公开(公告)号：US20160018916A1

公开(公告)日：2016-01-21

申请号：US14581310

申请日：2014-12-23

Applicant: LG DISPLAY CO., LTD.

Inventor： KiJeong LEE ,  KeukSang KWON ,  SeungChul PARK

IPC: G06F3/041 ,  G09G5/00

CPC classification number: G06F3/041 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04112 ,  G09G3/2092 ,  G09G3/3208 ,  G09G3/3611 ,  G09G5/00 ,  G09G2300/0876 ,  G09G2310/0208 ,  G09G2310/0213 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2354/00

Abstract: An in-cell touch display device. A panel has a plurality of data lines, a plurality of gate lines and a plurality of touch electrodes disposed thereon. A touch driving signal is applied to the plurality of touch electrodes when a driving mode is a touch mode. A data driver drives the plurality of data lines. A gate driver drives the plurality of gate lines. The gate driver sequentially outputs a scanning signal for driving the plurality of gate lines to the plurality of gate lines when the driving mode is a display mode, and outputs a load-free driving signal corresponding to the touch driving signal to at least one gate line when the driving mode is the touch mode. A level shifter generates the load-free driving signal. A multiplexer inputs a scanning voltage or the load-free driving signal to the gate driver depending on the driving mode.

Abstract translation: 一种嵌入式触摸显示装置。 面板具有多个数据线，多条栅极线和设置在其上的多个触摸电极。 当驱动模式是触摸模式时，触摸驱动信号被施加到多个触摸电极。 数据驱动器驱动多条数据线。 栅极驱动器驱动多条栅极线。 当驱动模式为显示模式时，栅极驱动器顺序地输出用于驱动多条栅极线的扫描信号到多条栅极线，并且将与触摸驱动信号相对应的无负载驱动信号输出到至少一条栅极线 当驾驶模式是触摸模式时。 电平转换器产生无负载驱动信号。 根据驱动模式，多路复用器将扫描电压或无负载驱动信号输入到栅极驱动器。

公开(公告)号：US20220187941A1

公开(公告)日：2022-06-16

申请号：US17357407

申请日：2021-06-24

Applicant: LG DISPLAY CO., LTD.

Inventor： SeungChul PARK ,  KiJeong LEE ,  MinKi KIM ,  ChangHwan SEO

IPC: G06F3/041

Abstract: A touch driving circuit, a touch display device, and a touch driving method are discussed, which are capable of reducing power consumption by dividing into an active mode and an idle mode according to a touch sensing type, shortening the touch driving period in the idle mode and reducing some operations related to the image displaying function.

公开(公告)号：US20240036676A1

公开(公告)日：2024-02-01

申请号：US18378546

申请日：2023-10-10

Applicant: LG DISPLAY CO., LTD.

Inventor： SeungChul PARK ,  KiJeong LEE ,  MinKi KIM ,  ChangHwan SEO

IPC: G06F3/041

CPC classification number: G06F3/04166 ,  G06F3/0416 ,  G06F3/041661 ,  G06F3/04162 ,  G06F3/0412 ,  G09G2310/08 ,  G06F2203/04108 ,  G06F3/03545

Abstract: A touch display device includes a display panel including a plurality of touch electrodes, a touch driving circuit configured to operate in a first mode and a second mode according to a touch sensing type and detect a touch presence or a touch position based on a touch sensing signal received from the plurality of touch electrodes, and a timing controller. The timing controller can generate a first type of touch synchronization signal having a first level for displaying a first image during a first display period of a first display frame and a second level for detecting the touch position during a touch driving period of the first display frame, and supply the first type of touch synchronization signal to the touch driving circuit to operate the touch driving circuit in the first mode.

公开(公告)号：US20220206608A1

公开(公告)日：2022-06-30

申请号：US17357522

申请日：2021-06-24

Applicant: LG DISPLAY CO., LTD.

Inventor： SeungMok SHIN ,  Hyunkyung KIM ,  ChangHwan SEO ,  SeungChul PARK ,  KiJeong LEE

IPC: G06F3/041 ,  G09G3/20

Abstract: Discussed are a display panel which can be applied to a touch display device by changing a design of a conductive layer to electrically connect a plurality of pads to a plurality of common electrodes, and a display device and a touch display panel device thereof.

公开(公告)号：US20190179475A1

公开(公告)日：2019-06-13

申请号：US16212124

申请日：2018-12-06

Applicant: LG Display Co., Ltd.

Inventor： ChangHwan SEO ,  NamKyun CHO ,  SeungChul PARK ,  Eunji SEO

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

Abstract: Disclosed is a display apparatus capable of sensing a pen touch without malfunction even when a user's hand or palm touches the display apparatus. The display apparatus includes a touch driving circuit dividing a plurality of touch electrodes arranged in a display panel into a plurality of touch groups, supplying a common voltage to the plurality of touch electrodes at each of a plurality of display periods, and sensing a position of a touch pen through some of the plurality of touch electrodes at each of a plurality of pen sensing periods, wherein the touch driving circuit supplies an uplink signal to some of the plurality of touch groups at each of at least one pen position sensing period among the plurality of pen sensing periods and senses a downlink signal transmitted from the touch pen through the touch groups to which the uplink signal has been supplied to generate pen touch raw data.