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.

公开(公告)号：US11048360B2

公开(公告)日：2021-06-29

申请号：US16140903

申请日：2018-09-25

Applicant: LG DISPLAY CO., LTD.

Inventor： HyungUk Jang ,  SeungSeok Oh ,  SangHyuck Bae ,  Sungsu Han ,  Suyun Ju ,  DoYoung Jung

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

Abstract: Disclosed are a touch display device, a touch circuit, a pen, a touch system, and a multi-pen sensing method for receiving downlink signals output from two or more pens through one or more touch electrodes on a panel and distinguishably sensing the two or more pens based on unique information of the received downlink signals.

公开(公告)号：US10902793B2

公开(公告)日：2021-01-26

申请号：US16563653

申请日：2019-09-06

Applicant: LG DISPLAY CO., LTD.

Inventor： SeungSeok Oh ,  CheolSe Kim ,  YoungJoon Lee ,  SungYub Lee

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/3266

Abstract: A gate driver circuit, a display panel, and a display device. A number of emission start signals, with at least one a delay time, a pulse width, or a combination thereof, are supplied in a frame period in which display driving is performed at a low driving frequency. This decreases a degree by which luminance appearing in the frame period is reduced, or changes characteristics of frequency components of luminance, thereby preventing flicker from being observed. The display driving is performed at the low driving frequency reduces power consumption, and is performed at a lower driving frequency to improve the efficiency of the display device.

公开(公告)号：US11029790B2

公开(公告)日：2021-06-08

申请号：US16802236

申请日：2020-02-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  DoYoung Jung ,  SeungSeok Oh ,  Sungsu Han

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

Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

公开(公告)号：US10606389B2

公开(公告)日：2020-03-31

申请号：US15791665

申请日：2017-10-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  DoYoung Jung ,  SeungSeok Oh ,  Sungsu Han

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

Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

公开(公告)号：US11221701B2

公开(公告)日：2022-01-11

申请号：US16928948

申请日：2020-07-14

Applicant: LG Display Co., Ltd.

Inventor： SeungSeok Oh

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044

Abstract: The present disclosure relates to touch display device and touch driving methods, and more specifically, to a touch display device and a touch driving method for accurately performing touch sensing by applying touch driving signals orthogonal to one another to adjacent touch electrodes.

公开(公告)号：US11030962B2

公开(公告)日：2021-06-08

申请号：US16725022

申请日：2019-12-23

Applicant: LG Display Co., Ltd.

Inventor： SungYub Lee ,  YoungJoon Lee ,  SeungSeok Oh

IPC: G09G3/34 ,  G09G3/36

Abstract: A backlight unit and a display device are provided. The duty or the like of a light source driving signal is adjusted so that a frequency component causing flicker to be visible, among frequency components of luminance appearing in a driving period of low-speed driving mode. Flicker is prevented or reduced in the low-speed driving mode. The display device is driven in the low-speed driving mode to reduce power consumption. The display device is driven at a lower display driving frequency in the low-speed driving mode, thereby improving the efficiency thereof.