WO2020083295A1 - 一种用于指纹识别的壳体、电子设备和指纹识别方法 - Google Patents

一种用于指纹识别的壳体、电子设备和指纹识别方法 Download PDF

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Publication number
WO2020083295A1
WO2020083295A1 PCT/CN2019/112595 CN2019112595W WO2020083295A1 WO 2020083295 A1 WO2020083295 A1 WO 2020083295A1 CN 2019112595 W CN2019112595 W CN 2019112595W WO 2020083295 A1 WO2020083295 A1 WO 2020083295A1
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WIPO (PCT)
Prior art keywords
electrodes
electrode
fingerprint
flexible circuit
electronic device
Prior art date
Application number
PCT/CN2019/112595
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English (en)
French (fr)
Inventor
陈平
罗亮
Original Assignee
惠州Tcl移动通信有限公司
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Publication of WO2020083295A1 publication Critical patent/WO2020083295A1/zh

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Classifications

    • 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
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • 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
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1365—Matching; Classification

Definitions

  • the present application relates to the field of fingerprint recognition technology, and in particular to a housing for fingerprint recognition, an electronic device, and a fingerprint recognition method.
  • the fingerprint recognition module of the electronic device is usually set on the cover, side or rear, where a front hole needs to be opened at the cover of the electronic device when the fingerprint recognition module is front-mounted, and the side or rear Open holes in the middle frame or rear shell.
  • the inventor of the present application found that in the above-mentioned technology, when opening holes in the cover plate, the middle frame or the rear case, a process is added, resulting in an increase in cost and a tendency to cause a decrease in product yield.
  • the overall strength of the electronic device will also decrease, and its waterproof and dustproof performance will decrease.
  • the fingerprint module can only be placed at a specific position, which is not conducive to the design of the internal structure of the electronic device.
  • the present application provides a case for fingerprint identification, an electronic device, and a fingerprint identification method, which can avoid openings in the case of the electronic device, the process is simple and easy to implement, can improve the waterproof and dustproof performance, and make the case The appearance is more beautiful.
  • a technical solution adopted by the present application is to provide a housing for fingerprint identification, the housing includes: a cover plate; an electrode area provided on the cover plate, and the electrode area includes a plurality of first electrodes And a plurality of second electrodes, the first electrode and the second electrode intersect perpendicularly to form a plurality of capacitance nodes, wherein, when a finger performs a touch operation on the electrode area, the capacitance node generates a capacitance value.
  • the plurality of first electrodes are spaced apart and distributed in parallel, and the plurality of second electrodes are spaced apart and distributed in parallel.
  • the distance between two adjacent first electrodes is less than or equal to the distance between adjacent ridges and valleys in the fingerprint corresponding to the finger; the distance between two adjacent second electrodes is less than or equal to the finger The distance between adjacent ridges and valleys in a fingerprint.
  • the material of the first electrode and the material of the second electrode are at least one of metal mesh, silver paste, graphene, carbon nanotube or conductive polymer material.
  • one of the first electrode and the second electrode is a driving electrode and the other is a sensing electrode.
  • the distance between two adjacent first electrodes is less than or equal to 40-325 ⁇ m.
  • the distance between two adjacent first electrodes is not less than the width of the first electrode.
  • the distance between two adjacent second electrodes is not less than the width of the second electrode.
  • the cover plate includes a display area and a non-display area provided around the display area, and the electrode area is provided on the non-display area of the cover plate.
  • the cover plate is a transparent glass plate or a transparent plastic plate.
  • an electronic device the electronic device includes a housing, a flexible circuit board and a main board; the housing includes a cover plate and an electrode area provided on the cover plate, the electrode The area includes a plurality of first electrodes and a plurality of second electrodes, the first electrode and the second electrode intersect perpendicularly to form a plurality of capacitance nodes, wherein, when a finger contacts the capacitance node, the capacitance node generates a capacitance value; the plurality of first electrodes The electrode and the plurality of second electrodes are connected to the main board through a flexible circuit board.
  • the multiple first electrodes are connected to the first flexible circuit part of the flexible circuit board through the first leads; the multiple second electrodes are connected to the second flexible circuit part of the flexible circuit board through the second leads.
  • the plurality of first electrodes are connected to the first flexible circuit part of the flexible circuit board through conductive glue; the plurality of second electrodes are connected to the second flexible circuit part of the flexible circuit board through conductive glue.
  • the plurality of first electrodes are spaced apart and distributed in parallel, and the plurality of second electrodes are spaced apart and distributed in parallel.
  • the material of the first electrode and the material of the second electrode are at least one of metal mesh, silver paste, graphene, carbon nanotube or conductive polymer material.
  • a fingerprint recognition chip is provided on the main board, and a plurality of first electrodes and a plurality of second electrodes are connected to the fingerprint recognition chip on the main board through a flexible circuit board.
  • the main board is provided with a processor that can support fingerprint data processing, and multiple first electrodes and multiple second electrodes are connected to the processor on the main board that can support fingerprint data processing through a flexible circuit board.
  • a fingerprint identification method which is suitable for electronic equipment, which includes a casing, a flexible circuit board, and a main board;
  • the casing includes a cover plate and a cover plate
  • the electrode area on the top, the electrode area includes a plurality of first electrodes and a plurality of second electrodes, the first electrode and the second electrode intersect perpendicularly to form a plurality of capacitance nodes, wherein, when a finger contacts the capacitance node, the capacitance node generates a capacitance Value; multiple first electrodes and multiple second electrodes are connected to the main board through the flexible circuit board;
  • the fingerprint recognition method includes: acquiring the capacitance value of the capacitance node on the electrode area, wherein, when a finger touches the electrode area, the capacitance node The capacitance value of the capacitor has changed; the capacitance value of the capacitor node is sent to the main board through the flexible circuit board; the capacitance value is collected
  • the fingerprint recognition method further includes: determining whether the electronic device is currently in a preset security state; if the electronic device is currently in In the preset security state, the motherboard determines whether the fingerprint image matches at least one preset fingerprint information in the preset fingerprint information library.
