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公开(公告)号：US12079433B2
公开(公告)日：2024-09-03
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 , G06F3/0416 , G06F3/0448 , H10K59/40 , G06F2203/04111 , G09G3/32 , G09G2300/0408 , G09G2300/0426 , G09G2300/0842
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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公开(公告)号：US11315986B2
公开(公告)日：2022-04-26
申请号：US16726609
申请日：2019-12-24
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , JuHan Kim
Abstract: A touch display device comprises a substrate; planarization film disposed over the substrate; an anode electrode and a touch metal disposed on the planarization film; a bank disposed over the planarization film on which the anode electrode and the touch metal are disposed, and the bank including a first cavity exposing the anode electrode and a second cavity exposing the touch metal; an organic light emitting layer disposed in the first cavity and disposed over the anode electrode; and a cathode electrode disposed over the organic light emitting layer and the bank, wherein the cathode electrode includes a first cathode electrode and a second cathode electrode, which are separated from each other, and a part of the first cathode electrode is disposed in the second cavity and connected to the touch metal in the second cavity.
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公开(公告)号：US11281333B2
公开(公告)日：2022-03-22
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：US11257452B2
公开(公告)日：2022-02-22
申请号：US16440187
申请日：2019-06-13
Applicant: LG Display Co., Ltd.
Inventor： SungChul Kim , CheolSe Kim , HoonBae Kim , SunYeop Kim , Seongkyu Kang
IPC: G09G3/36 , G02F1/1333 , G06F3/041
Abstract: The present disclosure relates to a touch display device, a touch sensing circuit, and a driving method. Further, the present disclosure relates to a touch display device, a touch sensing circuit, and a driving method, in which multiple touch electrodes are grouped into multiple touch electrode groups, and sensing is concurrently performed for each of the multiple touch electrode groups, so that excellent touch sensitivity and a fast touch sensing speed are allowed.
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公开(公告)号：US11023059B2
公开(公告)日：2021-06-01
申请号：US16124998
申请日：2018-09-07
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：US10719155B2
公开(公告)日：2020-07-21
申请号：US16113598
申请日：2018-08-27
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , BuYeol Lee , JuHan Kim
IPC: G06F3/041 , G06F3/044 , G09G3/20 , G09G3/3266 , G09G3/36
Abstract: The present disclosure provides a touch display panel or a touch display device and a gate driving circuit included in the touch display panel or the touch display device. The gate driving circuit includes a shift register group outputting scan signals during a display driving period and a dummy shift register group outputting dummy signal during a touch driving period. The gate driving circuit transmits a signal output immediately before a display driving period before a touch driving period ends, through dummy shift registers during the touch driving period such that the signal is used for outputting a first scan signal in the next display driving period. Accordingly, it is possible to prevent output reduction of a scan signal at the boundary between the touch driving period and the display driving period and prevent defect in an image due to the output reduction.
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7.发明申请公开(公告)号：US20180173923A1
公开(公告)日：2018-06-21
申请号：US15841101
申请日：2017-12-13
Applicant: LG Display Co., Ltd.
Inventor： SungYub Lee , CheolSe Kim , HongChul Kim
IPC: G06K9/00 , G02F1/1333 , G02F1/1345 , G06F3/041 , G09G3/3266
CPC classification number: G06K9/0002 , G02F1/13338 , G02F1/13452 , G06F3/0412 , G06F3/0416 , G06F3/042 , G06F3/044 , G06K9/0004 , G09G3/3266 , G09G2300/0426 , G09G2300/0814 , G09G2310/08 , G09G2354/00
Abstract: The present disclosure relates to a display device, a display panel, a fingerprint-sensing method, and a circuit for sensing a fingerprint. More particularly, the display device, the display panel, the fingerprint-sensing method, and the circuit for sensing a fingerprint may receive a signal from a data line electrically connected to a pixel electrode through a switching transistor and may detect fingerprint information after a driving voltage is applied to the pixel electrode disposed in a pixel area, thereby detecting a fingerprint without including a separate fingerprint sensor outside a display panel.
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公开(公告)号：US20160188041A1
公开(公告)日：2016-06-30
申请号：US14942370
申请日：2015-11-16
Applicant: LG Display Co., Ltd.
Inventor： SungChul Kim , CheolSe Kim
IPC: G06F3/044
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.
Abstract translation: 公开了一种触摸屏装置及其驱动方法，其使接触电极的寄生电容的影响最小化，并感测充电到触摸电极的电容的电压。 触摸屏装置包括触摸电极，连接到触摸电极的触摸驱动线，触摸驱动电压输出单元，通过第一开关连接到触摸驱动线以输出触摸驱动电压;连接到触摸驱动的电流源 线路通过第二开关，以根据预定的放电电流来充电到触摸电极的寄生电容的电荷;以及触摸电压感测单元，其通过第三开关连接到触摸驱动线，以感测充电到每个手指电容 和触摸电极的寄生电容。
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公开(公告)号：US20130293498A1
公开(公告)日：2013-11-07
申请号：US13887507
申请日：2013-05-06
Applicant: LG DISPLAY CO., LTD.
Inventor： CheolSe Kim , HoonBae Kim
IPC: G09G3/36
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.
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，被配置为向驱动电极提供公共电压，并且对与扫描信号已经输入了一帧周期的扫描的栅极线对应的扫描驱动电极顺序地提供驱动电压，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：US20220206619A1
公开(公告)日：2022-06-30
申请号：US17561270
申请日：2021-12-23
Applicant: LG Display Co., Ltd.
Inventor： CheolSe Kim , JuHan Kim , Jinseong Kim , Haewon Lee
Abstract: A display device includes a first substrate, pixel substrates, first connection lines, second connection lines, and a touch electrode. The pixel substrates are disposed on the first substrate, and are spaced apart from each other along a first direction and along a second direction perpendicular to the first direction. The first connection lines connect pixel substrates disposed along the first direction. The second connection lines connect pixel substrates disposed along the second direction. The touch electrode is disposed between the pixel substrates in an area adjacent to areas in which the first connection lines and the second connection lines are disposed.
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