WO2016206311A1 - 指纹识别器件、触控面板、输入设备及指纹识别方法 - Google Patents

指纹识别器件、触控面板、输入设备及指纹识别方法 Download PDF

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Publication number
WO2016206311A1
WO2016206311A1 PCT/CN2015/096512 CN2015096512W WO2016206311A1 WO 2016206311 A1 WO2016206311 A1 WO 2016206311A1 CN 2015096512 W CN2015096512 W CN 2015096512W WO 2016206311 A1 WO2016206311 A1 WO 2016206311A1
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WIPO (PCT)
Prior art keywords
electrode
electric field
fingerprint recognition
receiving
transmitting
Prior art date
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PCT/CN2015/096512
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English (en)
French (fr)
Inventor
秦纬
赵家阳
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/303,225 priority Critical patent/US10121047B2/en
Publication of WO2016206311A1 publication Critical patent/WO2016206311A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • 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
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • 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 disclosure relates to electronic and display technologies, and in particular, to a fingerprint recognition device, a touch panel, an input device, and a fingerprint identification method.
  • fingerprint recognition technology has become one of the important functions of electronic products. This function has been paid attention to by many electronic manufacturers and applied to its electronic products. It is generally believed that fingerprint recognition devices will provide mobile payment for future society. Key technical support, because fingerprint recognition technology can significantly improve the security and convenience of mobile payments.
  • the current fingerprint recognition sensors are designed and manufactured through chip technology, and the general sensing area is small and the price is high.
  • the present disclosure provides a fingerprint recognition device, a touch panel, and a fingerprint recognition method, which have good applicability in people's daily electronic products.
  • the fingerprint recognition device provided by the present disclosure based on the above object includes:
  • a fingerprint identification module a plurality of gate lines and a plurality of signal lines
  • the gate line and the signal line are disposed to define a plurality of sensing regions, and each of the sensing regions is provided with a thin film transistor and a sensing electrode connected to the thin film transistor; a gate and a gate of the thin film transistor a pole line connection, a source connected to the signal line, and a drain connected to the sensing electrode;
  • the signal line includes a transmitting signal line and a receiving signal line
  • the sensing electrode includes a transmitting electrode connected to the transmitting signal line and a receiving electrode connected to the receiving signal line; and a transmitting electrode is generated between the adjacent transmitting electrode and the receiving electrode An electric field to the receiving electrode;
  • the fingerprint recognition module is connected to the receiving signal line, by detecting that the surface of the finger is in the electric field, The strength of the electric field to determine the texture of the finger;
  • the sensing electrodes of the same row include the emitter electrode and the receiving electrode, and are connected to the same gate line.
  • the fingerprint identification device further includes:
  • a first amplifier disposed in a sensing region corresponding to the transmitting electrode, wherein an output end of the first amplifier is coupled to the transmitting electrode of the corresponding sensing region; an inverting input terminal of the first amplifier Connecting to a drain of the thin film transistor of the corresponding sensing region;
  • a second amplifier disposed in a sensing region corresponding to the receiving electrode, wherein an output end of the second amplifier is connected to a drain of the thin film transistor of the corresponding sensing region, and a reverse of the second amplifier
  • the phase input terminal is coupled to the receiving electrode of the corresponding sensing region.
  • the transmitting electrode and the receiving electrode of the same column are spaced apart.
  • At least one of the receiving electrodes is disposed between every two of the transmitting electrodes in the sensing electrode of the same column; or at least one of the transmitting electrodes is disposed between each of the two receiving electrodes.
  • the transmitting electrode and the receiving electrode of the same row are spaced apart.
  • At least one of the receiving electrodes is disposed between every two of the transmitting electrodes in the sensing electrode of the same row; or at least one of the transmitting electrodes is disposed between each of the two receiving electrodes.
  • one of the receiving electrodes is disposed between each of the two transmitting electrodes, and one of each of the two transmitting electrodes is disposed in the sensing electrode of the same column.
  • the receiving electrode is disposed in the sensing electrode of the same row.
  • the fingerprint identification module is connected to the receiving signal line and the transmitting signal line.
  • the number of the transmitting electrodes in the same row is less than the number of the receiving electrodes.
  • the fingerprint identification device further includes: an environmental noise detecting unit: detecting an environmental electric field of the sensing area; and the ambient electric field is an electric field of the sensing area when the finger is not touched,
  • the reference electric field is calculated when determining the texture of the finger, such that the texture of the finger can be determined according to the strength of the reference electric field and the strength of the electric field when the finger surface is in the electric field.
  • the ambient noise detecting unit further includes a third amplifier and an ambient noise sensing electrode; an output end of the third amplifier is connected to the ambient noise sensing electrode, and an inverting input end of the third amplifier
  • the fingerprint identification module is connected.
  • the driving unit further includes: driving the gate line row by row.
  • the sensing electrode has a density of at least 300 per square inch.
  • the present disclosure further provides a touch panel including the fingerprint recognition device according to any one of the embodiments of the present disclosure.
  • the touch panel further includes a conductive glass layer and a glass substrate, wherein the fingerprint identification device is located in the fingerprint recognition area of the touch panel, and is located on the conductive glass layer and the glass substrate between.
  • the present disclosure further provides a fingerprint identification method, which is applied to the fingerprint identification device according to any one of the embodiments of the present disclosure, including:
  • the texture of the finger is determined according to the strength of the electric field signal.
  • the present disclosure further provides a fingerprint identification method, which is applied to the fingerprint identification device according to some embodiments of the present disclosure, including:
  • the method further includes:
  • the texture of the finger is determined according to the strength of the electric field signal
  • the texture of the finger is determined according to the strength of the reference electric field and the strength of the electric field when the finger surface is in the electric field.
  • the present disclosure further provides an input device, including the touch panel according to any one of the embodiments of the present disclosure.
  • the fingerprint recognition device, the touch panel, the input device, and the fingerprint identification method provided by the present disclosure can reduce the cost of fingerprint recognition; since the existing display panel itself has a gate line and a signal line, Thin-film transistors and other components, while the display screens manufactured by existing display manufacturers have sufficiently high pixels to meet the sensing electrode density requirements for fingerprint recognition. Therefore, the existing display panels can be modified to perform the fingerprints.
