公开(公告)号：US20240304145A1

公开(公告)日：2024-09-12

申请号：US18416559

申请日：2024-01-18

Applicant: Samsung Display Co., LTD.

Inventor： SUN-KOO KANG ,  JOONHO HYUN

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2044 ,  G09G2300/0819 ,  G09G2300/0823 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/023

Abstract: A display device includes a display panel receiving an emission driving signal, and a panel driver driving the display panel in a mode in which the driving frequency is varied. The panel driver includes an emission driving circuit outputting the emission driving signal, a data driving circuit outputting a data signal, and a driving controller. The data driving circuit inverts a polarity of the data signal in units of at least one driving frame in response to a first option signal. The driving controller includes a counting circuit which counts an operation cycle of the emission driving circuit to output a count value, and a first option control circuit which compares the count value with a preset first threshold value and sets the first option signal to an active state or an inactive state according to a comparison result.

公开(公告)号：US20170330523A1

公开(公告)日：2017-11-16

申请号：US15462059

申请日：2017-03-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： BYUNGKIL JEON ,  SUN-KOO KANG ,  SEUNGHWAN MOON ,  JUNPYO LEE

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G3/3688 ,  G09G2310/08 ,  G09G2320/0223

Abstract: A display apparatus includes a display panel, a gate driving part, and a data driving part. The display panel is configured to display an image, and includes a gate line and a data line. The gate driving part is configured to output a gate signal to the gate line. The data driving part is configured to output a data signal to the data line. A transition time of the data signal is a time when the data signal transitions from a low level to a high level, and the transition time of the data signal increases according to a decrease of a load of the display panel.

公开(公告)号：US20170323611A1

公开(公告)日：2017-11-09

申请号：US15461931

申请日：2017-03-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： GUHUI JO ,  SUN-KOO KANG ,  WONTAE KIM

IPC: G09G3/36

CPC classification number: G09G3/3677 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2310/08

Abstract: A display apparatus includes a display panel and a data driver. The display panel is configured to display an image and includes first through fourth data line groups. The first and second data line groups are adjacent to each other, and the third and fourth data line groups are adjacent to each other. The data driver includes a first data driving circuit configured to output first data voltages to the second data line group later than to the first data line group by a first delay time, and configured to output second data voltages to the fourth data line group later than to the third data line group by a second delay time that is different from the first delay time.

公开(公告)号：US20170004797A1

公开(公告)日：2017-01-05

申请号：US15145172

申请日：2016-05-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YOUNG-IL BAN ,  SUN-KOO KANG ,  TAE-GON KIM

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2310/027 ,  G09G2320/0673

Abstract: A data driver includes a first data voltage generator, a data converter and a second data voltage generator. The first data voltage generator is configured to generate a first data voltage based on first pixel data and configured to output the first data voltage to a first data line, the first pixel data being generated based on a first gamma curve. The data converter is configured to convert second pixel data to first converted pixel data, the second pixel data being generated based on the first gamma curve, the first converted pixel data being generated based on a second gamma curve different from the first gamma curve. The second data voltage generator is configured to generate a second data voltage based on the first converted pixel data and configured to output the second data voltage to a second data line.

Abstract translation: 数据驱动器包括第一数据电压发生器，数据转换器和第二数据电压发生器。 第一数据电压发生器被配置为基于第一像素数据生成第一数据电压并且被配置为将第一数据电压输出到第一数据线，所述第一像素数据是基于第一伽马曲线生成的。 数据转换器被配置为将第二像素数据转换为第一转换像素数据，第二像素数据是基于第一伽马曲线生成的，第一转换像素数据是基于与第一伽马曲线不同的第二伽马曲线生成的。 第二数据电压发生器被配置为基于第一转换像素数据生成第二数据电压，并且被配置为将第二数据电压输出到第二数据线。

公开(公告)号：US20240379069A1

公开(公告)日：2024-11-14

申请号：US18603409

申请日：2024-03-13

Applicant: Samsung Display Co., LTD.

Inventor： HYUNSEOP SONG ,  SUN-KOO KANG ,  YOUNGBIN KIM ,  BYUNGCHUL SHIN ,  EUNJEONG CHO

IPC: G09G3/3291 ,  G09G3/32

Abstract: A display device includes a display panel including pixels, a data driver which applies a dithering data voltage to the display panel, and a driving controller which determines whether to perform a dithering operation of applying the dithering data voltage to the display panel based on input image data. The display device alternately changes the dithering data voltage in units of one frame when the dithering operation is performed at a first dithering frequency or a third dithering frequency, and alternately changes the dithering data voltage in units of N frames when the dithering operation is performed at a second dithering frequency.