  • the fingerprint recognition method further includes: when the fingerprint image matches at least one preset fingerprint in the preset fingerprint information library When the information matches, it is determined that the user has the operation authority of the electronic device.
  • an electrode area is provided on the cover plate, and the electrode area includes a plurality of first electrodes and a plurality of second electrodes. Vertically intersect to form a plurality of capacitance nodes, and the capacitance value generated when a finger performs a touch operation on the electrode area can be used to obtain a fingerprint image corresponding to the finger, thereby implementing fingerprint recognition.
  • the application can avoid opening holes in the shell of the electronic device, the process is simple and easy to implement, effectively reduce the production cost, can improve the waterproof and dustproof performance, and make the appearance of the shell more beautiful.
  • the placement position of the fingerprint module is no longer limited to the position of the through hole, it is beneficial to the design of the internal structure of the electronic device.
  • FIG. 1 is a schematic structural diagram of an embodiment of a housing for fingerprint identification of this application
  • FIG. 2 is a partial schematic view of the electrode area in FIG. 1;
  • FIG. 3 is a partial structural schematic diagram of an embodiment of an electronic device of the present application.
  • FIG. 4 is a partial structural schematic diagram of another embodiment of the electronic device of the present application.
  • FIG. 5 is a schematic flowchart of an embodiment of a fingerprint identification method of this application.
  • FIG. 6 is a schematic flowchart of another embodiment of the fingerprint identification method of this application.
  • FIG. 7 is a schematic structural diagram of an embodiment of a device with a storage function according to the present application.
  • FIG. 1 is a structural schematic diagram of an embodiment of a housing for fingerprint identification of the present application
  • FIG. 2 is a partial structural schematic diagram of an electrode area in FIG.
  • the housing 10 for fingerprint identification includes a cover plate 11 and an electrode area 12 provided on the cover plate 11.
  • the electrode area 12 includes a plurality of first electrodes 121 and a plurality of second electrodes 122.
  • the first electrodes 121 and the second electrodes 122 intersect perpendicularly to form a plurality of capacitance nodes.
  • the capacitance node When a finger performs a touch operation on the electrode area 12, The capacitance node generates a capacitance value.
  • the electronic device (not shown) includes a device body (not shown) and a cover plate 11, and the cover plate 11 is placed on the device body.
  • the cover plate 11 may be a front cover plate 11 of an electronic device, which is stacked above the display panel of the electronic device and is used to protect the display panel.
  • the cover plate 11 can also be of different colors, thereby increasing the appearance effect of the electronic device.
  • the cover plate 11 can also be a rear cover plate 11 for protecting the internal components of the electronic device and can increase the appearance effect of the electronic device.
  • the front cover plate 11 When the cover plate 11 is used as the front cover plate 11 of the electronic device, the front cover plate 11 may be a transparent glass plate or a transparent plastic plate.
  • the transparent plastic board may be an acrylic board (PMMA) or a polycarbonate plastic (PC) board.
  • the front cover 11 includes a display area 101 and a non-display area 102 disposed adjacent to the display area 101, and the non-display area 102 is disposed around the display area 101, and the non-display area 102 is located at the edge of the front cover 11.
  • the electrode area 12 is provided on the non-display area 102 of the front cover 11.
  • the cover 11 can be used as the back cover 11 of the electronic device. Since the rear cover 11 does not need to display images, the rear cover 11 does not include the display area 101 and the non-display area 102, that is, the electrode area 12 may be provided in the entire area or any area of the rear cover 11.
  • a plurality of first electrodes 121 and a plurality of second electrodes 122 that vertically cross each other can be prepared on the cover plate 11 along the X-axis direction and the Y-axis direction by a coating process, one of the first electrode 121 and the second electrode 122 It can be used as a driving electrode and the other can be used as a sensing electrode.
  • the first electrode 121 can be used as a sensing electrode
  • the second electrode 122 can be used as a driving electrode.
  • the first electrode 121 and the second electrode 122 may be electrically insulated from each other.
  • a plurality of first electrodes 121 may be located on the first surface of the cover plate 11, and a plurality of second electrodes 122 may be located on the cover plate 11 On the second surface.
  • the first electrode 121 and the second electrode 122 perpendicularly intersect to form a plurality of capacitance nodes, wherein, when a finger performs a touch operation on the electrode area 12, the capacitance node will generate a capacitance value, by setting the first electrode 121 in the electrode area 12
  • the second electrode 122 can be used to sense the touch operation performed by the finger on the electrode area 12.
  • Both the first electrode 121 and the second electrode 122 are made of a conductive material, wherein the material of the first electrode 121 and the material of the second electrode 122 may be a metal grid, silver paste, graphene, carbon nanotubes or conductive polymer At least one of the materials.
  • the first electrode 121 and the second electrode 122 in this application may be made of silver paste, graphene, carbon nanotubes, or conductive polymer materials through an etching process or a coating process or a laser process; they may also be transferred through heat transfer
  • the groove is formed by printing, and then the groove is filled with a metal mesh material formed by silver paste; it can also be made of a conductive plating layer through a yellow light process. No limitation here.
  • an electrode region 12 is provided on the cover plate 11.
  • the electrode region 12 includes a plurality of first electrodes 121 and a plurality of second electrodes 122.
  • the first electrode 121 and the second electrode 122 vertically intersect to form a plurality of capacitance nodes, and the capacitance value generated when the finger is used to touch the electrode area 12 can be used to obtain a fingerprint image corresponding to the finger, thereby implementing fingerprint recognition.
  • the application can avoid opening holes in the casing 10 of the electronic device, the process is simple and easy to implement, effectively reduce the production cost, can improve the waterproof and dustproof performance, and make the appearance of the casing 10 more beautiful.
  • the placement position of the fingerprint module is no longer limited to the position of the through hole, it is beneficial to the design of the internal structure of the electronic device.
