WO2021223280A1 - 指纹识别驱动电路 - Google Patents

指纹识别驱动电路 Download PDF

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Publication number
WO2021223280A1
WO2021223280A1 PCT/CN2020/094223 CN2020094223W WO2021223280A1 WO 2021223280 A1 WO2021223280 A1 WO 2021223280A1 CN 2020094223 W CN2020094223 W CN 2020094223W WO 2021223280 A1 WO2021223280 A1 WO 2021223280A1
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WIPO (PCT)
Prior art keywords
pull
unit
module
signal
mos tube
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PCT/CN2020/094223
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English (en)
French (fr)
Inventor
周永祥
管延庆
田超
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武汉华星光电技术有限公司
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Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/960,568 priority Critical patent/US11113496B1/en
Publication of WO2021223280A1 publication Critical patent/WO2021223280A1/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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • This application relates to the technical field of fingerprint identification, and in particular to a fingerprint identification drive circuit.
  • the existing fingerprint drive scheme uses different levels of transmission signal lines to control the fingerprint GOA circuits of different partitions.
  • scan the partition 1 by turning on the first-level transmission signal line.
  • Other partitions where the STV signal is not turned on will not work.
  • the number of level transmission signal lines is significantly increased, which increases the width of the frame.
  • the increase in the size of the display panel or the smaller division of the number of partitions will increase the number of level transmission signal lines, which is not conducive to increasing the screen-to-body ratio.
  • the purpose of the embodiments of the present application is to provide a fingerprint identification driving circuit, which can increase the screen-to-body ratio.
  • the embodiment of the present application provides a fingerprint identification driving circuit, including:
  • One level transmission signal line which is used to provide level transmission signal
  • a plurality of driving areas each of the driving areas is provided with a level transmission unit and a plurality of first GOA driving units; the level transmission units of the plurality of driving areas are sequentially cascaded, and the plurality of first GOA driving units in the same driving area One GOA drive unit is cascaded in sequence;
  • Each of the level transmission units is connected to a level transmission signal line to turn on the first GOA driving unit of the first level in the corresponding driving area according to the level transmission signal, and each first GOA driving unit is used for Drive the fingerprint identification unit of the corresponding row;
  • Each level transmission unit is also used to output an opening signal to the next level transmission unit to turn on the next level transmission unit;
  • the stage transmission unit includes a second GOA drive unit and a switch unit;
  • the second GOA drive unit of each stage transfer unit is connected to the second GOA drive unit of the next stage transfer unit to output an on signal to the second GOA drive unit of the next stage transfer unit, so that the next The second GOA drive unit of the first level transmission unit is turned on;
  • the input terminal of the switch unit is connected to the stage transmission signal line, and the second GOA driving unit of each stage transmission unit is connected to the control terminal of the switch unit to output an on signal to the switch unit to The switch unit is turned on, so that the output stage of the switch unit transmits a signal to the first GOA driving unit of the first stage corresponding to the driving area;
  • the first GOA driving unit and the second GOA driving unit have the same circuit structure.
  • the switch unit is a thin film field effect transistor.
  • the first GOA driving unit includes: a pull-up control module, a pull-up module, a pull-down module, and a pull-down maintenance module;
  • the input end of the pull-up control module is connected to the first level signal, the output end of the pull-up control module and the control end of the pull-up module are connected to point Q, and one end of the pull-up module is connected to the clock Signal, the output terminal of the pull-up module is used as the output port of the first GOA driving unit;
  • the input terminal of the pull-down module is connected with the output terminal of the pull-up module, the output terminal of the pull-down module is connected with a preset low level line, and the control terminal of the pull-down module is connected with the output terminal of the pull-down maintenance module ,
  • the control terminal of the pull-down maintaining module is connected to the first level signal and the second level signal, and under the control of the first level signal and the second level signal, the pull-down maintaining signal is output to the control of the pull-down module end.
  • the first GOA driving unit further includes a first capacitor, one end of the first capacitor is connected to the Q point, and the other end of the first capacitor is connected to For the default low-voltage line.
  • the pull-up module includes a seventh MOS transistor and a ninth MOS transistor;
  • the input end of the seventh MOS transistor is connected to the Q point, the output end of the seventh MOS transistor is connected to the control end of the ninth MOS transistor, and the input end of the ninth MOS transistor is connected to the For a clock signal, the output terminal of the ninth MOS tube is connected to the input terminal of the pull-down module, and the control terminal of the seventh MOS tube is connected to a preset high-level signal.
  • the pull-down module includes a tenth MOS transistor, the input end of the tenth MOS transistor is connected to the output end of the pull-up module, and the tenth MOS transistor The output terminal of is connected to a preset low-voltage line, and the control terminal of the tenth MOS transistor is connected to the pull-down maintenance module.
  • the pull-down maintenance module includes a second MOS tube, a third MOS tube, a fourth MOS tube, a fifth MOS tube, a sixth MOS tube, and an eighth MOS tube;
  • the input end of the second MOS transistor is connected to the control end of the fourth MOS transistor and is connected to a second level signal, the output end of the second MOS transistor is connected to the control end of the sixth MOS transistor and the The Q point is connected, the control terminal of the second MOS tube is connected to the output terminal of the first GOA driving unit of the n+2th stage; the input terminal of the third MOS tube is connected to the n+1th stage clock signal, The input end of the fourth MOS transistor is connected to the n-1 level clock signal, the control end of the third MOS switch is connected to the first level signal, and the output end of the third MOS transistor is connected to the fourth The output terminal of the MOS tube is connected to and connected to the control terminal of the eighth MOS tube, the input terminal of the eighth MOS tube is connected to a high-level signal, and the output terminal of the eighth MOS tube is connected to the sixth MOS tube.
  • the input end of the tube and the control end of the pull-down module are connected to point P.
