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公开(公告)号：US10001852B2
公开(公告)日：2018-06-19
申请号：US13893497
申请日：2013-05-14
Applicant: LG Display Co., Ltd.
Inventor： HoonBae Kim
CPC classification number: G06F3/0412 , G06F3/044 , G09G3/3655 , G09G3/3677 , G09G2300/0426 , G09G2320/0219 , G09G2330/06
Abstract: Disclosed is an LCD device and a method of driving the same. The LCD device includes a liquid crystal panel configured to comprise a TFT substrate and a color filter substrate; a touch panel configured to comprise a plurality of electrode units parallel to the gate lines to detect a touch, each of the electrode units comprising a plurality of driving electrodes and a plurality of receiving electrodes; a common voltage generator configured to generate a common voltage; a touch sensing unit configured to supply the common voltage to the electrode units and sequentially supply a driving voltage to driving electrodes formed in scanned electrode units, corresponding to scanned gate lines which have received a scan signal for one frame period, to detect a touch; and a driving voltage generator configured to generate the driving voltage.
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12.发明授权公开(公告)号：US09865219B2
公开(公告)日：2018-01-09
申请号：US13887507
申请日：2013-05-06
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , HoonBae Kim
IPC: G06F3/041 , G09G3/36 , G06F3/044 , G02F1/1343
CPC classification number: G09G3/3696 , G02F1/13338 , G02F1/134309 , G06F3/0412 , G06F3/0416 , G06F3/044
Abstract: Disclosed is an LCD device and a method of driving the same. The LCD device includes a liquid crystal panel configured to comprise a TFT substrate and a color filter substrate; a touch panel configured to comprise a plurality of driving electrodes and a plurality of receiving electrodes; a common voltage generator configured to generate a common voltage; a touch sensing unit configured to supply the common voltage to the driving electrodes and sequentially supply a driving voltage to scanned driving electrodes, corresponding to scanned gate lines to which a scan signal has been inputted for one frame period, to detect a touch; and a driving voltage generator configured to generate the driving voltage.
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公开(公告)号：US20130307820A1
公开(公告)日：2013-11-21
申请号：US13893497
申请日：2013-05-14
Applicant: LG Display Co., Ltd.
Inventor： HoonBae Kim
CPC classification number: G06F3/0412 , G06F3/044 , G09G3/3655 , G09G3/3677 , G09G2300/0426 , G09G2320/0219 , G09G2330/06
Abstract: Disclosed is an LCD device and a method of driving the same. The LCD device includes a liquid crystal panel configured to comprise a TFT substrate and a color filter substrate; a touch panel configured to comprise a plurality of electrode units parallel to the gate lines to detect a touch, each of the electrode units comprising a plurality of driving electrodes and a plurality of receiving electrodes; a common voltage generator configured to generate a common voltage; a touch sensing unit configured to supply the common voltage to the electrode units and sequentially supply a driving voltage to driving electrodes formed in scanned electrode units, corresponding to scanned gate lines which have received a scan signal for one frame period, to detect a touch; and a driving voltage generator configured to generate the driving voltage.
Abstract translation: 公开了一种LCD装置及其驱动方法。 LCD装置包括：液晶面板，被配置为包括TFT基板和滤色器基板; 触摸面板被配置为包括与栅极线平行的多个电极单元以检测触摸，每个电极单元包括多个驱动电极和多个接收电极; 配置为产生公共电压的公共电压发生器; 触摸感测单元，被配置为向电极单元提供公共电压，并且对与已经接收到一帧周期的扫描信号的扫描的栅极线相对应地扫描的电极单元中形成的驱动电极依次提供驱动电压以检测触摸; 以及被配置为产生驱动电压的驱动电压发生器。
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公开(公告)号：US20230229259A1
公开(公告)日：2023-07-20
申请号：US17972467
申请日：2022-10-24
Applicant: LG Display Co., Ltd.