  • the plurality of first electrodes 121 are spaced apart and distributed in parallel, and the plurality of second electrodes 122 are spaced apart and distributed in parallel.
  • a certain first safety distance may be maintained between the plurality of first electrodes 121, and a certain second safety distance may be maintained between the plurality of second electrodes 122.
  • the first safety distance may be the first electrode 121
  • the width of the second safety distance may be the width of the second electrode 122.
  • the spacing between two adjacent first electrodes 121 is less than or equal to the spacing between adjacent ridges and valleys in the fingerprint corresponding to the finger; between two adjacent second electrodes 122 The spacing is less than or equal to the spacing between adjacent ridges and valleys in the fingerprint corresponding to the finger.
  • the housing for fingerprint identification uses the principle of self-capacitance.
  • the housing for fingerprint identification uses the principle of self-capacitance.
  • each point on the skin surface is at a distance
  • the distance between one electrode 121 and / or the second electrode 122 is also different, thereby affecting the capacitance value generated by the capacitance node.
  • a two-dimensional fingerprint pattern composed of ridges and valleys corresponding to the finger can be detected, thereby realizing fingerprint recognition .
  • the denser the first electrodes 121 and / or the second electrodes 122 are, the better the fingerprint identification.
  • the distance between valleys and valleys in a finger fingerprint is generally between 300-650 ⁇ m, that is, the distance between adjacent ridges and valleys in the fingerprint is generally between 150-325 ⁇ m.
  • the spacing between two adjacent first electrodes 121 can be less than or equal to 40-325 ⁇ m, for example, 40 ⁇ m, 50 ⁇ m, 80 ⁇ m, 150 ⁇ m, 325 ⁇ m; the spacing between two adjacent first electrodes 121 can be less than Or equal to 40-325 ⁇ m, for example, 40 ⁇ m, 50 ⁇ m, 80 ⁇ m, 150 ⁇ m, 325 ⁇ m.
  • FIG. 3 is a partial structural schematic diagram of an embodiment of an electronic device of the present application.
  • the present application also provides an electronic device 30, which may be a smart phone, a personal computer (PC), a tablet computer, or a personal digital assistant (personal digital assistant (PDA), mobile Internet device (MID) and other electronic devices 30.
  • the electronic device 30 includes a housing 10, a flexible circuit board 13 and a main board 14.
  • the case 10 includes a cover plate 11 and an electrode area 12 provided on the cover plate 11.
  • the electrode area 12 includes a plurality of first electrodes 121 and a plurality of second electrodes 122.
  • the first electrodes 121 and the second electrodes 122 intersect perpendicularly to form A plurality of capacitance nodes, wherein, when a finger contacts the capacitance node, the capacitance node generates a capacitance value; a plurality of first electrodes 121 and a plurality of second electrodes 122 are connected to the main board 14 through the flexible circuit board 13.
  • the plurality of first electrodes 121 and the plurality of second electrodes 122 may be connected to a fingerprint recognition chip on the main board 14 or a processor on the main board 14 that can support fingerprint data processing through the flexible circuit board 13.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • the foregoing processor may be a general-purpose processor, including a central processor (Central Processing Unit (CPU), network processor (Network Processor, NP), etc .; can also be a digital signal processor (DSP), application specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices , Discrete gates or transistor logic devices, discrete hardware components.
  • the disclosed methods, steps, and logical block diagrams in the embodiments of the present invention may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the fingerprint identification chip or a processor that can support fingerprint data processing collects the capacitance value of the capacitance node, and analyzes the difference in capacitance value generated by each capacitance node at each moment, which can be A two-dimensional fingerprint image composed of ridges and valleys of the corresponding finger is detected. Further, the fingerprint identification chip or processor can match the two-dimensional fingerprint image, so that the electronic device 30 can unlock, pay online, or record attendance.
  • the housing 10 is the housing 10 for fingerprint identification in the above-mentioned embodiment, which will not be repeated here.
  • the electronic device 30 of this embodiment is provided with an electrode area 12 on the cover 1111, the electrode area 12 includes a plurality of first electrodes 121 and a plurality of second electrodes 122, the first electrode 121
  • the second electrode 122 intersects perpendicularly to form a plurality of capacitance nodes, and the capacitance value generated when the finger performs touch operation on the electrode area 12 can be used to obtain a fingerprint image corresponding to the finger, thereby implementing fingerprint recognition.
  • the present application can avoid opening holes in the housing 10 of the electronic device 30, the process is simple and easy to implement, effectively reduce the production cost, can improve the waterproof and dustproof performance, and make the appearance of the housing 10 more beautiful.
  • the placement position of the fingerprint module is no longer limited to the position of the through hole, it is advantageous for the internal structure design of the electronic device 30.
  • FIG. 4 is a partial structural schematic diagram of another embodiment of an electronic device of the present application.
  • the plurality of first electrodes 121 are connected to the first flexible circuit portion 131 of the flexible circuit board 13 through first leads (not shown); the plurality of second electrodes 122 are connected to the flexible circuit board through second leads (not shown)
  • the second flexible circuit portion 132 of 13 is connected.
  • the flexible circuit board 13 includes a first flexible circuit part 131 and a second flexible circuit part 132.
  • One end of the first lead is connected to the plurality of first electrodes 121, and the other end is bound and connected to the first flexible circuit part 131, thereby achieving electrical connection between the plurality of first electrodes 121 and the first flexible circuit part 131;
  • One end is connected to the plurality of second electrodes 122, and the other end is bound and connected to the second flexible circuit portion 132, thereby achieving electrical connection between the plurality of second electrodes 122 and the second flexible circuit portion 132.
  • the plurality of first electrodes 121 are connected to the first flexible circuit portion 131 of the flexible circuit board 13 through conductive glue; the plurality of second electrodes 122 are connected to the second flexible circuit portion 132 of the flexible circuit board 13 through conductive glue connection.
