公开(公告)号：US20200341579A1

公开(公告)日：2020-10-29

申请号：US16926397

申请日：2020-07-10

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  SoonDong CHO ,  Wonyong JANG

IPC: G06F3/041 ,  G06F3/044 ,  G09G5/00

Abstract: Disclosed are a touch display device, a touch display panel, and a driving circuit. More specifically, the present disclosure provides a touch display device, a touch display panel, and a driving circuit which can simultaneously perform display driving and touch driving through a ground modulation technique.

公开(公告)号：US20230306895A1

公开(公告)日：2023-09-28

申请号：US18201011

申请日：2023-05-23

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  Sang-Uk LEE ,  Taehwa PARK ,  SoonDong CHO ,  Wonyong JANG

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2330/021 ,  G09G2310/0297 ,  G09G2360/10 ,  G09G2310/0291

Abstract: A power supply including a first converter configured to convert an input voltage into a first output voltage; a second converter configured to convert the first output voltage into a second output voltage; a first feedback circuit configured to output a first pulse width modulation (PWM) signal to the first converter to control a level of the first output voltage; and a mode controller configured to compare the input voltage and a reference voltage and determine whether the first converter operates in a first mode or a second mode based on the compared result. When the input voltage is less than or equal to the reference voltage, the first converter boosts the input voltage and output the boosted voltage as the first output voltage in the first mode, and when the input voltage is greater than the reference voltage, the first converter bypasses the input voltage and output the bypassed voltage as the first output voltage in the second mode.

公开(公告)号：US20230154381A1

公开(公告)日：2023-05-18

申请号：US17941903

申请日：2022-09-09

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  Sang-Uk LEE ,  Taehwa PARK ,  SoonDong CHO ,  Wonyong JANG

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2330/021 ,  G09G2310/0291 ,  G09G2360/10 ,  G09G2310/0297

Abstract: A display device can include a display panel having a plurality of pixels disposed on a substrate, and a power supplier configured to supply a driving voltage to the display panel. The power supplier can include a first converter configured to receive an input voltage supplied from an external system and convert the input voltage into a boost voltage, a second converter configured to convert the boost voltage into the driving voltage, a first feedback unit configured to output a first pulse width modulation (PWM) signal to the first converter so that the boost voltage is proportional to a first reference voltage, and a second feedback unit configured to output a second PWM signal to the second converter so that the driving voltage is proportional to a second reference voltage.

公开(公告)号：US20190102022A1

公开(公告)日：2019-04-04

申请号：US16142640

申请日：2018-09-26

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  SoonDong CHO ,  Wonyong JANG

IPC: G06F3/041 ,  G06F3/044 ,  G09G5/00

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04107 ,  G09G5/006 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2370/08

Abstract: Disclosed are a touch display device, a touch display panel, and a driving circuit. More specifically, the present disclosure provides a touch display device, a touch display panel, and a driving circuit which can simultaneously perform display driving and touch driving through a ground modulation technique.

公开(公告)号：US20170192608A1

公开(公告)日：2017-07-06

申请号：US15167341

申请日：2016-05-27

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  SoonDong CHO ,  Wonyong JANG

IPC: G06F3/041 ,  G06F1/32 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F1/3262 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04102 ,  G06F2203/04103

Abstract: The present embodiments relate to a display device, a touch sensing circuit, and a driving method, and more specifically, to a display device, a touch sensing circuit, and a driving method, which may: detect the power mode; create touch driving signals that have different amplitudes depending on the detected power mode; and drive touch electrodes for sensing the touch by using the created touch driving signals in order to thereby provide a high touch sensitivity regardless of the type of power mode.