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公开(公告)号：US11347350B2
公开(公告)日：2022-05-31
申请号：US16923954
申请日：2020-07-08
Applicant: LG DISPLAY CO., LTD.
Inventor： HwiDeuk Lee , YangSik Lee , ChangSeok Oh
Abstract: Embodiments of the present disclosure relate to a touch display device, in which touch routing lines arranged in a non-active area do not overlap signal lines supplying a signal for driving a display, and in which the size of the area in which a connection electrode, which is positioned between the touch routing lines and the signal lines, overlaps the signal lines is reduced, thereby reducing direct and indirect noise due to the signal lines. In addition, the noise due to the signal lines can be dispersed through a shielding electrode by arranging the shielding electrode, to which a constant voltage is applied, in an opening in the connection electrode, thereby further reducing the noise of a touch sensing signal and improving touch sensing performance thereof.
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公开(公告)号：US20210026489A1
公开(公告)日：2021-01-28
申请号：US16923954
申请日：2020-07-08
Applicant: LG DISPLAY CO., LTD.
Inventor： HwiDeuk Lee , YangSik Lee , ChangSeok Oh
Abstract: Embodiments of the present disclosure relate to a touch display device, in which touch routing lines arranged in a non-active area do not overlap signal lines supplying a signal for driving a display, and in which the size of the area in which a connection electrode, which is positioned between the touch routing lines and the signal lines, overlaps the signal lines is reduced, thereby reducing direct and indirect noise due to the signal lines. In addition, the noise due to the signal lines can be dispersed through a shielding electrode by arranging the shielding electrode, to which a constant voltage is applied, in an opening in the connection electrode, thereby further reducing the noise of a touch sensing signal and improving touch sensing performance thereof.
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公开(公告)号：US11995257B2
公开(公告)日：2024-05-28
申请号：US18068880
申请日：2022-12-20
Applicant: LG Display Co., Ltd.
Inventor： JuHong Kim , HwiDeuk Lee
CPC classification number: G06F3/0412 , G06F3/044
Abstract: The present disclosure relates to a transparent touch display device including: a substrate including a pixel area, a first transmission area located on a first side of the pixel area, and a second transmission area located on a second side of the pixel area; a display cathode electrode to which a base voltage for display driving is applied; a first touch cathode electrode located on a first side of the display cathode electrode and including a same material as the display cathode electrode; a second touch cathode electrode located on a second side of the display cathode electrode and including the same material as the display cathode electrode; a first touch bridge that runs across the pixel area and electrically connects the first touch cathode electrode and the second touch cathode electrode; a first touch line intersecting the first touch bridge and electrically connected to at least one of the first touch cathode electrode and the second touch cathode electrode; and a first upper touch shield disposed over the first touch line and overlapped with at least a portion of the first touch line, wherein the first upper touch shield has an equipotential with the first touch line.
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公开(公告)号：US20240160318A1
公开(公告)日：2024-05-16
申请号：US18505415
申请日：2023-11-09
Applicant: LG Display Co., Ltd.
Inventor： HwiDeuk Lee , Beom-Jin Kim , HyeongWon Kang , JuHong Kim
IPC: G06F3/041 , G06F3/044 , G09G3/20 , G09G3/3258
CPC classification number: G06F3/04184 , G06F3/0412 , G06F3/0446 , G09G3/2074 , G09G3/3258 , G06F2203/04111 , G09G2300/0842 , G09G2310/08 , G09G2354/00
Abstract: Embodiments of the disclosure relate to a touch display device and a touch sensing method and may specifically include a first pixel area, a first touch sensor area positioned on one side of the first pixel area, a first subpixel disposed in the first pixel area and including a light emitting element and a scanning transistor, a first display driving line connected to the first subpixel, a first touch sensor disposed in the first touch sensor area, a first sensing line disposed adjacent to the first touch sensor, a first touch line electrically connected to the first touch sensor, and a first sensing transistor controlling an electrical connection between the first sensing line and the first touch sensor, thereby removing a ghost touch that may occur due to temperature influence.
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公开(公告)号：US11907469B2
公开(公告)日：2024-02-20
申请号：US17963869
申请日：2022-10-11
Applicant: LG Display Co., Ltd.
