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    Touch sensor display device and interface method thereof
    14.
    发明授权
    Touch sensor display device and interface method thereof 有权

    公开(公告)号：US11194419B2

    公开(公告)日：2021-12-07

    申请号：US16704709

    申请日：2019-12-05

    Applicant: LG Display Co., Ltd.

    Inventor： JuneGun Chung ,  Youngwoo Jo

    IPC: G06F3/041 ,  G09G3/20

    Abstract: A touch sensor display device and an interface method thereof are provided. The touch sensor display device comprises a display panel in which a touch panel, gate lines, data lines, sensing lines, and subpixels are disposed; a gate driver circuit drives the gate lines; a data driver circuit drives the data lines; a touchscreen driver circuit drives the sensing lines, and includes a sleep module which controls switching to a sleep mode, and a wake-up module which performs a wake-up function to cancel and return to a normal state, and transmitting a sleep mode signal pattern or a wake-up signal pattern to the micro control unit; and a micro control unit determining whether a touch is detected, by the touchscreen driver circuit. Accordingly, power consumption is reduced in the display device. A mode change is performed by a driver circuit to enable rapid mode changes while reducing power consumption.

    Touch Display Device, Method for Driving the Same, Driving Circuit, Data-Driving Circuit, and Gate-Driving Circuit
    15.
    发明申请
    Touch Display Device, Method for Driving the Same, Driving Circuit, Data-Driving Circuit, and Gate-Driving Circuit 有权

    公开(公告)号：US20210318771A1

    公开(公告)日：2021-10-14

    申请号：US17354885

    申请日：2021-06-22

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G06F3/044 ,  G09G3/36

    Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.

    Touch display device, method for driving the same, driving circuit, data-driving circuit, and gate-driving circuit
    16.
    发明授权
    Touch display device, method for driving the same, driving circuit, data-driving circuit, and gate-driving circuit 有权

    公开(公告)号：US11068094B2

    公开(公告)日：2021-07-20

    申请号：US16657338

    申请日：2019-10-18

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/36

    Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.

    Touch display device, common driving circuit, and driving method
    17.
    发明授权
    Touch display device, common driving circuit, and driving method 有权

    公开(公告)号：US10955951B2

    公开(公告)日：2021-03-23

    申请号：US16719006

    申请日：2019-12-18

    Applicant: LG DISPLAY CO., LTD.

    Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36 ,  G06F3/047 ,  G02F1/1333 ,  G02F1/1362

    Abstract: A touch display device, a common driving circuit, and a driving method are discussed. The touch display device can include a common driving circuit configured to drive a plurality of common electrodes used for display driving and touch driving, wherein the common driving circuit can include a common signal stabilization amplifier configured to control the average of a first input signal and a second input signal, which are respectively received from a first common electrode and a second common electrode, to correspond to a reference common signal and to output a first control input signal and a second control input signal; and a differential amplifier configured to output a differential sensing signal that is proportional to the difference between the first control input signal and the second control input signal. Accordingly, the impact of display driving and touch driving on each other when simultaneously performing the display driving and the touch driving can be reduced.

    Touch display device, driving circuit, and driving method
    18.
    发明授权
    Touch display device, driving circuit, and driving method 有权

    公开(公告)号：US10802654B2

    公开(公告)日：2020-10-13

    申请号：US16163571

    申请日：2018-10-18

    Applicant: LG Display Co., Ltd.

    Inventor： Jaehun Jun ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333 ,  G06F3/045

    Abstract: A touch display device includes a display panel having a plurality of data lines, gate lines, and common electrodes, a data driving circuit supplying a data signal to the data lines, a common electrode driving circuit supplying a common signal to the common electrodes and outputting sensing data by detecting sensing signals from one or more of the common electrodes, and a touch controller sensing touch based on the sensing data, in which the common electrodes are arranged in two or more common electrode columns, the two or more common electrode columns each include two or more common electrodes, and while the data signal is supplied to the data lines, the two or more common electrode columns are supplied with a common signal respectively through local buffers. It is possible to perform touch sensing even while display driving by removing noise due to display driving.

    Touch sensing device
    19.
    发明授权
    Touch sensing device 有权
    触摸感应装置

    公开(公告)号：US09164637B2

    公开(公告)日：2015-10-20

    申请号：US14082631

    申请日：2013-11-18

    Applicant: LG Display Co., Ltd.

    Inventor： Youngwoo Jo

    IPC: G06F3/044 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416

    Abstract: A touch sensing device includes a display panel including a touch screen on which a plurality of touch sensors are formed, a touch sensing circuit including at least one sensing unit which receives self capacitance signals of a first touch sensor and a second touch sensor adjacent to the first touch sensor at differential input method and detects changes in capacitances of the first and second touch sensors, and a touch controller which analyzes touch raw data received from the touch sensing circuit and calculates coordinates of a touch input position. The sensing unit generates delays corresponding to a difference between the capacitances of the first and second touch sensors, accumulates the number of delays, converts an accumulated value of the delays into digital data, and generates the touch raw data.

    Abstract translation: 一种触摸感测装置包括：显示面板，包括其上形成有多个触摸传感器的触摸屏;触摸感测电路，包括：至少一个感测单元，其接收第一触摸传感器的自身电容信号;以及第二触摸传感器， 第一触摸传感器，并且检测第一和第二触摸传感器的电容的变化，以及触摸控制器，其分析从触摸感测电路接收的触摸原始数据并计算触摸输入位置的坐标。 感测单元产生对应于第一和第二触摸传感器的电容之间的差异的延迟，累积延迟数，将延迟的累积值转换为数字数据，并生成触摸原始数据。

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