  • the identification device is fabricated on the display panel, so that the present disclosure can realize fingerprint recognition by using the existing structure on the display panel which has been popularized at present, and Since the fingerprint recognition device can be implemented on the touch glass substrate, the fingerprint recognition device provided by the present disclosure has a smaller volume than the optical fingerprint recognition device with complicated structure in the prior art, so that the fingerprint recognition can be widely applied to the present.
  • the security of use behaviors such as unlocking and payment of electronic devices is improved, and since the fingerprint recognition device is small in size, when the fingerprint recognition function is added to the electronic device, the volume of the electronic device itself is not The cost has caused too much change.
  • FIG. 1 is a schematic structural diagram of a fingerprint identification device according to some embodiments of the present disclosure.
  • FIG. 2 is a schematic structural view of the circuit of FIG. 1;
  • 3A is a schematic cross-sectional view of a touch panel according to some embodiments of the present disclosure.
  • FIG. 3B is a schematic diagram of a fingerprint recognition of a touch panel according to some embodiments of the present disclosure.
  • FIG. 4 is a schematic diagram of setting a sensing electrode of a fingerprint identification device according to some embodiments of the present disclosure
  • FIG. 5 is a schematic diagram of setting a sensing electrode of a fingerprint identification device according to some embodiments of the present disclosure
  • FIG. 6 is a schematic structural diagram of a fingerprint identification device according to another embodiment of some embodiments of the present disclosure.
  • FIG. 7 is a schematic structural diagram of an environment noise detecting unit according to some embodiments of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a touch panel according to some embodiments of the present disclosure.
  • FIGS. 9A and 9B are schematic diagrams showing a driving process of a fingerprint identification device according to some embodiments of the present disclosure.
  • FIG. 10 is a schematic flowchart of a fingerprint identification method according to some embodiments of the present disclosure.
  • the present disclosure firstly provides a fingerprint identification device. Since the sensing electrode blocks the thin film transistor and other parts of the circuit, it is difficult to simultaneously display the sensing electrode and the thin film transistor in one picture. Therefore, some of the present disclosure are combined with FIG. 1 and FIG.
  • the structure of the fingerprint identification device of the embodiment is described, which includes:
  • a fingerprint identification module 100 a plurality of gate lines 101 and a plurality of signal lines 102;
  • the gate line 101 and the signal line 102 are disposed to define a plurality of sensing regions 103.
  • Each of the sensing regions 103 is provided with a thin film transistor 104 and a sensing electrode 105 connected to the thin film transistor 104; a gate and a gate line of the thin film transistor 104.
  • the source is connected to the signal line 102, the drain and the sensing Electrode connection; wherein, due to occlusion, thin film transistor 104 is not shown in FIG. 1;
  • the signal line 102 includes a transmitting signal line 1021 and a receiving signal line 1022.
  • the sensing electrode includes a transmitting electrode 1051 connected to the transmitting signal line and a receiving electrode 1052 connected to the receiving signal line; and an adjacent transmitting electrode 1051 and the receiving electrode 1052 are generated.
  • the fingerprint identification module 100 is connected to the receiving signal line 1022, and determines the texture of the finger by detecting the strength of the electric field;
  • the same row of sensing electrodes includes a transmitting electrode and a receiving electrode, and is connected to the same gate line.
  • the fingerprint identification device assists in the identification of the fingerprint by the gate line and the signal line, and an electric field is formed between the adjacent transmitting electrode and the receiving electrode. Because the unevenness of the fingerprint is caused by the unevenness of the dermis layer, and the dermis is cytosol, that is, conductive, so that the electric field line can be absorbed, and the size of the electric field above the sensing terminal can be determined by measuring the fingerprint to determine that the fingerprint is concave. Still convex.
  • the fingerprint recognition device When using the fingerprint recognition device provided by the present disclosure for fingerprint recognition, when the surface of the finger enters the electric field, the unevenness of the dermis layer of the fingerprint affects the strength of the electric field, resulting in a change in the electric field strength, and further detecting the electric field strength through the fingerprint recognition module. Weakness can indirectly detect the unevenness of the fingerprint, thus achieving fingerprint detection. Since electronic devices with touch functions have been popularized, touch-type electronic products also implement touch functions through gate lines and signal lines; the fingerprint recognition device of the present disclosure can utilize the existing electronic devices with touch functions. The structure is a part of the structure for realizing the fingerprint recognition function, so that the popularity of the fingerprint recognition function in the electronic device is greatly reduced.
  • the fingerprint display device can be fabricated on the display panel by making certain modifications to the existing display panel, thereby facilitating rapid promotion in various electronic products that people use every day.
  • the transmitting electrode 1051 and the receiving electrode 1052 of the above-mentioned counterpart are spaced apart, including the following cases:
  • one receiving electrode 1052 is disposed between each two transmitting electrodes 1051, and one transmitting electrode 1051 is disposed between each two receiving electrodes 1052;
  • one or more receiving electrodes 1052 are disposed between each two transmitting electrodes 1051; or
  • one or more transmitting electrodes are disposed between each two receiving electrodes 1052 1051.
  • Some embodiments of the present disclosure also specifically include determining a fingerprint path by detecting a change in the electric field when the surface of the finger is in the electric field.
  • the electric field value is first detected when the surface of the finger is in the electric field, and then the electric field change value is calculated according to the electric field value when the finger is not touched, and then the fingerprint is determined according to the electric field change value.
  • the sensing electrode has a density of at least 300 per square inch.
  • the fingerprint recognition sensor requires a density of more than 300 sensing terminals per unit inch, and the display screen that the display manufacturer can produce generally reaches more than 300 ppi, that is, there are more than 300 pixels in one inch, considering that one pixel is three sub-pixels. Then the density of fingerprint recognition requires that the existing display screen, touch screen, etc. can be satisfied. The density of the touch of the existing touch screen is much smaller than the density required for the fingerprint recognition. Therefore, the fingerprint recognition device provided by the present disclosure is directly formed on the touch screen, and the touch function can still be set in the fingerprint recognition area, so that the touch screen is not provided. The original function has an impact.
