公开(公告)号：US10423262B2

公开(公告)日：2019-09-24

申请号：US15946725

申请日：2018-04-05

Applicant: LG Display Co., Ltd.

Inventor： Seong Kyu Kang ,  Hoon Bae Kim ,  Sung Yub Lee

IPC: G06F3/041

Abstract: In a touch display device, a controller generates a touch sync signal for controlling timing of a touch sensing period and a display period in each of a plurality of frames. A touch panel has a plurality of touch electrodes in a display area to generate touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A touch sensing circuit supplies a touch drive signal to the plurality of touch electrodes during the touch sensing period and detects if the touch occurred based on the touch sensing signals received from the plurality of touch electrodes. A touch assistance line surrounds the display area and is disposed in the non-display area of the touch panel. A touch assistance signal supply circuit generates a touch assistance signal on the touch assistance line. The touch assistance signal mimics the touch drive signal during the touch sensing period.

公开(公告)号：US09990075B2

公开(公告)日：2018-06-05

申请号：US14537534

申请日：2014-11-10

Applicant: LG DISPLAY CO., LTD.

Inventor： Seong Kyu Kang ,  Hoon Bae Kim ,  Sung Su Han

IPC: G09G5/18 ,  G06F3/041 ,  G06F3/044 ,  G09G3/20 ,  G09G3/36

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/20 ,  G09G3/3648 ,  G09G2310/08

Abstract: Disclosed are a display device and method of driving the same in which a display panel may include a plurality of gate lines, a plurality of data lines and a touch panel, the touch panel including a first touch electrode group where s number of horizontal electrodes and k (which is less than s) number of longitudinal electrodes cross each other; and a touch sensing unit that during a first period of a plurality of touch sensing periods included in a one frame period, determines whether at least one of the s number of horizontal electrodes is touched based on a plurality of sensing signals received from at least two of the s number of horizontal electrodes, and during a second period of the plurality of touch sensing periods, determines whether at least one of the s number of horizontal electrodes, which is either the same or different from the at least one of the s number of horizontal electrodes determined during the first period, is touched based on one or more sensing signals received from at least one of the k number of longitudinal electrodes.

公开(公告)号：US09886129B2

公开(公告)日：2018-02-06

申请号：US14698368

申请日：2015-04-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Sung Chul Kim ,  Hoon Bae Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: Discussed are a display device and a method of driving the same. The display device can include a panel where a plurality of touch groups including a plurality of self-capacitance electrodes are arranged along with a plurality of gate lines, a touch sensing unit configured to analyze a plurality of touch sensing signals sequentially received from the plurality of touch groups to determine a touch event on the panel, during a plurality of touch sensing periods included in one frame period, a data driver configured to respectively supply data voltages to a plurality of data lines which are provided in the panel in a direction perpendicular to the plurality of touch groups, a gate driver configured to sequentially supply a scan pulse to the plurality of gate lines, and a timing controller configured to supply image data to the data driver.

公开(公告)号：US09477111B2

公开(公告)日：2016-10-25

申请号：US13859399

申请日：2013-04-09

Applicant: LG DISPLAY CO., LTD.

Inventor： Hoon Bae Kim ,  Cheol Se Kim ,  Sungsu Han

IPC: G06F3/045 ,  G09G3/20 ,  G02F1/1333 ,  G06F3/041 ,  G06F3/044 ,  G09G3/36

CPC classification number: G02F1/13338 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G09G3/36 ,  G09G3/3677 ,  G09G2354/00

Abstract: Discussed is a display device. The display device includes a display panel including a plurality of gate lines and a plurality of data lines, a timing controller temporally dividing one frame period and driving the display panel such that a display mode for displaying an image in the display panel and a touch mode for sensing the user touch are alternately driven, a gate driver, and a data driver. Some of the gate lines and some of the data lines overlap each of a plurality of touch electrodes that are units for sensing a user touch. The gate driver simultaneously turns on a plurality of switching elements respectively connected to the gate lines overlapping each touch electrode in the touch mode. The data driver outputting display data having the same level to the respective data lines overlapping each touch electrode when the switching elements are turned on.

Abstract translation: 讨论的是显示设备。 显示装置包括：显示面板，包括多条栅极线和多条数据线;定时控制器，其在时间上分割一帧周期并驱动显示面板，使得用于在显示面板中显示图像的显示模式和触摸模式 用于感测用户触摸被交替驱动，门驱动器和数据驱动器。 一些栅极线和一些数据线与作为感测用户触摸的单元的多个触摸电极中的每一个重叠。 栅极驱动器在触摸模式下同时接通分别连接到与每个触摸电极重叠的栅极线的多个开关元件。 数据驱动器在开关元件导通时，将与各接触电极重叠的各数据线具有相同电平的显示数据。

公开(公告)号：US20130335342A1

公开(公告)日：2013-12-19

申请号：US13675149

申请日：2012-11-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Hoon Bae Kim ,  Ju Han Kim

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G02F1/13 ,  G06F3/0412 ,  G06F3/0416 ,  G09G3/3655

Abstract: A display device with integrated touch screen is provided. The display device may include a panel and a touch IC. The panel may include a plurality of driving electrodes and sensing electrodes. The touch IC may compensate for a feedback common voltage outputted from the panel by generating a compensation common voltage based on the feedback common voltage and applying the compensation common voltage to the driving electrodes and the sensing electrodes when the panel operates in a display driving mode.

Abstract translation: 提供具有集成触摸屏的显示设备。 显示装置可以包括面板和触摸IC。 面板可以包括多个驱动电极和感测电极。 触摸IC可以通过基于反馈公共电压产生补偿公共电压来补偿从面板输出的反馈公共电压，并且当面板以显示驱动模式操作时，将补偿公共电压施加到驱动电极和感测电极。