公开(公告)号：US20160224186A1

公开(公告)日：2016-08-04

申请号：US15093672

申请日：2016-04-07

Applicant: LG Display Co., Ltd.

Inventor： Junghan LEE ,  Sungchul KIM

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F2203/04101 ,  G09G3/36 ,  G09G3/3674 ,  G09G3/3677 ,  G09G3/3685 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/0272 ,  G09G2310/0278

Abstract: A display device with an integrated touch screen including a display panel including electrodes divided into a plurality of block type groups and a plurality of data lines; a display driver IC configured to apply a common voltage to the electrodes when a driving mode of the panel is a display driving mode, sequentially apply a touch scan signal to each block type group when the driving mode of the panel is a touch driving mode, and apply a data signal to the data lines associated with a corresponding block type group when the touch scan signal is applied to the corresponding block type group; and a touch IC configured to generate the touch scan signal and apply the touch scan signal to the display driver IC.

公开(公告)号：US20210117021A1

公开(公告)日：2021-04-22

申请号：US17134401

申请日：2020-12-26

Applicant: LG Display Co., Ltd.

Inventor： Junghan LEE ,  Sungchul KIM

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

Abstract: A display device with an integrated touch screen including a display panel including electrodes divided into a plurality of block type groups and a plurality of data lines; a display driver IC configured to apply a common voltage to the electrodes when a driving mode of the panel is a display driving mode, sequentially apply a touch scan signal to each block type group when the driving mode of the panel is a touch driving mode, and apply a data signal to the data lines associated with a corresponding block type group when the touch scan signal is applied to the corresponding block type group; and a touch IC configured to generate the touch scan signal and apply the touch scan signal to the display driver IC.

公开(公告)号：US20170351369A1

公开(公告)日：2017-12-07

申请号：US15684890

申请日：2017-08-23

Applicant: LG Display Co., Ltd.

Inventor： Sungchul KIM ,  Junghan LEE

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04111

Abstract: A touch sensing device includes a touch screen coupled with a display panel including data lines, gate lines crossing the data lines, and pixels arranged in a matrix form, and a touch sensing circuit which supplies a driving signal to lines of the touch screen and senses a touch input. The touch sensing circuit detects an optimum sensing time, in which changes in a voltage change of the gate lines are maintained within a previously determined allowable range, in a touch screen drive period in which data is not written to the pixels of the display panel. The touch sensing circuit supplies the driving signal to the lines of the touch screen only in the optimum sensing time of the touch screen drive period.

公开(公告)号：US20170192591A1

公开(公告)日：2017-07-06

申请号：US15381410

申请日：2016-12-16

Applicant: LG Display Co., Ltd.

Inventor： Hyunguk JANG ,  Cheolse KIM ,  Sungchul KIM ,  Sanghyuck BAE ,  Sungsu HAN ,  Suyun JU ,  Doyoung JUNG

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

Abstract: A touch sensing system is disclosed. The touch sensing system includes an active stylus pen that generates a first pen driving signal for detecting a touch input in synchronization with a touch driving signal input from a touch screen and a second pen driving signal for detecting an additional input related to an additional function of the active stylus pen in a touch driving period and outputs the first and second pen driving signals to the touch screen; and a touch driving device that applies the touch driving signal to the touch screen, senses the first pen driving signal in a first period of the touch driving period, and senses the second pen driving signal in a second period of the touch driving period.

公开(公告)号：US20170123547A1

公开(公告)日：2017-05-04

申请号：US15400940

申请日：2017-01-06

Applicant: LG Display Co., Ltd.

Inventor： Sungchul KIM ,  Junghan LEE

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04111

Abstract: A touch sensing device includes a touch screen coupled with a display panel including data lines, gate lines crossing the data lines, and pixels arranged in a matrix form, and a touch sensing circuit which supplies a driving signal to lines of the touch screen and senses a touch input. The touch sensing circuit detects an optimum sensing time, in which changes in a voltage change of the gate lines are maintained within a previously determined allowable range, in a touch screen drive period in which data is not written to the pixels of the display panel. The touch sensing circuit supplies the driving signal to the lines of the touch screen only in the optimum sensing time of the touch screen drive period.

公开(公告)号：US20160259457A1

公开(公告)日：2016-09-08

申请号：US15158440

申请日：2016-05-18

Applicant: LG Display Co., Ltd.

Inventor： Junghan LEE ,  Sungchul KIM

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

Abstract: A display device with an integrated touch screen including a display panel including electrodes divided into a plurality of block type groups and a plurality of data lines; a display driver IC configured to apply a common voltage to the electrodes when a driving mode of the panel is a display driving mode, sequentially apply a touch scan signal to each block type group when the driving mode of the panel is a touch driving mode, and apply a data signal to the data lines associated with a corresponding block type group when the touch scan signal is applied to the corresponding block type group; and a touch IC configured to generate the touch scan signal and apply the touch scan signal to the display driver IC.

公开(公告)号：US20170192534A1

公开(公告)日：2017-07-06

申请号：US15384766

申请日：2016-12-20

Applicant: LG Display Co., Ltd.