Inventor： SunYeop Kim , SungChul Kim , HoonBae Kim , Seongkyu Kang
CPC classification number: G06F3/0418 , G06F3/0446 , G06F3/04164
Abstract: Embodiments of the disclosure relate to a touch display device, a touch driving circuit, and a touch driving method. Specifically, a touch display device comprises a display panel including a plurality of touch electrodes, a gate driving circuit configured to supply a plurality of scan signals to the display panel through a plurality of gate lines, a touch driving circuit configured to detect touch according to a change in capacitance of the plurality of touch electrodes, and a power management circuit configured to supply a different level of compensation voltages to the plurality of touch electrodes in each of an overlap distortion period in a display driving period, a transition distortion period of the display driving period, and a touch driving period.
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公开(公告)号：US11644725B2
公开(公告)日：2023-05-09
申请号：US17520143
申请日：2021-11-05
Applicant: LG DISPLAY CO., LTD.
Inventor： SeongKyu Kang , SungChul Kim , HoonBae Kim , SunYeop Kim
IPC: G09G3/34 , G02F1/1362 , G09G3/36
CPC classification number: G02F1/136286 , G09G3/3688 , G02F2201/121 , G02F2201/123
Abstract: A display device includes a plurality of gate lines; a plurality of data lines; a plurality of pixel electrodes electrically connected with the plurality of data lines; a plurality of common electrodes corresponding to two or more pixel electrodes among the plurality of pixel electrodes; a data driving circuit outputting data voltages to the plurality of data lines; and a driving circuit outputting a first driving signal with a first voltage level to at least one common electrode among the plurality of common electrodes during a first driving period and a second driving signal with a second voltage level and a third voltage level to the at least one common electrode during a second driving period, the second driving signal being a pulse signal, wherein the second voltage level and the third voltage level differ from the first voltage level.
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Patent Agency Ranking
公开(公告)号：US20220197474A1
公开(公告)日：2022-06-23
申请号：US17507631
申请日：2021-10-21
Applicant: LG Display Co., Ltd.
Inventor： Seongkyu Kang , SungChul Kim , HoonBae Kim , SunYeop Kim
Abstract: Embodiments of the present disclosure relate to a touch display device, a touch driving circuit and a touch driving method thereof, and more particularly, a touch display device, a touch driving circuit and a touch driving method thereof enabling to reduce the distortion phenomenon of the common voltage caused by a load of the touch electrodes. In addition, embodiments of the present disclosure relate to a touch display device, a touch driving circuit and touch driving method thereof enabling reduction of the distortion phenomenon of the common voltage according to a structure of the touch electrodes. In addition, embodiments of the present disclosure relate to a touch display device, a touch driving circuit and touch driving method thereof enabling to reduce the distortion phenomenon of the common voltage generated in a driving process in which a display driving operation and a touch driving operation are alternated.
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公开(公告)号：US11144148B2
公开(公告)日：2021-10-12
申请号：US16881877
申请日：2020-05-22
Applicant: LG Display Co., Ltd.
Inventor： HoonBae Kim , SungChul Kim , SunYeop Kim , Seongkyu Kang
Abstract: Provided are a touchscreen display device, a touch driving circuit, and a pen touch sensing method. Sensing processing on a pen signal is performed in a different manner, depending on whether or not a gate line, through which a gate signal having a variable voltage is applied, overlaps with a common electrode selected as a sensing target. Even in the case in which an abnormal noise voltage is induced in the common electrode by panel interior noise while pen touch sensing is being performed during display driving, pen touch sensitivity is prevented from being reduced.
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公开(公告)号：US11144143B2
公开(公告)日：2021-10-12
申请号：US16566604
申请日：2019-09-10
Applicant: LG DISPLAY CO., LTD.
Inventor： SungChul Kim , HoonBae Kim , SunYeop Kim , Seongkyu Kang
Abstract: A touch display panel and a touch display device are discussed. A data voltage, supplied to subpixels corresponding to a touch electrode, has a polarity pattern configured to minimize the cumulative transition value of the data voltage. Noise in touch sensing signals, caused by the transition of the data voltage, can be prevented, and touch sensing performance can be improved. A data voltage having polarities opposite to those of a previous frame is supplied in every specific frames, or some subpixels of a frame are set to have opposite polarities. Deteriorations in subpixels, caused by inversion driving for improving touch sensing performance, can be prevented.
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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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