  • the electric field from the emitter electrode 1051 to the receiving electrode 1052 is an electric field actually generated between the emitter electrode 1051 and the receiving electrode 1052.
  • the function of the fingerprint recognition module can be implemented by a corresponding chip.
  • the sensing electrode should have a certain area.
  • the sensing electrode may be a square or rectangular metal layer, such as the emitter electrode 1051 and the receiving electrode 1052 shown in FIG.
  • the fingerprint identification module is also coupled to the transmit signal line.
  • the transmitting signal line and the receiving signal line are relative concepts, that is, the signal line connected to the transmitting electrode is a transmitting signal line, and the signal line connected to the receiving electrode is a receiving signal line; if one signal line is simultaneously transmitting and transmitting signals The line is connected to the receiving signal line, and the signal line is both a transmitting signal line and a receiving signal line.
  • the fingerprint identification device further includes:
  • the first amplifier 106 is disposed on the sensing region corresponding to the transmitting electrode, and the output end thereof is connected to the transmitting electrode of the same sensing region; the inverting input terminal is connected to the drain of the thin film transistor 104 of the same sensing region;
  • the second amplifier 107 is disposed on the sensing region corresponding to the receiving electrode, and has an output terminal connected to the drain of the thin film transistor 104 of the same sensing region, and an inverting input terminal thereof connected to the receiving electrode of the same sensing region.
  • the electric field strength from the transmitting electrode to the receiving electrode is not high, and the electric field change caused by the surface of the finger being in the electric field is weaker, in order to improve the electric power.
  • the field detection accuracy further improves the accuracy of fingerprint recognition.
  • the amplifier is used to amplify the electrical signal, so that a large electric field can be generated from the transmitting electrode to the receiving electrode, and the influence of the fingerprint on the strength of the electric field is also amplified, and the electric field change is also Zoomed in to improve the accuracy of the test.
  • the same array of the transmitting electrode 1051 and the receiving electrode 1052 are spaced apart such that the adjacent two rows of the transmitting electrode and the receiving electrode are interlaced, which increases the electric field of the adjacent two rows. The difference in signal, thereby improving the recognition accuracy and improving the recognition effect.
  • the direction defined by the gate lines is a row; the direction defined by the signal lines is a column.
  • the transmitting electrode 1051 and the receiving electrode 1052 in the same column described above are spaced apart, including the following cases:
  • one receiving electrode 1052 is disposed between each two transmitting electrodes 1051, and one transmitting electrode 1051 is disposed between each two receiving electrodes 1052;
  • one or more receiving electrodes 1052 are disposed between each two transmitting electrodes 1051; or
  • one or more emitter electrodes 1051 are disposed between each of the two receiving electrodes 1052.
  • the number of transmitting electrodes in the same row is less than the number of receiving electrodes.
  • the design in this embodiment can further improve the recognition accuracy and improve the recognition effect.
  • the same signal line may be both the transmitting signal line and the receiving signal line.
  • the fingerprint recognition device further includes a driving unit for driving the gate lines row by row.
  • the sensing area defined by the gate line and the signal line of the fingerprint identification device can be used as a finger touch sensing area 601, and the driving unit can adopt GOA (Gate On Array).
  • the unit 602, the GOA unit 602 is disposed on both sides of the finger touch sensing area 601, and includes a TFT (Thin Film Transistor), a shift register, and the like for driving the gate lines row by row.
  • the driving process is as shown in FIG. 9A-9B. Referring first to FIG. 9A, when the nth row of gate lines 101 is turned on, an induced electric field line is formed between the sensing electrodes corresponding to the nth row of gate lines 101, that is, the arrow in FIG. 9A.
  • the electric field line of the direction in combination with FIG. 6, at this time, a signal is emitted through the emitter electrode of the amplifier, and if the surface of the finger protrudes into the electric field, the fingerprint recognition module 604 detects the electric field change through the signal line 102, and determines the presence of the fingerprint, the receiving electrode The signal is received by the amplifier.
  • FIG. 9B when the n+1th row gate line 101 is turned on, the sensing electrodes corresponding to the n+1th row of gate lines 101 are formed.
  • the induced electric field line that is, the electric field line in the direction of the arrow in FIG. 9B; in conjunction with FIG.
  • the thin film transistor, the amplifier, the sensing electrode, and the like corresponding to the opened gate line start to work, and the signal is transmitted to the chip 6042 through the receiving signal line. Therefore, the chip 6042 can perform the identification of the partial fingerprint corresponding to the n+1th gate line after the processing signal.
  • the fingerprint recognition device further includes: an environmental noise detecting unit 603: an environmental electric field for detecting the sensing area; and an environmental electric field is an electric field of the sensing area when the finger is not touched.
  • an environmental noise detecting unit 603 an environmental electric field for detecting the sensing area
  • an environmental electric field is an electric field of the sensing area when the finger is not touched.
  • the reference electric field is the difference between the measured electric field and the environmental electric field.
  • the environmental noise detecting unit 603 can be disposed outside the finger touch sensing area 601 to prevent the finger from being accidentally touched during fingerprint detection. Since the electric field from the transmitting electrode to the receiving electrode is small, some factors in the environment may have a significant influence on the electric field from the transmitting electrode to the receiving electrode, so that the electric field has relatively obvious strength due to environmental factors such as environmental humidity and pressure. Change to become environmental noise. In order to improve the accuracy, it is necessary to eliminate the influence of environmental factors on the electric field of the transmitting electrode to the receiving electrode.
  • the ambient noise detecting unit 603 provided in this embodiment may be used, and the electric field strength of the transmitting electrode to the receiving electrode may be set to a rated value in an actual application, and in an ideal state, that is, in a negligible environment, the electric field strength is caused.
  • the rated value of the electric field from the transmitting electrode to the receiving electrode can be used as the reference electric field; but in the actual state, environmental factors may affect the electric field between the transmitting electrode and the receiving electrode, and pass through the environmental noise detecting unit 603.
