公开(公告)号：US20200051516A1

公开(公告)日：2020-02-13

申请号：US16531970

申请日：2019-08-05

Applicant: LG Display Co., Ltd.

Inventor： Jongwoo KIM ,  Jeongju YANG

IPC: G09G3/36

Abstract: A liquid crystal display device comprises a display panel; a source driver configured to provide source outputs to the display panel; a memory configured to store polarities of the source outputs with respect to a panel self-refresh operation and a normal refresh operation that is not the panel self-refresh operation as a first inversion pattern and to store the polarities of source outputs with respect to a low refresh rate operation as a second inversion pattern; and an LRR controller configured to control the polarities of the source outputs with the first inversion pattern in panel self-refresh frames before the low refresh rate operation is performed, to control the polarities of the source outputs with a third inversion pattern referring to the first inversion pattern in low refresh rate frames in which the low refresh rate operation is performed, and to control the polarities of the source outputs with a fourth inversion pattern referring to the second inversion pattern in normal refresh frames after the low refresh rate operation ends.

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：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：US20130278585A1

公开(公告)日：2013-10-24

申请号：US13692714

申请日：2012-12-03

Applicant: LG DISPLAY CO., LTD.

Inventor： Myungkook MOON ,  Jongwoo KIM

IPC: G09G3/36

CPC classification number: G09G3/36 ,  G09G3/2077 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2340/0435

Abstract: A liquid crystal display includes a frame rate control (FRC) device which adds an FRC compensation value to digital video data using a plurality of FRC patterns defining subpixels, to which the FRC compensation value will be written, and a data driving circuit which converts the digital video data received from the FRC device into a data voltage and invert a polarity of the data voltage based on a previously determined inversion method. The FRC device counts frame periods and increases a frame count value each time the frame period changes. The FRC device changes to a next FRC pattern in previously determined order in response to the frame count value, and holds or skips the frame count value when the frame period reaches a previously determined time.

Abstract translation: 液晶显示器包括帧速率控制（FRC）装置，其使用定义子像素的多个FRC图案将FRC补偿值添加到数字视频数据，FRC补偿值将被写入到其上;数据驱动电路，其将 从FRC设备接收的数字视频数据成为数据电压，并且基于预先确定的反转方法反转数据电压的极性。 FRC设备对帧周期进行计数，并在帧周期变化时增加帧计数值。 FRC设备响应于帧计数值以先前确定的顺序改变为下一个FRC模式，并且当帧周期达到预先确定的时间时保持或跳过帧计数值。