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公开(公告)号：US20220221957A1
公开(公告)日：2022-07-14
申请号：US17712048
申请日：2022-04-01
Applicant: LG Display Co., Ltd.
Inventor： CheolSe KIM , JuHan KIM
Abstract: Embodiments of the present disclosure relate to a touch display device and, more particularly, to a touch display device including a touch panel that can reduce the number of signal lines and the number of touch channels and can prevent or reduce a ghost phenomenon in multi-touching. In particular, the touch display device includes a woven type touch panel in which touch electrodes are formed by disposing electrodes to be entangled and electrically connecting the entangled electrodes such that electrically disconnected points exist, thereby being able to reduce the number of signal lines and the number of touch channels and prevent or reduce a ghost phenomenon in multi-touching.
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公开(公告)号：US20210405757A1
公开(公告)日：2021-12-30
申请号：US17469455
申请日：2021-09-08
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：US20210223938A1
公开(公告)日：2021-07-22
申请号：US17224597
申请日：2021-04-07
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SungChul KIM , SunYeop KIM , Seongkyu KANG
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：US20200210025A1
公开(公告)日：2020-07-02
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：US20200097127A1
公开(公告)日：2020-03-26
申请号：US16561667
申请日：2019-09-05
Applicant: LG Display Co., Ltd.
Inventor： CheolSe KIM , JuHan KIM
Abstract: Embodiments of the present disclosure relate to a touch display device and, more particularly, to a touch display device including a touch panel that can reduce the number of signal lines and the number of touch channels and can prevent or reduce a ghost phenomenon in multi-touching. In particular, the touch display device includes a woven type touch panel in which touch electrodes are formed by disposing electrodes to be entangled and electrically connecting the entangled electrodes such that electrically disconnected points exist, thereby being able to reduce the number of signal lines and the number of touch channels and prevent or reduce a ghost phenomenon in multi-touching.
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Patent Agency Ranking
公开(公告)号：US20200004368A1
公开(公告)日：2020-01-02
申请号：US16455206
申请日：2019-06-27
Applicant: LG Display Co., Ltd.
Inventor： CheolSe KIM , JuHan KIM
IPC: G06F3/041
Abstract: A touch display panel and a touch display device. A shield electrode is disposed between a display electrode and touch electrodes, is driven using a signal corresponding to a signal applied to the touch electrodes. Display noise is blocked using the shield electrode, so that the sensitivity of touch sensing signals received from the touch electrodes are improved. In addition, due to the improved sensitivity of touch sensing signals, the performance of touch sensing based on a change in the self-capacitance of the touch electrodes is improved. Both a touch sensing function based on a change in the self-capacitance of the touch electrodes and a touch sensing function based on a change in the mutual capacitance of the touch electrodes are provided.
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公开(公告)号：US20190384437A1
公开(公告)日：2019-12-19
申请号：US16439544
申请日：2019-06-12
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SungChul KIM , SunYeop KIM , Seongkyu KANG , SeungMok SHIN , SungHoon LEE
Abstract: A touch display device and a method of driving the same. A transition value due to polarity inversion of a data voltage supplied to a predetermined number of adjacent subpixels is reduced by varying an inversion pattern by analysis of image data, so that fluctuations in the voltage of touch electrodes due to the transition of the data voltage are minimized. Accordingly, noise due to fluctuations in the voltage of the touch electrodes is removed so as to improve the performance of touch sensing performed in a period in which display driving is performed.
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公开(公告)号：US20190171320A1
公开(公告)日：2019-06-06
申请号：US16197285
申请日：2018-11-20
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SangHyuck BAE
IPC: G06F3/041 , G06F3/0354
Abstract: The present embodiments relate to a touch display device, a touch system, a driving circuit, and a driving method. The touch display device may include a display panel configured to have a plurality of data lines, a plurality of gate lines, and a plurality of common electrodes, which are arranged thereon, and a driving circuit configured to supply an uplink signal to at least a subset of the plurality of common electrodes disposed in at least a first region of the display panel during the display blank period to enable the pen to detect the uplink signal when the pen is in contact with or is adjacent to the display panel.
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公开(公告)号：US20190065000A1
公开(公告)日：2019-02-28
申请号：US16112320
申请日：2018-08-24
Applicant: LG Display Co., Ltd.
Inventor： CheolSe KIM , HoonBae KIM , SunYeop KIM
CPC classification number: G06F3/0418 , G06F3/016 , G06F3/0412 , G06F3/044 , G09G3/2092 , G09G3/3655 , G09G2310/0275 , G09G2310/08
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：US20180121002A1
公开(公告)日：2018-05-03
申请号：US15784466
申请日：2017-10-16
Applicant: LG Display Co., Ltd.
Inventor： JuHan KIM , CheolSe KIM
CPC classification number: G06F3/0414 , G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04111 , G09G3/3225 , G09G2310/08 , H01L27/323 , H01L51/5237 , H01L51/5253
Abstract: Disclosed is an electronic device having a force touch function, which has a thin thickness despite having the force touch function. The electronic device includes a substrate, first and second electrodes and a light emitting device layer including a light emitting layer provided on the substrate, and a touch electrode part on the second electrode. A distance between the second electrode and the touch electrode part is changeable according to a touch force applied to the touch electrode part.
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