  • the fingerprint recognition drive circuit described in the embodiment of the present application it further includes a reset MOS tube.
  • the input terminal of the reset MOS tube is connected to the control terminal and a reset signal is connected.
  • the output terminal of the reset MOS tube is Click to connect.
  • the embodiment of the present application also provides a fingerprint identification driving circuit, including:
  • One level transmission signal line which is used to provide level transmission signal
  • a plurality of driving areas each of the driving areas is provided with a level transmission unit and a plurality of first GOA driving units; the level transmission units of the plurality of driving areas are sequentially cascaded, and the plurality of first GOA driving units in the same driving area One GOA drive unit is cascaded in sequence;
  • Each of the level transmission units is connected to a level transmission signal line to turn on the first GOA driving unit of the first level in the corresponding driving area according to the level transmission signal, and each first GOA driving unit is used for Drive the fingerprint identification unit of the corresponding row;
  • Each level transmission unit is also used to output an opening signal to the next level transmission unit to turn on the next level transmission unit.
  • the stage transfer unit includes a second GOA driving unit and a switch unit;
  • the second GOA drive unit of each stage transfer unit is connected to the second GOA drive unit of the next stage transfer unit to output an on signal to the second GOA drive unit of the next stage transfer unit, so that the next The second GOA drive unit of the first level transmission unit is turned on;
  • the input terminal of the switch unit is connected to the stage transmission signal line, and the second GOA driving unit of each stage transmission unit is connected to the control terminal of the switch unit to output an on signal to the switch unit to The switch unit is turned on, so that the output stage of the switch unit transmits a signal to the first GOA driving unit of the first stage corresponding to the driving area.
  • the switch unit is a thin film field effect transistor.
  • the first GOA driving unit and the second GOA driving unit have the same circuit structure.
  • the first GOA driving unit includes: a pull-up control module, a pull-up module, a pull-down module, and a pull-down maintenance module;
  • the input end of the pull-up control module is connected to the first level signal, the output end of the pull-up control module and the control end of the pull-up module are connected to point Q, and one end of the pull-up module is connected to the clock Signal, the output terminal of the pull-up module is used as the output port of the first GOA driving unit;
  • the input terminal of the pull-down module is connected with the output terminal of the pull-up module, the output terminal of the pull-down module is connected with a preset low level line, and the control terminal of the pull-down module is connected with the output terminal of the pull-down maintenance module ,
  • the control terminal of the pull-down maintaining module is connected to the first level signal and the second level signal, and under the control of the first level signal and the second level signal, the pull-down maintaining signal is output to the control of the pull-down module end.
  • the first GOA driving unit further includes a first capacitor, one end of the first capacitor is connected to the Q point, and the other end of the first capacitor is connected to For the default low-voltage line.
  • the pull-up module includes a seventh MOS transistor and a ninth MOS transistor;
  • the input end of the seventh MOS transistor is connected to the Q point, the output end of the seventh MOS transistor is connected to the control end of the ninth MOS transistor, and the input end of the ninth MOS transistor is connected to the For a clock signal, the output terminal of the ninth MOS tube is connected to the input terminal of the pull-down module, and the control terminal of the seventh MOS tube is connected to a preset high-level signal.
  • the pull-down module includes a tenth MOS transistor, the input end of the tenth MOS transistor is connected to the output end of the pull-up module, and the tenth MOS transistor The output terminal of is connected to a preset low-voltage line, and the control terminal of the tenth MOS transistor is connected to the pull-down maintenance module.
  • the pull-down maintenance module includes a second MOS tube, a third MOS tube, a fourth MOS tube, a fifth MOS tube, a sixth MOS tube, and an eighth MOS tube;
  • the input end of the second MOS transistor is connected to the control end of the fourth MOS transistor and is connected to a second level signal, the output end of the second MOS transistor is connected to the control end of the sixth MOS transistor and the The Q point is connected, the control terminal of the second MOS tube is connected to the output terminal of the first GOA driving unit of the n+2th stage; the input terminal of the third MOS tube is connected to the n+1th stage clock signal, The input end of the fourth MOS transistor is connected to the n-1 level clock signal, the control end of the third MOS switch is connected to the first level signal, and the output end of the third MOS transistor is connected to the fourth The output terminal of the MOS tube is connected to and connected to the control terminal of the eighth MOS tube, the input terminal of the eighth MOS tube is connected to a high-level signal, and the output terminal of the eighth MOS tube is connected to the sixth MOS tube.
  • the input end of the tube and the control end of the pull-down module are connected to point P.
  • the fingerprint recognition drive circuit described in the embodiment of the present application it further includes a reset MOS tube.
  • the input terminal of the reset MOS tube is connected to the control terminal and a reset signal is connected.
  • the output terminal of the reset MOS tube is Click to connect.
  • the embodiment of the present application realizes the level transmission between each drive area by setting a level transmission unit in each drive area, and the activation of each first GOA drive unit in the drive area, so that only one level transmission signal is needed.
  • the line can realize the control of multiple driving areas, can reduce the number of level transmission signal lines, thereby reducing the width of the non-display area, and can increase the screen-to-body ratio.
  • FIG. 1 is a schematic diagram of the first structure of a fingerprint identification driving circuit provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a second structure of a fingerprint identification driving circuit provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of a third structure of a fingerprint identification driving circuit provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a specific circuit structure of a fingerprint recognition driving circuit provided by an embodiment of the application.
  • FIG. 1 is a schematic diagram of the first structure of a fingerprint identification driving circuit provided by an embodiment of the present application.
  • the fingerprint identification driving circuit includes: a level transmission signal line 10 and a plurality of driving areas 20.
  • the level transmission signal line 10 is used to provide a level transmission signal.