  • the plurality of first electrodes 121 includes a first binding area (not shown in the figure), and an AFC glue (not shown in the figure) may be attached to the pad of the first binding area by a applicator to form an AFC
  • the adhesive layer further aligns the first flexible circuit part 131 with the pad and performs heat pressing treatment, so that the plurality of first electrodes 121 are connected to the first flexible circuit part 131 of the flexible circuit board 13 through the conductive adhesive.
  • the plurality of second electrodes 122 includes a second binding area (not shown in the figure), and an AFC adhesive may be attached to the pad of the second binding area by the applicator to form an AFC adhesive layer, and then the The two flexible circuit parts 132 are aligned with the pads one by one and subjected to hot pressing treatment, so that the plurality of second electrodes 122 are connected to the second flexible circuit parts 132 of the flexible circuit board 13 through conductive glue.
  • FIG. 5 is a schematic flowchart of an embodiment of a fingerprint identification method of the present application.
  • the present application also provides a fingerprint recognition method, which is suitable for the above-mentioned electronic device.
  • the fingerprint recognition method includes the following steps:
  • each capacitance node generates a capacitance value
  • the electronic device detects the capacitance value of each capacitance node on the touch screen in real time.
  • a preset threshold of capacitance can be set in this application. When the capacitance value is greater than or equal to the preset threshold of capacitance, it is determined that the finger performs touch operation on the electrode area, and then step S12 is entered.
  • S12 Send the capacitance value of the capacitance node to the main board through the flexible circuit board.
  • the plurality of first electrodes and the plurality of second electrodes may be connected to a fingerprint recognition chip on the main board through a flexible circuit board or a processor (Central Processing Unit, CPU).
  • the touch operation of the user can be detected through the capacitance node on the electrode area, and the capacitance value of the capacitance node is sent to the main board through the flexible circuit board.
  • S13 Collect the capacitance value through the main board, and obtain the fingerprint image corresponding to the finger according to the capacitance value.
  • the plurality of first electrodes and the plurality of second electrodes may be connected to a fingerprint recognition chip on the main board through a flexible circuit board or a processor on the main board that can support fingerprint data processing.
  • the fingerprint identification chip or a processor that can support fingerprint data processing collects the capacitance value of the capacitance node, and analyzes the difference in capacitance value generated by each capacitance node at each moment, which can be detected A two-dimensional fingerprint image composed of ridges and valleys corresponding to the finger is generated.
  • S14 Determine whether the fingerprint image matches at least one preset fingerprint information in the preset fingerprint information library through the main board.
  • the preset fingerprint information database includes fingerprints of users who have operation authority on the electronic device.
  • the fingerprint recognition chip on the motherboard or the processor connected to the motherboard can compare the two-dimensional fingerprint image with the preset fingerprint information in the preset fingerprint information library to determine whether the fingerprint image is at least one of the preset fingerprint information library.
  • the preset fingerprint information may be a fingerprint feature point, for example, a break point, a bifurcation point, or a turning point often appear in the fingerprint pattern; the preset fingerprint information may also be the overall fingerprint feature, and the overall fingerprint feature may be a fingerprint pattern (eg, ring shape, bow shape) And spiral), number of lines, etc., not limited here.
  • an electrode area is provided on the cover plate, and the electrode area includes a plurality of first electrodes and a plurality of second electrodes.
  • the first electrode and the second electrode intersect perpendicularly to form a plurality of
  • the capacitance node can use the capacitance value generated when a finger performs a touch operation on the electrode area to obtain a fingerprint image corresponding to the finger, thereby implementing fingerprint recognition.
  • FIG. 6 is a schematic flowchart of an embodiment of a fingerprint identification method of the present application. Before step S14, the fingerprint identification method further includes the following steps:
  • the electronic device can detect and determine whether the electronic device is currently in a preset security state. For example, when a user attempts to make an online payment through fingerprint recognition, it can detect and determine whether the operating system platform of the electronic device, payment software corresponding to the payment scenario, or the network currently accessed by the electronic device is safe. When the operating system platform, payment software, or the network currently connected to the electronic device is not secure, it is determined that the electronic device is not currently in a preset security state.
  • the motherboard determines whether the fingerprint image matches at least one preset fingerprint information in the preset fingerprint information library.
  • the mainboard determines whether the fingerprint image matches at least one preset fingerprint information in the preset fingerprint information library.
  • the fingerprint recognition method further includes the following step: when the fingerprint image matches at least one preset fingerprint information in the preset fingerprint information library, it is determined that the user has the operation authority of the electronic device.
  • the electronic device when the fingerprint image matches at least one preset fingerprint information in the preset fingerprint information library, it can be determined that the user has the operation authority of the electronic device, for example, the electronic device is controlled to unlock and enter a working state with user authority , Or control the electronic device for online payment, or control the electronic device for attendance records, which is not limited here.
  • FIG. 7 is a schematic structural diagram of an embodiment of a device with a storage function according to the present application.
  • the device 70 with a storage function stores at least one program 71 or instruction.
  • the program 71 or instruction is used to execute as shown in the above embodiment Fingerprint identification method.
  • the device 70 with a storage function may be, but not limited to, a U disk, an SD card, a PD optical drive, a mobile hard disk, a large-capacity floppy drive, a flash memory, a multimedia memory card, etc., or a server.
  • the apparatus 70 of this embodiment may perform the steps in the above method. For a detailed description of related content, please refer to the above method section, which will not be repeated here.

