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公开(公告)号：US20190012503A1
公开(公告)日：2019-01-10
申请号：US15870676
申请日：2018-01-12
发明人： Che-Wei WU
CPC分类号： G06K9/0002 , H01L29/94 , H03F3/45076 , H03F3/45932
摘要： A fingerprint sensing circuit and a fingerprint sensing apparatus are provided. The fingerprint sensing circuit includes a sensing electrode; a first converting circuit connected to the sensing electrode and configured to convert a coupling capacitance sensed by the sensing electrode into a drive voltage, where the drive voltage is equal to a sum of a voltage variation converted from the coupling capacitance and a reference voltage; and a second converting circuit configured to generate a sensing current based on the drive voltage, and send the sensing current to a fingerprint signal processor, where the sensing current is equal to a product of a transconductance gain of the second converting circuit and the voltage variation, and the fingerprint signal processor performs fingerprint sensing based on the sensing current. With the fingerprint sensing circuit and the fingerprint sensing apparatus, the detection accuracy can be improved.
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公开(公告)号：US20160334934A1
公开(公告)日：2016-11-17
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 , 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.
摘要翻译： 触摸显示装置，相应的驱动电路和驱动方法。 触摸显示装置包括在第一基板和第二基板之间的公共电极，以及在触摸感测阶段期间用作触摸感测电极的驱动电路。 驱动电路用于向公共电极提供用于触摸检测的第一信号。 驱动电路还用于在触摸感测阶段期间向栅极线提供第二信号，所述第二信号使得薄膜晶体管处于截止模式并且降低由公共电极形成的电容器的充电 - 放电容量 和一条门线。 驱动电路还用于在触摸感测阶段期间提供第三信号，第三信号降低由公共电极和数据线形成的电容器的充电 - 放电容量。
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公开(公告)号：US11150755B2
公开(公告)日：2021-10-19
申请号：US16717585
申请日：2019-12-17
发明人： Ho-Nien Yang , Pi-Chun Yeh , Pei-Hung Hsiao
摘要： A touch and display sensing integrated circuit and a touch display device using the same are provided. The touch display device includes a display and touch sensing integrated circuit and a glass substrate. The glass substrate includes touch/display common voltage electrodes, pixels, pads and conductive lines. Each pixel includes Q sub-pixels. The pads are electrically connected to the touch and display sensing integrated circuit. The Pth and (P+Q+1)th pads are electrically connected to the touch/display common voltage electrode through the corresponding conductive lines, respectively. The (P+1)th to (P+Q)th pads are electrically connected to 1st to Qth sub-pixels of a pixel through the corresponding conductive lines, respectively. The pads are arranged in a first direction, and the conductive lines, which are electrically connected to the pads in a second direction, are non-interlaced.
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公开(公告)号：US10803277B2
公开(公告)日：2020-10-13
申请号：US15870676
申请日：2018-01-12
发明人： Che-Wei Wu
摘要： A fingerprint sensing circuit and a fingerprint sensing apparatus are provided. The fingerprint sensing circuit includes a sensing electrode; a first converting circuit connected to the sensing electrode and configured to convert a coupling capacitance sensed by the sensing electrode into a drive voltage, where the drive voltage is equal to a sum of a voltage variation converted from the coupling capacitance and a reference voltage; and a second converting circuit configured to generate a sensing current based on the drive voltage, and send the sensing current to a fingerprint signal processor, where the sensing current is equal to a product of a transconductance gain of the second converting circuit and the voltage variation, and the fingerprint signal processor performs fingerprint sensing based on the sensing current. With the fingerprint sensing circuit and the fingerprint sensing apparatus, the detection accuracy can be improved.
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公开(公告)号：US10579857B2
公开(公告)日：2020-03-03
申请号：US15990260
申请日：2018-05-25
发明人： YingChuan Lu , Zhewei Tang , Jingkai Zhang , Wei Huang
IPC分类号： G06K9/00 , G06F1/3231 , G06F3/041 , G06F21/32 , G06F3/0488 , G06F1/3296 , H04W52/02
摘要： A terminal control method based on a fingerprint recognition key, a terminal control device based on a fingerprint recognition key, and a terminal are provided. The method includes: detecting a touch operation on the fingerprint recognition key, acquiring a touch parameter of the touch operation; and controlling a running state of a terminal, in a case where the touch parameter meets a preset condition. With the method, the terminal is controlled by the fingerprint recognition key to switch its running state, such as a turned-on state, a turned-off state, a sleep state, an awake state, a locked state, thereby simplify an operation and improving a user experience. In this case, the power key is cancelled since the function of the power key is implemented by the fingerprint recognition key, thereby reducing the physical components and thus the fabrication cost of the terminal.
