used for connecting and fixing the lens assembly, and the second support portion is used for fixedly connecting the first support portion and the first substrate, so that the lens assembly is arranged in the second direction of the first substrate.
  • the second support portion is a hollow cylindrical structure
  • the fingerprint sensor is disposed in the hollow cylindrical structure
  • the light source is disposed outside the hollow cylindrical structure.
  • the cover plate is fixedly connected to the peripheral edge region of the first support portion through an adhesive layer, so that the cover plate is disposed in the second direction of the lens assembly.
  • the support member further includes a third support portion, disposed on a side of the second support portion away from the fingerprint sensor, and connected to the second direction of the first substrate; the cover plate The cover plate is fixedly connected to a part of the edge region of the first support portion and the third support portion through an adhesive layer, so that the cover plate is arranged in the second direction of the lens assembly.
  • the light source is disposed between the third support portion and the second support portion, and the cover plate is disposed in the second direction of the light source.
  • the optical fingerprint detection device further includes: foam, disposed between the light source and the lens assembly.
  • the foam is disposed on the peripheral edge region of the first support portion, and connects the first support portion and the cover plate.
  • the light source is disposed in the second direction of the first substrate, and the first substrate is used to support the light source.
  • the optical fingerprint detection device further includes a second substrate, the second substrate and the first substrate are arranged on the same plane, and the light source is arranged in the first direction of the second substrate, the The second substrate is used to support the light source.
  • the optical fingerprint detection device further includes a second substrate, the second substrate is disposed in the second direction of the first support portion in the support member, and the light source is disposed in the second substrate of the second substrate In the first direction, the first support portion and the second substrate are used to support the light source.
  • the cover plate, the lens assembly, the fingerprint sensor and the support are arranged in a first accommodating area on the side of the electronic device, and the light source is arranged on a second side of the electronic device. In the accommodating area, the first accommodating area is adjacent to the second accommodating area.
  • the cover plate, the lens assembly, the fingerprint sensor, the support and the light source are all disposed in the first accommodating area on the side of the electronic device.
  • the cover plate is made of a transparent material, or the cover plate includes a filter material, and the filter material is used to pass the light signal of the target wavelength band and filter the light signal of the non-target wavelength band.
  • the optical fingerprint detection device further includes: a filter layer, disposed between the lens assembly and the fingerprint sensor, for passing the light signal of the target wavelength band and filtering the light signal of the non-target wavelength band.
  • the light source is used to emit light signals in an infrared wavelength band
  • the target wavelength band includes an infrared wavelength band
  • the optical fingerprint detection device is arranged in a button on the side of the electronic device.
  • the key is only used to implement the fingerprint detection function, or the key is used to implement the fingerprint detection function and the target function of the electronic device.
  • an electronic device including: the optical fingerprint detection apparatus according to the first aspect or any possible implementation manner of the first aspect.
  • the electronic device further includes: an accommodating area disposed on the side of the electronic device and a carrier plate disposed at the accommodating area; the optical fingerprint detection device is fixedly disposed on the carrier plate.
  • the carrier board is disposed in the accommodating area, or the carrier board is disposed in a first direction of the accommodating area, wherein the first direction faces the inner side of the side surface of the electronic device.
  • the carrier board is a mechanical structure or an electrical structure in the electronic device.
  • FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 3 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 4 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 5 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a position design of a light source according to an embodiment of the present application.
  • FIG. 7 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 8 is another schematic structural diagram of an optical fingerprint detection apparatus according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another position design of a light source according to an embodiment of the present application.
  • FIG. 10 is another schematic structural diagram of an optical fingerprint detection apparatus according to an embodiment of the present application.
  • FIG. 11 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 12 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 14 is another schematic structural diagram of an optical fingerprint detection device according to an embodiment of the present application.
  • FIG. 15 is another schematic structural diagram of an optical fingerprint detection apparatus according to an embodiment of the present application.
  • embodiments of the present application can be applied to optical biometric identification systems, including but not limited to optical fingerprint detection systems and products based on optical fingerprint imaging.
  • the embodiments of the present application only take an optical fingerprint detection system as an example for description, but should not constitute any limitation to the embodiments of the present application, and the embodiments of the present application are also applicable to other systems adopting optical imaging technology and the like.
  • the optical fingerprint detection system can be applied to smart phones, tablet computers, smart wearable devices, and other types of mobile terminals or other electronic devices. More specifically, in the above electronic device, the optical fingerprint detection system may include an optical fingerprint detection device and a processing unit, wherein the optical fingerprint detection device is used for optically imaging the fingerprint, and the processing unit is used for fingerprint detection and identification of the fingerprint image. and other processing to obtain relevant detection results and identification results and provide them to the electronic device, so as to meet the relevant needs of users.
  • the optical fingerprint detection device may be disposed on any surface of the electronic device that interacts with the user, including but not limited to the front, back, or side surface of the electronic device.
  • the electronic device in which the optical fingerprint detection system provided by the embodiment of the present application is located is a mobile phone, wherein the optical fingerprint detection device may be arranged on the side of the mobile phone. As an example, it may be embedded, raised or flat. It is arranged on the side of the mobile phone, and the present application does not specifically limit the configuration of the arrangement on the side of the mobile phone.
  • the optical fingerprint detection device may be an independent component disposed on the side of the mobile phone, and is only used to realize the fingerprint detection function;
  • the optical fingerprint detection device can be integrated on a target button on the side of the mobile phone.
  • the target button includes but is not limited to a power button of an electronic device.
  • the power button is used to start/wake up the mobile phone.
  • it can also be used to realize the function of fingerprint detection.
  • the mobile phone on the basis of successful fingerprint detection, can be restarted/wake up to improve the security performance of mobile phone authentication.