  • each drive area 20 is provided with a level transmission unit 21 and a plurality of first GOA drive units 22; the level transmission units 21 of the plurality of drive areas 20 are sequentially cascaded, and a plurality of the same drive area 20
  • the first GOA driving units 22 are sequentially cascaded.
  • Each of the level transmission units 21 is connected to the level transmission signal line 10 to turn on the first GOA driving unit 22 of the first level in the corresponding driving area 20 according to the level transmission signal, and each of the first GOA The driving unit 22 is used to drive the fingerprint identification unit of the corresponding row.
  • Each level transmission unit 21 is also used to output an opening signal to the next level transmission unit 21 to turn on the next level transmission unit 21.
  • a level transmission unit 21 is provided in each drive area 20 to realize the level transmission between the drive areas 20 and the activation of each first GOA drive unit 22 in the drive area 20, so as to realize that only need
  • One level transmission signal line can realize the control of multiple driving areas 20, which can reduce the number of level transmission signal lines, thereby reducing the width of the non-display area, and can increase the screen-to-body ratio.
  • FIG. 2 is a schematic diagram of the second structure of the fingerprint identification driving circuit provided by the embodiment of the present application.
  • the stage transmission unit 21 includes a second GOA driving unit 212 and a switch unit 211.
  • the second GOA drive unit 212 of each stage transfer unit 21 is connected to the second GOA drive unit 211 of the next stage transfer unit 21 to output a turn-on signal to the second GOA of the next stage transfer unit 21
  • the driving unit 211 makes the second GOA driving unit 212 of the next stage transfer unit 21 turn on.
  • the input terminal of the switch unit 211 is connected to the stage transmission signal line 10, and the second GOA driving unit 212 of each stage transmission unit 21 is connected to the control terminal of the switch unit 211 to output a turn-on signal to the switch
  • the unit 211 turns on the switch unit 211 so that the output level of the switch unit 211 transmits a signal to the first GOA driving unit 22 corresponding to the first level of the driving area 20, so that the corresponding first GOA driving unit of the first level 22.
  • the first GOA driving unit 22 of the first level sends to turn on the first GOA driving unit 22 of the second level, so as to start the fingerprint recognition of another row.
  • the unit is scanned. Until the scanning of each row of fingerprint identification units corresponding to the drive area 20 is completed.
  • the switch unit 211 is a thin film field effect transistor.
  • the switch unit 211 is an N-type thin film field effect transistor.
  • it can also be a P-type thin film field effect transistor.
  • the first GOA driving unit 22 and the second GOA driving unit 212 have the same circuit structure. Of course, it can be different.
  • the first GOA driving unit 22 includes: a pull-up control module 221, a pull-up module 222, a pull-down module 223, and a pull-down maintenance module 224.
  • the input end of the pull-up control module 221 is connected to the first level signal Gn-2
  • the output end of the pull-up control module 221 and the control end of the pull-up module 222 are connected to point Q
  • the upper One end of the pull module 222 is connected to the clock signal CKn
  • the output terminal of the pull module 222 is used as the output port of the first GOA driving unit 22 to output the scan signal of the current stage.
  • the input terminal of the pull-down module 223 is connected to the output terminal of the pull-up module 222
  • the output terminal of the pull-down module 223 is connected to the preset low level line VGL
  • the control terminal of the pull-down module 223 is connected to the pull-down maintaining module
  • the output end of the 224 is connected.
  • the control end of the pull-down maintaining module 224 is connected to the first level signal U2D and the second level signal D2U, and outputs pull-down sustaining under the control of the first level signal and the second level signal The signal is sent to the control terminal of the pull-down module 223.
  • the first GOA driving unit 22 further includes a first capacitor C1, one end of the first capacitor C1 is connected to the Q point, and the other end of the first capacitor C1 is connected to a preset low voltage line VGL.
  • the pull-up module 222 includes a seventh MOS transistor NT7 and a ninth MOS transistor NT9; the input end of the seventh MOS transistor is connected to the Q point, and the output end of the seventh MOS transistor NT7 is connected to the ninth MOS transistor.
  • the control terminal of the tube NT9 is connected, the input terminal of the ninth MOS tube NT9 is connected to the clock signal, the output terminal of the ninth MOS tube NT9 is connected to the input terminal of the pull-down module 223, and the seventh MOS tube
  • the control end of the tube NT7 is connected to a preset high level signal.
  • the pull-down module 223 includes a tenth MOS transistor NT10, the input terminal of the tenth MOS transistor NT10 is connected to the output terminal of the pull-up module 221, and the output terminal of the tenth MOS transistor NT10 is connected to a preset low voltage Line VGL, the control terminal of the tenth MOS transistor NT10 is connected to the pull-down maintaining module 224.
  • the pull-down sustaining module 224 includes a second MOS transistor NT2, a third MOS transistor NT3, a fourth MOS transistor NT4, a fifth MOS transistor NT5, a sixth MOS transistor NT6, and an eighth MOS transistor NT8.
  • the input end of the second MOS transistor is connected to the control end of the fourth MOS transistor and is connected to a second level signal
  • the output end of the second MOS transistor is connected to the control end of the sixth MOS transistor and The Q point is connected
  • the control terminal of the second MOS tube is connected to the output terminal of the first GOA driving unit of the n+2 stage
  • the input terminal of the third MOS tube is connected to the n+1 stage clock signal
  • the input terminal of the fourth MOS transistor is connected to the n-1 level clock signal
  • the control terminal of the third MOS switch is connected to the first level signal
  • the output terminal of the third MOS transistor is connected to the first level signal.
  • the output ends of the four MOS transistors are connected to and connected to the control end of the eighth MOS transistor, the input end of the eighth MOS transistor is connected to a high-level signal, and the output end of the eighth MOS transistor is connected to the sixth MOS transistor.
  • the input terminal of the MOS tube and the control terminal of the pull-down module are connected to point P.
