CN112639703A - 超声波感测电路及其驱动方法、探测基板和触控面板 - Google Patents

超声波感测电路及其驱动方法、探测基板和触控面板 Download PDF

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CN112639703A
CN112639703A CN201980000744.4A CN201980000744A CN112639703A CN 112639703 A CN112639703 A CN 112639703A CN 201980000744 A CN201980000744 A CN 201980000744A CN 112639703 A CN112639703 A CN 112639703A
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transistor
node
coupled
voltage
terminal
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CN112639703B (zh
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杨盛际
董学
陈小川
王辉
卢鹏程
黄冠达
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BOE Technology Group Co Ltd
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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
    • G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • 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

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

公开了一种超声波感测电路(200)，其包括超声波传感电路(210)、输入电路(220)、复位电路(230)、存储电路(240)、选择电路(250)、源极跟随器(SF)和补偿电路(260)。超声波传感电路(210)产生与所接收的超声波信号对应的感测电压以提供给第一节点(J1)。输入电路(220)根据第一控制信号(CTR1)，将第一节点(J1)的电压提供给第二节点(J2)。复位电路(230)根据复位控制信号(RESET)，对第二节点(J2)的电压进行复位。存储电路(240)存储第二节点(J2)与第二电源电压端之间的电压差。选择电路(250)根据选择信号(EM)，将第三电源电压(V3)提供给第三节点(J3)。源极跟随器(SF)通过输出端(OUTPUT)输出对应于在其第一极与控制极之间的电压的电流。补偿电路(260)根据感测电压和第三电源电压(V3)，向源极跟随器(SF)控制极提供补偿的感测电压。

Description

PCT国内申请，说明书已公开。

Claims (12)

  1. PCT国内申请，权利要求书已公开。
CN201980000744.4A 2019-05-28 2019-05-28 超声波感测电路及其驱动方法、探测基板和触控面板 Active CN112639703B (zh)

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DE102020120716A1 (de) * 2020-08-05 2022-02-10 Elmos Semiconductor Se Transformatorlose Ansteuerung eines Ultraschallwandlers mit nur einem externen Energiespeicher
CN114113329A (zh) * 2021-11-25 2022-03-01 京东方科技集团股份有限公司 超声控制电路、其驱动方法及超声波探测装置

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CN108845323A (zh) * 2018-04-28 2018-11-20 京东方科技集团股份有限公司 面板以及使用面板确定目标物体的位置的方法
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JP2011019757A (ja) * 2009-07-16 2011-02-03 Panasonic Corp 超音波診断装置
CN206461599U (zh) * 2016-11-29 2017-09-01 南京宁禄科技有限公司 一种超声波信号数字接收装置
CN108174124A (zh) * 2018-01-29 2018-06-15 京东方科技集团股份有限公司 像素电路及其驱动方法以及探测器
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US11295105B2 (en) 2022-04-05
WO2020237504A1 (zh) 2020-12-03
US20210406498A1 (en) 2021-12-30
EP3979053B1 (en) 2024-02-28
CN112639703B (zh) 2024-03-15
EP3979053A1 (en) 2022-04-06
EP3979053A4 (en) 2023-01-11

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