CN113168268A - 触控检测方法、触控检测电路、触控芯片以及电子设备 - Google Patents

触控检测方法、触控检测电路、触控芯片以及电子设备 Download PDF

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CN113168268A
CN113168268A CN201980002773.4A CN201980002773A CN113168268A CN 113168268 A CN113168268 A CN 113168268A CN 201980002773 A CN201980002773 A CN 201980002773A CN 113168268 A CN113168268 A CN 113168268A
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signal
touch
frequency
real
display panel
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CN113168268B (zh
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蒋宏
李国炮
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology 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
    • G06F3/0416—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
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • 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
    • 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
    • G06F3/04182—Filtering of noise external to the device and not generated by digitiser components
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/10—Indirect frequency synthesis using a frequency multiplier in the phase-locked loop or in the reference signal path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种触控检测方法、触控检测电路、触控芯片以及电子设备。触控检测方法包括：接收触控显示面板发送的实时同步信号(S1)；获取触控芯片工作环境中噪声信号的频率(S2)；根据所述噪声信号的频率，设置所述打码驱动信号的频率，根据所述打码驱动信号的频率生成打码驱动信号，并输出所述打码驱动信号至所述触控显示面板的驱动电极(S3)；根据所述实时同步信号，生成选通信号(S4)；接收所述触控显示面板的感应电极的信号，根据所述选通信号和所述感应电极的信号，输出检测结果(S5)。该方法受显示器显示驱动操作和触控芯片工作环境中噪声信号的影响很小，改善了最终检测出有效信号的信号噪声比，使触摸灵敏度大幅提升。

Description

PCT国内申请，说明书已公开。

Claims (32)

  1. PCT国内申请，权利要求书已公开。
CN201980002773.4A 2019-11-08 2019-11-08 触控检测方法、触控检测电路、触控芯片以及电子设备 Active CN113168268B (zh)

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KR20230067740A (ko) * 2021-11-08 2023-05-17 삼성디스플레이 주식회사 표시 장치
CN114610175B (zh) * 2022-03-07 2024-02-13 昆山国显光电有限公司 触控显示面板的驱动方法、触控驱动芯片及触控显示装置

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* Cited by examiner, † Cited by third party
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CN114925014A (zh) * 2022-05-24 2022-08-19 深圳市爱协生科技有限公司 一种自适应抗强电干扰的电容触摸串口屏
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WO2021088083A1 (zh) 2021-05-14
US11755148B2 (en) 2023-09-12
CN113168268B (zh) 2023-05-26

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