  • the pull-down maintenance module 224 further includes a reset MOS transistor NT14.
  • the input terminal of the reset MOS transistor NT14 is connected to the control terminal and receives a reset signal reset.
  • the output terminal of the reset MOS transistor NT14 is connected to the control terminal. P point connection.
  • the pull-down maintenance module 224 further includes a second capacitor C2, one end of the second capacitor C2 is connected to point P, and the other end of the second capacitor C2 is connected to the preset low voltage line VGL.
  • the pull-down sustaining module 224 further includes an eleventh MOS transistor NT11, a twelfth MOS transistor NT12, and a thirteenth MOS transistor NT13.
  • the input terminal of the eleventh MOS transistor NT11 is connected to the common node of the pull-up module and the pull-down module.
  • the output terminal and control terminal of the eleventh MOS transistor NT11 are connected to the control terminal of the twelfth MOS transistor NT12, and the input terminal of the twelfth MOS transistor NT12 is connected to the point P.
  • the output terminal is connected to the preset low voltage line VGL.
  • the input terminal of the thirteenth MOS transistor NT13 is connected to the common node of the pull-up module and the pull-down module, and the output terminal of the thirteenth MOS transistor NT13 is connected to the preset low voltage line VGL.
  • the control end of the thirteenth MOS transistor NT13 is connected to the GAS2 signal, and the control end of the twelfth MOS transistor NT12 is connected to the GAS1 signal. Both the GAS2 signal and the GAS1 signal are used to control the corresponding MOS tube to be turned on or off, so as to realize the voltage control of the output terminal of the first GOA driving unit.
  • STV_1 to STV_5 are the timing diagrams of the turn-on signals output by the output terminals of the five driving regions of the driving region 1 to the driving region 5, respectively, and the data_STV is the timing diagram of the level transmission signal line. Only when the STV signal and the data_STV signal are turned on at the same time, that is, when the signal is high at the same time, the corresponding first GOA driving unit can be turned on to output the corresponding turn-on signal, so that the thin film transistor of the fingerprint recognition unit of the corresponding row is turned on and turned on. The fingerprint scan operation of the corresponding line.

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Abstract

一种指纹识别驱动电路，包括：一条级传信号线（10）；多个驱动区域（20），每一所述驱动区域（20）设置有一个级传单元（21）以及多个第一GOA驱动单元（22）；每一级传单元（21）均与级传信号线（10）连接，以根据级传信号开启对应驱动区域（20）内的第一级的第一GOA驱动单元（22）；每一级传单元（21）还用于输出开启信号至下一级的级传单元（21），以开启下一级的级传单元（21）。

