公开(公告)号：US10672336B2

公开(公告)日：2020-06-02

申请号：US14964093

申请日：2015-12-09

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyunjae Lee ,  Taeyoung Park ,  Dongjun Choi ,  Dongsup Shim ,  Ohgun Kwon

IPC: G09G3/3233

Abstract: A method for driving an organic light emitting display according to an embodiment includes applying an initial value of a high potential driving power and a test pattern to a display panel and sensing changes in driving characteristics of the display panel while varying a voltage level of the high potential driving power from the initial value, deciding whether or not a sensed driving characteristic value of the display panel satisfies a predetermined condition, setting a voltage level of the high potential driving power obtained when the sensed driving characteristic value satisfies the predetermined condition, as a reference value of the high potential driving power, and adding a voltage margin to the reference value of the high potential driving power to determine a final value of the high potential driving power, and driving the display panel using the final value of the high potential driving power.

公开(公告)号：US12087236B2

公开(公告)日：2024-09-10

申请号：US17863230

申请日：2022-07-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Wonsuk Lee ,  Hyunjae Lee

IPC: G09G3/3275 ,  G09G3/20 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3275 ,  G09G3/2074 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0413 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2320/0673 ,  G09G2320/0686

Abstract: Discussed is a display device including a display panel including first and second display areas that differ in the number of sub-pixels per unit area, a data driver that generates data voltages, and supplies the data voltages to the sub-pixels in the corresponding areas, and a power supply part that generates first display area high-potential power for the first display area and second display area high-potential power for the second display area, and supplies the first and second display area high-potential powers to the corresponding display areas. Each of the sub-pixels includes a switching transistor connected to a gate line and a data line, and a pixel circuit including a driving transistor that is turned on in response to a data voltage stored in a storage capacitor, and supplies a driving current to an organic light-emitting diode positioned between a first power line and a second power line.

公开(公告)号：US10977996B2

公开(公告)日：2021-04-13

申请号：US16850832

申请日：2020-04-16

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyunjae Lee ,  Taeyoung Park ,  Dongjun Choi ,  Dongsup Shim ,  Ohgun Kwon

IPC: G09G3/3233

Abstract: An organic light emitting display includes a display panel including a plurality of pixels, each pixel among the plurality of pixels including an organic light emitting diode (OLED) connected between a first potential driving power having an initial value and a second potential driving power, and a driving thin film transistor (TFT) connected between the first potential driving power and the second potential driving power; a driver integrated circuit (IC) configured to drive the display panel; a power IC configured to apply the first potential driving power to the display panel; and a sensing unit configured to sense changes in driving characteristics of the display panel each time the first potential driving power varies from an initial value of the first potential driving power in a state where the initial value of the first potential driving power and a test pattern are applied to the display panel.

公开(公告)号：US10311798B2

公开(公告)日：2019-06-04

申请号：US14975093

申请日：2015-12-18

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyunjae Lee ,  Taeyoung Park ,  Dongsup Shim

IPC: G09G3/30 ,  G09G3/3291 ,  G09G3/3233 ,  G09G3/20

Abstract: An organic light emitting diode display includes pixels in which an amount of current flowing in an organic light emitting diode of each pixel is determined depending on a difference between a data voltage and a reference voltage, a control signal generator differently generating a screen brightness control signal depending on a driving mode, a register adjusting unit independently adjusting a reference voltage register value and a gamma register value at each of red (R), green (G), and blue (B) pixels depending on the screen brightness control signal, a reference voltage generator generating the reference voltage of each of the R, G, and B colors based on the reference voltage register value, and a data voltage generator generating the data voltage of each of the R, G, and B colors based on the gamma register value.

公开(公告)号：US11410613B2

公开(公告)日：2022-08-09

申请号：US16665918

申请日：2019-10-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Wonsuk Lee ,  Hyunjae Lee

IPC: G09G3/3275 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/20 ,  G09G3/3291

Abstract: A display device can include a display panel comprising a first display area and a second display area that differ in the number of sub-pixels per unit area, a gamma part that generates a first area gamma voltage applied to the first display area and a second area gamma voltage applied to the second display area, and a data driver that generates data voltages by applying the first area gamma voltage to video data displayed in the first display area and applying the second area gamma voltage to video data displayed in the second display area and supplies the data voltages to the sub-pixels in the corresponding areas.

公开(公告)号：US09607565B2

公开(公告)日：2017-03-28

申请号：US14577026

申请日：2014-12-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyunjae Lee

IPC: G09G3/36

CPC classification number: G09G3/3674 ,  G09G3/3677 ,  G09G2310/0286 ,  G09G2310/0289

Abstract: Disclosed is a display device that comprises: a display panel; a level shifter shifting a start pulse, an initialization pulse, and N (N is an integer equal to or greater than 2)-phase shift clocks to a predetermined voltage; and a gate shift register comprising multiple stages respectively connected to scan lines of the display panel and shifting the start pulse in response to the N-phase shift clocks within a driving period defined by the start pulse to sequentially output a scan pulse, wherein the stages are simultaneously reset in response to the initialization pulse and the N-phase shift clocks within an initialization period preceding the driving period.

公开(公告)号：US09324261B2

公开(公告)日：2016-04-26

申请号：US13629274

申请日：2012-09-27

Applicant: LG Display Co., Ltd.

Inventor： Hyunjae Lee

IPC: G09G5/10 ,  G09G3/32

CPC classification number: G09G3/3208 ,  G09G2320/02 ,  G09G2330/021 ,  G09G2330/025 ,  G09G2330/028 ,  G09G2330/04 ,  G09G2340/0435

Abstract: An organic light emitting diode (OLED) display includes a display panel including data lines, scan lines crossing the data lines, and pixels which each include an organic light emitting diode and are arranged in a matrix form, a power generator which is enabled in a normal mode to generate a high potential power voltage for driving the display panel and is disabled in a low power mode, and a panel driving circuit which drives the data lines and the scan lines, disables the power generator in the low power mode to cut off an output of the power generator, and supplies an internal power less than the high potential power voltage to the display panel to reduce the high potential power voltage in the low power mode.

Abstract translation: 有机发光二极管（OLED）显示器包括：显示面板，包括数据线，与数据线交叉的扫描线，以及每个包括有机发光二极管并且以矩阵形式排列的像素;功率发生器， 以产生用于驱动显示面板的高电位电压并且在低功率模式下被禁用，并且驱动数据线和扫描线的面板驱动电路禁用低功率模式中的发电机切断 发电机的输出，并且向显示面板提供小于高电位电压的内部功率以降低低功率模式中的高电位电压。