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公开(公告)号：US11347361B2
公开(公告)日：2022-05-31
申请号：US16720629
申请日：2019-12-19
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , JuHan Kim
Abstract: The present disclosure relates to a touch display device, a touch panel, a touch sensing circuit and a touch sensing method. In the touch display device, the touch panel, and the touch sensing circuit, and in the method of performing touch sensing therein, a structure in which a plurality of touch sensor groups is arranged is provided, and one of a self-capacitance touch sensing scheme and a mutual-capacitance touch sensing scheme is adaptively implemented according to the type and position of a touch event. Therefore, the number of signal lines and the number of touch channels may be reduced, and the ghost phenomenon can be reduced or be overcome when multiple touches occur.
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公开(公告)号：US11144126B2
公开(公告)日：2021-10-12
申请号：US16875291
申请日：2020-05-15
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , HoonBae Kim , SunYeop Kim
Abstract: Embodiments of the present disclosure relate to a touch display device, a driving method, and a driving circuit. More particularly, embodiments of the present disclosure relate to a touch display device, a driving method, and a driving circuit capable of preventing touch sensitivity from being affected by display driving even though simultaneously performing the display driving and touch driving by supplying a data voltage to a plurality of data lines disposed in a display panel, supplying a common voltage to a plurality of common electrodes disposed in the display panel, displaying an image through the display panel, and supplying a common voltage to the common electrodes.
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公开(公告)号：US10996791B2
公开(公告)日：2021-05-04
申请号：US16439366
申请日：2019-06-12
Applicant: LG Display Co., Ltd.
Inventor： HoonBae Kim , CheolSe Kim , SungChul Kim , SunYeop Kim , Seongkyu Kang
IPC: G06F3/041 , G09G3/20 , G06F3/044 , G09G3/3266 , G09G3/3275 , G09G3/36
Abstract: A touch display device, a data driving circuit, and a driving method are provided. The touch display device, the data driving circuit, and the driving method convert an image digital signal into an image analog signal in response to a gamma reference voltage which is applied to the touch electrodes arranged in the display panel and which is modulated in synchronization with a first touch electrode driving signal swinging with a first amplitude and output a data signal corresponding to the converted image analog signal to the data lines. Accordingly, it is possible to effectively simultaneously perform display and touch sensing.
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公开(公告)号：US10691248B2
公开(公告)日：2020-06-23
申请号：US15258915
申请日：2016-09-07
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , BuYeol Lee , YongChan Park , Suyun Ju
Abstract: The present embodiments relate to a touch technology and, more particularly, to a touch display device, which includes multiple first electrodes embedded in a display panel, at least one second electrode positioned outside the display panel, and a touch force sensing gap existing between the multiple first electrodes and the at least one second electrode, a method for driving the same, and a driving circuit for driving the multiple first electrodes and the at least one second electrode. The present embodiments, as described above, make it possible to sense not only a touch position, but also a touch force, with which the user presses the screen during a touch.
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公开(公告)号：US10481716B2
公开(公告)日：2019-11-19
申请号：US15812304
申请日：2017-11-14
Applicant: LG DISPLAY CO., LTD.
Inventor： CheolSe Kim , Jinseong Kim , JiYeon Park
Abstract: The present embodiments relate to an all-in-one switch device as well as a touch display apparatus and a display panel including such an all-in-one switch device. The all-in-one switch device includes a switching transistor electrically connected between a pixel electrode and a data line, and a sensor pattern connected between a first electrode and a second electrode of the switching transistor. One device is enough to provide both a switching function for display driving and a sensor function for sensing a touch position and/or a fingerprint, a separate touch sensor having a large size is unnecessary, and it is possible to precisely sense a touch position and/or a fingerprint without being affected by parasitic capacitance, even in a situation where a system has a structure or a circuit in which touch sensing based on capacitance is impossible.
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Patent Agency Ranking
16.发明授权公开(公告)号：US10474286B2
公开(公告)日：2019-11-12
申请号：US15792409
申请日：2017-10-24
Applicant: LG Display Co., Ltd.
Inventor： SangHyuck Bae , BuYeol Lee , SeungRok Shin , CheolSe Kim , DeukSu Lee , Hyunwoo Jang , Jaeseung Kim , YoungGyu Kim , Hyunsuk Cho
IPC: G06F3/041 , G06F3/0354 , G06F3/038 , G06F3/044
Abstract: Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.
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公开(公告)号：US10013123B2
公开(公告)日：2018-07-03
申请号：US14942370
申请日：2015-11-16
Applicant: LG Display Co., Ltd.
Inventor： SungChul Kim , CheolSe Kim
CPC classification number: G06F3/044 , G06F3/0412
Abstract: Disclosed are a touch screen device and a method of driving the same, which minimize an influence of parasitic capacitance of a touch electrode and sense a voltage charged into capacitance(s) of the touch electrode. The touch screen device includes a touch electrode, a touch driving line connected to the touch electrode, a touch driving voltage output unit connected to the touch driving line through a first switch to output a touch driving voltage, a current source connected to the touch driving line through a second switch to discharge electrical charges charged into parasitic capacitance of the touch electrode according to a predetermined discharge current, and a touch voltage sensing unit connected to the touch driving line through a third switch to sense a voltage charged into each of finger capacitance and the parasitic capacitance of the touch electrode.
