公开(公告)号：US20250021189A1

公开(公告)日：2025-01-16

申请号：US18676278

申请日：2024-05-28

Applicant: LG Display Co., Ltd.

Inventor： Sangkyu Kim ,  DeukSu Lee ,  SungChul Kim ,  SeungRok Shin ,  Taeyun Kim

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display device and a touch driving method are presented herein. The touch display device includes a display panel having a plurality of touch electrodes, a drive circuit configured to drive the display panel, a touch circuit configured to detect a position of a stylus relative to the display panel using a downlink signal transmitted from the stylus, and a timing controller configured to control the drive circuit and the touch circuit. During a blank period while operating in a global uplink mode, the touch circuit supplies a global uplink signal to an entirety of the display panel. During a display-driving period while operating in a local uplink mode, the touch circuit supplies a plurality of local uplink signals having different phases to a plurality of regions of the display panel.

公开(公告)号：US11768559B2

公开(公告)日：2023-09-26

申请号：US17842250

申请日：2022-06-16

Applicant: LG Display Co., Ltd.

Inventor： SeungRok Shin ,  Sangkyu Kim ,  DeukSu Lee

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/0412 ,  G06F3/04164 ,  G06F3/0446

Abstract: A touch display device and a touch driving circuit are configured to drive at least one of the plurality of first touch electrode lines disposed in a first area with a first touch driving signal having a first touch driving frequency, and drive at least one of the plurality of second touch electrode lines disposed in a second area with a second touch driving signal having a second touch driving frequency that is different from the first touch driving frequency. Each of the first touch driving frequency and the second touch driving frequency is different from a display driving frequency related to display driving. to the touch display device reduces the influence of noise, increases the signal-to-noise ratio, and reduces the influence of driving the display, thereby improving the touch sensitivity.

公开(公告)号：US10963107B2

公开(公告)日：2021-03-30

申请号：US16591155

申请日：2019-10-02

Applicant: LG Display Co., Ltd.

Inventor： SangHyuck Bae ,  BuYeol Lee ,  SeungRok Shin ,  CheolSe Kim ,  DeukSu Lee ,  Hyunwoo Jang ,  Jaeseung Kim ,  YoungGyu Kim ,  Hyunsuk Cho

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/044

Abstract: Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.

公开(公告)号：US09430963B2

公开(公告)日：2016-08-30

申请号：US14788577

申请日：2015-06-30

Applicant: LG Display Co., Ltd.

Inventor： SeungRok Shin ,  DeukSu Lee

IPC: G06F3/041 ,  G09G3/20 ,  G06F3/044

CPC classification number: G09G3/2096 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G09G2300/043 ,  G09G2310/0208 ,  G09G2310/0213 ,  G09G2310/08 ,  G09G2330/02

Abstract: A display device integrated with a touch screen panel, and a method of driving the same, can prevent parasitic capacitance that would otherwise increase the load during a touch operation, lower the accuracy of touch sensing, or make touch sensing impossible. The display device includes data lines, gate lines, and a plurality of electrodes spaced apart from each other. A common voltage is applied to the electrodes in a display driving mode and a touch drive signal is applied to one or more of the electrodes in a touch driving mode. A data voltage is applied to the data lines in the display driving mode. A scan signal is supplied sequentially to the gate lines in the display driving mode and the touch drive signal or a signal corresponding to the touch drive signal is applied to one or more of the gate lines in the touch driving mode.

公开(公告)号：US20160188097A1

公开(公告)日：2016-06-30

申请号：US14979957

申请日：2015-12-28

Applicant: LG Display Co., Ltd.

Inventor： SeungRok Shin ,  Sangkyu Kim ,  Jeonghoon Lee ,  Jeonghoon Lee

IPC: G06F3/041 ,  G09G3/20 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/20 ,  G09G2310/08 ,  G09G2320/0261 ,  G09G2340/0435

Abstract: A disclosed touchscreen display device includes a display panel with data lines, gate lines, and N×M subpixels arranged in a matrix of N subpixel rows and M subpixel columns, and respectively connected to the corresponding data lines and the corresponding gate lines, where N and M are each a natural number greater than or equal to 2. The display device also includes touch electrodes. The display device is configured to provides a scanning signal to the gate lines connected to the N subpixel rows in a first sequence during an ith frame and in a second sequence different from the first sequence during an (i+1)th frame, where i is a positive integer. Each of the ith frame and the (i+1)th frame is configured to include at least one display driving mode section and at least one touch driving mode section.

Abstract translation: 所公开的触摸屏显示装置包括具有数据线，栅极线和N×M子像素的显示面板，N×M子像素排列成N个子像素行和M个子像素列的矩阵，并且分别连接到对应的数据线和相应的栅极线，其中N M分别为大于或等于2的自然数。显示装置还包括触摸电极。 显示装置被配置为在第（i + 1）帧期间在第i帧期间和在与第一序列不同的第二序列中以第一序列提供连接到N个子像素行的栅极线的扫描信号，其中i 是一个正整数。 第i帧和第（i + 1）帧中的每一帧被配置为包括至少一个显示驱动模式部分和至少一个触摸驱动模式部分。

公开(公告)号：US20150177880A1

公开(公告)日：2015-06-25

申请号：US14476277

申请日：2014-09-03

Applicant: LG DISPLAY CO., LTD.