  • FIG. 2 shows a schematic structural diagram of an optical fingerprint detection apparatus 100 in an embodiment of the present application.
  • the optical fingerprint detection device 100 can be disposed on the side of the mobile phone in FIG. 1 , optionally, it can be fixedly disposed on the side of the mobile phone, or can also be disposed on the buttons on the side of the mobile phone shown in FIG. 1 .
  • the schematic structural diagram shown in FIG. 2 may be a schematic cross-sectional structural diagram along the plane where the XZ axis in FIG. 1 is located.
  • the positive direction of the Z axis is the direction toward the outside of the side surface of the electronic device, and the negative direction of the Z axis is the direction toward the inner side of the side surface of the electronic device.
  • the X-axis is the short-side direction of the side of the electronic device
  • the Y-axis is the long-side direction of the side of the electronic device.
  • the optical fingerprint detection device 100 includes: a cover plate 110 , a lens assembly 120 , a fingerprint sensor 130 , a first substrate 140 , a support member 150 and a light source 160 .
  • the lens assembly 120 and the fingerprint sensor 130 are sequentially arranged in the first direction of the cover plate 110, and the first direction faces the inner side of the side surface of the electronic device;
  • the first substrate 140 is disposed in the first direction of the fingerprint sensor 130 for supporting the fingerprint sensor 130;
  • the support 150 is connected to the lens assembly 120, the cover plate 110 and the first substrate 140, and is used for supporting the lens assembly 120 and the cover plate 110 in a second direction of the fingerprint sensor 130, the second direction facing the outer side of the side of the electronic device .
  • the light source 160 is used for emitting a light signal to the finger at the cover plate 110, the light signal is reflected or transmitted by the finger to form a fingerprint light signal carrying the fingerprint information of the finger, and the lens assembly 120 is used for imaging the fingerprint light signal to the fingerprint sensor 130 for fingerprint detection and/or fingerprint identification.
  • a first accommodating area 102 is formed in the outer frame 101 on the side of the electronic device, and the first accommodating area 102 may be a through hole, a groove or an area in a key. At least some components of the fingerprint detection device 100 can be disposed in the first accommodating area 102 .
  • the optical signal formed by the reflection or transmission of the finger may also carry biometric information such as pulse, blood oxygen, and veins.
  • biometric information such as pulse, blood oxygen, and veins.
  • the optical fingerprint detection device of the embodiments of the present application can also be used to detect other biometric information such as pulse, blood oxygen, and veins, so as to perform other functions such as living body detection and human health detection.
  • first direction in the above is toward the inner side of the side of the electronic device, that is, the “first direction” may be the negative direction of the Z axis shown in Figures 1 and 2.
  • first direction can also be written as “below”.
  • second direction in the above is toward the outside of the side surface of the electronic device, that is, the “second direction” may be the positive direction of the Z-axis shown in Figures 1 and 2.
  • the embodiment of the present application provides an optical fingerprint detection device, which uses a lens assembly and a fingerprint sensor to perform optical fingerprint imaging, and has a good fingerprint imaging effect.
  • the optical fingerprint detection device is arranged in the side of the electronic device, and the relatively abundant side space of the electronic device is used, and the optical fingerprint detection device does not need to be arranged under the display screen, thereby saving the space under the screen and making the narrow
  • the small space under the screen restricts the performance of the optical fingerprint detection device, which is not only conducive to the development of thin and light electronic equipment, but also to further improve the performance of the optical fingerprint detection device.
  • the above-mentioned optical fingerprint detection device can be integrated in a button on the side of the electronic device.
  • the button can be a dedicated button for fingerprint detection, or can also be used for fingerprint detection and execution of other functions of the electronic device.
  • multi-function button By adopting this embodiment, it is convenient for users to quickly find the buttons on the surface of the electronic device for fingerprint detection, which can improve user experience.
  • the optical fingerprint detection device reuses the space of the key, which further improves the space utilization in the electronic device.
  • FIG. 3 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 , and the structural schematic diagram may be a cross-sectional structural schematic diagram along the plane where the XZ axis in FIG. 1 is located.
  • the above-mentioned cover plate 110 may be an arc surface cover plate, and the arc surface thereof faces the positive direction of the Z-axis, that is, toward the outside of the electronic device.
  • the curved cover is used for contact with the user's finger. Compared with the flat cover, the curved cover can improve the contact experience of the user's finger. More importantly, the curved surface of the curved cover can be adjusted according to the electronic device. The curvature of the side surface of the device is designed accordingly, so that the curved surface cover plate forms a good fit with the side surface of the electronic device, and the appearance of the electronic device is improved.
  • the current capacitive fingerprint detection devices installed on the surface of electronic equipment are generally flat structures, which are relatively simple in appearance, have no three-dimensional sense, and have poor customer experience. This leads to problems such as misjudgment of fingerprint identification, and when the mobile phone is dropped, it will damage the plane of the entire capacitive fingerprint detection device, which affects the performance of the fingerprint detection device. And even if the arc cover is set above the capacitive fingerprint detection device, since the detection principle of the capacitive fingerprint detection device is based on the capacitance detection between the finger and the electrode, the arc cover will affect the capacitance between the finger and the electrode, causing The fingerprint signal detected by the capacitive fingerprint detection device becomes smaller, which affects the performance of fingerprint detection.
  • the arc of the arc surface cover is too large and the distance between the finger and the capacitive fingerprint device is too far, it may cause the capacitive fingerprint detection device.
