公开(公告)号：US20220147185A1

公开(公告)日：2022-05-12

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：US10802654B2

公开(公告)日：2020-10-13

申请号：US16163571

申请日：2018-10-18

Applicant: LG Display Co., Ltd.

Inventor： Jaehun Jun ,  HyeongWon Kang ,  Youngwoo Jo

IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333 ,  G06F3/045

Abstract: A touch display device includes a display panel having a plurality of data lines, gate lines, and common electrodes, a data driving circuit supplying a data signal to the data lines, a common electrode driving circuit supplying a common signal to the common electrodes and outputting sensing data by detecting sensing signals from one or more of the common electrodes, and a touch controller sensing touch based on the sensing data, in which the common electrodes are arranged in two or more common electrode columns, the two or more common electrode columns each include two or more common electrodes, and while the data signal is supplied to the data lines, the two or more common electrode columns are supplied with a common signal respectively through local buffers. It is possible to perform touch sensing even while display driving by removing noise due to display driving.

公开(公告)号：US20130249825A1

公开(公告)日：2013-09-26

申请号：US13728636

申请日：2012-12-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyeongwon Kang ,  Jaehun Jun

IPC: G06F3/0354

CPC classification number: G06F3/03547 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044

Abstract: A touch sensing device includes a touch screen including Tx lines, Rx lines crossing the Tx lines, and touch sensors formed at crossings of the Tx lines and the Rx lines, a Tx driving circuit for supplying a driving signal to each of the Tx lines N times, where N is a positive integer equal to or greater than 2, and an Rx driving circuit for double sampling signals received through the Rx lines in one period of the driving signal. The Rx driving circuit includes a multiplexer which receives first and second signals and switches on or off a signal transmission path of the first and second signals, and an integrator which samples and integrates the first and second signals received from the multiplexer.

Abstract translation: 触摸感测装置包括触摸屏，包括Tx线，与Tx线交叉的Rx线和在Tx线和Rx线的交叉处形成的触摸传感器，用于向每个Tx线N提供驱动信号的Tx驱动电路 时间，其中N是等于或大于2的正整数;以及Rx驱动电路，用于在驱动信号的一个周期中通过Rx线接收的双采样信号。 Rx驱动电路包括多路复用器，其接收第一和第二信号并且接通或关闭第一和第二信号的信号传输路径，以及积分器，其对从多路复用器接收的第一和第二信号进行采样和积分。

公开(公告)号：US11567597B2

公开(公告)日：2023-01-31

申请号：US17472059

申请日：2021-09-10

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3275

Abstract: A display device can include a display panel having a plurality of data lines, a plurality of gate lines and a plurality of subpixels are arrayed; a data driver configured to supply a video data signal including a first signal segment and a second signal segment maintaining a predetermined voltage difference to each of the plurality of data lines, and output readout data in response to signal sensing through each of the plurality of data lines to which the video data signal is supplied; and a touch controller configured to detect a touch based on the readout data, wherein each of the plurality of subpixels includes: an emitting device; a driving transistor; a first transistor; and a storage capacitor connected between a first node and a second node, and including a first plate and a second plate.

公开(公告)号：US11435848B2

公开(公告)日：2022-09-06

申请号：US17410969

申请日：2021-08-24

Applicant: LG Display Co., Ltd.

Inventor： Hyunkyu Park ,  Jaehun Jun ,  JuneYoun Hwang

IPC: G06F3/041 ,  G06F3/044

Abstract: Embodiments of the present disclosure relate to touch display devices, touch driving circuits, touch controllers, and sensing data transmission methods, provide effects of reducing the amount of sensing data transmitted as a touch driving circuit transmits encoded sensing data to a touch controller.

公开(公告)号：US20220158132A1

公开(公告)日：2022-05-19

申请号：US17470450

申请日：2021-09-09

Applicant: LG Display Co., Ltd.