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Abstract

本申请公开了一种用于指纹识别的壳体、电子设备和指纹识别方法，该壳体包括：盖板；设置在盖板上的电极区，电极区包括多个第一电极和多个第二电极，第一电极与第二电极垂直相交以形成多个电容节点，其中，在手指对电极区进行触控操作时，电容节点产生一电容值。

Description

一种用于指纹识别的壳体、电子设备和指纹识别方法
本申请要求于2018年10月23日提交中国专利局、申请号为201811234779.8、发明名称为“一种用于指纹识别的壳体、电子设备和指纹识别方法”的这个专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及指纹识别技术领域，特别是涉及一种用于指纹识别的壳体、电子设备和指纹识别方法。
 背景技术
目前电子设备的指纹识别模组通常为盖置、侧边或后置设置，其中，指纹识别模组前置时需要在电子设备的盖板处开设一通孔，而侧边设置或后置则需要在中框或后壳开孔。
本申请的发明人在长期的研发过程中，发现上述技术中，在盖板、中框或后壳开设通孔时会增加工序，造成成本上升，且容易导致产品良率下降。同时，由于通孔的存在，电子设备的整体强度也会下降，且其防水防尘性能下降。同时，由于通孔位置的局限性，只能在特定位置放置指纹模组，不利于电子设备的内部结构设计。
 技术问题
本申请提供了一种用于指纹识别的壳体、电子设备和指纹识别方法，能够避免在电子设备的壳体上开孔，工艺简单易实现，能够提高防水防尘性能，并使壳体的外形更为美观。
 技术解决方案
为解决上述技术问题，本申请采用的一个技术方案是：提供一种用于指纹识别的壳体，壳体包括：盖板；设置在盖板上的电极区，电极区包括多个第一电极和多个第二电极，第一电极与第二电极垂直相交以形成多个电容节点，其中，在手指对电极区进行触控操作时，电容节点产生一电容值。
其中，多个第一电极呈相互间隔且平行分布，多个第二电极呈相互间隔且平行分布。
其中，相邻的两个第一电极之间的间距小于或等于手指对应的指纹中相邻的脊与谷之间的间距；相邻的两个第二电极之间的间距小于或等于手指对应的指纹中相邻的脊与谷之间的间距。
其中，第一电极的材料和第二电极的材料为金属网格、银浆、石墨烯、碳纳米管或导电高分子材料中的至少一种。
其中，第一电极和第二电极中的一个为驱动电极且另一个为感应电极。
其中，相邻的两个第一电极之间的间距小于或等于40-325μm。
其中，相邻的两个第一电极之间的间距不小于第一电极的宽度。
其中，相邻的两个第二电极之间的间距不小于第二电极的宽度。
其中，盖板包括显示区以及围绕显示区设置的非显示区，电极区设置在盖板的非显示区上。
其中，盖板为透明玻璃板或透明塑料板。
为解决上述技术问题，本申请采用的另一个技术方案是：提供一种电子设备，电子设备包括壳体、柔性电路板以及主板；壳体包括盖板以及设置在盖板上的电极区，电极区包括多个第一电极和多个第二电极，第一电极与第二电极垂直相交以形成多个电容节点，其中，在手指接触电容节点时，电容节点产生一电容值；多个第一电极和多个第二电极通过柔性电路板连接主板。
其中，多个第一电极通过第一引线与柔性电路板的第一柔性电路部分连接；多个第二电极通过第二引线与柔性电路板的第二柔性电路部分连接。
其中，多个第一电极通过导电胶与柔性电路板的第一柔性电路部分连接；多个第二电极通过导电胶与柔性电路板的第二柔性电路部分连接。
其中，多个第一电极呈相互间隔且平行分布，多个第二电极呈相互间隔且平行分布。
其中，第一电极的材料和第二电极的材料为金属网格、银浆、石墨烯、碳纳米管或导电高分子材料中的至少一种。
其中，主板上设置有指纹识别芯片，多个第一电极和多个第二电极通过柔性电路板连接主板上的指纹识别芯片。
其中，主板上设置有可支持指纹数据处理的处理器，多个第一电极和多个第二电极通过柔性电路板连接主板上的可支持指纹数据处理的处理器。
为解决上述技术问题，本申请采用的又一个技术方案是：提供一种指纹识别方法，适用于电子设备，电子设备包括壳体、柔性电路板以及主板；壳体包括盖板以及设置在盖板上的电极区，电极区包括多个第一电极和多个第二电极，第一电极与第二电极垂直相交以形成多个电容节点，其中，在手指接触电容节点时，电容节点产生一电容值；多个第一电极和多个第二电极通过柔性电路板连接主板；指纹识别方法包括：获取电极区上电容节点的电容值，其中，在手指对电极区进行触控操作时，电容节点的电容值发生变化；将电容节点的电容值通过柔性电路板发送给主板；通过主板采集电容值，并根据电容值得到手指对应的指纹图像；通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
其中，在通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配步骤之前，指纹识别方法进一步包括：判断电子设备当前是否处于预设安全状态；若电子设备当前处于预设安全状态，则通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
其中，在通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配步骤之后，指纹识别方法进一步包括：当指纹图像与预设指纹信息库中的至少一个预设指纹信息相匹配时，则确定用户具有电子设备的操作权限。
 有益效果
本申请的有益效果是：区别于现有技术的情况，本申请通过在盖板上设置一电极区，该电极区包括多个第一电极和多个第二电极，第一电极与第二电极垂直相交以形成多个电容节点，能够利用手指对该电极区进行触控操作时产生的电容值，得到手指对应的指纹图像，进而实现指纹识别。本申请能够避免在电子设备的壳体上开孔，工艺简单易实现，有效降低生产成本，能够提高防水防尘性能，并使壳体的外形更为美观。同时，由于指纹模组的放置位置不再受限于通孔的位置，有利于电子设备的内部结构设计。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是本申请用于指纹识别的壳体一实施方式的结构示意图；
图2是图1中电极区的局部结构示意图；
图3是本申请电子设备一实施方式的局部结构示意图；
图4是本申请电子设备另一实施方式的局部结构示意图；
图5是本申请指纹识别方法一实施方式的流程示意图；