Description

指纹识别驱动电路 技术领域
本申请涉及指纹识别技术领，具体涉及一种指纹识别驱动电路。
 背景技术
现有指纹驱动方案，是采用利用不同级传信号线来控制不同分区指纹GOA电路。首先，利用显示面板定位指纹的大致位置，然后选择开启某一个分区，这样的话就不用进行全面板的指纹扫描，从而避免处理时间大大增加。然后，通过开启第一级传信号线来进行分区1的扫描。其它STV信号没有开启的分区则不工作。这样的话，级传信号线数量明显增加，使得边框宽度增加。并且，显示面板尺寸增加，或分区数划分较小，都会使得级传信号线数量增加，不利于提高屏占比。
 技术问题
本申请实施例的目的在于提供一种指纹识别驱动电路，可以提高屏占比。
 技术解决方案
本申请实施例提供了一种指纹识别驱动电路，包括：
一条级传信号线，其用于提供级传信号；
多个驱动区域，每一所述驱动区域设置有一个级传单元以及多个第一GOA驱动单元；所述多个驱动区域的级传单元依次级联，同一所述驱动区域内的多个第一GOA驱动单元依次级联；
每一所述级传单元均与级传信号线线连接，以根据所述级传信号开启对应驱动区域内的第一级的第一GOA驱动单元，每一所述第一GOA驱动单元用于驱动对应行的指纹识别单元；
每一级传单元还用于输出开启信号至下一级的级传单元，以开启下一级的级传单元；
所述级传单元包括一第二GOA驱动单元以及一开关单元；
每一所述级传单元的第二GOA驱动单元与下一级的级传单元的第二GOA驱动单元连接，以输出开启信号至下一级的级传单元的第二GOA驱动单元，使得下一级的级传单元的第二GOA驱动单元打开；
所述开关单元的输入端与所述级传信号线连接，每一所述级传单元的第二GOA驱动单元与所述开关单元的控制端连接，以输出开启信号至所述开关单元以将所述开关单元打开，使得所述开关单元输出级传信号给对应驱动区域的第一级的第一GOA驱动单元；
所述第一GOA驱动单元与所述第二GOA驱动单元具有相同的电路结构。
在本申请实施例所述的指纹识别驱动电路中，所述开关单元为薄膜场效应晶体管。
在本申请实施例所述的指纹识别驱动电路中，所述第一GOA驱动单元包括：上拉控制模块、上拉模块、下拉模块以及下拉维持模块；
所述上拉控制模块的输入端接入第一电平信号，所述上拉控制模块的输出端与所述上拉模块的控制端连接于Q点，所述上拉模块的一端接入时钟信号，所述上拉模块的输出端作为所述第一GOA驱动单元的输出端口；
所述下拉模块的输入端与所述上拉模块的输出端连接，所述下拉模块的输出端接预设低电平线，所述下拉模块的控制端与所述下拉维持模块的输出端连接，所述下拉维持模块的控制端接入第一电平信号以及第二电平信号，并在第一电平信号及第二电平信号的控制下输出下拉维持信号至所述下拉模块的控制端。
在本申请实施例所述的指纹识别驱动电路中，所述第一GOA驱动单元还包括第一电容，所述第一电容的一端连接于所述Q点，所述第一电容的另一端连接于预设低电压线。
在本申请实施例所述的指纹识别驱动电路中，所述上拉模块包括第七MOS管以及第九MOS管；
所述第七MOS管的输入端与所述Q点连接，所述第七MOS管的输出端与所述第九MOS管的控制端连接，所述第九MOS管的输入端接入所述时钟信号，所述第九MOS管的输出端与所述下拉模块的输入端连接，所述第七MOS管的控制端接入预设高电平信号。
在本申请实施例所述的指纹识别驱动电路中，所述下拉模块包括第十MOS管，所述第十MOS管的输入端与所述上拉模块的输出端连接，所述第十MOS管的输出端连接预设低电压线，所述第十MOS管的控制端与所述下拉维持模块连接。
在本申请实施例所述的指纹识别驱动电路中，所述下拉维持模块包括第二MOS管、第三MOS管、第四MOS管、第五MOS管、第六MOS管、第八MOS管；
所述第二MOS管的输入端与所述第四MOS管的控制端连接并接入第二电平信号，所述第二MOS管的输出端与所述第六MOS管的控制端以及所述Q点连接，所述第二MOS管的控制端接入第n+2级的第一GOA驱动单元的输出端；所述第三MOS管的输入端接入第n+1级时钟信号，所述第四MOS管的输入端接入第n-1级时钟信号，所述第三MOS关的控制端接入第一电平信号，所述第三MOS管的输出端与所述第四MOS管的输出端连接并与所述第八MOS管的控制端连接，所述第八MOS管的输入端接入高电平信号，所述第八MOS管的输出端与所述第六MOS管的输入端以及所述下拉模块的控制端连接于P点。
在本申请实施例所述的指纹识别驱动电路中，还包括复位MOS管，所述复位MOS管的输入端与控制端连接并接入复位信号，所述复位MOS管的输出端与所述P点连接。
本申请实施例还提供了一种指纹识别驱动电路，包括：
一条级传信号线，其用于提供级传信号；
多个驱动区域，每一所述驱动区域设置有一个级传单元以及多个第一GOA驱动单元；所述多个驱动区域的级传单元依次级联，同一所述驱动区域内的多个第一GOA驱动单元依次级联；
每一所述级传单元均与级传信号线线连接，以根据所述级传信号开启对应驱动区域内的第一级的第一GOA驱动单元，每一所述第一GOA驱动单元用于驱动对应行的指纹识别单元；
每一级传单元还用于输出开启信号至下一级的级传单元，以开启下一级的级传单元。
在本申请实施例所述的指纹识别驱动电路中，所述级传单元包括一第二GOA驱动单元以及一开关单元；
每一所述级传单元的第二GOA驱动单元与下一级的级传单元的第二GOA驱动单元连接，以输出开启信号至下一级的级传单元的第二GOA驱动单元，使得下一级的级传单元的第二GOA驱动单元打开；
所述开关单元的输入端与所述级传信号线连接，每一所述级传单元的第二GOA驱动单元与所述开关单元的控制端连接，以输出开启信号至所述开关单元以将所述开关单元打开，使得所述开关单元输出级传信号给对应驱动区域的第一级的第一GOA驱动单元。
在本申请实施例所述的指纹识别驱动电路中，所述开关单元为薄膜场效应晶体管。
在本申请实施例所述的指纹识别驱动电路中，所述第一GOA驱动单元与所述第二GOA驱动单元具有相同的电路结构。
在本申请实施例所述的指纹识别驱动电路中，所述第一GOA驱动单元包括：上拉控制模块、上拉模块、下拉模块以及下拉维持模块；
所述上拉控制模块的输入端接入第一电平信号，所述上拉控制模块的输出端与所述上拉模块的控制端连接于Q点，所述上拉模块的一端接入时钟信号，所述上拉模块的输出端作为所述第一GOA驱动单元的输出端口；