  • the chip of the fingerprint identification module can filter out the environmental factors generated by the electric field. Interference, remove environmental noise, thereby achieving a higher signal-to-noise ratio, reducing the influence of environmental factors on the electric field and further affecting fingerprint recognition, and improving the sensitivity of fingerprint recognition.
  • the fingerprint recognition module 604 includes a flexible circuit board 6041 and a chip 6042, and the chip 6042 is disposed on the flexible circuit board 6041.
  • the flexible circuit board 6041 is coupled to a gate line, a signal line, a GOA unit 602, a noise detecting unit 603, etc., such that the chip 6042 controls the electric field and detects an electric field change.
  • the flexible circuit board 6041 is provided with a universal interface, and is basically capable of connecting any electronic product.
  • the ambient noise detecting unit 603 further includes a third amplifier 701 and an environmental noise sensing electrode; the output of the third amplifier is connected to the ambient noise sensing electrode.
  • the inverting input of the third amplifier 701 is connected to the fingerprint identification module.
  • the environmental noise sensing electrode and the fingerprint recognition module are not shown in FIG. 7 .
  • the present disclosure further provides a touch panel, including the fingerprint recognition device provided by any of the embodiments of the present disclosure.
  • FIG. 8 is a schematic diagram of a touch panel according to an embodiment of the present disclosure.
  • the fingerprint recognition device provided by the embodiment of the present disclosure is applied to a touch panel of a mobile phone or a tablet computer, and the area corresponding to the dotted line in FIG. 8 is a touch panel.
  • the fingerprint recognition area of the panel realizes fingerprint recognition in the area.
  • the fingerprint identification area can be made larger, so that the user can press the finger in a larger range to realize fingerprint recognition, thereby improving the convenience of the user. Sex, further improving the user experience.
  • the fingerprint recognition area can also have the original touch function of the touch panel. Therefore, the original button layout of the touch panel can be changed.
  • 3A is a schematic cross-sectional view of the fingerprint recognition area of the touch panel.
  • the emitter electrode 1051 and the receiving electrode 1052 are disposed under the conductive glass layer 301 of the touch panel.
  • the circuit shown in FIG. 2 can be disposed under the emitter electrode 1051 and the receiving electrode 1052. section.
  • the fingerprint recognition device can be implemented between the conductive glass layer 301 and the glass substrate 303.
  • the fingerprint recognition device provided by some embodiments of the present disclosure can be disposed between the conductive glass layer 301 and the glass substrate 303.
  • the present disclosure further provides a fingerprint identification method, which is applied to the fingerprint identification device provided by any one of the embodiments of the present disclosure, including the steps shown in FIG. 10:
  • Step 101 providing an electrical signal to the transmitting electrode and the receiving electrode
  • Step 102 Acquire an electric field signal induced by the receiving electrode.
  • Step 103 Determine the fingerprint path according to the strength of the electric field signal.
  • the fingerprint identification method provided by the present disclosure can recognize the fingerprint path by the strength of the electric field signal, so that the fingerprint identification method can be applied to a glass panel, or a substrate, or an electronic device commonly used by users today.
  • a widely applicable implementation method which can also be fabricated on a glass substrate is provided, which does not cause an excessive increase in volume of the electronic device itself, and is advantageous for the promotion of the fingerprint identification method while the electronic product is The impact of its own function or volume is minimal.
  • the method is applied to the fingerprint identification device provided by some embodiments of the present disclosure. After the step of acquiring the electric field signal induced by the receiving electrode, the method further includes:
  • the hand fingerprint path is determined according to the strength of the electric field signal
  • the hand fingerprint path is determined according to the strength of the reference electric field and the strength of the electric field when the finger surface is in the electric field.
  • the present disclosure also provides an input device, including a touch panel provided by any one of the embodiments of the present disclosure, which may be a device that requires fingerprint recognition, such as a mobile phone, a tablet computer, a remote controller, and a fingerprint attendance device.
  • a touch panel provided by any one of the embodiments of the present disclosure, which may be a device that requires fingerprint recognition, such as a mobile phone, a tablet computer, a remote controller, and a fingerprint attendance device.
  • the fingerprint recognition device, the touch panel, the input device, and the fingerprint identification method provided by the present disclosure can realize fingerprint recognition by using the existing structure on the touch panel that has been popularized, and can reduce fingerprint recognition. Cost, and reduce the size of the fingerprint identification device, so that fingerprint recognition can be widely applied to related touch electronic devices, improve the security of electronic device unlocking, payment and other use behaviors, and will not cause the size and cost of the electronic device itself. Too many changes.