Inventor： Bongchoon Kwak ,  UnSang Yu ,  Jaehun Jun

IPC: H01L51/52 ,  H01L27/32

Abstract: An electroluminescent display device comprises first to third subpixels each of which including a contact area and a light emission area, each subpixel provided with a first electrode, the first electrode extending from the light emission area to the contact area of each of the first to third subpixels; a first reflective layer provided in the light emission area of the first subpixel and electrically insulated from the first electrode of the first subpixel; a second reflective layer provided at least in the light emission area of the second subpixel; and a third reflective layer provided at least in the light emission area of the third subpixel.

公开(公告)号：US09134824B2

公开(公告)日：2015-09-15

申请号：US13728636

申请日：2012-12-27

Applicant: LG Display Co., Ltd.

Inventor： Hyeongwon Kang ,  Jaehun Jun

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

CPC classification number: G06F3/03547 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044

Abstract: A touch sensing device includes a touch screen including Tx lines, Rx lines crossing the Tx lines, and touch sensors formed at crossings of the Tx lines and the Rx lines, a Tx driving circuit for supplying a driving signal to each of the Tx lines N times, where N is a positive integer equal to or greater than 2, and an Rx driving circuit for double sampling signals received through the Rx lines in one period of the driving signal. The Rx driving circuit includes a multiplexer which receives first and second signals and switches on or off a signal transmission path of the first and second signals, and an integrator which samples and integrates the first and second signals received from the multiplexer.

Abstract translation: 触摸感测装置包括触摸屏，包括Tx线，与Tx线交叉的Rx线和在Tx线和Rx线的交叉处形成的触摸传感器，用于向每个Tx线N提供驱动信号的Tx驱动电路 时间，其中N是等于或大于2的正整数;以及Rx驱动电路，用于在驱动信号的一个周期中通过Rx线接收的双采样信号。 Rx驱动电路包括多路复用器，其接收第一和第二信号并且接通或关闭第一和第二信号的信号传输路径，以及积分器，其对从多路复用器接收的第一和第二信号进行采样和积分。

公开(公告)号：US11836311B2

公开(公告)日：2023-12-05

申请号：US18088394

申请日：2022-12-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3275

CPC classification number: G06F3/0412 ,  G06F3/0445 ,  G06F3/04166 ,  G09G3/3275 ,  G06F2203/04107

Abstract: A display device can include a display panel having data lines, gate lines and subpixels; a data driver to supply a video data signal including a first signal segment and a second signal segment maintaining a predetermined voltage difference to each of the data lines, and output readout data in response to signal sensing through each of the data lines; and a touch controller. Also, the video data signal serves as both a display driving signal and a touch driving signal, and in the video data signal, the second signal segment has a variable voltage representing a gray level for image display, the predetermined voltage difference is substantially constantly maintained so the video data signal serves as a touch driving signal, and the first signal segment has a variable voltage configured to maintain the predetermined voltage difference in accordance with the variable voltage of the second signal segment.

公开(公告)号：US11144147B2

公开(公告)日：2021-10-12

申请号：US16862139

申请日：2020-04-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3275

Abstract: Provided are a display device and a data driver. The disp lay device comprises a display panel in which a plurality of data lines and a plurality of gate lines are disposed and a plurality of subpixels are arrayed; a data driver supplying a video data signal including a first signal segment and a second signal segment maintaining a predetermined voltage difference to each of the plurality of data lines and outputting readout data in response to signal sensing through each of the plurality of data lines to which the video data signal is supplied; and a touch controller detecting a touch or determining touch coordinates in accordance with the readout data. In the present invention, both display driving and touch sensing are performed without a dedicated touch sensor structure. It is possible to simultaneously perform the display driving and the touch sensing.

公开(公告)号：US11079876B2

公开(公告)日：2021-08-03

申请号：US17115558

申请日：2020-12-08

Applicant: LG Display Co., Ltd.

Inventor： Jaehun Jun ,  HyeongWon Kang ,  MyungHo Shin

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

Abstract: Embodiments of the present disclosure relate to a touch display device, a touch driving circuit, and a touch driving method, and more specifically, to a touch display device, a touch driving circuit, and a touch driving method for enabling a signal-to-noise ratio (SNR) and sensitivity of touch sensing to be improved by implementing a code division sensing effect for the self-capacitance sensing scheme.