Inventor： SeungRok Shin ,  DeukSu Lee

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G09G3/2096 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G09G2300/043 ,  G09G2310/0208 ,  G09G2310/0213 ,  G09G2310/08 ,  G09G2330/02

Abstract: A display device integrated with a touch screen panel, and a method of driving the same, can prevent parasitic capacitance that would otherwise increase the load during a touch operation, lower the accuracy of touch sensing, or make touch sensing impossible. The display device includes data lines, gate lines, and a plurality of electrodes spaced apart from each other. A common voltage is applied to the electrodes in a display driving mode and a touch drive signal is applied to one or more of the electrodes in a touch driving mode. A data voltage is applied to the data lines in the display driving mode. A scan signal is supplied sequentially to the gate lines in the display driving mode and the touch drive signal or a signal corresponding to the touch drive signal is applied to one or more of the gate lines in the touch driving mode.

Abstract translation: 与触摸屏面板集成的显示装置及其驱动方法可以防止在触摸操作期间增加负载的寄生电容，降低触摸感测的准确性或使得触摸感测不可能。 显示装置包括彼此间隔开的数据线，栅极线和多个电极。 在显示驱动模式中对电极施加公共电压，并且以触摸驱动模式将触摸驱动信号施加到一个或多个电极。 在显示驱动模式下将数据电压施加到数据线。 在显示驱动模式中向扫描线顺序地提供扫描信号，并且在触摸驱动模式中将触摸驱动信号或对应于触摸驱动信号的信号施加到一个或多个栅极线。

公开(公告)号：US11733804B2

公开(公告)日：2023-08-22

申请号：US17840041

申请日：2022-06-14

Applicant: LG Display Co., Ltd.

Inventor： SeungRok Shin ,  Sangkyu Kim ,  DeukSu Lee

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/0446 ,  G06F3/04166 ,  G06F2203/04107

Abstract: The disclosure is related to a touch display device, a shield electrode separated from a common electrode of a light-emitting element can be disposed on an area overlapping a touch electrode under an encapsulation layer, and a shield driving signal corresponding to a signal supplied to the touch electrode can be supplied to the shield electrode. Thus, the shield electrode prevents or at least reduces formation of a parasitic capacitance between an electrode or a signal line for a display driving and the touch electrode, and a touch detection performance can be improved by implementing a noise blocking function by the shield electrode.

公开(公告)号：US20230117610A1

公开(公告)日：2023-04-20

申请号：US17884287

申请日：2022-08-09

Applicant: LG Display Co., Ltd.

Inventor： SeungRok Shin ,  Jeonghoon Lee ,  DeukSu Lee ,  Yoonnara Jang

IPC: G06F3/041

Abstract: Embodiments of the present disclosure are related to a touch display device, in a structure that a touch electrode line is disposed to be divided on a plurality of sub-areas included in an active area, by synchronizing a driving of the touch electrode line adjacent to a boundary of the sub-area, or by performing a differential sensing processing by sharing a touch sensing signal detected from the touch electrode line, thus an accuracy of a touch sensing for an area adjacent to the boundary of the sub-area can be improved.

公开(公告)号：US20230004274A1

公开(公告)日：2023-01-05

申请号：US17842250

申请日：2022-06-16

Applicant: LG Display Co., Ltd.

Inventor： SeungRok Shin ,  Sangkyu Kim ,  DeukSu Lee

IPC: G06F3/041

Abstract: A touch display device and a touch driving circuit are configured to drive at least one of the plurality of first touch electrode lines disposed in a first area with a first touch driving signal having a first touch driving frequency, and drive at least one of the plurality of second touch electrode lines disposed in a second area with a second touch driving signal having a second touch driving frequency that is different from the first touch driving frequency. Each of the first touch driving frequency and the second touch driving frequency is different from a display driving frequency related to display driving. to the touch display device reduces the influence of noise, increases the signal-to-noise ratio, and reduces the influence of driving the display, thereby improving the touch sensitivity.

公开(公告)号：US11513641B2

公开(公告)日：2022-11-29

申请号：US17187146

申请日：2021-02-26

Applicant: LG Display Co., Ltd.

Inventor： SangHyuck Bae ,  BuYeol Lee ,  SeungRok Shin ,  CheolSe Kim ,  DeukSu Lee ,  Hyunwoo Jang ,  Jaeseung Kim ,  YoungGyu Kim ,  Hyunsuk Cho

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/0354 ,  G06F3/038

Abstract: Embodiments described herein is able to provide a touch display device, an active pen, a touch system, a touch circuit, and a pen recognition method capable of efficiently providing a display function, a touch-sensing function, and a pen-touch-sensing function.