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Abstract

一种指纹识别器件、触控面板、输入设备及指纹识别方法。所述指纹识别器件包括：指纹识别模块（100）、多条栅极线（101）和多条信号线（102）；栅极线（101）和信号线（102）交叉设置限定出多个感应区域（103），每个感应区域（103）中设置有薄膜晶体管（104）和与薄膜晶体管（104）连接的感应电极（105）；薄膜晶体管（104）的栅极与栅极线（101）连接，源极与信号线（102）连接，漏极与所述感应电极（105）连接；信号线（102）包括发射信号线（1021）和接收信号线（1022），感应电极（105）包括与发射信号线（1021）连接的发射电极（1051）和与接收信号线（1022）连接的接收电极（1052）；相邻的发射电极（1051）和接收电极（1052）之间产生从发射电极（1051）到接收电极（1052）的电场；指纹识别模块（100）与接收信号线（1022）连接，通过检测电场的强弱确定手指的纹路。

Description

指纹识别器件、触控面板、输入设备及指纹识别方法
相关申请的交叉引用
本申请主张在2015年6月26日在中国提交的中国专利申请号No.201510362766.9的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及电子以及显示技术，尤其涉及一种指纹识别器件、触控面板、输入设备及指纹识别方法。
背景技术
随着市场的发展，指纹识别技术成了电子产品的重要功能之一，这一功能被许多电子厂商所关注并应用在其电子产品中，普遍认为指纹识别装置会为未来社会实现移动支付等提供关键的技术支撑，因为指纹识别技术能够明显提高移动支付的安全性和便捷性。
目前的指纹识别感应器都是通过芯片技术进行设计和制作，普遍感应面积小，价格高。
发明内容
有鉴于此，本公开提出一种指纹识别器件、触控面板及指纹识别方法，能够在人们日常电子产品中有着较好的适用性。
基于上述目的本公开提供的指纹识别器件，包括：
指纹识别模块、多条栅极线和多条信号线；
其中，所述栅极线和所述信号线交叉设置限定出多个感应区域，每个所述感应区域中设置有薄膜晶体管以及与薄膜晶体管连接的感应电极；所述薄膜晶体管的栅极与栅极线连接，源极与信号线连接，漏极与所述感应电极连接；
所述信号线包括发射信号线和接收信号线，所述感应电极包括与发射信号线连接的发射电极和与接收信号线连接的接收电极；相邻的发射电极和接收电极之间产生从发射电极到接收电极的电场；
指纹识别模块与接收信号线连接，通过检测手指表面处于所述电场中时， 所述电场的强弱，以确定所述手指的纹路；
同一行的所述感应电极包括所述发射电极和所述接收电极，且连接同一个栅极线。
可选的，所述指纹识别器件还还包括：
第一放大器，设置于与所述发射电极对应的感应区域，其中，所述第一放大器的输出端与所述对应的感应区域的所述发射电极连接；所述第一放大器的反相输入端与所述对应的感应区域的所述薄膜晶体管的漏极连接；
第二放大器：设置于与所述接收电极对应的感应区域，其中，所述第二放大器的输出端与所述对应的感应区域的所述薄膜晶体管的漏极连接，所述第二放大器的反相输入端与所述对应的感应区域的所述接收电极连接。
可选的，同一列的所述发射电极和所述接收电极间隔设置。
可选的，同一列的所述感应电极中，每两个所述发射电极之间设置至少一个所述接收电极；或者，每两个所述接收电极之间设置至少一个所述发射电极。
可选的，同一行的所述发射电极和所述接收电极间隔设置。
可选的，同一行的所述感应电极中，每两个所述发射电极之间设置至少一个所述接收电极；或者，每两个所述接收电极之间设置至少一个所述发射电极。
可选的，同一行的所述感应电极中，每两个所述发射电极之间设置一个所述接收电极，并且同一列的所述感应电极中，每两个所述发射电极之间设置一个所述接收电极。
可选的，所述指纹识别模块与所述接收信号线和所述发射信号线连接。
可选的，同一行的所述发射电极的数目少于所述接收电极的数目。
可选的，所述指纹识别器件还包括：环境噪声检测单元：用于检测所述感应区域的环境电场；所述环境电场为所述感应区域在所述手指未触碰情况下的电场，用于在确定所述手指的纹路时计算基准电场，使得能够根据所述基准电场强弱和所述手指表面处于所述电场中时的所述电场强弱确定所述手指的纹路。
可选的，所述环境噪声检测单元还包括第三放大器和环境噪声感应电极；所述第三放大器的输出端与所述环境噪声感应电极连接，所述第三放大器的反相输入端与所述指纹识别模块连接。
可选的，还包括驱动单元：用于逐行驱动所述栅极线。
可选的，所述感应电极的密度至少为每平方英寸300个。
同时，本公开还提供一种触控面板，包括本公开任意一项实施例所述的指纹识别器件。
可选的，所述的触控面板还包括导电玻璃层和玻璃基板，其中，所述指纹识别器件位于所述触控面板的指纹识别区域中，并位于所述导电玻璃层和所述玻璃基板之间。
进一步，本公开还提供一种指纹识别方法，应用于本公开任意一项实施例所述的指纹识别器件，包括：
向所述发射电极和所述接收电极提供电信号；
获取从所述发射电极到所述接收电极感应的电场信号；
根据所述电场信号的强弱，确定所述手指的纹路。
进一步，本公开还提供一种指纹识别方法，应用于本公开某些实施例所述的指纹识别器件，包括：
向所述发射电极和所述接收电极提供电信号；
获取从所述发射电极到所述接收电极感应的电场信号；
根据所述电场信号的强弱，确定所述手指的纹路；
其中，所述获取从所述发射电极到所述接收电极感应的电场信号的步骤之后，还包括：
根据所述环境噪声检测单元检测的所述环境电场和获取到的从所述发射电极到所述接收电极感应的电场信号确定基准电场；
在根据所述电场信号的强弱确定所述手指的纹路时，根据所述基准电场的强弱和所述手指表面处于所述电场中时的所述电场强弱确定所述手指的纹路。
进一步，本公开还提供一种输入设备，包括本公开任一项实施例所述的触控面板。
