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：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：US20210020134A1

公开(公告)日：2021-01-21

申请号：US16929810

申请日：2020-07-15

Applicant: LG Display Co., Ltd.

Inventor： Se-Dong PARK ,  Soon-Dong CHO ,  Dong-Ju KIM ,  Hee-Jung HONG ,  Jung-Jae KIM

IPC: G09G3/36

Abstract: A display device includes a display panel and a level shifter. The display panel displays images. The level shifter includes a signal pad through which a clock signal to drive the display panel is output and a reverse signal pad through which a reverse clock signal different from the clock signal is output, and the reverse signal pad is in an electrically floated state.

公开(公告)号：US20180061314A1

公开(公告)日：2018-03-01

申请号：US15390162

申请日：2016-12-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Jung-Jae KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045

Abstract: Disclosed is an organic light emitting diode (OLED) display device. The OLED display device includes a target current setting unit connected to a pixel via a data line, to set a target current meeting a data voltage during a sampling period before a holding period to a target current to drive an OLED element during the holding period. The pixel includes a drive thin film transistor (TFT) for driving the OLED element, a first switching TFT to connect the drive TFT to a first power line for the sampling period such that the drive TFT serves as a diode, a second switching TFT to connect a source electrode of the drive TFT to the data line for the sampling period, and a capacitor connected between gate and source electrodes of the drive TFT, to store a drive voltage for the drive TFT determined based on the target current.

公开(公告)号：US20200013340A1

公开(公告)日：2020-01-09

申请号：US16574827

申请日：2019-09-18

Applicant: LG DISPLAY CO., LTD.

Inventor： Jung-Jae KIM

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: A method of driving an organic light-emitting diode (OLED) display device can include, during an initialization period, supplying a reference voltage (Vref), via a first amplifier, to a gate electrode of a driving thin film transistor (TFT) connected to an OLED element and charging an initialization voltage in a source electrode of the driving TFT; during a sensing period, supplying the reference voltage (Vref), via the first amplifier, to the gate electrode of the driving TFT, and charging the source electrode of the driving TFT from the initialization voltage to a reference sensing voltage based on the reference voltage (Vref) minus a threshold voltage (Vth) of the driving TFT; and during a sampling period, supplying a data voltage (Vdata), via the first amplifier, to the gate electrode of the driving TFT, sensing the reference sensing voltage, via a third amplifier, and supplying the reference sensing voltage, via a second amplifier, to the source electrode of the driving TFT.

公开(公告)号：US20230005435A1

公开(公告)日：2023-01-05

申请号：US17943779

申请日：2022-09-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Soon-Dong CHO ,  Jung-Jae KIM ,  Min-Gyu PARK ,  Jae-Won HAN ,  Dong-Won PARK

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display device includes a display panel including pixels, and data lines and gate lines connected to the pixels, a timing controller configured to output source driving bit information and gate driving bit information through an intra-interface signal, a source driver configured to generate data driving signal based on the source driving bit information and to supply the data driving signal to the data lines, and a gate driver configured to generate a gate driving signal based on the gate driving bit information and to supply the gate driving signal to the gate lines, wherein the intra-interface signal is configured with predetermined data transmission units and includes both the source driving bit information and the gate driving bit information every 1 data transmission unit.

公开(公告)号：US20210183319A1

公开(公告)日：2021-06-17

申请号：US17124116

申请日：2020-12-16

Applicant: LG Display Co., Ltd.

Inventor： Soon-Dong CHO ,  Jung-Jae KIM ,  Min-Gyu PARK ,  Jae-Won HAN ,  Dong-Won PARK

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display device includes a display panel including pixels, and data lines and gate lines connected to the pixels, a timing controller configured to output source driving bit information and gate driving bit information through an intra-interface signal, a source driver configured to generate data driving signal based on the source driving bit information and to supply the data driving signal to the data lines, and a gate driver configured to generate a gate driving signal based on the gate driving bit information and to supply the gate driving signal to the gate lines, wherein the intra-interface signal is configured with predetermined data transmission units and includes both the source driving bit information and the gate driving bit information every 1 data transmission unit.

公开(公告)号：US20180190198A1

公开(公告)日：2018-07-05

申请号：US15839052

申请日：2017-12-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Jung-Jae KIM

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0295 ,  G09G2320/043

Abstract: An organic light-emitting diode (OLED) display device can include a pixel and a data driver. The pixel includes a driving thin film transistor (TFT) to drive an OLED element, a first switching TFT to connect a data line to a gate electrode of the driving TFT, a second switching TFT to connect a reference line to a source electrode of the driving TFT and a capacitor connected between the gate electrode and the source electrode of the driving TFT. The data driver includes a first amplifier to drive the data line with a reference voltage or a data voltage, a second amplifier to drive the reference line with an initialization voltage, and a third amplifier to sense a voltage of the reference line and supply a reference sensing voltage to the second amplifier, in which the reference line voltage is based on a threshold voltage of the driving TFT.