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公开(公告)号：US10558300B2
公开(公告)日：2020-02-11
申请号：US16521439
申请日：2019-07-24
发明人： Ho-Nien Yang , Shen-Chia Huang
摘要： A driving method for an in-cell touch display and a mobile device using the same are provided. The driving method for an in-cell touch display comprises the steps of: dividing a frame period into N display/touch detection sub-periods each comprising a display sub-period and a touch detection sub-period; dividing scan lines into M scan-line sets, wherein a position of each of the scan-line sets corresponds to at least one of touch sensors; supplying a display common voltage to the touch sensor corresponding to the Ith scan-line set when the scan line being scanned in the display sub-period of the Kth display/touch detection sub-period comprises the scan line of the Ith scan-line set, wherein N, M, K and I are natural numbers, K is smaller than or equal to N, and I is smaller than or equal to M.
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公开(公告)号：US20200026378A1
公开(公告)日：2020-01-23
申请号：US16516146
申请日：2019-07-18
发明人： Yunn-Hwa WANG
摘要： A touch display control circuit, a control method, and an electronic device are provided. The touch display control circuit is configured to drive STN-LCD screens, TN-LCD screens and CSTN-LCD screens. The touch display control circuit includes a display driving circuit and a touch detection circuit. The display driving circuit includes a signal transmission line, multiple groups of signal selection circuits and a reference voltage generation circuit. The signal transmission line is configured to transmit a gate signal and a common signal. The signal selection circuit is configured to select a preset control voltage based on display control timing or touch control timing. The reference voltage generation circuit is configured to provide the preset control voltage. The touch detection circuit is connected to the signal selection circuit and is configured to perform touch detection based on the touch control timing.
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公开(公告)号：US10402012B2
公开(公告)日：2019-09-03
申请号：US15237037
申请日：2016-08-15
发明人： Ho-Nien Yang , Shen-Chia Huang
摘要： A driving method for an in-cell touch display and a mobile device using the same are provided. The driving method for an in-cell touch display comprises the steps of: dividing a frame period into N display/touch detection sub-periods each comprising a display sub-period and a touch detection sub-period; dividing scan lines into M scan-line sets, wherein a position of each of the scan-line sets corresponds to at least one of touch sensors; supplying a display common voltage to the touch sensor corresponding to the Ith scan-line set when the scan line being scanned in the display sub-period of the Kth display/touch detection sub-period comprises the scan line of the Ith scan-line set, wherein N, M, K and I are natural numbers, K is smaller than or equal to N, and I is smaller than or equal to M.
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9.发明申请公开(公告)号：US20180041211A1
公开(公告)日：2018-02-08
申请号：US15661619
申请日：2017-07-27
发明人： Yunn-Hwa WANG , Kuet Liong FAM
IPC分类号： H03K19/00 , G01R19/10 , H03K19/0948
CPC分类号： H03K19/0027 , G01R19/10 , G01R19/1659 , G06K9/00006 , G06K9/00053 , H03K19/0948
摘要： Sending, receiving and transmitting apparatuses of a dual-power system and a fingerprint recognition system are provided. The dual-power system includes a first power system for providing a first high voltage signal and a first low voltage signal and a second power system for providing a second high voltage signal and a second low voltage signal, and a voltage difference between the first high voltage signal and the first low voltage signal is equal to that between the second high voltage signal and the second low voltage signal. The sending apparatus includes a first detection circuit for outputting a detection signal indicating whether voltages of the first and second low voltage signals are equal; and a first transmission circuit for transmitting an output signal of the dual-power system or provide a first voltage to an output terminal of the sending apparatus, based on the detection signal.
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公开(公告)号：US20170255325A1
公开(公告)日：2017-09-07
申请号：US15448270
申请日：2017-03-02
发明人： Bei XIAO
CPC分类号： G06F3/0416 , G06F3/044 , G06F2203/04105
摘要： The application provides a touch apparatus, a drive circuit, a drive method and an electronic device. The drive method includes: in a pressure detection stage, providing a first pressure sensing signal to a part of detection electrode, and providing a second pressure sensing signal to the remaining detection electrodes. The first pressure sensing signal is not equal to the second pressure sensing signal. Through detecting a capacitance change between first pressure electrodes and second pressure electrodes, distance changes between a detection conductor and the first pressure electrodes and between the detection conductor and the second pressure electrodes are detected, to realize pressure sensing.
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