公开(公告)号：US11847974B2

公开(公告)日：2023-12-19

申请号：US17963444

申请日：2022-10-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyungjin Jang ,  HyeonSik Kim ,  UnSang Yu ,  Kwangdug Choi ,  JinBong Chung ,  Sunkyung Shin ,  Sojung Jung ,  Beom-Jin Kim ,  Bongchoon Kwak

IPC: G09G3/30 ,  G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0297 ,  G09G2340/0435 ,  G09G2354/00

Abstract: A display panel sets a focus area per frame, based on focus area setting information and focus area reference line information received from the outside, control the number of gate lines simultaneously driven according to the focus area, and display a rendered image per focus area, thereby preventing the quality degradation of the image perceived by the user and increasing the frame rate of the display panel, and enhancing the quality of the virtual reality experience provided by the virtual reality device.

公开(公告)号：US20230168773A1

公开(公告)日：2023-06-01

申请号：US17966370

申请日：2022-10-14

Applicant: LG Display Co., Ltd.

Inventor： Sojung Jung ,  Youngwoo Jo

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G09G3/20

Abstract: Embodiments of the present disclosure relate to a touch controller, a touch sensing system, and a touch display device. Among data communication periods between the touch controller and a touch driving circuit, during the data communication period included in a period in which a system clock signal is not output, a level of a communication control signal is changed a plurality of times, thereby allowing the touch driving circuit to recognize an address start time point. Therefore, it is possible to reduce power consumption of the touch sensing system by reducing a period in which the system clock signal is output and to improve the efficiency of data communication of the touch sensing system by enabling normal data communication in a period in which the system clock signal is not output.

公开(公告)号：US11650691B1

公开(公告)日：2023-05-16

申请号：US17977752

申请日：2022-10-31

Applicant: LG Display Co., Ltd.

Inventor： Sojung Jung ,  Youngwoo Jo

IPC: G06F3/041 ,  G06F3/044

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

Abstract: A touch driving circuit and a touch display device are disclosed. A plurality of channel switches for driving touch electrodes disposed in areas disposed symmetrically to each other may be simultaneously turned on to perform touch sensing in a state in which a plurality of touch lines electrically connected to the plurality of channel switches are short-circuited to each other. Accordingly, touch sensing may be performed using touch data in which a load deviation due to the touch lines according to areas in which the touch electrodes are disposed is reduced, thereby improving the performance of the touch sensing.

公开(公告)号：US11550438B2

公开(公告)日：2023-01-10

申请号：US17368339

申请日：2021-07-06

Applicant: LG Display Co., Ltd.

Inventor： Hyunwoo Kim ,  Jaehun Jun ,  Sojung Jung

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/046 ,  G06F3/0354

Abstract: The present disclosure relates to a touch display device, a method of driving the touch display device, a touch driving circuit, and a touch controller, for sensing a touch using a touch driving signal whose frequency is changed in sync with a touch driving timing. According to the embodiments of the present disclosure, it is possible to have a high signal-to-noise ratio as well as improved immunity to the EMI, and acquire improved touch sensitivity.

公开(公告)号：US09600093B2

公开(公告)日：2017-03-21

申请号：US14498254

申请日：2014-09-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Dongjo Park ,  Sojung Jung

IPC: G06F3/0354 ,  G06F3/041 ,  G06F3/044 ,  G06F3/046

CPC classification number: G06F3/03545 ,  G06F3/041 ,  G06F3/044 ,  G06F3/046

Abstract: A touch sensing system includes a pen including a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit which transmits a resonant inductive signal to the pen through electric coupling and to receive a resonance signal from the pen through the antenna.

公开(公告)号：US09594440B2

公开(公告)日：2017-03-14

申请号：US14496921

申请日：2014-09-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Dongjo Park ,  Sojung Jung

IPC: G06F3/046 ,  G06F3/0354 ,  G06F3/044 ,  G06F3/041

CPC classification number: G06F3/03545 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G06F3/046

Abstract: A touch sensing system includes a pen including at least one resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit which supplies a resonant inductive signal to the XY electrodes, decides a location of the pen based on a resonance magnitude of a resonance signal received through the antenna, and decides a pen pressure of the pen based on a resonant frequency of the resonant circuit and an adjacent frequency of the resonant frequency measured while varying a frequency of the resonant inductive signal.

Abstract translation: 触摸感测系统包括笔，该笔包括嵌入其中的至少一个谐振电路，包括X电极和垂直于X电极的Y电极的XY电极，围绕XY电极的天线以及向谐振电感信号提供谐振电感信号的第一触摸驱动电路 XY电极基于通过天线接收的谐振信号的谐振幅度来决定笔的位置，并且基于谐振电路的谐振频率和测量的谐振频率的相邻频率来决定笔的笔压力 同时改变谐振感应信号的频率。

公开(公告)号：US20150123940A1

公开(公告)日：2015-05-07

申请号：US14528569

申请日：2014-10-30

Applicant: LG DISPLAY CO., LTD.

Inventor： Dongjo PARK ,  Sojung Jung

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F2203/04106

Abstract: A touch sensing system and a method for driving the same. The touch sensing system includes a pen with a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes substantially perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit. The first touch driving circuit supplies a resonant inductive signal to the XY electrodes, analyzes a resonance signal received through the antenna, and decides a location and a pen pressure of the pen. The resonant inductive signal includes N periods each having a different duration, and wherein N is a positive integer equal to or greater than 2.

Abstract translation: 触摸感测系统及其驱动方法。 触摸感测系统包括嵌入其中的谐振电路的笔，包括X电极和基本上垂直于X电极的Y电极的XY电极，围绕XY电极的天线和第一触摸驱动电路。 第一触摸驱动电路向XY电极提供谐振感应信号，分析通过天线接收的谐振信号，并且决定笔的位置和笔的压力。 谐振感应信号包括每个具有不同持续时间的N个周期，并且其中N是等于或大于2的正整数。