  • the detected fingerprint signal is not available, therefore, the radian of the curved cover cannot be designed correspondingly according to the radian of the surface of the electronic device. To sum up, it is not suitable to add a cover plate structure on the surface of the capacitive fingerprint detection device, and the optical fingerprint detection device is superior to the capacitive fingerprint detection device in the aesthetics and adaptability of the electronic equipment.
  • the lens assembly 120 includes a lens 121 and a lens barrel 122, wherein the lens 121 is arranged in the lens barrel 122, and the support 150 is connected to the lens barrel 122, The lens barrel 122 is supported and disposed above the fingerprint sensor 130 .
  • the lens 121 may include an aspherical lens or an aspherical lens group, so as to reduce the imaging distortion of the fingerprint image.
  • the object-side focal length of the aspheric lens or aspheric lens group may be smaller than the focal length of the front camera used for taking pictures or the lens 121 may be a macro lens, so as to meet the requirements of fingerprint detection.
  • the object-side focal length range of the macro lens may be within a preset range, and correspondingly, the object-side focal length of the macro lens may be located on or near the cover plate 110 .
  • the lens 121 can be fixedly disposed in the lens barrel 122 .
  • the lens 121 is also movably disposed in the lens barrel 122 .
  • the lens barrel 122 may include a focusing component for adjusting the position of the lens 121 in the lens barrel 12 to adjust the distance between the lens 121 and the fingerprint sensor 130 .
  • the desired optical imaging of the lens 121 can be realized by focusing, thereby reducing the need for optical imaging of the lens 121 . Processing technology requirements, while improving the performance and efficiency of fingerprint detection.
  • the cover plate 110 can be connected to the support member 150 through the adhesive layer 111 , and fixedly disposed above the lens assembly 120 .
  • the cover plate 110 can be covered and disposed above the lens assembly 120 , in other words, on a plane perpendicular to the Z direction in FIG. 3 , that is, on the XY plane, the orthographic projection of the lens assembly 120 is completely located on the right side of the cover plate 110 . in projection.
  • the material of the cover plate 110 may be a transparent material, or the material of the cover plate 110 may also include a filter material for passing the target wavelength band.
  • the wavelength range of the target band should include at least part of the wavelength range of the optical signal emitted by the light source 160 , and optionally, the wavelength range of the target band is the wavelength range of the optical signal emitted by the light source 160 .
  • the transparent material includes, but is not limited to, glass or resin.
  • the cover plate 110 may be a cover plate structure formed by coating a filter material layer on a transparent substrate, the filter material The layer can be applied to the upper and/or lower surface of the transparent substrate.
  • the cover plate 110 adopts the structure scheme of this embodiment, which can realize the filtering function and have strong mechanical strength, and can prevent the external force from affecting the optical fingerprint detection device 100, especially the lens assembly 120 when the electronic device is affected by external force. cause damage, thereby improving the reliability of the optical fingerprint detection device.
  • the light source 160 (not shown in the figure) is used to emit infrared light and/or near-infrared light to the finger above the cover plate 110, correspondingly, the infrared light and/or near-infrared light can After being reflected or transmitted by the finger, it is transmitted to the lens assembly 120 through the cover plate 110 .
  • the cover plate 110 needs to transmit light signals in the infrared and/or near-infrared band, in other words, the target band includes the infrared and/or near-infrared band.
  • the upper surface and/or the lower surface of the cover plate 110 may be coated with infrared-transmitting ink, so as to transmit light signals in the infrared band and block interfering light signals in the non-infrared band.
  • infrared and/or near-infrared light is emitted through a light source, and the infrared light and/or near-infrared light transmitted by the finger is mainly used for optical fingerprint imaging to perform fingerprint detection. Therefore, the position requirement of the light source is not high, and it only needs to satisfy that the infrared light can reach the finger pressing on the cover plate. Therefore, the position of the light source in the optical fingerprint detection apparatus in the embodiment of the present application can be flexibly set according to the space conditions of different electronic devices.
  • a foam 112 is provided below the cover plate 110 for connecting the cover plate 110 and the support member 150 .
  • the lens assembly 120 is disposed under the middle area of the cover plate 110 , and the foam 112 may be disposed at the edge area of the cover plate 110 .
  • the light signal passing through the middle area of the cover plate 110 will not be affected, so the light signal received by the lens assembly 120 will not be affected.
  • the first support portion 151 in the support member 150 is used to fix and connect the lens assembly 120
  • the adhesive layer 111 for fixing the cover plate 110 may be disposed on the peripheral edge area of the first support portion 151 to The cover plate 110 is fixed and supported.
  • the foam 112 can be disposed on the peripheral edge region of the first support portion 151 and disposed on the side of the adhesive layer 111 close to the lens assembly 120 for connecting and supporting the cover plate 110 .
  • the material of the support member 150 may be an organic plastic, which can be manufactured by an injection molding process with high manufacturing precision to form each component in the support member 150 , which can be combined with the lens assembly 120 and the cover plate 110 . And other components in the optical fingerprint detection device 100 form a good connection and cooperation, and play a stable supporting role, so as to improve the use reliability of the optical fingerprint detection device 100 .
  • the first substrate 140 may be a circuit board, and the fingerprint sensor 130 may be disposed on the first substrate 140 through an adhesive layer, which includes but is not limited to a die attach film (Die Attach Film, DAF) adhesive layer. While supporting the fingerprint sensor 130 , the first substrate 140 is used for electrical connection with the fingerprint sensor 130 , and transmits the photoelectrically converted fingerprint electrical signal of the fingerprint sensor 130 to the processing unit to perform subsequent processing operations such as fingerprint detection.
  • DAF Die Attach Film
  • the first substrate 140 includes, but is not limited to, a printed circuit board (Printed Circuit Board, PCB), a flexible printed circuit board (Flexible Printed Circuit, FPC), a rigid-flex board, or other types of circuit boards, to which the embodiments of the present application There is no specific limitation.