从上面所述可以看出，本公开提供的指纹识别器件、触控面板、输入设备及指纹识别方法，能够降低指纹识别的成本；由于现有的显示面板上本身具备栅极线和信号线、薄膜晶体管等元件，同时现有的显示屏生产厂家制造的显示屏具有足够高的像素，能够满足指纹识别的感应电极密度要求，因此对现有的显示面板进行一定的改造就可以将所述指纹识别器件制作在显示面板上，使得本公开能够利用目前已经普及的显示面板上已有的结构实现指纹识别，并且， 由于指纹识别器件可在触控用玻璃基板上实现，相对于现有技术中结构复杂的光学指纹识别器件，本公开所提供的指纹识别器件具有更小的体积，使得指纹识别能够广泛应用到现有的触控电子设备中，提高电子设备解锁、支付等使用行为的安全性，同时由于指纹识别器件的体积较小，在电子设备上增加指纹识别功能时，不会对电子设备本身的体积、成本造成过多的改变。
附图说明
图1为本公开一些实施例的指纹识别器件结构示意图；
图2为图1的电路结构示意图；
图3A为本公开一些实施例的触控面板断面结构示意图；
图3B为本公开一些实施例的触控面板识别指纹的示意图；
图4为本公开一些一种实施例的指纹识别器件感应电极设置示意图；
图5为本公开一些实施例的指纹识别器件感应电极设置示意图；
图6为本公开一些实施例的另一种实施例的指纹识别器件结构示意图；
图7为本公开一些实施例的环境噪声检测单元电路结构示意图；
图8为本公开一些实施例的触控面板结构示意图；
图9A、9B为本公开一些实施例的指纹识别器件驱动过程示意图；
图10为本公开一些实施例的指纹识别方法流程示意图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
本公开首先提供一种指纹识别器件，由于感应电极会遮挡薄膜晶体管以及电路其它部分，在一幅图中难以同时将感应电极和薄膜晶体管同时展现出来，因此，结合图1、图2对本公开一些实施例的指纹识别器件的结构进行说明，其包括：
指纹识别模块100、多条栅极线101和多条信号线102；
栅极线101和信号线102交叉设置限定出多个感应区域103，每个感应区域103中设置有薄膜晶体管104和与薄膜晶体管104连接的感应电极105；薄膜晶体管104的栅极与栅极线连接，源极与信号线102连接，漏极与所述感应 电极连接；其中，由于遮挡，薄膜晶体管104在图1中未画出；
信号线102包括发射信号线1021和接收信号线1022，感应电极包括与发射信号线连接的发射电极1051和与接收信号线连接的接收电极1052；相邻的发射电极1051和接收电极1052之间产生从发射电极1051到接收电极1052的电场；为了体现出具体实施例中的电路结构，图2中未画出感应电极；
指纹识别模块100与接收信号线1022连接，通过检测电场的强弱确定手指的纹路；
同一行感应电极包括发射电极和接收电极，且连接同一个栅极线。
从上面所述可以看出，本公开所提供的指纹识别器件，利用栅极线和信号线辅助实现指纹的识别，相邻的发射电极和接收电极之间形成电场。因为指纹的凹凸是由真皮层的凹凸导致的，而真皮是有细胞液的，也就是导电的，从而可以吸收电场线，通过测量指纹识别感应端子上方的电场大小从而可以判断指纹是凹形的还是凸形的。使用本公开所提供的指纹识别器件进行指纹识别时，当手指表面进入电场，指纹的真皮层的凹凸会对电场的大小强弱造成影响，导致电场强度的改变，进一步通过指纹识别模块检测电场强弱就可以间接检测指纹的凹凸，从而实现指纹检测。由于目前具有触控功能的电子设备已普及，触控类电子产品也是通过栅极线、信号线辅助实现触控功能；本公开的指纹识别器件能够借助现有的具有触控功能的电子设备中原有结构作为实现指纹识别功能的部分结构，从而使得指纹识别功能在电子设备中的普及难度大为降低。由于现有的显示面板上本身具备栅极线和信号线、薄膜晶体管等元件，同时现有的显示屏生产厂家制造的显示屏具有足够高的像素，能够满足指纹识别的感应电极密度要求，因此对现有的显示面板进行一定的改造就可以将指纹识别器件制作在显示面板上，从而有利于在人们日常使用的各类电子产品中实现快速推广。
上面所述同行的发射电极1051和接收电极1052间隔设置，包括下述情况：
同行的感应电极中，每两个发射电极1051之间设置有一个接收电极1052，每两个接收电极1052之间设置有一个发射电极1051；或
同行的感应电极中，每两个发射电极1051之间设置有一个以上接收电极1052；或
同行的感应电极中，每两个接收电极1052之间设置有一个以上发射电极 1051。
本公开一些实施例还具体包括：通过检测手指表面处于所述电场中时所述电场的变化确定手指纹路。在一种具体实施例中，首先检测出手指表面处于所述电场中时所述电场值，然后根据手指未触碰情况下的电场值计算电场变化值，再根据所述电场变化值确定指纹。
另外一方面，感应电极的密度至少为每平方英寸300个。指纹识别感应器需要单位英寸有300以上的感应端子的密度，而显示屏厂家可以生产的显示屏普遍达到300ppi以上，即1英寸有300个以上的像素，考虑到一个像素是3个亚像素，那么指纹识别的密度要求，现有的显示屏、触控屏等是能够满足的。现有的触摸屏的触摸的密度远小于指纹识别所需要密度，因此，在触摸屏上直接制作本公开所提供的指纹识别器件，其指纹识别的区域中仍然能够设置触控功能，从而不会对触摸屏原有的功能造成影响。
上述发射电极1051到接收电极1052的电场，为发射电极1051与接收电极1052之间实际产生的电场。
在本公开具体实施例中，指纹识别模块的功能可以通过相应的芯片实现。
在本公开具体实施例中，感应电极应当具有一定的面积，例如，感应电极可以是方形或矩形的金属层，如图1所示的发射电极1051和接收电极1052。
在本公开具体实施例中，指纹识别模块还与发射信号线连接。
在上述实施例中，发射信号线和接收信号线为相对概念，即与发射电极连接的信号线为发射信号线，与接收电极连接的信号线为接收信号线；若是一个信号线同时与发射信号线和接收信号线连接，那么该信号线既是发射信号线，又是接收信号线。
在本公开一些实施例中，仍然参照图2，指纹识别器件还包括：
第一放大器106：设置于发射电极对应的感应区域，其输出端与同一感应区域发射电极连接；反相输入端与同一感应区域的薄膜晶体管104的漏极连接；
第二放大器107：设置于接收电极对应的感应区域，其输出端与同一感应区域的薄膜晶体管104的漏极连接，其反相输入端与同一感应区域的接收电极连接。