所述下拉模块的输入端与所述上拉模块的输出端连接，所述下拉模块的输出端接预设低电平线，所述下拉模块的控制端与所述下拉维持模块的输出端连接，所述下拉维持模块的控制端接入第一电平信号以及第二电平信号，并在第一电平信号及第二电平信号的控制下输出下拉维持信号至所述下拉模块的控制端。
在本申请实施例所述的指纹识别驱动电路中，所述第一GOA驱动单元还包括第一电容，所述第一电容的一端连接于所述Q点，所述第一电容的另一端连接于预设低电压线。
在本申请实施例所述的指纹识别驱动电路中，所述上拉模块包括第七MOS管以及第九MOS管；
所述第七MOS管的输入端与所述Q点连接，所述第七MOS管的输出端与所述第九MOS管的控制端连接，所述第九MOS管的输入端接入所述时钟信号，所述第九MOS管的输出端与所述下拉模块的输入端连接，所述第七MOS管的控制端接入预设高电平信号。
在本申请实施例所述的指纹识别驱动电路中，所述下拉模块包括第十MOS管，所述第十MOS管的输入端与所述上拉模块的输出端连接，所述第十MOS管的输出端连接预设低电压线，所述第十MOS管的控制端与所述下拉维持模块连接。
在本申请实施例所述的指纹识别驱动电路中，所述下拉维持模块包括第二MOS管、第三MOS管、第四MOS管、第五MOS管、第六MOS管、第八MOS管；
所述第二MOS管的输入端与所述第四MOS管的控制端连接并接入第二电平信号，所述第二MOS管的输出端与所述第六MOS管的控制端以及所述Q点连接，所述第二MOS管的控制端接入第n+2级的第一GOA驱动单元的输出端；所述第三MOS管的输入端接入第n+1级时钟信号，所述第四MOS管的输入端接入第n-1级时钟信号，所述第三MOS关的控制端接入第一电平信号，所述第三MOS管的输出端与所述第四MOS管的输出端连接并与所述第八MOS管的控制端连接，所述第八MOS管的输入端接入高电平信号，所述第八MOS管的输出端与所述第六MOS管的输入端以及所述下拉模块的控制端连接于P点。
在本申请实施例所述的指纹识别驱动电路中，还包括复位MOS管，所述复位MOS管的输入端与控制端连接并接入复位信号，所述复位MOS管的输出端与所述P点连接。
 有益效果
本申请实施例通过采用在每一驱动区域设置一个级传单元来实现各个驱动区域之间的级传，以及驱动区域内的各个第一GOA驱动单元的开启，从而实现只需要一根级传信号线即可实现对多个驱动区域的控制，可以减少级传信号线的条数，从而降低非显示区域的宽度，可以提高屏占比。
 附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，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相关的附图。
图1为本申请实施例提供的指纹识别驱动电路的第一种结构示意图。
图2为本申请实施例提供的指纹识别驱动电路的第二种结构示意图。
图3为本申请实施例提供的指纹识别驱动电路的第三种结构示意图。
图4为本申请实施例提供的指纹识别驱动电路的具体电路结构示意图。
 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，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请的实施例，本领域技术人员在没有做出创造性劳动的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。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。同时，在本申请的描述中，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
请参照图1，图1为本申请实施例提供的指纹识别驱动电路的第一种结构示意图。其中，该指纹识别驱动电路，包括：一条级传信号线10以及多个驱动区域20。
其中，该级传信号线10用于提供级传信号。其中，每一驱动区域20设置有一个级传单元21以及多个第一GOA驱动单元22；所述多个驱动区域20的级传单元21依次级联，同一所述驱动区域20内的多个第一GOA驱动单元22依次级联。该每一所述级传单元21均与级传信号线10连接，以根据所述级传信号开启对应驱动区域20内的第一级的第一GOA驱动单元22，每一所述第一GOA驱动单元22用于驱动对应行的指纹识别单元。每一级传单元21还用于输出开启信号至下一级的级传单元21，以开启下一级的级传单元21。
本申请实施例通过采用在每一驱动区域20设置一个级传单元21来实现各个驱动区域20之间的级传，以及驱动区域20内的各个第一GOA驱动单元22的开启，从而实现只需要一根级传信号线即可实现对多个驱动区域20的控制，可以减少级传信号线的条数，从而降低非显示区域的宽度，可以提高屏占比。
具体地，在一些实施例中，请参照图2，图2为本申请实施例提供的指纹识别驱动电路的第二种结构示意图。该级传单元21包括一第二GOA驱动单元212以及一开关单元211。每一所述级传单元21的第二GOA驱动单元212与下一级的级传单元21的第二GOA驱动单元211连接，以输出开启信号至下一级的级传单元21的第二GOA驱动单元211，使得下一级的级传单元21的第二GOA驱动单元212打开。开关单元211的输入端与所述级传信号线10连接，每一所述级传单元21的第二GOA驱动单元212与所述开关单元211的控制端连接，以输出开启信号至所述开关单元211以将所述开关单元211打开，使得所述开关单元211输出级传信号给对应驱动区域20的第一级的第一GOA驱动单元22，使得对应的第一级的第一GOA驱动单元22开始对应行的指纹识别单元的扫描，在该行扫描完成后，该第一级的第一GOA驱动单元22发送开启第二级的第一GOA驱动单元22，从而开始对另一行的指纹识别单元进行扫描。直至完成对该驱动区域20的对应的各行指纹识别单元完成扫描。
在一些实施例中，该开关单元211为薄膜场效应晶体管。例如，在本实施例中，该开关单元211为N型薄膜场效应晶体管，当然，其也可以采用P型薄膜场效应晶体管。
可以理解地，在本实施例中，第一GOA驱动单元22与所述第二GOA驱动单元212具有相同的电路结构。当然，也可以不相同。
请同时参照图3，下面对该第一GOA驱动单元22的具体电路结构进行详细描述。其中，该第一GOA驱动单元22包括：上拉控制模块221、上拉模块222、下拉模块223以及下拉维持模块224。
