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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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2.发明授权公开(公告)号：US09773148B2
公开(公告)日：2017-09-26
申请号：US14586063
申请日：2014-12-30
发明人： Lianghua Mo , Junqiao Liu , Haijun Hu , Jie Liu
CPC分类号： G06K9/0002 , G06F3/0412 , G06F3/0416 , G06F3/044
摘要： A display device is provided. The display device includes: a display panel provided with a plurality of display electrodes, where the display electrodes are configured for displaying images, display electrodes located within a predetermined region of the display panel are defined as first electrodes, the first electrodes are configured for fingerprint sensing, and a stage during which the first electrodes perform the fingerprint sensing is defined as a fingerprint sensing stage; and a driving circuit configured to, provide display signals to the display electrodes to display the images, and provide a fingerprint sensing signal to the first electrodes during the fingerprint sensing stage and perform a self-capacitance detection on the first electrodes, to implement the fingerprint sensing. A driving circuit, a method for driving the display device, a liquid crystal display device and an electronic apparatus including the display device are provided.
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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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4.发明授权Touch-control method for liquid display device and touch-controllable liquid crystal display device 有权液晶显示装置和触摸可控液晶显示装置的触摸控制方法公开(公告)号：US09235301B2
公开(公告)日：2016-01-12
申请号：US13936037
申请日：2013-07-05
发明人： Lianghua Mo , Xinxi Jiang , Hua Li , Peng Wang
IPC分类号： G06F3/044 , G06F3/041 , G06F3/00 , G06F3/0354
CPC分类号： G06F3/044 , G06F3/00 , G06F3/03545 , G06F3/0412 , G06F3/0416 , G09G3/00 , G09G3/3648 , G09G2354/00
摘要： A touch-control method for a liquid crystal display device, includes: switching from a display mode to a touch-control mode; determining whether there is a touch made by an object or whether there is an input made by an active pen; in the case where there is the input made by the active pen, starting an active pen detecting sub-mode in which an X-axis direction common electrode of the liquid crystal display device is defined as an X-axis direction receiving electrode, and a Y-axis direction common electrode or a signal electrode is defined as a Y-axis direction receiving electrode; and determining a position or an action of the active pen according to amplitudes of signals of the X-axis direction receiving electrode and the Y-axis direction receiving electrode. A touch-controllable liquid crystal display device is further provided.
摘要翻译： 一种液晶显示装置的触摸控制方法，包括：从显示模式切换到触摸控制模式; 确定是否存在由对象做出的触摸或者是否存在由活动笔进行的输入; 在存在由活动笔进行的输入的情况下，开始将液晶显示装置的X轴方向公共电极定义为X轴方向接收电极的活动笔检测子模式， Y轴方向公共电极或信号电极被定义为Y轴方向接收电极; 以及根据X轴方向接收电极和Y轴方向接收电极的信号的幅度来确定活动笔的位置或动作。 还提供了一种触摸可控液晶显示装置。
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公开(公告)号：US09189117B2
公开(公告)日：2015-11-17
申请号：US14107538
申请日：2013-12-16
发明人： Lianghua Mo , Guang Ouyang
IPC分类号： G06F3/045 , G06F3/044 , G09G3/36 , G06F3/0488
CPC分类号： G06F3/044 , G06F3/0412 , G06F3/0416 , G06F3/0418 , G06F3/0488 , G06F2203/04103 , G06F2203/04104 , G09G3/3648
摘要： A touch control display device is provided according to embodiments of the disclosure. The touch control display device includes: a first substrate, a second substrate, a liquid crystal layer disposed between the first substrate and the second substrate, a common electrode and a plurality of pixel units; and a plurality of touch sensing electrodes disposed above the common electrode, where the plurality of touch sensing electrodes are arranged in a two-dimensional array. With the solution according to the embodiments of the disclosure, the noise can be reduced and the frame rate of touch detection scan can be enhanced.
摘要翻译： 根据本公开的实施例提供了触摸控制显示装置。 触摸控制显示装置包括：第一基板，第二基板，设置在第一基板和第二基板之间的液晶层，公共电极和多个像素单元; 以及设置在所述公共电极上方的多个触摸感测电极，其中所述多个触摸感测电极以二维阵列排列。 利用根据本公开的实施例的解决方案，可以降低噪声并且可以提高触摸检测扫描的帧速率。
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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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