  • the electrical connection method between the fingerprint sensor 130 and the first substrate 140 includes, but is not limited to, wire bonding (Wire Bonding), tape automated bonding (TAB), flip chip (Flip Chip, FC) ) or other types of electrical connection methods, etc., which are not specifically limited in the embodiments of the present application.
  • a reinforcing plate 141 may be further disposed below the first substrate 140 to enhance the mechanical strength of the FPC and support the fingerprint sensor 130 above it.
  • the reinforcing plate 141 includes, but is not limited to, a reinforcing steel plate, and may also be other types of reinforcing plates in the related art, which are not specifically limited in the embodiments of the present application.
  • the fingerprint sensor 130 can be directly disposed above the FPC, or a window can be formed in the FPC, and the fingerprint sensor 130 can be disposed in the window and above the reinforcing plate.
  • the preparation process is simple and the production can be improved.
  • Efficiency by adopting the latter embodiment, the height of the optical fingerprint detection apparatus 100 can be reduced, thereby reducing the space occupied by the electronic equipment.
  • the first substrate 140 may only be used as a circuit board of the fingerprint sensor 130 for transmitting electrical signals of the fingerprint sensor 130 and supporting the fingerprint sensor 130 and the supporting member 150 above it.
  • a processing unit and other types of electrical components may also be disposed on a substrate 140 for performing a complete fingerprint detection function.
  • the first substrate 140 can also be a circuit board of other functional modules in the electronic device, and on this basis, it can be multiplexed into a circuit board of the fingerprint sensor 130 at the same time.
  • the support member 150 further includes a second support portion 152 , and the second support portion 152 is used for fixedly connecting the first support portion 152 and the first substrate 140 , so that the lens assembly 120 is disposed on the first substrate 140 and above the fingerprint sensor 130.
  • the second support portion 152 is disposed on the peripheral edge region of the first substrate 140 .
  • the second support portion 152 may be a hollow cylindrical structure, and the fingerprint sensor 130 is disposed in the hollow cylindrical structure.
  • the second supporting portion 152 is also used for protecting the fingerprint sensor 130 while playing a supporting role.
  • the second support portion 152 can be reused as a structural member of the button.
  • the size or the shape and size of the accommodating area are designed and manufactured for the shape and size of the second support portion 152 and the cover plate 110 .
  • the keys are circular or waist-shaped keys
  • the second support portion 152 may be an annular hollow cylindrical structure.
  • the second support portion 152 may also be a frame-shaped columnar hollow structure.
  • the optical fingerprint detection device 100 further includes: a filter layer 170, which is disposed between the lens assembly 120 and the fingerprint sensor 130, and is used for passing the optical signal of the target wavelength band, filtering unless the optical signal of the target band.
  • a filter layer 170 which is disposed between the lens assembly 120 and the fingerprint sensor 130, and is used for passing the optical signal of the target wavelength band, filtering unless the optical signal of the target band.
  • the wavelength range of the target wavelength band passed by the filter layer 170 should include at least part of the wavelength range of the optical signal emitted by the light source 160.
  • the wavelength range of the target wavelength band The wavelength range is the wavelength range of the optical signal emitted by the light source 160 .
  • the filter layer 170 can be used to pass the infrared light band and/or the near-infrared light band, and filter the non-infrared light band, for example Filter out the visible light band to prevent ambient visible light or light leakage from the display from interfering with fingerprint detection.
  • the filter layer 170 may specifically be a filter, which is fixed above the fingerprint sensor 130 through an adhesive layer and used to cover the pixel array area of the fingerprint sensor 130 .
  • the filter layer 170 can also be directly coated on the surface of the fingerprint sensor 130 and packaged together with the fingerprint sensor 130 in a chip.
  • the optical fingerprint detection device 100 may include both the filter material layer and the filter layer 170 in the cover plate 110, or may only include the filter layer in the cover plate 110.
  • FIG. 4 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • the optical fingerprint detection apparatus 100 shown in FIG. 4 may be a schematic cross-sectional structure diagram along the plane of the YZ axis in FIG. 1 .
  • the optical fingerprint detection device 100 may include: a plurality of lens assemblies 120 , and the support member 150 is configured to support the plurality of lens assemblies 120 to be disposed above the fingerprint sensor 130 .
  • the plurality of lens assemblies 120 are arranged in one or more rows along the Y-axis direction, and the number of lens assemblies in each row is one or more.
  • FIG. 3 and FIG. 4 may be a schematic cross-sectional view of the same optical fingerprint detection device 100 along a plane where the XZ axis is located and a schematic cross-sectional view along a plane where the YZ axis is located.
  • the length of the optical fingerprint detection device 100 in the Y-axis direction is greater than the length in the X-axis direction.
  • the length in the Y direction is greater than the length in the X direction.
  • the optical fingerprint detection apparatus 100 includes one fingerprint sensor 130, and the one fingerprint sensor 130 corresponds to a plurality of lens assemblies 120.
  • the fingerprint sensor 130 includes a plurality of imaging areas.
  • the imaging area 131 includes a pixel array area formed by a plurality of pixel (Pixel) units, which may be referred to as an active area (Active Area, AA) of the fingerprint sensor 130 .
  • the above-mentioned plurality of lens assemblies 120 are disposed above the plurality of imaging areas 131 in a one-to-one correspondence, that is, in the fingerprint sensor 130, each imaging area in the plurality of imaging areas 131 is used to receive a lens assembly 120 corresponding to it. light signal.
  • the plurality of lens assemblies 120 and the plurality of imaging areas 131 are all arranged along the long sides of the side of the electronic device.
