公开(公告)号：US12165586B2

公开(公告)日：2024-12-10

申请号：US18234105

申请日：2023-08-15

Applicant: Samsung Display Co., LTD.

Inventor： Sukhun Lee ,  Bon-Seog Gu ,  Hongsoo Kim ,  Myungwoo Lee

IPC: G09G3/3233

Abstract: A display device includes a display panel including a plurality of pixels and that displays an image in each of a plurality of frames, a driving controller that drives the plurality of frames with a plurality of driving frequencies, respectively, and a voltage controller that provides a first voltage and a second voltage, and the driving controller drives one of the plurality of frames with a first driving frequency and drives another one of the plurality of frames with a second driving frequency, and the voltage controller provides the second voltage to be repeated in a first period in the one of the plurality of frames and provides the second voltage to be repeated in a second period in the another one of the plurality of frames.

公开(公告)号：US12014662B2

公开(公告)日：2024-06-18

申请号：US17397000

申请日：2021-08-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung Roh ,  Hongsoo Kim ,  Sangan Kwon ,  Sehyuk Park ,  Hyo Jin Lee

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0202 ,  G09G2310/0267 ,  G09G2310/027 ,  G09G2320/0247 ,  G09G2320/10 ,  G09G2330/023

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel including a gate line and a data line displays an image based on input image data. The gate driver outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The driving controller includes an area divider dividing the input image data into first and second area data, a first variable frequency driver determining a first driving frequency of the first area data based on a flicker value according to a grayscale value and generating a first data signal of the first driving frequency and a second variable frequency driver determining a second driving frequency of the second area data based on a flicker value according to a grayscale value and generating a second data signal of the second driving frequency.

公开(公告)号：US11410607B2

公开(公告)日：2022-08-09

申请号：US17306259

申请日：2021-05-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jinyoung Roh ,  Hongsoo Kim ,  Sehyuk Park ,  Hyojin Lee ,  Jaekeun Lim

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3291 ,  G09G3/3266

Abstract: An organic light emitting diode display device includes a display panel including a plurality of pixels, and a panel driver configured to drive the display panel. Each pixel includes a driving transistor, a compensating transistor including first and second compensating sub-transistors coupled in series between a gate node and a drain of the driving transistor, a storage capacitor, and an organic light emitting diode. The panel driver calculates an average representative gray level of input image data in a plurality of frame periods, determines a voltage level of a node controlling voltage based on the average representative gray level, and provides the node controlling voltage to each of the plurality of pixels to control a voltage of a node between the first and second compensating sub-transistors.

公开(公告)号：US11302259B2

公开(公告)日：2022-04-12

申请号：US17143191

申请日：2021-01-07

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jinyoung Roh ,  Bonghyun You ,  Hyojin Lee ,  Jaekeun Lim

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver, a driving controller and a power voltage generator. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line. The data driver outputs a data voltage to a data line. The driving controller drives display areas of the display panel in different driving frequencies. The power voltage generator outputs a data power voltage to the data driver. The driving controller outputs an output data enable signal including a writing period having an active signal and a holding period having an inactive signal for the respective display areas. The power voltage generator generates the data power voltage having a high power voltage level during the writing period and a low power voltage level in at least a portion of the holding period.

公开(公告)号：US12136375B2

公开(公告)日：2024-11-05

申请号：US17582805

申请日：2022-01-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jiyoun Kim ,  Sehyuk Park ,  Hongsoo Kim ,  Jaekeun Lim

IPC: G09G5/06 ,  G09G3/20

Abstract: A driving controller of a display device controls a scan driving circuit to sequentially drive a first group of scan lines among a plurality of scan lines to an active level during a first low-frequency frame when the operation mode is a low frequency mode and to sequentially drive a second group of scan lines among the plurality of scan lines to the active level during a second low-frequency frame, outputs an image data signal according to a first arrangement order of a plurality of color pixels in a first row during the first low-frequency frame, and outputs the image data signal according to a second arrangement order of the plurality of color pixels in a second row during the second low-frequency frame.