Inventor： Sungsu HAN ,  Hyunguk JANG ,  Sungchul KIM ,  Sanghyuck BAE ,  Suyun JU ,  Doyoung JUNG

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

CPC classification number: G06F3/0383 ,  G06F3/03545 ,  G06F3/0416 ,  G06F3/044

Abstract: An active stylus pen according to the present invention includes a first signal processor configured to generate a touch frame recognition signal for discriminating touch frames on the basis of sub-pulses corresponding to part of each touchscreen driving signal received from a touchscreen and a second signal processor configured to generate a pen driving signal synchronized with main pulses of each touchscreen driving signal other than the sub-pulses and to vary the pen driving signal in units of a touch frame according to the touch frame recognition signal such that additional pen information is reflected in the pen driving signal.

公开(公告)号：US20170031465A1

公开(公告)日：2017-02-02

申请号：US15215769

申请日：2016-07-21

Applicant: LG Display Co., Ltd.

Inventor： Doyoung JUNG ,  Hyunguk JANG ,  Sungchul KIM ,  Sanghyuck BAE ,  Sungsu HAN ,  Suyun JU

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

CPC classification number: G06F3/0383 ,  G06F3/03545 ,  G06F3/044 ,  G06F2203/04108

Abstract: A touch sensing system comprises a touchscreen with a plurality of touch electrodes, to which a touchscreen driving signal is applied, and a stylus pen that generates a pen driving signal based on the touchscreen driving signal and sends the same to the touchscreen. The stylus pen comprises: an amplifier that amplifies the touchscreen driving signal to generate an amplified signal; a comparator that compares the amplified signal with a preset reference voltage to generate a comparator output signal; and a signal processor that measures the pulse width of the comparator output signal, adjusts an amount of delay based on a measurement, and determines an output timing of the pen driving signal based on an adjusted amount of delay to synchronize the pen driving signal with the touchscreen driving signal.

Abstract translation: 触摸感测系统包括具有多个触摸电极的触摸屏，其上施加有触摸屏驱动信号，以及触控笔，其基于触摸屏驱动信号产生笔驱动信号并将其发送到触摸屏。 触控笔包括：放大器，其放大触摸屏驱动信号以产生放大信号; 比较器，其将放大的信号与预置的参考电压进行比较，以产生比较器输出信号; 以及测量比较器输出信号的脉冲宽度的信号处理器，基于测量来调整延迟量，并且基于调整的延迟量来确定笔驱动信号的输出定时，以将笔驱动信号与 触摸屏驱动信号。

公开(公告)号：US20160085377A1

公开(公告)日：2016-03-24

申请号：US14953887

申请日：2015-11-30

Applicant: LG Display Co., Ltd.

Inventor： Sungchul KIM

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  G09G3/3677 ,  G09G2310/0286 ,  G09G2354/00

Abstract: A display device includes a display panel including data lines, gate lines crossing the data lines, and pixels arranged in a matrix form, a touch screen which is embedded in the display panel or is installed on the display panel, a data driving circuit supplying a data voltage to the data lines, a gate driving circuit supplying a gate pulse to the gate lines, and a touch sensing circuit which supplies a driving signal to lines of the touch screen and senses a touch input. The gate driving circuit alternately drives pull-down transistors connected in parallel to one gate line. The gate driving circuit drives one of the pull-down transistors or simultaneously drives the pull-down transistors during a drive period of the touch screen.

公开(公告)号：US20130342478A1

公开(公告)日：2013-12-26

申请号：US13687738

申请日：2012-11-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Sanghyuck BAE ,  Sungchul KIM

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G09G3/36 ,  G09G2320/0223

Abstract: A touch sensing apparatus according to an embodiment of the present invention includes: a display device including a plurality of pixels and displaying an image; a touch screen including a plurality of touch sensors and being included in the display device; display panel driving circuits for driving the display device; a touch sensing circuit for applying a driving signal to the touch sensors to sense a voltage or capacitance variation in the touch sensors; a controller for time-dividing a first frame period into a first driving period for displaying an image on the display device and a second driving period for sensing the touch sensors; and a reset control circuit for controlling operations of the display panel driving circuits with a reset enable signal to initialize the pixels of the display device to an equivalent reset voltage at predetermined intervals between the first driving period and the second driving period.

Abstract translation: 根据本发明的实施例的触摸感测装置包括：显示装置，包括多个像素并显示图像; 包括多个触摸传感器并包括在所述显示装置中的触摸屏; 用于驱动显示装置的显示面板驱动电路; 触摸感测电路，用于向触摸传感器施加驱动信号以感测触摸传感器中的电压或电容变化; 控制器，用于将第一帧周期时分为用于在显示装置上显示图像的第一驱动周期和用于感测所述触摸传感器的第二驱动周期; 以及复位控制电路，用于通过复位使能信号控制显示面板驱动电路的操作，以在第一驱动周期和第二驱动周期之间以预定间隔将显示装置的像素初始化为等效复位电压。