公开(公告)号：US20240169894A1

公开(公告)日：2024-05-23

申请号：US18236011

申请日：2023-08-21

Applicant: Samsung Display Co., LTD.

Inventor： BYUNG KI CHUN ,  SUN-KOO KANG ,  MYEONGBIN LIM ,  MIN-SEOK BAE ,  KANGHEE LEE

IPC: G09G3/32 ,  G09G3/3291

CPC classification number: G09G3/32 ,  G09G3/3291 ,  G09G2310/0275 ,  G09G2310/0291 ,  G09G2320/0276 ,  G09G2330/021 ,  G09G2330/028

Abstract: A data driving circuit includes: a reference voltage generator that receives a data control signal and generates a gamma reference voltage and a test reference voltage, a data driving unit that outputs a data signal for a pixel based on the gamma reference voltage, and an output circuit that outputs a test data voltage for a dummy pixel based on the test reference voltage.

公开(公告)号：US20230343296A1

公开(公告)日：2023-10-26

申请号：US18098922

申请日：2023-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： SUN-KOO KANG ,  HYUNHA YANG ,  MYEONGBIN LIM

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2330/028 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display device includes: a display panel, a data driver, and a scan driver. The data driver outputs data signals during a writing frame and outputs a bias voltage during a holding frame. The data driver includes a plurality of driving chips, and each of the driving chips includes: a gamma voltage generator, a data converter, a main output part for outputting corresponding data signals of the data signals during the writing frame, and a sub-output part for outputting the bias voltage during the holding frame. The gamma voltage generator of a selected driving chip among the plurality of driving chips is electrically connected to the sub-output parts disposed in the plurality of driving chips, respectively.

公开(公告)号：US20240185783A1

公开(公告)日：2024-06-06

申请号：US18364724

申请日：2023-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KYUNG-WOO KIM ,  CHEOLMIN KIM ,  SUN-KOO KANG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0626

Abstract: A display device includes a display panel including pixels connected to emission lines, a controller configured to receive a control signal, and to generate an emission start signal, a first emission clock signal and a second emission clock signal, and an emission driver configured to provide emission signals to the pixels through the emission lines in response to the emission start signal, the first emission clock signal and the second emission clock signal. The controller is further configured to determine an off period ratio for the pixels in units of two or more frame periods in response to the dimming signal. The control signal may be a dimming signal, a low power mode signal, or another type of signal indicative of operation of the display device.

公开(公告)号：US20170270889A1

公开(公告)日：2017-09-21

申请号：US15455342

申请日：2017-03-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SUN-KOO KANG ,  TAEGON KIM ,  SEUNGNAM PARK ,  OK-KWON SHIN

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2230/00 ,  G09G2310/0248 ,  G09G2310/0291 ,  G09G2320/0276 ,  G09G2330/021 ,  G09G2330/023

Abstract: A method of driving a display panel includes, a data driver outputting a precharge voltage to a plurality of pixels of the display panel during a first duration of a horizontal period, the data driver outputting a grayscale voltage to the pixels of the display panel during a second duration of the horizontal period and the data driver initializing the precharge voltage during the second duration of the horizontal period.

公开(公告)号：US20160171951A1

公开(公告)日：2016-06-16

申请号：US14818352

申请日：2015-08-05

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAE-HAN LEE ,  SUN-KOO KANG ,  SOOYEON KIM ,  YOUNG-IL BAN

IPC: G09G5/00

CPC classification number: G09G3/3688 ,  G09G3/006 ,  G09G2300/0426 ,  G09G2310/027

Abstract: A display device includes a display panel, a gate driver, a data driver, and a driving control unit. The display panel includes pixels connected to a corresponding one of gate lines and a corresponding one of data lines. The gate driver drives the gate lines. The data driver includes first pads and second pads. The first pads are connected to each of first data lines of the data lines, and the second pads are connected to each of second data lines of the data lines. The driving control unit provides control signals and a data signal to the data driver, and to control the gate driver. The data driver includes a digital-to-analog converter and a switching circuit. The digital-to-analog converter converts the data signal into analog signals. The switching circuit sequentially outputs the analog signals to the first pads during a test mode.

Abstract translation: 显示装置包括显示面板，栅极驱动器，数据驱动器和驱动控制单元。 显示面板包括连接到对应的一条栅极线和对应的一条数据线的像素。 栅极驱动器驱动栅极线。 数据驱动器包括第一焊盘和第二焊盘。 第一焊盘被连接到数据线的每个第一数据线，并且第二焊盘连接到数据线的每条第二数据线。 驱动控制单元向数据驱动器提供控制信号和数据信号，并且控制门驱动器。 数据驱动器包括数模转换器和开关电路。 数模转换器将数据信号转换为模拟信号。 开关电路在测试模式期间将模拟信号顺序地输出到第一焊盘。