  • the filter layer 170 is disposed above the fingerprint sensor 130 , it needs to cover all the imaging areas 131 in the fingerprint sensor 130 .
  • FIG. 5 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • 3 and 5 may be a schematic cross-sectional view of another optical fingerprint detection device 100 along a plane where the XZ axis is located and a schematic cross-sectional view along the plane where the YZ axis is located.
  • the optical fingerprint detection device 100 includes: a plurality of fingerprint sensors 130 , and the above-mentioned plurality of lens assemblies 120 are disposed above the plurality of fingerprint sensors 130 in a one-to-one correspondence, that is, a plurality of fingerprints Each of the fingerprint sensors 130 in the sensors 130 is used to receive the optical signal imaged by the corresponding lens assembly 120 .
  • the plurality of lens assemblies 120 and the plurality of fingerprint sensors 130 are arranged along the long sides of the side of the electronic device.
  • the filter layer 170 may include a plurality of filters or a plurality of filter layers, and the plurality of filters or a plurality of filter layers They are disposed above the plurality of fingerprint sensors 130 in a one-to-one correspondence.
  • the technical solutions shown in FIGS. 3 and 4 above, or the technical solutions shown in FIGS. 3 and 5 are used to make full use of the side space of the electronic device, and an elongated accommodating area is arranged on the side of the electronic device.
  • a plurality of lens components can be arranged along the long side direction of the electronic device, that is, the Y direction in the above, so as to expand the fingerprint detection area, thereby improving the fingerprint detection effect.
  • fingerprint detection is implemented only through one fingerprint sensor corresponding to multiple lens assemblies, and the manufacturing process is simple and the cost is low.
  • multiple fingerprint sensors correspond to multiple lens assemblies, and the operation of multiple fingerprint sensors can be controlled respectively, which has high flexibility. For example, if one of the multiple fingerprint sensors If it is damaged, other sensors can continue to work, which can improve the reliability of the optical fingerprint detection device.
  • the light source 160 may be disposed above the first substrate 140 and electrically connected to the first substrate 140 .
  • the light source 160 is not disposed in the hollow columnar structure formed by the second supporting portion 152 in the support member 150 together with the at least one fingerprint sensor 130, but is disposed outside the hollow columnar structure formed by the second supporting portion 152, that is, the light source 160 is disposed in The side of the second support portion 152 away from the at least one fingerprint sensor 130 prevents the emitted light signal and/or non-finger reflected light signal from the light source 160 from directly entering the at least one fingerprint sensor 130 to interfere with fingerprint detection.
  • the light source 160 may be a point light source, a line light source or a surface light source.
  • the light source 160 may include one or more light emitting diodes (Light Emitting Diode, LED), which are distributed around the second support portion 152 .
  • LED Light Emitting Diode
  • FIG. 6 shows a schematic diagram of a position design of the light source in the embodiment of the present application, which may be a schematic cross-sectional structure diagram along the plane where the XY axis is located in FIG. 1 .
  • the cross section of the first support portion 151 in the plane of the XY axis is a quadrilateral.
  • the light source 160 can be other than the LEDs shown in FIG. 6 , it can also be other forms of light source, such as a line light source, which is disposed on one side of the first support portion 151 .
  • the light source 160 can also be disposed at any position between the first support portion 151 and the first substrate 140 , that is, between the two dotted frames shown in FIG. 6 . any location.
  • the light source 160 and the at least one fingerprint sensor 130 are both disposed on the same first substrate 140, which facilitates the installation of the light source 160, and does not require additional electrical connectors for the light source 160, which is convenient while reducing costs.
  • the common control of the light source 160 and the at least one fingerprint sensor 130 is realized.
  • the light source 160 is disposed obliquely below the cover plate 110, the cover plate 110 does not cover the light source 160, and the light source 160 is disposed in the slit between the cover plate 110 and the outer frame of the electronic device middle.
  • the cover plate 110 may be arranged to cover the light source 160 .
  • FIG. 7 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • the optical fingerprint detection device 100 shown in FIG. 7 may be a schematic cross-sectional structure diagram along the plane of the YZ axis in FIG. 1 .
  • the support member 150 further includes a third support portion 153 disposed on a side of the second support portion 152 away from the at least one fingerprint sensor 130 and connected above the first substrate 140 .
  • the cover plate 110 is fixedly connected to a part of the edge region of the first support portion 151 and the third support portion 153 through the adhesive layer 111 , so that the cover plate 110 is disposed above the at least one lens assembly 120 .
  • the light source 160 is disposed between the second support portion 152 and the third support portion 153 .
  • a foam 112 is disposed between at least one lens assembly 120 and the light source 160 to block the light emitted by the light source 160 and/or the non-finger reflected light signal from entering the lens assembly 120 .
  • the foam 112 can be disposed between the first support portion 151 and the cover plate 110 , and can further support the cover plate 110 above it while blocking the interference light signal.
  • FIG. 7 only shows the case where the optical fingerprint detection device 100 includes one fingerprint sensor 130 , in this embodiment, the optical fingerprint detection device 100 may also include multiple fingerprint sensors 130 , including multiple fingerprint sensors 130
  • the optical fingerprint detection device 100 may also include multiple fingerprint sensors 130 , including multiple fingerprint sensors 130
  • FIG. 5 please refer to the relevant description of FIG. 5 above, which will not be repeated here.
  • the light source 160 may be disposed in various positions in the following embodiments in addition to the positions shown in the embodiments shown in FIG. 4 to FIG. 7 above.
  • FIG. 8 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • the optical fingerprint detection device 100 shown in FIG. 8 may be a schematic cross-sectional structure diagram along the plane of the YZ axis in FIG. 1 .