图6是本申请指纹识别方法另一实施方式的流程示意图；
图7是本申请具有存储功能的装置一实施方式的结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本实用新型的技术领域的技术人员通常理解的含义相同。本文中在本实用新型的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本实用新型。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
参阅图1-图2，图1是本申请用于指纹识别的壳体一实施方式的结构示意图，图2是图1中电极区的局部结构示意图。该用于指纹识别的壳体10包括：盖板11；设置在盖板11上的电极区12。电极区12包括多个第一电极121和多个第二电极122，第一电极121与第二电极122垂直相交以形成多个电容节点，其中，在手指对电极区12进行触控操作时，电容节点产生一电容值。
具体的，电子设备（图未示出）包括设备本体（图未示出）及盖板11，盖板11盖设于设备本体上。盖板11可以为电子设备的前盖板11，层叠于电子设备的显示面板上方，用于对显示面板进行保护。并且，盖板11还可以为不同的颜色，进而增加电子设备的外观效果。盖板11还可以为后盖板11，用于保护电子设备的内部各元件，并能增加电子设备的外观效果。
在盖板11作为电子设备的前盖板11时，前盖板11可以为透明玻璃板或透明塑料板。其中，透明塑料板可以为亚克力板(PMMA)或者聚碳酸酯塑料(PC)板。本实施方式中，前盖板11包括显示区101及与显示区101相邻设置的非显示区102，且非显示区102围绕显示区101设置，非显示区102位于前盖板11的边缘。电极区12设置在前盖板11的非显示区102上。
在其他实施方式中，盖板11可以作为电子设备的后盖板11。由于后盖板11不需要进行画面显示，因此后盖板11不包括显示区101和非显示区102，即电极区12可以设置在后盖板11的全部区域或任一区域。
可以通过镀膜工艺在盖板11上沿X轴方向和Y轴方向分别制备两层垂直交叉的多个第一电极121和多个第二电极122，第一电极121与第二电极122中的一个可作为驱动电极且另一个可作为感应电极，例如，第一电极121可以作为感应电极，第二电极122可以作为驱动电极。进一步地，第一电极121与第二电极122之间可以相互电性绝缘，例如，多个第一电极121可以位于盖板11的第一表面上，多个第二电极122可以位于盖板11的第二表面上。
第一电极121与第二电极122垂直相交以形成多个电容节点，其中，在手指对电极区12进行触控操作时，电容节点将产生一电容值，通过在电极区12设置第一电极121与第二电极122，可以用以感应手指对电极区12进行的触控操作。
第一电极121与第二电极122均由导电材料制成，其中，第一电极121的材料和第二电极122的材料可以为金属网格、银浆、石墨烯、碳纳米管或导电高分子材料中的至少一种。例如，本申请中的第一电极121与第二电极122可以由银浆、石墨烯、碳纳米管或导电高分子材料等通过蚀刻工艺或者涂布工艺或者镭射工艺制成；也可以通过热转印形成凹槽，然后在凹槽里面填充银浆形成的金属网格材料制成；也可以由导电镀层经过黄光工艺制成。在此不做限定。
区别于现有技术的情况，本实施方式通过在盖板11上设置一电极区12，该电极区12包括多个第一电极121和多个第二电极122，第一电极121与第二电极122垂直相交以形成多个电容节点，能够利用手指对该电极区12进行触控操作时产生的电容值，得到手指对应的指纹图像，进而实现指纹识别。本申请能够避免在电子设备的壳体10上开孔，工艺简单易实现，有效降低生产成本，能够提高防水防尘性能，并使壳体10的外形更为美观。同时，由于指纹模组的放置位置不再受限于通孔的位置，有利于电子设备的内部结构设计。
在一实施方式中，多个第一电极121呈相互间隔且平行分布，多个第二电极122呈相互间隔且平行分布。
具体的，多个第一电极121之间可以保持一定的第一安全距离，多个第二电极122之间可以保持一定的第二安全距离，例如，该第一安全距离可以为第一电极121的宽度，该第二安全距离可以为第二电极122的宽度。
在一实施方式中，相邻的两个第一电极121之间的间距小于或等于手指对应的指纹中相邻的脊与谷之间的间距；相邻的两个第二电极122之间的间距小于或等于手指对应的指纹中相邻的脊与谷之间的间距。
具体的，本申请提供的用于指纹识别的壳体利用自电容的原理，在有用户手指靠近电极区12时，由于手指皮肤表面具有凹凸不平的脊和谷，因此皮肤表面各点距离各第一电极121和/或第二电极122的远近也不同，从而影响了电容节点产生的电容值。通过检测在手指对电极区12进行触控操作的过程中，每个时刻各电容节点产生的电容值大小差异，就可以检测出对应手指由脊和谷构成的指纹二维图样，从而实现指纹识别。需要注意的是，各第一电极121之间和/或各第二电极122之间越密越利于指纹识别。其中，已知手指指纹中谷与谷之间的间距一般在300-650μm之间，即指纹中相邻的脊与谷之间的间距一般在150-325μm之间。因此，相邻的两个第一电极121之间的间距可以小于或等于40-325μm，例如，40μm、50μm、80μm、150μm、325μm；相邻的两个第一电极121之间的间距可以小于或等于40-325μm，例如，40μm、50μm、80μm、150μm、325μm。
参阅图3，图3是本申请电子设备一实施方式的局部结构示意图。本申请还提供一种电子设备30，电子设备30可以为智能手机、个人电脑(personal computer，PC)、平板电脑、个人数字助理(personal digital assistant，PDA)、移动上网设备(mobile Internet device，MID)等电子设备30。电子设备30包括壳体10、柔性电路板13以及主板14。壳体10包括盖板11以及设置在盖板11上的电极区12，电极区12包括多个第一电极121和多个第二电极122，第一电极121与第二电极122垂直相交以形成多个电容节点，其中，在手指接触电容节点时，电容节点产生一电容值；多个第一电极121和多个第二电极122通过柔性电路板13连接主板14。
