公开(公告)号：US10908719B2

公开(公告)日：2021-02-02

申请号：US16195725

申请日：2018-11-19

Applicant: LG Display Co., Ltd.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: G06F3/041 ,  G06F3/044

Abstract: Disclosed are a touch display device, a touch driving circuit, and a touch driving method. A touch display device, a touch driving circuit, and a touch driving method is capable of supplying touch driving signals having different signal characteristics (e.g., driving frequencies) to touch electrodes or sensing groups by considering such touch electrode-specific or sensing group-specific difference. By this configuration, without reducing touch sensitivity, the touch sensing time required to sense all of the touch electrodes can be reduced, and a display driving time can be significantly lengthened, making it possible to implement a display requiring a large screen and high-resolution.

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：US10761619B2

公开(公告)日：2020-09-01

申请号：US15856394

申请日：2017-12-28

Applicant: LG Display Co., Ltd.

Inventor： Hyunkyu Park

IPC: G06F3/0354 ,  G06F3/041 ,  G08C17/02 ,  G06F3/044

Abstract: Disclosed are a touch-sensing system, a display device, an active pen, and a pen recognition method which can perform rapid and accurate pen recognition as the active pen provides pen identification information to the display device through a predetermined path, and which can also simultaneously process pen inputs through many active pens by distinguishably recognizing the many pens.

公开(公告)号：US20240152231A1

公开(公告)日：2024-05-09

申请号：US18460248

申请日：2023-09-01

Applicant: LG Display Co., Ltd.

Inventor： KiYong Kim ,  Hyunkyu Park

IPC: G06F3/041

CPC classification number: G06F3/04166 ,  G06F3/04164 ,  G06F3/044

Abstract: A touch display device and a display panel are disclosed. The touch display device comprises a display panel including touch electrodes arranged into touch blocks, each of the touch blocks including a respective portion of the touch electrodes; touch lines including touch block lines connected to the touch blocks and touch electrode lines connected to the touch electrodes; and a touch driving circuit configured to sense a touch of a touch block from the touch blocks based on a first touch signal received from a touch block line from the touch block lines that is connected to the touch block, and sense a touch of a touch electrode from the touch electrodes included in the touch block based on a second touch signal received from a touch electrode line from the touch electrode lines that is connected to the touch electrode.

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：US10680586B2

公开(公告)日：2020-06-09

申请号：US16208761

申请日：2018-12-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: H03K3/013 ,  H03L7/08 ,  H03L7/107 ,  G09G3/3225 ,  G09G3/36 ,  G06F3/041 ,  G06F1/08 ,  G09G3/20 ,  G06F3/044 ,  G09G5/00

Abstract: A spread spectrum clock generation apparatus includes a frequency modulator configured to generate an output clock signal, a frequency of which is variable with reference to a predetermined center frequency, by frequency-modulating an input clock signal according to a modulation profile signal; and a profile generator configured to generate a nested-modulation profile for controlling the frequency of the output clock signal, generate the modulation profile signal according to the nested-modulation profile, and output the modulation profile signal to the frequency modulator, wherein the profile generator is further configured to generate the nested-modulation profile by varying a cycle and a change range of a triangle modulation profile having a triangle waveform pattern having a pre-designated cycle and a pre-designated amplitude with reference to the center frequency in a time-frequency domain.