  • the light source 160 is not disposed on the first substrate 140 , but is disposed on the first support portion 151 of the support member 150 .
  • the light source 160 may be disposed at an edge region of the first support portion 151 , and a middle region of the first support portion 151 is used for connecting and supporting at least one lens assembly 120 .
  • a foam 112 is disposed between the light source 160 and the lens assembly 120 to block the emitted light signal of the light source 160 and other stray light signals.
  • the distance between the light source 160 and the cover plate 110 and the finger above the cover plate 110 is closer, so that the utilization rate of the light signal of the light source can be improved, and the intensity of the light signal after reflection or transmission by the finger can be increased, so as to improve the fingerprint detection effect.
  • the optical fingerprint detection device 100 further includes: a second substrate 161 , the second substrate 161 is disposed below the light source 160 and above the first supporting portion 151 for transmission A control signal is sent to the light source 160 to control the light source 160 to emit light.
  • the second substrate 161 and the first support portion 151 are used to jointly support the light source 160 .
  • the second substrate 161 includes, but is not limited to, a flexible circuit board FPC, one end of which is used for electrical connection with the light source 160 and the other end is used for electrical connection with the first substrate 140 , the second substrate 161 is connected to the first
  • An electrical connection method of the substrate 140 includes, but is not limited to, a Zero Insertion Force (ZIF) connector, a Board To Board (BTB) connector, an Anisotropic Conductive Film (ACF) ) and other electrical connections.
  • ZIF Zero Insertion Force
  • BTB Board To Board
  • ACF Anisotropic Conductive Film
  • a reinforcing plate may also be provided under one side of the second substrate 161 connected to the light source 160 to improve the mechanical strength of the second substrate 161 and the light source 160 .
  • FIG. 8 shows the third support portion 153 in the support member 150 , a part of the adhesive layer 111 connecting the cover plate 110 is located on the third support portion 153 , and the light source 160 is covered by the cover plate 110 above.
  • the third support portion 153 may not be provided, the cover plate 110 does not cover the light source 160 , the adhesive layers 111 connecting the cover plate 110 are all located above the first support portion 151 , and The light source 160 is disposed on the side of the light source 160 close to the lens assembly 120 and is used for connecting the fixed cover plate 110 .
  • FIG. 9 is a schematic cross-sectional structure diagram of the embodiment shown in FIG. 8 along the plane of the XY axis in FIG. 1 .
  • the cross section of the first support portion 151 on the plane of the XY axis is a quadrilateral.
  • the light source 160 may be other than a plurality of LEDs shown in FIG. 6 , it may also be other forms of light sources, such as a line light source, disposed on one side of the edge region of the first support portion 151 .
  • the light source 160 can also be disposed at any position in the edge region of the first support portion 151 . Any position between the edges of the first support portion 151 , that is, any position between the two dotted boxes as shown in FIG. 9 .
  • FIG. 10 and FIG. 11 show two other schematic structural diagrams of the optical fingerprint detection device 100 .
  • the optical fingerprint detection device 100 shown in FIG. 10 and FIG. 11 may be a schematic cross-sectional structure diagram along the plane of the YZ axis in FIG. 1 .
  • the light source 160 is not disposed in the first accommodating area 102 of the outer frame 101 on the side of the electronic device, but is disposed in the second accommodating area 101 in the outer frame 101 of the electronic device
  • the accommodating area 103 other components in the optical fingerprint detection device 100 , including the cover plate 110 , at least one lens assembly 120 , at least one fingerprint sensor 120 , and support members 150 are disposed in the first accommodating area 101 .
  • the embodiment shown in FIG. 10 or FIG. 11 can be used, and the light source 160 is arranged in the second accommodating area 103, which can be flexibly adapted. Match the needs of different electronic devices.
  • the second accommodating area 103 can also be a groove, a through hole or other types of accommodating spaces.
  • the light source 160 may be disposed above the first substrate 140 , and the first substrate 140 is used to support the light source 160 .
  • the first substrate 140 is disposed below the first accommodating area 102 and the second accommodating area 103 .
  • the light source 160 and other components in the optical fingerprint sensor 100 are not disposed in the same accommodating area, they are all disposed above the first substrate 140 to facilitate the installation of the light source 160 without requiring 160 is provided with additional electrical connectors, which facilitates the common control of the light source 160 and the at least one fingerprint sensor 130 while reducing costs.
  • the optical fingerprint detection device 100 further includes: a second substrate 161 , the second substrate 161 is disposed below the light source 160 , and the second substrate 161 and the first substrate 140 can be disposed on the same plane On or close to the same plane, for transmitting control signals to the light source 160 to control the light source 160 to emit light.
  • the second substrate may be a flexible circuit board FPC, and a reinforcing plate 162 may be disposed under the second substrate. The reinforcing plate 162 and the second substrate 161 are used to jointly support the light source 160 .
  • one end of the second substrate 161 is used to connect to the light source 160
  • the other end of the second substrate 161 can be used to connect to other electrical modules of the electronic device to provide power and control signals to the light source 160 .
  • the second substrate 161 and the light source 160 are provided independently from other components of the optical fingerprint detection device 100 . It is convenient to disassemble and maintain the light source 160 .
  • FIG. 8 to FIG. 11 are only to illustrate the position design of the light source 160 .
  • the relevant technical solutions of the fingerprint sensor 130 , the first substrate 140 and the support member 150 may refer to the relevant descriptions in FIGS. 2 to 7 above, and will not be repeated here.