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18.发明申请LIQUID CRYSTAL DISPLAY DEVICE USING IN-CELL TOUCH MODE AND METHOD FOR MANUFACTURING THE SAME 有权使用细胞触摸模式的液晶显示装置及其制造方法公开(公告)号：US20160187696A1
公开(公告)日：2016-06-30
申请号：US14980174
申请日：2015-12-28
Applicant: LG Display Co., Ltd.
Inventor： JinSeong Kim , CheolSe Kim , JuHan Kim , SungChul Kim , SangHyuck Bae
IPC: G02F1/1333 , G06F3/044 , G02F1/1362 , G06F3/041 , G02F1/1335 , G02F1/1368
CPC classification number: G02F1/13338 , G02F1/136286 , G06F3/0412 , G06F3/044 , G06F2203/04103
Abstract: A liquid crystal display (LCD) device includes a lower substrate and an upper substrate disposed to face each other and having a liquid crystal layer interposed therebetween, black matrices provided on the lower substrate, a color filter provided between the black matrices, and a common electrode provided on the entire surface of the lower substrate, a gate line and a data line provided on the upper substrate and intersect with each other to define a pixel area, a thin film transistor (TFT) present in the pixel area of the upper substrate, and a pixel electrode electrically in contact with the TFT, wherein a sensing signal is output by detecting a change in self-capacitance between a touch object contacting the upper substrate and the gate line and the data line.
Abstract translation: 液晶显示器（LCD）装置包括：下基板和上基板，其设置成彼此面对并具有介于其间的液晶层，设置在下基板上的黑矩阵，设置在黑矩阵之间的滤色器和公共 设置在下基板的整个表面上的电极，栅极线和数据线，设置在上基板上并彼此相交以限定像素区域，存在于上基板的像素区域中的薄膜晶体管（TFT） 以及与TFT电接触的像素电极，其中通过检测与上基板接触的触摸物体与栅极线与数据线之间的自电容的变化来输出感测信号。
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19.发明授权公开(公告)号：US09285933B2
公开(公告)日：2016-03-15
申请号：US13686919
申请日：2012-11-28
Applicant: LG Display Co., Ltd.
Inventor： HongChul Kim , CheolSe Kim , InHyuk Song
CPC classification number: G06F3/044 , G06F3/0418 , G09G3/20 , G09G2354/00 , G09G2360/16
Abstract: Provided are a display device with integrated touch screen and a method of driving the same that reduce a touch error due to the switch of an image and thus enhance touch sensing performance. The display device includes a display panel, a driver IC, and a touch IC. The driver IC respectively supplies a plurality of data voltages, corresponding to frame-unit image data, to a plurality of pixels formed in the display panel, and calculates average luminance of a plurality of touch blocks. Each of the touch blocks includes a certain number of pixels. The touch IC supplies a touch driving signal to each of the touch blocks, compensates for a capacitive change in the pixels due to switch of an image, and senses a touch.
Abstract translation: 提供了具有集成触摸屏的显示装置及其驱动方法，其减少由于图像的切换引起的触摸错误，从而增强了触摸感测性能。 显示装置包括显示面板，驱动器IC和触摸IC。 驱动器IC分别将对应于帧单位图像数据的多个数据电压提供给形成在显示面板中的多个像素，并且计算多个触摸块的平均亮度。 每个触摸块包括一定数量的像素。 触摸IC为每个触摸块提供触摸驱动信号，补偿由于图像的切换引起的像素中的电容变化，并且感测触摸。
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公开(公告)号：US20240045551A1
公开(公告)日：2024-02-08
申请号：US18214615
申请日：2023-06-27
Applicant: LG DISPLAY CO., LTD.
Inventor： CheolSe Kim
CPC classification number: G06F3/0443 , G06F3/0412 , G06F3/0448 , G06F3/0416 , H10K59/40 , G06F2203/04111 , G09G2300/0842 , G09G2300/0408 , G09G2300/0426 , G09G3/32
Abstract: A display panel including a substrate; a driving transistor on the substrate; a first passivation layer covering the driving transistor; a touch line formed on the first passivation layer; a second passivation layer covering the touch line; an anode electrode formed on the second passivation layer and electrically connected to the driving transistor through a contact hole in the first passivation layer and the second passivation layer; a touch electrode formed on the second passivation layer at a position spaced apart from the anode electrode and electrically connected to the touch line through a touch contact hole of the second passivation layer; a bank covering the anode electrode and the touch electrode and having an opening corresponding to an emission area; and a light emitting layer and a cathode electrode sequentially formed on the anode electrode in the emission area.
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