具体的，多个第一电极121和多个第二电极122可以通过柔性电路板13连接到主板14上的指纹识别芯片或连接到主板14上的可支持指纹数据处理的处理器。处理器可以是一种集成电路芯片，具有信号的处理能力。上述的处理器可以是通用处理器，包括中央处理器(Central Processing Unit，CPU)、网络处理器(Network Processor，NP)等；还可以是数字信号处理器(DSP))、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
当手指按压对电极区12进行触控操作时，指纹识别芯片或可支持指纹数据处理的处理器采集电容节点的电容值，并分析每个时刻各电容节点产生的电容值大小差异，由此可以检测出对应手指由脊和谷构成的二维指纹图像。进一步地，指纹识别芯片或处理器可以对该二维指纹图像进行匹配，以便电子设备30进行解锁、在线支付或考勤记录等。其中，壳体10为上述实施方式中的用于指纹识别的壳体10，在此不再赘述。
区别于现有技术的情况，本实施方式的电子设备30通过在盖板1111上设置一电极区12，该电极区12包括多个第一电极121和多个第二电极122，第一电极121与第二电极122垂直相交以形成多个电容节点，能够利用手指对该电极区12进行触控操作时产生的电容值，得到手指对应的指纹图像，进而实现指纹识别。本申请能够避免在电子设备30的壳体10上开孔，工艺简单易实现，有效降低生产成本，能够提高防水防尘性能，并使壳体10的外形更为美观。同时，由于指纹模组的放置位置不再受限于通孔的位置，有利于电子设备30的内部结构设计。
参阅图4，图4是本申请电子设备另一实施方式的局部结构示意图。多个第一电极121通过第一引线（图未示出）与柔性电路板13的第一柔性电路部分131连接；多个第二电极122通过第二引线（图未示出）与柔性电路板13的第二柔性电路部分132连接。
具体的，该柔性电路板13包括第一柔性电路部分131和第二柔性电路部分132。第一引线的一端与多个第一电极121连接，另一端与第一柔性电路部分131绑定连接，进而实现多个第一电极121与第一柔性电路部分131的电连接；第二引线的一端与多个第二电极122连接，另一端与第二柔性电路部分132绑定连接，进而实现多个第二电极122与第二柔性电路部分132的电连接。
在一实施方式中，多个第一电极121通过导电胶与柔性电路板13的第一柔性电路部分131连接；多个第二电极122通过导电胶与柔性电路板13的第二柔性电路部分132连接。
具体的，多个第一电极121包括第一绑定区（图未示出），可以通过贴服机在第一绑定区的焊盘上贴附AFC胶（图未示出），形成AFC胶层，再将第一柔性电路部分131与焊盘一一对位并进行热压处理，进而使多个第一电极121通过导电胶与柔性电路板13的第一柔性电路部分131连接。同样的，多个第二电极122包括第二绑定区（图未示出），可以通过贴服机在第二绑定区的焊盘上贴附AFC胶，形成AFC胶层，再将第二柔性电路部分132与焊盘一一对位并进行热压处理，进而使多个第二电极122通过导电胶与柔性电路板13的第二柔性电路部分132连接。
参阅图5，图5是本申请指纹识别方法一实施方式的流程示意图。本申请还提供一种指纹识别方法，该指纹识别方法适用于上述的电子设备，该指纹识别方法包括以下步骤：
S11：获取电极区上电容节点的电容值。其中，在手指对电极区进行触控操作时，电容节点的电容值发生变化。
具体的，如前文已述，在手指对电极区进行触控操作的过程中，各电容节点会产生一电容值，电子设备实时检测触摸屏上各电容节点的电容值。为了避免用户误操作，本申请可以设置一电容预设阈值，当电容值大于或等于该电容预设阈值时，确定手指对电极区进行触控操作，则进入步骤S12。
S12：将电容节点的电容值通过柔性电路板发送给主板。
具体的，多个第一电极和多个第二电极可以通过柔性电路板连接到主板上的指纹识别芯片或连接到主板上的可支持指纹数据处理的处理器（Central Processing Unit，CPU）。通过电极区上电容节点可检测到用户的触碰操作，并将将电容节点的电容值通过柔性电路板发送给主板。
S13：通过主板采集电容值，并根据电容值得到手指对应的指纹图像。
具体的，多个第一电极和多个第二电极可以通过柔性电路板连接到主板上的指纹识别芯片或连接到主板上的可支持指纹数据处理的处理器。当手指按压对电极区进行触控操作时，指纹识别芯片或可支持指纹数据处理的处理器采集电容节点的电容值，并分析每个时刻各电容节点产生的电容值大小差异，由此可以检测出对应手指由脊和谷构成的二维指纹图像。
S14：通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
具体的，预设指纹信息库中包括有对电子设备有操作权限的用户的指纹。主板上的指纹识别芯片或连接到主板上的处理器可以将二维指纹图像与预设指纹信息库中的预设指纹信息进行比较，判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。预设指纹信息可以是指纹特征点，例如指纹纹路中经常出现中断点、分叉点或转折点；预设指纹信息也可以是指纹总体特征，指纹总体特征可以是指纹纹形(比如，环形、弓形及螺旋形)、纹数等，在此不做限定。
区别于现有技术的情况，本实施方式通过在盖板上设置一电极区，该电极区包括多个第一电极和多个第二电极，第一电极与第二电极垂直相交以形成多个电容节点，能够利用手指对该电极区进行触控操作时产生的电容值，得到手指对应的指纹图像，进而实现指纹识别。
参阅图6，图6是本申请指纹识别方法一实施方式的流程示意图。在步骤S14之前，指纹识别方法进一步包括以下步骤：
S21：判断电子设备当前是否处于预设安全状态。
具体的，当在手指对电极区进行触控操作时，电子设备可以检测并判断电子设备当前是否处于预设安全状态。例如，当用户尝试通过指纹识别进行在线支付时，可以检测并判断电子设备的操作系统平台、与支付场景对应的支付软件或者电子设备当前接入的网络是否安全。当操作系统平台、支付软件或者电子设备当前接入的网络不安全时，判定电子设备当前不处于预设安全状态。
S22：若电子设备当前处于预设安全状态，则通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
当操作系统平台、支付软件或者电子设备当前接入的网络安全时，则通过主板判断指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
