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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：US20210200417A1
公开(公告)日：2021-07-01
申请号：US17123467
申请日：2020-12-16
Applicant: LG Display Co., Ltd.
Inventor： CheolSe KIM , JuHan KIM , SeungSeok OH , HoonBae KIM
IPC: G06F3/041
Abstract: In a touch display device with a touch sensor structure in which two or more touch electrodes located in two or more subareas are electrically connected to each other via one touch line, itis possible to decrease the number of touch channels. With a touch sensor structure in which two or more touch electrodes are connected to each touch line in a touch electrode connecting structure capable of removing ghost data, it is possible to improve touch sensitivity greatly.
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公开(公告)号：US20200004365A1
公开(公告)日：2020-01-02
申请号：US16448834
申请日：2019-06-21
Applicant: LG Display Co., Ltd.
Inventor： SeungMok SHIN , CheolSe KIM , JuHan KIM , HoonBae KIM , HyunHo PARK , Jinseong KIM , YongChan PARK
Abstract: A touch display panel and device. A common electrode is provided between a display driving signal line and a touch line. The common electrode functions as a shielding pattern that prevents display noise of a touch sensing signal without increasing the number of masks used to form the touch display device. A touch load reducing layer is disposed in a region between the touch line and the common electrode, except for a region in which the common electrode and pixel electrodes overlap. This reduces the load of the touch line and improves touch sensing performance without having an adverse effect on display driving.
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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：US20210247869A1
公开(公告)日：2021-08-12
申请号：US17245652
申请日：2021-04-30
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , CheolSe KIM , SeungMok SHIN , JuHan KIM , YongChan PARK , HyunHo PARK
Abstract: Embodiments disclosed herein relate to a touch display panel and a touch display device. By arranging a shielding structure, which is connected to a touch electrode in a region where a touch line and a data line overlap each other or is applied with a shielding signal corresponding to a touch driving signal from an outside circuit, between the touch line and the data line, it is possible to prevent direct capacitance from being formed between the touch line and the data line, and to prevent the capacitance formed due to the data line from causing noise on a touch sensing signal. In addition, by arranging a touch load reduction layer between the shielding structure and the touch line, it is also possible to reduce the capacitance between the touch line and the data line arranged in the horizontal direction, thereby improving touch sensing performance.
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Patent Agency Ranking
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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公开(公告)号：US20240211078A1
公开(公告)日：2024-06-27
申请号：US18517381
申请日：2023-11-22
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM
CPC classification number: G06F3/044 , G06F3/04184
Abstract: A touch display device including a touch power signal generation circuit includes a display panel having a driving voltage line and a base voltage line for driving a light emitting element, a plurality of touch electrodes, and a subpixel, a touch circuit applying a touch driving signal to the plurality of touch electrodes and detecting touch sensing according to a change in capacitance, a touch power signal generation circuit applying a touch power signal having the same phase and amplitude as the touch driving signal to the driving voltage line and the base voltage line during a touch driving period, and a timing controller controlling the touch circuit and the touch power signal generation circuit.
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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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公开(公告)号：US20200073530A1
公开(公告)日：2020-03-05
申请号：US16460697
申请日：2019-07-02
Applicant: LG Display Co., Ltd.
Inventor： HoonBae KIM , SunYeop KIM , SungHoon LEE , SeungMok SHIN , SungChul KIM , Youngwoo JO , Seongkyu KANG , HongJu LEE
IPC: G06F3/041 , G06F3/0354 , G06F3/044 , G06F3/038
Abstract: A touch display device accurately distinguishes a touch input performed using a finger and a touch input performed using a pen, such as a stylus, significantly reduce a touch sensing time, simultaneously perform a display operation and a touch sensing operation, and operate in a power saving manner. Touch sensing does not restrict an image display time of a display panel. Touch inputs are sensed without degradation in touch performance, which would otherwise be caused by parasitic capacitance occurring in electrodes within the display panel, such as data lines or gate lines.
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