公开(公告)号：US20200020296A1

公开(公告)日：2020-01-16

申请号：US16503850

申请日：2019-07-05

Applicant: LG DISPLAY CO., LTD.

Inventor： Dongju KIM ,  Soondong CHO ,  Hoon JANG ,  Jongwoo KIM ,  Juno HUR

IPC: G09G3/36

Abstract: A display device and a method of driving the same are provided. The display device includes a control signal generator that generates a control signal, a first demultiplexer that time-divides a data voltage from a first channel of a data driver and distributes the data voltage from the first channel to two or more data lines, in response to the control signal, a signal delay part that delays the control signal, and a second demultiplexer that time-divides a data voltage from a second channel of the data driver and distributes the data voltage from the second channel to other two or more data lines, in response to the control signal delayed by the signal delay part.

公开(公告)号：US20200098312A1

公开(公告)日：2020-03-26

申请号：US16544032

申请日：2019-08-19

Applicant: LG Display Co., Ltd.

Inventor： Soondong CHO ,  Hoon JANG ,  Jongwoo KIM ,  Juno HUR ,  Jungjae KIM ,  Dongju KIM

IPC: G09G3/3225 ,  G09G3/3266 ,  G09G3/3275

Abstract: A scan driver comprises a level shifter configured to output varied clock signals that have different frequencies for at least two consecutive periods; and a shift register operating based on the varied clock signals output from the level shifter and outputting scan signals.

公开(公告)号：US20190204968A1

公开(公告)日：2019-07-04

申请号：US16155632

申请日：2018-10-09

Applicant: LG Display Co., Ltd.

Inventor： Juno HUR ,  Soondong CHO ,  Hoon JANG ,  Dongju KIM

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36

Abstract: Provided is a display device including a level shifter generating an output clock swinging between a first voltage and a third voltage during a display period and swinging between a second voltage and the third voltage during a touch sensing period. Waveform distortion of a no-load alternating current (AC) signal may be prevented without eliminating a stabilizing capacitor of the level shifter, and thus, sensing sensitivity may be increased by reducing noise of a touch sensor signal.

公开(公告)号：US20210183318A1

公开(公告)日：2021-06-17

申请号：US17111179

申请日：2020-12-03

Applicant: LG Display Co., Ltd.

Inventor： Dongju KIM ,  Minki KIM ,  Inho YEO ,  Juno HUR

IPC: G09G3/3266 ,  G09G3/3275

Abstract: Disclosed is a display device including: a display panel; a timing controller generating image data corresponding to an input image, and generating and outputting a first start signal, an on clock, and an off clock; a level shifter generating a second start signal in synchronization with the first start signal, generating gate clocks that swing to a predetermined voltage and have multiple phases, by using the on clock and the off clock, and outputting the generated gate clocks; a shift register including multiple stages connected to gate lines of the display panel, respectively, and outputting a scan signal sequentially to the gate lines by using the second start signal and the gate clocks; and a data driving circuit supplying a data voltage corresponding to the image data to data lines of the display panel in synchronization with the scan signal.

公开(公告)号：US20210020137A1

公开(公告)日：2021-01-21

申请号：US16930951

申请日：2020-07-16

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  Juno HUR ,  Dong Ju KIM ,  Soon Dong CHO

IPC: G09G3/36

Abstract: The present disclosure relates to a level shifter and a display device using the same, and the level shifter includes a first transistor configured to increase a voltage of an output signal, a second transistor configured to lower a voltage of the output signal, a first driver configured to vary a gate voltage of the first transistor in response to a first Vgs signal being varied within a transition time of the output signal, and a second driver configured to vary a gate voltage of the second transistor in response to a second Vgs signal being varied within a transition time of the output signal.

公开(公告)号：US20180188865A1

公开(公告)日：2018-07-05

申请号：US15812702

申请日：2017-11-14

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  Soon-Dong CHO ,  Juno HUR ,  Dong-Ju KIM ,  Won-Yong JANG

IPC: G06F3/041 ,  G06F3/044 ,  H03F3/45

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04107 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2310/08 ,  G09G2330/02 ,  H03F3/45179 ,  H03F2203/45116 ,  H03F2203/45151

Abstract: Disclosed are a touch power circuit and a touch display device in which an operational amplifier buffers an input pulse having a first voltage and a higher second voltage alternate, and uses the buffered input pulse to provide an output pulse. The operational amplifier includes a non-inverting input terminal to which the input pulse is supplied, an inverting input terminal connected to the output terminal, and an output unit driven according to a result of amplifying a difference between a voltage of the non-inverting input terminal and a voltage of the inverting input terminal and configured to charge and discharge the output terminal. The circuits and devices may further include an offset voltage applier configured to supply an offset voltage having a first polarity to the non-inverting input terminal and/or the inverting input terminal to level-shift the input pulse.

公开(公告)号：US20160189662A1

公开(公告)日：2016-06-30

申请号：US14966147

申请日：2015-12-11

Applicant: LG Display Co., Ltd.

Inventor： Soondong CHO ,  Juno HUR ,  Dongju KIM

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3681 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/025 ,  G09G2330/12

Abstract: A liquid crystal display device includes a liquid crystal panel configured to display an image, a driver configured to drive the liquid crystal panel, a timing controller configured to control the driver, and a power supply configured to be supplied by an input voltage, supply a common voltage to the liquid crystal panel, and temporarily vary a compensation ratio of the common voltage when a pattern causing a drop of the input voltage is displayed by the display device.

Abstract translation: 一种液晶显示装置，包括：被配置为显示图像的液晶面板，被配置为驱动液晶面板的驱动器，被配置为控制驱动器的定时控制器以及被配置为由输入电压提供的电源， 当由显示装置显示出导致输入电压下降的图案时，临时改变公共电压的补偿比。