  • the positions of the light sources 160 shown in FIG. 4 to FIG. 11 above are only schematic illustrations. In addition to the positions shown in the above-mentioned embodiments, the light sources 160 may also be arranged in electronic devices. For other positions, the optical element can then guide the light signal emitted by the light source 160 to the finger at the cover plate 110 .
  • the specific position of the light source 160 is not limited in this embodiment of the present application.
  • the cover plate 110 may only support the cover plate, which has no optical imaging function.
  • the cover plate 110 can be multiplexed into an optical imaging element, which is used to perform fingerprint imaging together with the lens assembly 120 .
  • FIG. 12 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • the optical fingerprint detection device 100 shown in FIG. 12 may be a schematic cross-sectional structure diagram along the plane of the XZ axis in FIG. 1 .
  • the cover plate 110 is the first optical imaging element
  • the lens assembly 120 is the second optical imaging element.
  • the light signal of the fingerprint is imaged to the fingerprint sensor 130 for fingerprint detection.
  • the cover plate 110 includes a first optical imaging part
  • the lens assembly 120 includes a second optical imaging part
  • the first optical imaging part is a lens or lens group with negative refractive power
  • the second optical imaging part is A lens or lens group with positive refractive power
  • the first optical imaging part and the second optical imaging part form a lens part, which is used for optical fingerprint imaging.
  • the first optical imaging part is a meniscus negative power lens with a convex surface on the object side (that is, the side close to the finger) and a concave surface on the image side (that is, the side close to the fingerprint sensor), and the second optical The part is a positive power lens with convex surfaces on both the object side (that is, the side close to the finger) and the image side (that is, the side close to the fingerprint sensor).
  • concave or convex surface on the object side here refers to the unevenness of the surface on the object side of the lens along the optical axis direction.
  • the unevenness of the surface in the axial direction refers to the unevenness of the surface on the object side of the lens along the optical axis direction.
  • the first optical imaging part is a first imaging lens 1101
  • the second optical imaging part may include a second imaging lens 1201 and a third imaging lens 1202 .
  • the three imaging lenses 1202 may all be convex lenses.
  • the second optical imaging part can also be implemented by a convex lens instead, for example, only the second imaging lens 1201 or only the third imaging lens 1202 is included, or it can also be realized by a lens group including more lenses
  • the embodiments of the present application do not specifically limit the specific lens structure in the lens assembly 120 .
  • the lenses in the cover plate 110 and the lens assembly 120 may be formed by using transparent materials such as resin or glass, or may also be formed by using other organic or inorganic transparent plastic materials. This is not limited.
  • the cover plate 110 is multiplexed into an optical lens structure in the imaging system, which can reduce the cost of the entire optical fingerprint detection device 100 and compress the optical fingerprint detection device while realizing optical fingerprint imaging.
  • the space occupied by 100 is beneficial to the miniaturization development of the optical fingerprint detection device 100 and the electronic equipment in which it is located.
  • FIG. 13 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • the optical fingerprint detection device 100 shown in FIG. 13 may be a schematic cross-sectional structure diagram along the plane of the YZ axis in FIG. 1 .
  • the cover plate 110 includes a plurality of first optical imaging parts, that is, includes a plurality of first imaging lenses 1101 , and the plurality of first imaging lenses 1101 are connected to each other to form the cover plate 110 the overall structure.
  • the lens assembly 120 includes a plurality of second optical imaging parts.
  • each of the second optical imaging parts in FIG. 13 includes a second imaging lens 1201 and a third imaging lens 1202 .
  • the plurality of first optical imaging parts correspond to the plurality of second optical imaging parts one by one, and a set of one first optical imaging part and one second optical imaging part corresponding to each other forms a lens part 1301 , the cover plate 110 and the lens assembly 120 forms a plurality of lens parts 1301 in total to perform optical fingerprint imaging.
  • the plurality of lens parts 1301 are arranged in one or more rows along the Y-axis direction, and the number of lens parts in each row is one or more.
  • FIG. 12 and FIG. 13 may be a schematic cross-sectional view of the same optical fingerprint detection device 100 along a plane where the XZ axis is located and a schematic cross-sectional view along a plane where the YZ axis is located.
  • the length of the optical fingerprint detection device 100 in the Y-axis direction is greater than the length in the X-axis direction.
  • the length in the Y direction is greater than the length in the X direction.
  • the optical fingerprint detection apparatus 100 includes one fingerprint sensor 130 , and the one fingerprint sensor 130 corresponds to a plurality of lens parts 1301 .
  • the fingerprint sensor 130 includes a plurality of imaging areas. 131.
  • the above-mentioned plurality of lens parts 1301 are arranged above the plurality of imaging areas 131 in a one-to-one correspondence, that is, in the fingerprint sensor 130, each imaging area in the plurality of imaging areas 131 is used to receive a corresponding one of the lens parts.
  • the plurality of lens parts 1301 and the plurality of imaging regions 131 are arranged along the long sides of the side surface of the electronic device.
  • the filter layer 170 is disposed above the fingerprint sensor 130 , it needs to cover all the imaging areas 131 in the fingerprint sensor 130 .
  • a plurality of second imaging lenses 1201 are connected to each other to form an imaging lens array assembly, and similarly, a plurality of third imaging lenses 1202 are connected to each other to form an imaging lens array assembly.
  • the central area thereof may be formed under the action of gravity, thereby affecting its imaging effect.
  • FIG. 14 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • 12 and FIG. 14 may be a schematic cross-sectional view of another optical fingerprint detection device 100 along a plane where the XZ axis is located and a schematic cross-sectional view along the plane where the YZ axis is located.
