公开(公告)号：US20200184890A1

公开(公告)日：2020-06-11

申请号：US16688048

申请日：2019-11-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Nakyoon KIM ,  Jisu KIM

IPC: G09G3/3233 ,  H02J7/00 ,  G09G3/3291

Abstract: A display device can include a display unit including data lines, gate lines crossing the data lines and pixels; a voltage generating unit configured to generate driving voltages for driving the display unit based on a voltage from a battery; and a data driver configured to convert input image data into data voltages and output the data voltages to the data lines, wherein the voltage generating unit includes a battery current control unit configured to control a magnitude of a low potential driving voltage applied to cathode electrodes of the pixels according to an amount of a battery output current flowing from the battery to the voltage generating unit, and wherein the battery current control unit is configured to increase the low potential driving voltage when the battery output current is equal to or greater than a predetermined threshold value.

公开(公告)号：US20230143178A1

公开(公告)日：2023-05-11

申请号：US17974320

申请日：2022-10-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Hong Soon KIM ,  Chan PARK ,  Nakyoon KIM

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3291 ,  G09G3/2074 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2330/021

Abstract: Embodiments of the disclosure relate to a display device and a data driving circuit. Specifically, there may be provided a display device with enhanced power efficiency and a data driving circuit by providing a display device including a display panel divided into an always-on display area displaying information during a standby screen period and a black grayscale area except for the always-on display area, an image display voltage output circuit outputting a data voltage to input to the always-on display area during the standby screen period, and a voltage stabilization circuit outputting a constant voltage to input to at least a partial area of the black grayscale area during the standby screen period.

公开(公告)号：US20240221651A1

公开(公告)日：2024-07-04

申请号：US18395832

申请日：2023-12-26

Applicant: LG Display Co., Ltd.

Inventor： Chan PARK ,  Nakyoon KIM ,  Sojeong KIM

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/061 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: Disclosed are a display device in which a scan timing for applying a stress voltage to a pixel is adjusted based on an operating frequency to prevent a flicker phenomenon even when the operating frequency varies, and a method for operating the same. The display device includes a display panel including a plurality of pixel circuits; and a gate driver circuit configured to provide an emission signal, a first scan signal, a second scan signal, a third scan signal, and a fourth scan signal to each of the plurality of pixel circuits, wherein when the display device operates in a variable refresh rate (VRR) mode, the display device is configured to adjust a time at and/or a time duration for which the third scan signal is enabled based on an operating frequency in each of a refresh frame and an anode reset frame, wherein the third scan signal is defined as a signal for applying an on-bias stress voltage to a pixel circuit.

公开(公告)号：US20230215401A1

公开(公告)日：2023-07-06

申请号：US18065610

申请日：2022-12-13

Applicant: LG Display Co., Ltd.

Inventor： Jogtaek KIM ,  Nakyoon KIM ,  Hogeun KOO

IPC: G09G5/00

CPC classification number: G09G5/008 ,  G09G2330/021 ,  G09G2310/061 ,  G09G2370/10

Abstract: Embodiments of the disclosure relate to a control circuit, a display device, and a method for driving a main processor. Specifically, there may be provided a control circuit, a display device, and a method for driving a main processor which may reduce power consumption in the transmission/reception circuit connected with the interface by powering off at least one of the source transmission/reception circuit or sink transmission/reception circuit electrically connected with the auxiliary channel AUX during at least a partial period of the vertical blank period.