由于手指纹路较为细密，在检测指纹时，从发射电极到接收电极的电场强度不高，由于手指表面处于电场之中而导致的电场变化更为微弱，为了提高电 场检测精度，进一步提高指纹识别精度，采用放大器对电信号进行放大，从而从发射电极到接收电极能够产生较大的电场，指纹对电场强弱所造成的影响也被放大，以及电场变化也会得到放大，提高了检测的准确度。
在本公开一些实施例中，如图4所示，同列的发射电极1051和接收电极1052间隔设置，使得相邻两行的发射电极和接收电极排布存在交错，会提高相邻两行的电场信号的差异，从而提高识别精度，改善识别效果。在本公开一些实施例中，栅极线所限定出的方向为行；信号线所限定出的方向为列。
上面所述同列的发射电极1051和接收电极1052间隔设置，包括下述情况：
同列的感应电极中，每两个发射电极1051之间设置有一个接收电极1052，每两个接收电极1052之间设置有一个发射电极1051；或
同列的感应电极中，每两个发射电极1051之间设置有一个以上接收电极1052；或
同列的感应电极中，每两个接收电极1052之间设置有一个以上发射电极1051。
在本公开一些实施例中，如图5所示，同一行的发射电极的数目少于接收电极的数目。本实施例中的设计能够进一步提高识别精度，改善识别效果。
在图4-5所示的实施例中，由于同列的电极可能包括发射电极，也包括接收电极，因此同一个信号线可能既是发射信号线，又是接收信号线。
在本公开一些实施例中，指纹识别器件还包括驱动单元：用于逐行驱动栅极线。
如图6所示，指纹识别器件的栅极线和信号线所限定出的多个感应区域，可作为手指触碰感测区域601，驱动单元可采用GOA(Gate On Array，阵列基板行驱动)单元602，GOA单元602设置于手指触碰感测区域601的两侧，包括TFT(Thin Film Transistor，薄膜晶体管)、移位寄存器等，用于逐行驱动栅极线。驱动过程如图9A-9B所示，首先参照图9A，当第n行栅极线101打开时，第n行栅极线101所对应的感应电极之间形成感应电场线，即图9A中箭头方向的电场线；再结合图6，这时通过放大器的发射电极发出信号，同时如果手指表面伸入电场中，使得指纹识别模块604通过信号线102检测出电场变化，判断存在指纹后，接收电极通过放大器接收信号。接着，如图9B所示，第n+1行栅极线101打开时，第n+1行栅极线101所对应的感应电极之间形成 感应电场线，即图9B中箭头方向的电场线；在结合图6，所打开的栅极线对应的薄膜晶体管、放大器、感应电极等开始工作，并且把信号通过接收信号线传入芯片6042，从而芯片6042经过处理信号可以进行第n+1行栅极线对应的部分指纹的识别。
在本公开一些实施例中，仍然参照图6，指纹识别器件还包括：环境噪声检测单元603：用于检测感应区域的环境电场；环境电场为所述感应区域在手指未触碰情况下的电场，用于在确定手指纹路时计算基准电场，使得能够根据基准电场强弱和手指表面处于电场中时的电场强弱确定手指纹路。其中，基准电场为实测电场与环境电场的差值。
环境噪声检测单元603可设置于手指触碰感测区域601以外，以免进行指纹检测时手指误碰。由于发射电极到接收电极的电场较小，环境中的某些因素可能会对发射电极到接收电极的电场产生较为明显的影响，使得电场因为环境湿度、气压等环境因素出现相对较为明显的强弱改变而成为环境噪声。为提高精度，需排除环境因素对发射电极到接收电极的电场所造成的影响。具体可采用本实施例所提供的环境噪声检测单元603，发射电极到接收电极的电场强弱在实际应用中可设定一个额定值，在理想状态下，即在可忽略环境对电场强弱造成的影响的状态下，发射电极到接收电极的电场的额定值可作为基准电场；但在实际状态下，环境因素可能会对发射电极到接收电极之间的电场产生影响，通过环境噪声检测单元603，能够检测出由于环境因素导致的电场变化，获得环境噪声，从而在检测时能够在电场的额定值的基础上进行调整，使得指纹识别模块的芯片通过信号对比可以过滤掉环境因素对电场产生的干扰，除去环境噪声，从而实现更高的信噪比，减少环境因素影响电场而进一步对指纹识别造成的影响，提高了指纹识别的灵敏性。
在图6所示的指纹识别器件中，指纹识别模块604包括柔性电路板6041和芯片6042，芯片6042设置在柔性电路板6041上。在一些具体实施例中，柔性电路板6041与栅极线、信号线、GOA单元602、噪声检测单元603等连接，从而芯片6042控制电场并检测电场变化。柔性电路板6041上设置有通用接口，基本上能够连接任意电子产品。
在本公开一些实施例中，如图7所示，环境噪声检测单元603还包括第三放大器701和环境噪声感应电极；第三放大器的输出端与环境噪声感应电极连 接，第三放大器701的反相输入端与指纹识别模块连接。其中，环境噪声感应电极和指纹识别模块在图7中未画出。
同时，本公开还提供一种触控面板，包括本公开任意一项实施例所提供的指纹识别器件。
图8为本公开实施例的一种触控面板示意图，将本公开实施例所提供的指纹识别器件应用于手机或平板电脑等的触控面板，在图8中虚线所对应的区域为触控面板的指纹识别区域，在该区域内实现指纹识别，在具体实现时，可将指纹识别区域制作的较大，使得用户可以在一个较大的范围内按压手指实现指纹识别，提高用户使用的方便性，进一步改善用户体验。同时，指纹识别区域也可具备触控面板原有的触控功能，因此，触控面板原有的按键布局可不进行改变。
图3A展示了触控面板指纹识别区域的断面结构示意，发射电极1051和接收电极1052设置于触控面板的导电玻璃层301下方，发射电极1051和接收电极1052下方可设置图2所示的电路部分。手指302触碰触控面板上的指纹识别区域，如图3B所示，即可实现指纹识别，本公开一些实施例所提供的指纹识别器件可设置于导电玻璃层301和玻璃基板303之间。
本公开还提供一种指纹识别方法，应用于本公开任意一项实施例所提供的指纹识别器件，包括如图10所示的步骤：
步骤101：向发射电极和接收电极提供电信号；
步骤102：获取接收电极感应的电场信号；
步骤103：根据电场信号的强弱，确定手指纹路。
从上面所述可以看出，本公开所提供的指纹识别方法，能够通过电场信号的强弱识别手指纹路，使得指纹识别方法可以应用到玻璃面板、或基板、或当今用户普遍所所用的电子器件中，提供了一种在玻璃衬底基板上也能够制作的、具有广泛应用性的实现方式，不会对电子器件本身造成体积上的过度增加，有利于指纹识别方法推广的同时，对电子产品本身所具有的功能或体积造成的影响极小。