  • the plurality of second imaging lenses 1201 and the plurality of third imaging lenses 1202 can be disposed separately, and the plurality of second imaging lenses 1201 and the plurality of third imaging lenses 1202 can be fixedly supported by the support member 150 , specifically They can be connected to each other through the first support portion 151 in the support member 150 , and can be fixedly disposed above the first substrate 140 through the second support portion 152 .
  • FIG. 15 shows another schematic structural diagram of the optical fingerprint detection apparatus 100 .
  • FIG. 12 and FIG. 15 are respectively a schematic cross-sectional view of another optical fingerprint detection device 100 along a plane where the XZ axis is located and a schematic cross-sectional view along the plane where the YZ axis is located.
  • the optical fingerprint detection apparatus 100 includes: a plurality of fingerprint sensors 130 .
  • the above-mentioned plurality of lens parts 1301 are disposed above the plurality of fingerprint sensors 130 in a one-to-one correspondence, that is, each fingerprint sensor 130 is used to receive after passing through a corresponding one of the lens parts 1301 light signal.
  • the plurality of lens parts 1301 and the plurality of fingerprint sensors 130 are arranged along the long side of the side surface of the electronic device.
  • the filter layer 170 may include multiple filters or multiple filter layers, the multiple filters or multiple filters The layers are disposed above the plurality of fingerprint sensors 130 in a one-to-one correspondence.
  • the technical solutions shown in FIG. 12 to FIG. 15 above are adopted, the side space of the electronic device is fully utilized, and a long-strip accommodating area is arranged on the side of the electronic device, which can be used along the side of the electronic device.
  • a long-side direction that is, the Y-direction above, a plurality of lens parts are arranged to expand the fingerprint detection area, thereby improving the fingerprint detection effect.
  • the embodiment of the present application further provides an electronic device, and the electronic device may include: the optical fingerprint detection apparatus of any of the above-mentioned embodiments of the application.
  • the electronic device further includes: an accommodating area disposed on the side of the electronic device and a carrier plate disposed at the accommodating area; wherein, the optical fingerprint detection device is fixedly disposed on the carrier plate.
  • the carrier board can be a structural member inside the electronic device, which has a certain mechanical strength and supporting function, and can be arranged inside the accommodating area. On the same plane, the cross-sectional area of the carrier board is smaller than that of the accommodating area.
  • the carrier board can also be disposed on the side of the accommodating area close to the inside of the electronic device, and on the same plane, the cross-sectional area of the carrier board is larger than that of the accommodating area.
  • the carrier board includes, but is not limited to, a mechanical structural member in an electronic device, or may also be an electrical structural member, and the embodiment of the present application does not limit the specific type and specific structure of the carrier board.
  • the disclosed systems and apparatuses may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown 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 also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solutions of the embodiments of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present application are essentially or part of contributions to the prior art, or all or part of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium , including several instructions for causing 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 methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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  • Physics & Mathematics (AREA)
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Abstract

L'invention concerne un appareil de détection optique d'empreintes digitales et un dispositif électronique. La performance de l'appareil de détection optique d'empreintes digitales est assurée, tandis que l'espace occupé de l'appareil de détection optique d'empreintes digitales dans le dispositif électronique est réduit, facilitant ainsi la miniaturisation et la lumière et le développement mince de dispositifs électroniques. Le présent appareil de détection optique d'empreintes digitales est utilisé pour être disposé sur une surface latérale du dispositif électronique, comprenant : une plaque de recouvrement ; un ensemble lentille et un capteur d'empreintes digitales, agencés séquentiellement dans une première direction de la plaque de recouvrement, la première direction pointant vers le côté interne de la surface latérale du dispositif électronique ; un premier substrat, disposé dans une première direction du capteur d'empreintes digitales et utilisé pour supporter le capteur d'empreintes digitales ; un élément de support, de connexion de l'ensemble lentille, la plaque de recouvrement et le premier substrat, et utilisé pour supporter l'ensemble lentille et la plaque de recouvrement dans une seconde direction du capteur d'empreintes digitales, la seconde direction étant orienté vers le côté externe de la surface latérale du dispositif électronique ; une source de lumière, utilisée pour émettre un signal optique vers un doigt au niveau de la plaque de recouvrement. Après avoir été réfléchi ou transmis par le doigt, le signal optique forme un signal optique d'empreintes digitales portant des informations d'empreintes digitales, et l'ensemble lentille est utilisé pour imager le signal optique v au capteur d'empreintes digitales pour une détection d'empreintes digitales.
PCT/CN2020/142597 2020-12-31 2020-12-31 Appareil de détection optique d'empreintes digitales et dispositif électronique WO2022141606A1 (fr)

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CN101419662A (zh) * 2007-10-24 2009-04-29 巫仁杰 指纹输入模组
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CN111931659A (zh) * 2018-08-21 2020-11-13 深圳市汇顶科技股份有限公司 镜头***、指纹识别装置和终端设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5942761A (en) * 1995-06-07 1999-08-24 Tuli; Raja Singh Enhancement methods and devices for reading a fingerprint image
CN101169824A (zh) * 2006-10-25 2008-04-30 原相科技股份有限公司 指纹辨识装置及方法
CN101276406A (zh) * 2007-03-29 2008-10-01 鸿富锦精密工业（深圳）有限公司 指纹识别装置及便携式电子装置
CN101419662A (zh) * 2007-10-24 2009-04-29 巫仁杰 指纹输入模组
CN203909801U (zh) * 2014-05-28 2014-10-29 瑞声光电科技(常州)有限公司 便携式电子设备
CN105787421A (zh) * 2014-12-19 2016-07-20 上海箩箕技术有限公司 指纹识别***
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CN111931659A (zh) * 2018-08-21 2020-11-13 深圳市汇顶科技股份有限公司 镜头***、指纹识别装置和终端设备

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