公开(公告)号：US11869439B2

公开(公告)日：2024-01-09

申请号：US17717997

申请日：2022-04-11

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jinyoung Roh ,  Bonghyun You ,  Hyojin Lee ,  Jaekeun Lim

IPC: G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  G09G3/3275 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/103 ,  G09G2330/023 ,  G09G2330/028

Abstract: A display apparatus includes a display panel, a gate driver, a data driver, a driving controller and a power voltage generator. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line. The data driver outputs a data voltage to a data line. The driving controller drives display areas of the display panel in different driving frequencies. The power voltage generator outputs a data power voltage to the data driver. The driving controller outputs an output data enable signal including a writing period having an active signal and a holding period having an inactive signal for the respective display areas. The power voltage generator generates the data power voltage having a high power voltage level during the writing period and a low power voltage level in at least a portion of the holding period.

公开(公告)号：US11756469B2

公开(公告)日：2023-09-12

申请号：US17903423

申请日：2022-09-06

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jaekeun Lim ,  Jinyoung Roh ,  Hyojin Lee

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/08 ,  G09G2320/0209

Abstract: A display device includes a display panel including a first display region and a second display region surrounding the first display region, where a first pixel having a first size is disposed in the first display region, and a second pixel having a second size is disposed in the second display region, a gate driver which applies a gate signal to a gate line, a data driver which applies a data voltage to a data line, and a timing controller which controls the gate driver and the data driver. The gate line includes a first gate line connected to both the first pixel and the second pixel, and a second gate line connected only to the second pixel. The data line includes a first data line which does not transmit the data voltage to the second pixel connected to the second gate line, and a second data line which transmits the data voltage to the second pixel connected to the second gate line.

公开(公告)号：US11670218B2

公开(公告)日：2023-06-06

申请号：US17518617

申请日：2021-11-04

Applicant: Samsung Display Co., Ltd.

Inventor： Jiyoun Kim ,  Hongsoo Kim ,  Sehyuk Park ,  Junheyung Jung ,  Manseung Cho

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0291

Abstract: A data driver for providing data voltages to a display panel includes a digital-to-analog converting block, an option storing block, a data swap block and an output buffer block. The digital-to-analog converting block converts line data into the data voltages. The option storing block stores a pixel arrangement option representing a pixel arrangement structure of the display panel. The data swap block is connected to the digital-to-analog converting block and the option storing block, and selectively performs a data swap operation that swaps the data voltages based on the pixel arrangement option and whether the line data are odd line data or even line data. The output buffer block is connected to the data swap block and outputs the data voltages on which the data swap operation is selectively performed to data lines.

公开(公告)号：US11468853B2

公开(公告)日：2022-10-11

申请号：US17389466

申请日：2021-07-30

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung Roh ,  Hongsoo Kim ,  Sehyuk Park ,  Hyojin Lee ,  Jaekeun Lim

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233

Abstract: A gate driver includes a first stage, a second stage, a third stage and a fourth stage. The first stage includes a first clock terminal receiving a first clock signal, a second clock terminal receiving a second clock signal, a carry terminal receiving a vertical start signal and an output terminal outputting a first gate output signal. The second stage includes a first clock terminal receiving the second clock signal, a second clock terminal receiving the first clock signal, a carry terminal receiving the vertical start signal and an output terminal outputting a second gate output signal. The third stage includes a first clock terminal receiving the second clock signal, a second clock terminal receiving the first clock signal, a carry terminal receiving the first gate output signal and an output terminal outputting a third gate output signal.

公开(公告)号：US11538421B2

公开(公告)日：2022-12-27

申请号：US16824377

申请日：2020-03-19

Applicant: Samsung Display Co., Ltd.

Inventor： Hongsoo Kim ,  Sehyuk Park ,  Hyo Jin Lee ,  Sangan Kwon ,  Jinyoung Roh ,  Sukhun Lee ,  Jun Heyung Jung

IPC: G09G3/3291

Abstract: A display device includes display device includes: a display panel including a plurality of pixels; a data driver configured to generate data voltages based on output image data, and to provide the data voltages to the plurality of pixels; and a controller configured to receive input image data and input frequency information from a host processor, and to provide the output image data to the data driver, wherein the controller includes an adaptive refresh block configured to: determine a target frequency by analyzing the input image data; determine a masking ratio based on an input frequency represented by the input frequency information and the target frequency; and selectively output the input image data as the output image data by performing a masking operation on the input image data with the masking ratio.