公开(公告)号：US10181290B2

公开(公告)日：2019-01-15

申请号：US15991837

申请日：2018-05-29

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  Wonyong Jang

IPC: G09G5/00 ,  G09G3/3258 ,  G09G3/20 ,  G09G3/36

Abstract: Embodiments relate to a display device and a method of operating the display device. The display device includes a power supply circuit configured to generate a gate voltage at an output terminal of the power supply circuit based on an input voltage to supply the gate signal to the pixels of the panel. The display device generates a switching pulse signal for a predetermined time period after the input voltage dropping below the predetermined threshold voltage. The display device generates the gate voltage at a first voltage level responsive to the switching pulse signal, the gate voltage at the first voltage level higher than the gate voltage at a second voltage level absent the switching pulse signal. Charges stored in pixels are discharged by applying the gate voltage to the pixels through gate lines, responsive to the input voltage dropping below the predetermined threshold voltage.

公开(公告)号：US11635841B1

公开(公告)日：2023-04-25

申请号：US17890799

申请日：2022-08-18

Applicant: LG Display Co., Ltd.

Inventor： Dongju Kim ,  Wonyong Jang ,  Hoon Jang ,  Juno Hur

IPC: G06F3/041 ,  G09G3/20 ,  H01L27/32

Abstract: A touch display device operates between a normal mode and a sleep mode, the touch display device including: a display panel; a touch panel; a data drive circuit to supply a data voltage; a touch drive circuit to supply a touch driving signal; a timing controller to supply a data control signal; a micro-control unit to supply a touch synchronization signal; and a power supply to supply a first and second driving voltage, the power supply including: a first converter to output the first driving voltage; a second converter to output the second driving voltage; a first switching unit to supply the first or second input voltage to the first converter; a second switching unit to supply the first or second input voltage to the second converter; and a switching control circuit to control the first and second switching units. Therefore, power consumption of the power supply is reduced.

公开(公告)号：US10055056B2

公开(公告)日：2018-08-21

申请号：US15167341

申请日：2016-05-27

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  SoonDong Cho ,  Wonyong Jang

IPC: G09G3/36 ,  G09G3/3275 ,  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.

公开(公告)号：US10747347B2

公开(公告)日：2020-08-18

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

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：US20160189624A1

公开(公告)日：2016-06-30

申请号：US14975629

申请日：2015-12-18

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  Wonyong Jang

IPC: G09G3/32 ,  G09G3/36

CPC classification number: G09G3/3258 ,  G09G3/20 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2310/0267 ,  G09G2310/063 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2330/02 ,  G09G2330/027

Abstract: Embodiments relate to a display device and a method of operating the display device. The display device includes a power supply circuit configured to generate a gate voltage at an output terminal of the power supply circuit based on an input voltage to supply the gate signal to the pixels of the panel. The display device generates a switching pulse signal for a predetermined time period after the input voltage dropping below the predetermined threshold voltage. The display device generates the gate voltage at a first voltage level responsive to the switching pulse signal, the gate voltage at the first voltage level higher than the gate voltage at a second voltage level absent the switching pulse signal. Charges stored in pixels are discharged by applying the gate voltage to the pixels through gate lines, responsive to the input voltage dropping below the predetermined threshold voltage.

Abstract translation: 实施例涉及显示装置和操作显示装置的方法。 显示装置包括：电源电路，被配置为基于输入电压在电源电路的输出端产生栅极电压，以将栅极信号提供给面板的像素。 显示装置在输入电压下降到预定阈值电压之前的预定时间周期内产生开关脉冲信号。 所述显示装置响应于所述开关脉冲信号，以不存在所述开关脉冲信号的第二电压电平，将所述栅极电压以比所述栅极电压高的第一电压电平产生第一电压电平。 响应于输入电压下降到预定阈值电压以下，通过栅极线将栅极电压施加到像素来放电存储在像素中的电荷。

公开(公告)号：US12051357B2

公开(公告)日：2024-07-30

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 ,  G09G3/36 ,  H02M3/156 ,  H02M3/158

CPC classification number: G09G3/2096 ,  G09G3/3696 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2330/021 ,  G09G2360/10

Abstract: A power supply includes a first converter configured to convert an input voltage into a first 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 outputs the boosted voltage as the first output voltage in the first mode. Further, when the input voltage is greater than the reference voltage, the first converter bypasses the input voltage and outputs the bypassed voltage as the first output voltage in the second mode.

公开(公告)号：US11699384B2

公开(公告)日：2023-07-11

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 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2330/021 ,  G09G2360/10

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：US11150757B2

公开(公告)日：2021-10-19

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 ,  G09G5/00 ,  G06F3/044

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：US10008152B2

公开(公告)日：2018-06-26

申请号：US14975629

申请日：2015-12-18

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  Wonyong Jang

IPC: G09G5/00 ,  G09G3/3258 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3258 ,  G09G3/20 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2310/0267 ,  G09G2310/063 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2330/02 ,  G09G2330/027

Abstract: Embodiments relate to a display device and a method of operating the display device. The display device includes a power supply circuit configured to generate a gate voltage at an output terminal of the power supply circuit based on an input voltage to supply the gate signal to the pixels of the panel. The display device generates a switching pulse signal for a predetermined time period after the input voltage dropping below the predetermined threshold voltage. The display device generates the gate voltage at a first voltage level responsive to the switching pulse signal, the gate voltage at the first voltage level higher than the gate voltage at a second voltage level absent the switching pulse signal. Charges stored in pixels are discharged by applying the gate voltage to the pixels through gate lines, responsive to the input voltage dropping below the predetermined threshold voltage.