其中，该上拉控制模块221的输入端接入第一电平信号Gn-2，所述上拉控制模块221的输出端与所述上拉模块222的控制端连接于Q点，所述上拉模块222的一端接入时钟信号CKn，所述上拉模块222的输出端作为所述第一GOA驱动单元22的输出端口，输出本级的扫描信号。该下拉模块223的输入端与所述上拉模块222的输出端连接，所述下拉模块223的输出端接预设低电平线VGL，所述下拉模块223的控制端与所述下拉维持模块224的输出端连接，所述下拉维持模块224的控制端接入第一电平信号U2D以及第二电平信号D2U，并在第一电平信号及第二电平信号的控制下输出下拉维持信号至所述下拉模块223的控制端。
具体地，该第一GOA驱动单元22还包括第一电容C1，所述第一电容C1的一端连接于所述Q点，所述第一电容C1的另一端连接于预设低电压线VGL。
其中，该上拉模块222包括第七MOS管NT7以及第九MOS管NT9；第七MOS管的输入端与所述Q点连接，所述第七MOS管NT7的输出端与所述第九MOS管NT9的控制端连接，所述第九MOS管NT9的输入端接入所述时钟信号，所述第九MOS管NT9的输出端与所述下拉模块223的输入端连接，所述第七MOS管NT7的控制端接入预设高电平信号。
其中，该下拉模块223包括第十MOS管NT10，所述第十MOS管NT10的输入端与所述上拉模块221的输出端连接，所述第十MOS管NT10的输出端连接预设低电压线VGL，所述第十MOS管NT10的控制端与所述下拉维持模块224连接。
其中，该下拉维持模块224包括第二MOS管NT2、第三MOS管NT3、第四MOS管NT4、第五MOS管NT5、第六MOS管NT6、第八MOS管NT8。其中，该第二MOS管的输入端与所述第四MOS管的控制端连接并接入第二电平信号，所述第二MOS管的输出端与所述第六MOS管的控制端以及所述Q点连接，所述第二MOS管的控制端接入第n+2级的第一GOA驱动单元的输出端；所述第三MOS管的输入端接入第n+1级时钟信号，所述第四MOS管的输入端接入第n-1级时钟信号，所述第三MOS关的控制端接入第一电平信号，所述第三MOS管的输出端与所述第四MOS管的输出端连接并与所述第八MOS管的控制端连接，所述第八MOS管的输入端接入高电平信号，所述第八MOS管的输出端与所述第六MOS管的输入端以及所述下拉模块的控制端连接于P点。
在一些实施例中，该下拉维持模块224还包括复位MOS管NT14，所述复位MOS管NT14的输入端与控制端连接并接入复位信号reset，所述复位MOS管NT14的输出端与所述P点连接。
可以理解地，在一些实施例中，该下拉维持模块224还包括第二电容C2，该第二电容C2的一端连接于P点，该第二电容C2的另一端连接预设低电压线VGL。
可以理解地，在一些实施例中，该下拉维持模块224还包括第十一MOS管NT11、第十二MOS管NT12以及第十三MOS管NT13。该第十一MOS管NT11的输入端与该上拉模块以及下拉模块的公共节点连接。该第十一MOS管NT11的输出端及控制端与该第十二MOS管NT12的控制端连接，该第十二MOS管NT12的输入端与该P点连接，该第十二MOS管NT12的输出端接预设低电压线VGL。该第十三MOS管NT13的输入端与该上拉模块及下拉模块的公共节点连接，第十三MOS管NT13的输出端接预设低电压线VGL。该第十三MOS管NT13的控制端接入GAS2信号，该第十二MOS管NT12的控制端接入GAS1信号。GAS2信号以及GAS1信号均用于控制对应的MOS管进行打开或者关闭，从而实现对该第一GOA驱动单元的输出端的电压控制。
如图4所示，其中，STV_1至STV_5分别为驱动区域1至驱动区域5这五个驱动区域的输出端输出的开启信号的时序图，该data_STV为该级传信号线的时序图。只有当STV信号和data_STV信号同时打开，也即是同时为高电平，才可以使得对应的第一GOA驱动单元开启以输出对应的开启信号，使得对应行的指纹识别单元的薄膜晶体管开启，开启对应行的指纹扫描操作。
在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。
以上所述仅为本申请的实施例而已，并不用于限制本申请的保护范围，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (18)

  1. 一种指纹识别驱动电路，其包括：
    一条级传信号线，其用于提供级传信号；
    多个驱动区域，每一所述驱动区域设置有一个级传单元以及多个第一GOA驱动单元；所述多个驱动区域的级传单元依次级联，同一所述驱动区域内的多个第一GOA驱动单元依次级联；
    每一所述级传单元均与级传信号线线连接，以根据所述级传信号开启对应驱动区域内的第一级的第一GOA驱动单元，每一所述第一GOA驱动单元用于驱动对应行的指纹识别单元；
    每一级传单元还用于输出开启信号至下一级的级传单元，以开启下一级的级传单元；
    所述级传单元包括一第二GOA驱动单元以及一开关单元；
    每一所述级传单元的第二GOA驱动单元与下一级的级传单元的第二GOA驱动单元连接，以输出开启信号至下一级的级传单元的第二GOA驱动单元，使得下一级的级传单元的第二GOA驱动单元打开；
    所述开关单元的输入端与所述级传信号线连接，每一所述级传单元的第二GOA驱动单元与所述开关单元的控制端连接，以输出开启信号至所述开关单元以将所述开关单元打开，使得所述开关单元输出级传信号给对应驱动区域的第一级的第一GOA驱动单元；
    所述第一GOA驱动单元与所述第二GOA驱动单元具有相同的电路结构。
  2. 根据权利要求1所述的指纹识别驱动电路，其中，所述开关单元为薄膜场效应晶体管。
  3. 根据权利要求1所述的指纹识别驱动电路，其中，所述第一GOA驱动单元包括：上拉控制模块、上拉模块、下拉模块以及下拉维持模块；
    所述上拉控制模块的输入端接入第一电平信号，所述上拉控制模块的输出端与所述上拉模块的控制端连接于Q点，所述上拉模块的一端接入时钟信号，所述上拉模块的输出端作为所述第一GOA驱动单元的输出端口；
    所述下拉模块的输入端与所述上拉模块的输出端连接，所述下拉模块的输出端接预设低电平线，所述下拉模块的控制端与所述下拉维持模块的输出端连接，所述下拉维持模块的控制端接入第一电平信号以及第二电平信号，并在第一电平信号及第二电平信号的控制下输出下拉维持信号至所述下拉模块的控制端。
