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公开(公告)号：US20220326778A1
公开(公告)日：2022-10-13
申请号：US17850312
申请日：2022-06-27
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：US20250156008A1
公开(公告)日：2025-05-15
申请号：US18920689
申请日：2024-10-18
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , NamYong GONG , SungChul KIM , SunYeop KIM , SungYub LEE , Jongsung KIM
Abstract: A touch display device and a touch driving circuit are discussed. An operation period of the touch display device can include a first touch sensing mode period in which a first touch driving signal having a first amplitude is applied to the touch sensor, and a second touch sensing mode period in which a second touch driving signal having a second amplitude different from the first amplitude is applied to the touch sensor. The first touch driving signal can be sequentially applied to each of a plurality of first touch electrodes during the first touch sensing mode period, and, during the second touch sensing mode period.
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公开(公告)号：US20220057685A1
公开(公告)日：2022-02-24
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: G02F1/1362 , G09G3/36
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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公开(公告)号：US20210232256A1
公开(公告)日：2021-07-29
申请号：US17230838
申请日：2021-04-14
Applicant: LG Display Co., Ltd.
Inventor： SungChul KIM , HoonBae KIM , SunYeop KIM , Seongkyu KANG
Abstract: A touch display device, a driving circuit, and a driving method are provided. An image defect which occurs when display driving and touch driving are simultaneously executed can be reduced by performing control such that a voltage level of a touch electrode driving signal (TDS) varies in a section other than a high-level period (Pon) of an ON-clock signal (ON_CLK) and/or a high-level period (Poff) of an OFF-clock signal (OFF_CLK).
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公开(公告)号：US20190079631A1
公开(公告)日：2019-03-14
申请号：US16123873
申请日：2018-09-06
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SunYeop KIM
Abstract: Embodiments of the present disclosure relate to a touch display device, a touch circuit, and a touch sensing method. More particularly, by performing differential sensing on touch electrodes, noise components which the touch electrodes receive from display electrodes (e.g., data line, gate line, etc.) may be removed to accurately sense a touch, so that display driving and touch sensing may be normally performed simultaneously. In this manner, the display driving and the touch sensing may be normally performed simultaneously, thereby enabling implementation of a high-resolution display.
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Patent Agency Ranking
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：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：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：US20200210018A1
公开(公告)日：2020-07-02
申请号：US16710829
申请日：2019-12-11
Applicant: LG Display Co., Ltd.
Inventor： SungChul KIM , HoonBae KIM , SunYeop KIM , Seongkyu KANG
Abstract: A touch display device, a driving circuit, and a driving method are provided. An image defect which occurs when display driving and touch driving are simultaneously executed can be reduced by performing control such that a voltage level of a touch electrode driving signal (TDS) varies in a section other than a high-level period (Pon) of an ON-clock signal (ON_CLK) and/or a high-level period (Poff) of an OFF-clock signal (OFF_CLK).
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