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：US20210201784A1

公开(公告)日：2021-07-01

申请号：US17127337

申请日：2020-12-18

Applicant: LG Display Co., Ltd.

Inventor： Jung-Jae KIM ,  Yong-Chul KWON ,  Soon-Dong CHO ,  Sang-Uk LEE ,  Dongwon PARK

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/20

Abstract: A light emitting display device includes a display panel, a power supply configured to supply a first potential voltage and a second potential voltage to the display panel, and a switch circuit unit configured to sense the first potential voltage applied to the display panel and to feedback the first potential voltage to the power supply, wherein the power supply compensates for the first potential voltage based on the first potential voltage fed back from the switch circuit unit and to output the compensated first potential voltage.

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：US20190197964A1

公开(公告)日：2019-06-27

申请号：US16225753

申请日：2018-12-19

Applicant: LG Display Co., Ltd.

Inventor： Soon-Dong CHO ,  Jung-Jae KIM ,  Sang-Uk LEE ,  Hyung-Jin CHOE

IPC: G09G3/3275 ,  G09G3/36

CPC classification number: G09G3/3275 ,  G09G3/3685 ,  G09G2310/0289 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0673 ,  G09G2330/021

Abstract: A display device can include a gate driver configured to drive gate lines of a panel; a data driver configured to drive data lines of the panel; a timing controller configured to control operations of the gate driver and the data driver; and a level shifter integrated circuit (IC) configured to receive a plurality of control signals from the timing controller, and generate and output a plurality gate control signals for controlling driving of the gate driver, in which the plurality of control signals include an on clock and an off clock, and the level shifter IC stores the on clock and the off clock in buffers based on one or more control signals from the timing controller, generates a plurality of scan clocks by logically processing the on clock and the off clock, and outputs the plurality of scan clocks to the gate driver.

公开(公告)号：US20180190861A1

公开(公告)日：2018-07-05

申请号：US15856454

申请日：2017-12-28

Applicant: LG Display Co., Ltd.

Inventor： Sang-Uk LEE ,  Won-Yong JANG

IPC: H01L33/00 ,  H01L33/62 ,  H01L27/15 ,  H05B33/08

CPC classification number: H01L33/0037 ,  H01L27/156 ,  H01L33/06 ,  H01L33/28 ,  H01L33/30 ,  H01L33/32 ,  H01L33/38 ,  H01L33/62 ,  H05B33/0824 ,  H05B33/0827

Abstract: Disclosed are a light emitting element, which may reduce power consumption, and a light emitting device including the same. The light emitting element includes an active layer emitting light by recombination of electrons and holes respectively supplied from first and second electrodes, and a control electrode controlling light emission of the active layer. Therefore, a transistor conventionally connected to the light emitting element may be omitted and thus power loss generated due to the transistor may be prevented.