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公开(公告)号：US11775108B2
公开(公告)日：2023-10-03
申请号：US17246644
申请日：2021-05-02
发明人： Lianghua Mo , Xinxi Jiang , Junqiao Liu
IPC分类号： G06F3/041 , G02F1/1333 , G02F1/1343 , G09G3/36 , G06F3/044
CPC分类号： G06F3/04166 , G02F1/13338 , G02F1/13439 , G06F3/0412 , G09G3/3655 , G09G3/3677 , G09G3/3688 , G06F3/0443 , G09G2310/0248 , G09G2310/0281 , G09G2310/08
摘要： A touch display apparatus, a corresponding driving circuit, and a driving method are provided. The touch display apparatus includes a driving circuit configured to, during the touch sensing stage, provide a first signal to a common electrode for realizing touch detection during the touch sensing stage, a second signal used to control a thin film transistor of the touch display apparatus to be switched off and is used to decrease charge and discharge capacity of a capacitor formed by the common electrode and the gate line, and a third signal used to decrease charge and discharge capacity of a capacitor formed by the common electrode and a data line. The third signal is used to control the data line to enter a floating state during the touch sensing stage.
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公开(公告)号：US10133415B2
公开(公告)日：2018-11-20
申请号：US15123959
申请日：2014-06-23
发明人： Lianghua Mo , Xinxi Jiang , Ningning Cai
摘要： Provided is a driving circuit for a touch display apparatus. The driving circuit includes: a main control unit, providing image data for image display at a first speed; a driving unit, receiving the image data and sending display data to the touch display apparatus according to the received image data; a data buffering module, disposed in the driving unit, sending the display data at a second speed higher than the first speed, and forming, due to the difference between the second speed and the first speed, a pause time for stopping sending the display data to the touch display apparatus during the process that the main control unit provides the image data; and a touch detection unit, performing touch detection of the touch display apparatus in the pause time.
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公开(公告)号：US09747489B2
公开(公告)日：2017-08-29
申请号：US15110798
申请日：2014-01-14
发明人： Lianghua Mo , Haijun Hu
IPC分类号： G06K9/00
CPC分类号： G06K9/0002 , G06K9/00107
摘要： Provided are an electric field type fingerprint identification apparatus and a state control method and a prosthesis identification method. The electric field type fingerprint identification apparatus includes a signal acquisition module and a signal processing module. In a case that a measuring state signal processing unit is electrically connected to a signal acquisition unit, a to-be-measured state signal processing unit is at least electrically connected to at least one signal acquisition unit peripheral to the signal acquisition unit in a measuring state. Charging and discharging processes of sensing capacitors electrically connected to the measuring state signal processing unit and the to-be-measured state signal processing unit are coordinated to restrain charging and discharging quantities of a parasitic capacitor between the signal acquisition unit in the measuring state and the signal acquisition unit in a to-be-measured state.
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公开(公告)号：US10073562B2
公开(公告)日：2018-09-11
申请号：US15108213
申请日：2014-02-14
发明人： Lianghua Mo , Xinxi Jiang , Junqiao Liu
IPC分类号： G06F3/041 , G02F1/1343 , G09G3/36 , G06F3/044 , G02F1/1333
CPC分类号： G06F3/0418 , G02F1/13338 , G02F1/13439 , G06F3/0412 , G06F3/0416 , G06F3/044 , G09G3/3655 , G09G3/3677 , G09G3/3688 , G09G2310/0248 , G09G2310/0281 , G09G2310/08
摘要： A touch display apparatus, a corresponding driving circuit, and a driving method. The touch display apparatus includes a common electrode between a first substrate and a second substrate, and a driving circuit used as a touch sensing electrode during a touch sensing phase. The driving circuit is used for providing a first signal for touch detection to the common electrode. The driving circuit is also used for providing a second signal to a gate line during the touch sensing phase, said second signal enabling a thin-film transistor to be in off mode and decreasing the charge-discharge capacity of a capacitor formed by the common electrode and a gate line. The driving circuit is also used for providing a third signal during the touch sensing phase, the third signal decreasing the charge-discharge capacity of a capacitor formed by the common electrode and a data line.
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