公开(公告)号：US11727863B2

公开(公告)日：2023-08-15

申请号：US17732375

申请日：2022-04-28

Applicant: Samsung Display Co., Ltd.

Inventor： Boyoung An ,  Ji-Woong Jeong ,  Wook Lee ,  Jungki Min

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/043 ,  G09G2300/0842 ,  G09G2320/041 ,  G09G2320/045

Abstract: A display device including pixels; a controller configured to generate first compensation data based on first sensing data with respect to threshold voltages of driving transistors of the pixels which are sensed during a first sensing period, to generate second compensation data based on second sensing data with respect to mobilities of the driving transistors of the pixels which are sensed during the first sensing period, to generate third compensation data based on third sensing data with respect to mobility change amounts of the driving transistors of the pixels which are sensed using image data for sensing compensated based on the first and second compensation data during a second sensing period, and to compensate input image data based on the first, second, and third compensation data to generate compensated image data; and a data driver configured to provide data voltages to the pixels based on the compensated image data.

公开(公告)号：US20230047875A1

公开(公告)日：2023-02-16

申请号：US17732375

申请日：2022-04-28

Applicant: Samsung Display Co., Ltd.

Inventor： BOYOUNG AN ,  JI-WOONG JEONG ,  Wook Lee ,  JUNGKI MIN

IPC: G09G3/32

Abstract: A display device including pixels; a controller configured to generate first compensation data based on first sensing data with respect to threshold voltages of driving transistors of the pixels which are sensed during a first sensing period, to generate second compensation data based on second sensing data with respect to mobilities of the driving transistors of the pixels which are sensed during the first sensing period, to generate third compensation data based on third sensing data with respect to mobility change amounts of the driving transistors of the pixels which are sensed using image data for sensing compensated based on the first and second compensation data during a second sensing period, and to compensate input image data based on the first, second, and third compensation data to generate compensated image data; and a data driver configured to provide data voltages to the pixels based on the compensated image data.

公开(公告)号：US11232751B2

公开(公告)日：2022-01-25

申请号：US16985536

申请日：2020-08-05

Applicant: Samsung Display Co., Ltd.

Inventor： Wook Lee

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

Abstract: A display device includes: a pixel circuit including a switching transistor connected to a data line, a storage capacitor connected to the switching transistor, a driving transistor connected to the storage capacitor, an organic light-emitting diode connected to the driving transistor and a sensing transistor connected between a sensing line and the driving transistor; and a data-sensing circuit including a first selector connected to the data line and the sensing line, a second selector connected to an output terminal of an amplifier, he first selector and a feedback capacitor, where the second selector selectively connects the output terminal of the amplifier to the first selector and the feedback capacitor, a third selector connected to the sensing line, and a fourth selector connected to the output terminal of the amplifier and the third selector.

公开(公告)号：US11145244B2

公开(公告)日：2021-10-12

申请号：US17009676

申请日：2020-09-01

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu Ban ,  Kyung Man Kim ,  Wook Lee

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US11030927B2

公开(公告)日：2021-06-08

申请号：US16673664

申请日：2019-11-04

Applicant: Samsung Display Co., LTD.

Inventor： Kyungman Kim ,  Wook Lee

IPC: G09G3/00 ,  G09G3/3258

Abstract: There is provided a method of performing a sensing operation in an organic light emitting diode (OLED) display device including a plurality of pixels, the method including performing a one-line sensing operation for pixels in one line among the plurality of pixels, determining whether a sensing error occurs based on a result of the one-line sensing operation, when the sensing error is determined not to occur, performing a frame-sensing operation for all of the plurality of pixels, detecting an abnormal sensing-data line from among frame-sensing data generated by the frame-sensing operation, and replacing the abnormal sensing-data line by a data line generated based on at least one sensing-data line that is adjacent to the abnormal sensing-data line in the frame-sensing data.

公开(公告)号：US10607548B2

公开(公告)日：2020-03-31

申请号：US16043794

申请日：2018-07-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wook Lee

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/3266

Abstract: A display device includes first pixels connected to first scan lines and data lines, a second pixel region including a second scan line and control line and at least one second pixel connected to the second scan line and the control line, a scan driver which drives at least the first scan lines, a sensor unit which is connected to the second pixel and senses current that flows through the second pixel in response to a sensing mode in a predetermined sensing period, and a timing controller which drives the sensor unit in response to the sensing mode, controls a driving order of the first scan lines in response to a first mode, and sets a division driving condition of the first scan lines in the first mode in response to a sensing signal input from the sensor unit in the sensing period.

公开(公告)号：US10283043B2

公开(公告)日：2019-05-07

申请号：US15215534

申请日：2016-07-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wook Lee

IPC: G09G3/3233

Abstract: An organic light emitting display device includes a display panel including a pixel disposed in an intersection of a data line, a feedback line, and a scan line, a data driver sequentially providing reference signals to the pixel though the data line, a sensing unit sequentially generating sensing signals based on voltages applied to the feedback line in response to the reference signals, and a timing controller calculating a compensation coefficient based on the sensing signals and compensating input data based on the compensation coefficient.

公开(公告)号：US09685117B2

公开(公告)日：2017-06-20

申请号：US15047383

申请日：2016-02-18

Applicant: Samsung Display Co., Ltd.

Inventor： Dong-Woo Lee ,  Wook Lee

IPC: G09G3/3258 ,  G09G5/02 ,  G09G3/3233 ,  G09G3/20 ,  G09G3/3283

CPC classification number: G09G3/3258 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3283 ,  G09G5/02 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2320/0233 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2330/00 ,  G09G2330/028

Abstract: A display device, a driving control device of the display device, and a driving control method are disclosed. In one aspect, the display device comprises a display unit consisting of a plurality of pixels including a light emitting element emitting light according to a driving current corresponding to a data signal; a scan driver transmitting a scan signal through a plurality of scan lines; a data driver transmitting a data signal through a plurality of data lines; a power supply unit supplying a driving voltage to drive a plurality of pixels through a power source wire; and a driving controller connected to the power source wire, obtaining an actual output voltage value of the driving voltage output from the power source voltage supply unit, and compensating a deviation of the driving voltage in a process step by using the actual output voltage value.

公开(公告)号：US20150022429A1

公开(公告)日：2015-01-22

申请号：US14222207

申请日：2014-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： Se-Byung Chae ,  Wook Lee

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G2310/0291

Abstract: A display device is disclosed. In one aspect, the display device includes a display panel including a plurality of pixels, and a data driver including a plurality of data output unit buffers electrically connected to a plurality of data lines electrically connected to the pixels. Each of the data output unit buffers includes an output terminal, a first transistor for applying a high level data voltage to the output terminal, and a second transistor for applying a low level data voltage to the output terminal. Each of the data output unit buffers also includes a first switch electrically connecting the first and second transistors to the output terminal, and a second switch electrically connecting a ground voltage to the output terminal.

Abstract translation: 公开了一种显示装置。 在一个方面，显示装置包括包括多个像素的显示面板和数据驱动器，其包括电连接到电连接到像素的多个数据线的多个数据输出单元缓冲器。 每个数据输出单元缓冲器包括输出端子，用于向输出端子施加高电平数据电压的第一晶体管，以及用于向输出端子施加低电平数据电压的第二晶体管。 每个数据输出单元缓冲器还包括将第一和第二晶体管电连接到输出端子的第一开关以及将接地电压电连接到输出端子的第二开关。

公开(公告)号：US12175944B2

公开(公告)日：2024-12-24

申请号：US18145078

申请日：2022-12-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokgyu Ban ,  Wook Lee ,  Jaehoon Shin

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image data.