在本公开的一些实施例中，所述方法应用于本公开某些实施例所提供的指纹识别器件，在获取接收电极感应的电场信号的步骤之后，还包括：
根据环境噪声检测单元检测的环境电场确定基准电场；
在根据电场信号的强弱、确定手指纹路时，根据基准电场的强弱和手指表面处于电场中时的电场强弱确定手指纹路。
本公开还提供一种输入设备，包括本公开任意一项实施例所提供的触控面板，该输入设备可以是手机、平板电脑、遥控器和指纹考勤装置等需要指纹识别的设备的一种。
从上面所述可以看出，本公开提供的指纹识别器件、触控面板、输入设备及指纹识别方法，能够利用目前已经普及的触控面板上已有的结构实现指纹识别，能够降低指纹识别的成本，并缩小指纹识别器件的体积，使得指纹识别能够广泛应用到相关的触控电子设备中，提高电子设备解锁、支付等使用行为的安全性，同时不会对电子设备本身的体积、成本造成过多的改变。
应当理解，本说明书所描述的多个实施例仅用于说明和解释本公开，并不用于限定本公开。并且在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (18)

  1. 一种指纹识别器件，包括：
    指纹识别模块、多条栅极线和多条信号线；
    其中，所述栅极线和所述信号线交叉设置限定出多个感应区域，每个所述感应区域中设置有薄膜晶体管以及与所述薄膜晶体管连接的感应电极；所述薄膜晶体管的栅极与所述栅极线连接，源极与所述信号线连接，漏极与所述感应电极连接；
    所述信号线包括发射信号线和接收信号线，所述感应电极包括与所述发射信号线连接的发射电极和与所述接收信号线连接的接收电极；相邻的所述发射电极和所述接收电极之间产生从所述发射电极到所述接收电极的电场；
    指纹识别模块与所述接收信号线连接，通过检测手指表面处于所述电场中时所述电场的强弱，以确定所述手指的纹路；
    同一行的所述感应电极包括所述发射电极和所述接收电极，且连接同一个栅极线。
  2. 根据权利要求1所述的指纹识别器件，还包括：
    第一放大器，设置于与所述发射电极对应的感应区域，其中，所述第一放大器的输出端与所述对应的感应区域的所述发射电极连接；所述第一放大器的反相输入端与所述对应的感应区域的所述薄膜晶体管的漏极连接；
    第二放大器，设置于与所述接收电极对应的感应区域，其中，所述第二放大器的输出端与所述对应的感应区域的所述薄膜晶体管的漏极连接，所述第二放大器的反相输入端与所述对应的感应区域的所述接收电极连接。
  3. 根据权利要求1所述的指纹识别器件，其中，同一列的所述发射电极和所述接收电极间隔设置。
  4. 根据权利要求3所述的指纹识别器件，其中，同一列的所述感应电极中，每两个所述发射电极之间设置至少一个所述接收电极；或者，每两个所述接收电极之间设置至少一个所述发射电极。
  5. 根据权利要求1所述的指纹识别器件，其中，同一行的所述发射电极和所述接收电极间隔设置。
  6. 根据权利要求5所述的指纹识别器件，其中，同一行的所述感应电极 中，每两个所述发射电极之间设置至少一个所述接收电极；或者，每两个所述接收电极之间设置至少一个所述发射电极。
  7. 根据权利要求1所述的指纹识别器件，其中，同一行的所述感应电极中，每两个所述发射电极之间设置一个所述接收电极，并且同一列的所述感应电极中，每两个所述发射电极之间设置一个所述接收电极。
  8. 根据权利要求1所述的指纹识别器件，其中，所述指纹识别模块与所述接收信号线和所述发射信号线连接。
  9. 根据权利要求1所述的指纹识别器件，其中，同一行的所述发射电极的数目少于所述接收电极的数目。
  10. 根据权利要求1所述的指纹识别器件，还包括：环境噪声检测单元：用于检测所述感应区域的环境电场；所述环境电场为所述感应区域在所述手指未触碰情况下的电场，用于在确定所述手指的纹路时计算基准电场，使得能够根据所述基准电场强弱和所述手指表面处于所述电场中时的所述电场强弱确定所述手指的纹路。
  11. 根据权利要求10所述的指纹识别器件，其中，所述环境噪声检测单元还包括第三放大器和环境噪声感应电极；所述第三放大器的输出端与所述环境噪声感应电极连接，所述第三放大器的反相输入端与所述指纹识别模块连接。
  12. 根据权利要求1所述的指纹识别器件，还包括驱动单元：用于逐行驱动所述栅极线。
  13. 根据权利要求1所述的指纹识别器件，其中，所述感应电极的密度至少为每平方英寸300个。
  14. 一种触控面板，包括权利要求1-13中任意一项所述的指纹识别器件。
  15. 根据权利要求14所述的触控面板，还包括导电玻璃层和玻璃基板，其中，所述指纹识别器件位于所述触控面板的指纹识别区域中，并位于所述导电玻璃层和所述玻璃基板之间。
  16. 一种指纹识别方法，应用于如权利要求1-13中任意一项所述的指纹识别器件，包括：
    向所述发射电极和所述接收电极提供电信号；
    获取从所述发射电极到所述接收电极感应的电场信号；
    根据所述电场信号的强弱，确定所述手指的纹路。
  17. 一种指纹识别方法，应用于如权利要求10或11所述的指纹识别器件，包括：
    向所述发射电极和所述接收电极提供电信号；
    获取从所述发射电极到所述接收电极感应的电场信号；
    根据所述电场信号的强弱，确定所述手指的纹路；
    其中，所述获取从所述发射电极到所述接收电极感应的电场信号的步骤之后，还包括：
    根据所述环境噪声检测单元检测的所述环境电场和获取到的从所述发射电极到所述接收电极感应的电场信号确定基准电场；
    在根据所述电场信号的强弱确定所述手指的纹路时，根据所述基准电场的强弱和所述手指表面处于所述电场中时的所述电场强弱确定所述手指的纹路。
  18. 一种输入设备，包括权利要求14所述的触控面板。
PCT/CN2015/096512 2015-06-26 2015-12-07 指纹识别器件、触控面板、输入设备及指纹识别方法 WO2016206311A1 (zh)

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