Inventor： Sungsu Han , HwiDeuk Lee , Yangsik Lee , JuHong Kim
IPC: G06F3/041 , G06F3/044 , H10K59/40 , H10K59/124
CPC classification number: G06F3/04164 , G06F3/0412 , G06F3/0443 , H10K59/124 , H10K59/40 , G06F2203/04111
Abstract: A display device can include a substrate in which a plurality of pixels each including an emissive area and a transmissive area is disposed. The display device can further include a touch electrode in the transmissive area, and a plurality of first touch connection lines extended in a first direction and electrically connecting the touch electrodes respectively disposed in the pixels adjacent to each other. Further, the display device can include a reference line on the substrate in the emissive area and extended in a second direction different from the first direction, and a plurality of touch lines extended in the second direction in the emissive area and disposed on a plurality of insulating layers covering the reference line. Furthermore, the display device can include a planarization layer covering the plurality of touch lines, and a plurality of light emitting diodes on the planarization layer in the emissive area.
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Patent Agency Ranking
公开(公告)号：US11726623B2
公开(公告)日：2023-08-15
申请号：US17538758
申请日：2021-11-30
Applicant: LG DISPLAY CO., LTD.
Inventor： Yangsik Lee , HwiDeuk Lee , TaeWoo Kim , YongChan Park
CPC classification number: G06F3/0446 , G06F3/0412 , G06F3/0443 , H10K59/40 , G06F2203/04102
Abstract: A touch display device can include an active area in which a plurality of subpixels each including a light emitting element are disposed, the active area including a plurality of first areas and at least one folding area between the plurality of first areas; an encapsulation layer disposed on the active area; a plurality of touch electrodes disposed on the encapsulation layer; and a touch insulation layer between the plurality of touch electrode and the encapsulation layer, in which the touch insulation layer has a pattern structure in an area where the plurality of touch electrodes are not disposed in the at least one folding area.
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公开(公告)号：US11194414B2
公开(公告)日：2021-12-07
申请号：US16922390
申请日：2020-07-07
Applicant: LG DISPLAY CO., LTD.
Inventor： HwiDeuk Lee , Yangsik Lee , YongChan Park , Sungsu Han
Abstract: Embodiments of the present disclosure relate to a touch display device, and more particularly, to a touch display device which can have a small bezel size even when touch routing lines connecting a touch sensor to a touch sensing circuit are disposed in a non-display area and which can improve touch sensitivity by preventing or minimizing the formation of parasitic capacitance that can be caused by the touch routing lines.
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公开(公告)号：US20210124448A1
公开(公告)日：2021-04-29
申请号：US16985013
申请日：2020-08-04
Applicant: LG Display Co., Ltd.
Inventor： HwiDeuk Lee , YongChan Park , Taeyun Kim , Yangsik Lee
Abstract: The present disclosure relates to a touch display device, and more specifically, relates to a touch display device having a bottom emission structure. According to the touch display device, by disposing a touch electrode and a touch planarization layer between a substrate and a thin film transistor, a touch sensing function can be implemented without affecting the disposing of components for display driving. Further, by disposing a shielding electrode to which a constant voltage or a signal equal to a touch driving signal is applied between the touch electrode and a light emitting element, a noise of a touch sensing signal caused by display driving can be reduced and the performance of touch sensing performed together with the display driving can be improved.
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公开(公告)号：US10795483B2
公开(公告)日：2020-10-06
申请号：US16505057
申请日：2019-07-08
Applicant: LG DISPLAY CO., LTD.
Inventor： KwangJo Hwang , HwiDeuk Lee , Yangsik Lee
Abstract: Discussed is a touch display device having a touch circuit that includes an operational amplifier having a first input terminal for inputting a reference voltage, a second input terminal connected to a sensing target touch electrode, and an output terminal for outputting an output voltage, and wherein a common voltage applied to a common electrode and a reference voltage inputted to the first input terminal of the operational amplifier are synchronized with each other.
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公开(公告)号：US20250165092A1
公开(公告)日：2025-05-22
申请号：US18936929
申请日：2024-11-04
Applicant: LG Display Co., Ltd.
Inventor： HwiDeuk Lee , ByungHyun Lee
IPC: G06F3/041
Abstract: A light emitting diode display device with a built-in touch sensor according to embodiments of the present disclosure may include a substrate, a driving transistor included in a subpixel, and including an active layer, a source electrode, a gate electrode and a drain electrode, a light emitting diode included in the subpixel, and including a first electrode and a second electrode, a driving voltage line including a reflective metal material, a first electrode connection pattern electrically connecting the driving voltage line and the first electrode, and including a transparent electrode material, a touch sensor electrode including the transparent electrode material, and a touch routing line electrically connected to the touch sensor electrode and disposed between the substrate and the touch sensor electrode.
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