在一实施方式中，在步骤S14之后，指纹识别方法进一步包括以下步骤：当指纹图像与预设指纹信息库中的至少一个预设指纹信息相匹配时，则确定用户具有电子设备的操作权限。
具体的，当指纹图像与预设指纹信息库中的至少一个预设指纹信息相匹配时，可以确定用户具有电子设备的操作权限，例如，控制电子设备进行解锁，并进入具有用户权限的工作状态，或者控制电子设备进行在线支付，又或者控制电子设备进行考勤记录，在此不做限定。
参阅图7，图7是本申请具有存储功能的装置一实施方式的结构示意图，具有存储功能的装置70中存储有至少一个程序71或指令，程序71或指令用于执行如上述实施方式所示的指纹识别方法。具有存储功能的装置70可以是但不局限于U盘、SD卡、PD光驱、移动硬盘、大容量软驱、闪存、多媒体记忆卡等，还可以是服务器等等。需要说明的是，本实施方式的装置70可以执行上述方法中的步骤，相关内容的详细说明请参见上述方法部分，在此不再赘叙。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (20)

  1. 一种用于指纹识别的壳体，其包括：
    盖板；
    设置在所述盖板上的电极区，所述电极区包括多个第一电极和多个第二电极，所述第一电极与所述第二电极垂直相交以形成多个电容节点，其中，在手指对所述电极区进行触控操作时，所述电容节点产生一电容值。
  2. 根据权利要求1所述的壳体，其中，
    多个所述第一电极呈相互间隔且平行分布，多个所述第二电极呈相互间隔且平行分布。
  3. 根据权利要求1所述的壳体，其中，
    相邻的两个所述第一电极之间的间距小于或等于所述手指对应的指纹中相邻的脊与谷之间的间距；
    相邻的两个所述第二电极之间的间距小于或等于所述手指对应的指纹中相邻的脊与谷之间的间距。
  4. 根据权利要求1所述的壳体，其中，
    所述第一电极的材料和所述第二电极的材料为金属网格、银浆、石墨烯、碳纳米管或导电高分子材料中的至少一种。
  5. 根据权利要求1所述的壳体，其中，
    所述第一电极和第二电极中的一个为驱动电极且另一个为感应电极。
  6. 根据权利要求1所述的壳体，其中，
    相邻的两个所述第一电极之间的间距小于或等于40-325μm。
  7. 根据权利要求1所述的壳体，其中，
    相邻的两个所述第一电极之间的间距不小于所述第一电极的宽度。
  8. 根据权利要求1所述的壳体，其中，
    相邻的两个所述第二电极之间的间距不小于所述第二电极的宽度。
  9. 根据权利要求1所述的壳体，其中，
    所述盖板包括显示区以及围绕所述显示区设置的非显示区，所述电极区设置在所述盖板的所述非显示区上。
  10. 根据权利要求9所述的壳体，其中，
    所述盖板为透明玻璃板或透明塑料板。
  11. 一种电子设备，其中，所述电子设备包括壳体、柔性电路板以及主板；
    所述壳体包括盖板以及设置在所述盖板上的电极区，所述电极区包括多个第一电极和多个第二电极，所述第一电极与所述第二电极垂直相交以形成多个电容节点，其中，在手指接触所述电容节点时，所述电容节点产生一电容值；
    多个所述第一电极和多个所述第二电极通过所述柔性电路板连接所述主板。
  12. 根据权利要求11所述的电子设备，其中，
    多个所述第一电极通过第一引线与所述柔性电路板的第一柔性电路部分连接；
    多个所述第二电极通过第二引线与所述柔性电路板的第二柔性电路部分连接。
  13. 根据权利要求11所述的电子设备，其中，
    多个所述第一电极通过导电胶与所述柔性电路板的第一柔性电路部分连接；
    多个所述第二电极通过导电胶与所述柔性电路板的第二柔性电路部分连接。
  14. 根据权利要求11所述的电子设备，其中，
    多个所述第一电极呈相互间隔且平行分布，多个所述第二电极呈相互间隔且平行分布。
  15. 根据权利要求11所述的电子设备，其中，
    所述第一电极的材料和所述第二电极的材料为金属网格、银浆、石墨烯、碳纳米管或导电高分子材料中的至少一种。
  16. 根据权利要求11所述的电子设备，其中，
    所述主板上设置有指纹识别芯片，多个所述第一电极和多个所述第二电极通过所述柔性电路板连接所述主板上的所述指纹识别芯片。
  17. 根据权利要求11所述的电子设备，其中，
    所述主板上设置有可支持指纹数据处理的处理器，多个所述第一电极和多个所述第二电极通过所述柔性电路板连接所述主板上的所述可支持指纹数据处理的处理器。
  18. 一种指纹识别方法，其中，适用于电子设备，所述电子设备包括壳体、柔性电路板以及主板；所述壳体包括盖板以及设置在所述盖板上的电极区，所述电极区包括多个第一电极和多个第二电极，所述第一电极与所述第二电极垂直相交以形成多个电容节点，其中，在手指接触所述电容节点时，所述电容节点产生一电容值；多个所述第一电极和多个所述第二电极通过所述柔性电路板连接所述主板；所述指纹识别方法包括：
    获取电极区上电容节点的电容值，其中，在手指对所述电极区进行触控操作时，所述电容节点的电容值发生变化；
    将所述电容节点的电容值通过柔性电路板发送给主板；
    通过所述主板采集所述电容值，并根据所述电容值得到所述手指对应的指纹图像；
    通过所述主板判断所述指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
  19. 根据权利要求18所述的指纹识别方法，其中，在所述通过所述主板判断所述指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配步骤之前，所述指纹识别方法进一步包括：
    判断所述电子设备当前是否处于预设安全状态；
    若所述电子设备当前处于所述预设安全状态，则通过主板判断所述指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配。
  20. 根据权利要求18所述的指纹识别方法，其中，在所述通过所述主板判断所述指纹图像是否与预设指纹信息库中的至少一个预设指纹信息相匹配步骤之后，所述指纹识别方法进一步包括：
    当所述指纹图像与预设指纹信息库中的至少一个预设指纹信息相匹配时，则确定用户具有所述电子设备的操作权限。
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