  4. 根据权利要求3所述的指纹识别驱动电路，其中，所述第一GOA驱动单元还包括第一电容，所述第一电容的一端连接于所述Q点，所述第一电容的另一端连接于预设低电压线。
  5. 根据权利要求3所述的指纹识别驱动电路，其中，所述上拉模块包括第七MOS管以及第九MOS管；
    所述第七MOS管的输入端与所述Q点连接，所述第七MOS管的输出端与所述第九MOS管的控制端连接，所述第九MOS管的输入端接入所述时钟信号，所述第九MOS管的输出端与所述下拉模块的输入端连接，所述第七MOS管的控制端接入预设高电平信号。
  6. 根据权利要求3所述的指纹识别驱动电路，其中，所述下拉模块包括第十MOS管，所述第十MOS管的输入端与所述上拉模块的输出端连接，所述第十MOS管的输出端连接预设低电压线，所述第十MOS管的控制端与所述下拉维持模块连接。
  7. 根据权利要求3所述的指纹识别驱动电路，其中，所述下拉维持模块包括第二MOS管、第三MOS管、第四MOS管、第五MOS管、第六MOS管、第八MOS管；
    所述第二MOS管的输入端与所述第四MOS管的控制端连接并接入第二电平信号，所述第二MOS管的输出端与所述第六MOS管的控制端以及所述Q点连接，所述第二MOS管的控制端接入第n+2级的第一GOA驱动单元的输出端；所述第三MOS管的输入端接入第n+1级时钟信号，所述第四MOS管的输入端接入第n-1级时钟信号，所述第三MOS关的控制端接入第一电平信号，所述第三MOS管的输出端与所述第四MOS管的输出端连接并与所述第八MOS管的控制端连接，所述第八MOS管的输入端接入高电平信号，所述第八MOS管的输出端与所述第六MOS管的输入端以及所述下拉模块的控制端连接于P点。
  8. 根据权利要求7所述的指纹识别驱动电路，其中，还包括复位MOS管，所述复位MOS管的输入端与控制端连接并接入复位信号，所述复位MOS管的输出端与所述P点连接。
  9. 一种指纹识别驱动电路，其包括：
    一条级传信号线，其用于提供级传信号；
    多个驱动区域，每一所述驱动区域设置有一个级传单元以及多个第一GOA驱动单元；所述多个驱动区域的级传单元依次级联，同一所述驱动区域内的多个第一GOA驱动单元依次级联；
    每一所述级传单元均与级传信号线线连接，以根据所述级传信号开启对应驱动区域内的第一级的第一GOA驱动单元，每一所述第一GOA驱动单元用于驱动对应行的指纹识别单元；
    每一级传单元还用于输出开启信号至下一级的级传单元，以开启下一级的级传单元。
  10. 根据权利要求9所述的指纹识别驱动电路，其中，所述级传单元包括一第二GOA驱动单元以及一开关单元；
    每一所述级传单元的第二GOA驱动单元与下一级的级传单元的第二GOA驱动单元连接，以输出开启信号至下一级的级传单元的第二GOA驱动单元，使得下一级的级传单元的第二GOA驱动单元打开；
    所述开关单元的输入端与所述级传信号线连接，每一所述级传单元的第二GOA驱动单元与所述开关单元的控制端连接，以输出开启信号至所述开关单元以将所述开关单元打开，使得所述开关单元输出级传信号给对应驱动区域的第一级的第一GOA驱动单元。
  11. 根据权利要求9所述的指纹识别驱动电路，其中，所述开关单元为薄膜场效应晶体管。
  12. 根据权利要求9所述的指纹识别驱动电路，其中，所述第一GOA驱动单元与所述第二GOA驱动单元具有相同的电路结构。
  13. 根据权利要求9所述的指纹识别驱动电路，其中，所述第一GOA驱动单元包括：上拉控制模块、上拉模块、下拉模块以及下拉维持模块；
    所述上拉控制模块的输入端接入第一电平信号，所述上拉控制模块的输出端与所述上拉模块的控制端连接于Q点，所述上拉模块的一端接入时钟信号，所述上拉模块的输出端作为所述第一GOA驱动单元的输出端口；
    所述下拉模块的输入端与所述上拉模块的输出端连接，所述下拉模块的输出端接预设低电平线，所述下拉模块的控制端与所述下拉维持模块的输出端连接，所述下拉维持模块的控制端接入第一电平信号以及第二电平信号，并在第一电平信号及第二电平信号的控制下输出下拉维持信号至所述下拉模块的控制端。
  14. 根据权利要求13所述的指纹识别驱动电路，其中，所述第一GOA驱动单元还包括第一电容，所述第一电容的一端连接于所述Q点，所述第一电容的另一端连接于预设低电压线。
  15. 根据权利要求13所述的指纹识别驱动电路，其中，所述上拉模块包括第七MOS管以及第九MOS管；
    所述第七MOS管的输入端与所述Q点连接，所述第七MOS管的输出端与所述第九MOS管的控制端连接，所述第九MOS管的输入端接入所述时钟信号，所述第九MOS管的输出端与所述下拉模块的输入端连接，所述第七MOS管的控制端接入预设高电平信号。
  16. 根据权利要求13所述的指纹识别驱动电路，其中，所述下拉模块包括第十MOS管，所述第十MOS管的输入端与所述上拉模块的输出端连接，所述第十MOS管的输出端连接预设低电压线，所述第十MOS管的控制端与所述下拉维持模块连接。
  17. 根据权利要求13所述的指纹识别驱动电路，其中，所述下拉维持模块包括第二MOS管、第三MOS管、第四MOS管、第五MOS管、第六MOS管、第八MOS管；
    所述第二MOS管的输入端与所述第四MOS管的控制端连接并接入第二电平信号，所述第二MOS管的输出端与所述第六MOS管的控制端以及所述Q点连接，所述第二MOS管的控制端接入第n+2级的第一GOA驱动单元的输出端；所述第三MOS管的输入端接入第n+1级时钟信号，所述第四MOS管的输入端接入第n-1级时钟信号，所述第三MOS关的控制端接入第一电平信号，所述第三MOS管的输出端与所述第四MOS管的输出端连接并与所述第八MOS管的控制端连接，所述第八MOS管的输入端接入高电平信号，所述第八MOS管的输出端与所述第六MOS管的输入端以及所述下拉模块的控制端连接于P点。
  18. 根据权利要求17所述的指纹识别驱动电路，其中，还包括复位MOS管，所述复位MOS管的输入端与控制端连接并接入复位信号，所述复位MOS管的输出端与所述P点连接。
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