公开(公告)号：US09734764B2

公开(公告)日：2017-08-15

申请号：US14857609

申请日：2015-09-17

Applicant: Samsung Display Co., Ltd.

Inventor： Gilbae Park ,  Heesook Park ,  Joonsuk Baik ,  Jihye Eom

IPC: G09G5/00 ,  G09G3/3258 ,  G09G3/3208 ,  G09G3/36

CPC classification number: G09G3/3258 ,  G09G3/3208 ,  G09G3/3666 ,  G09G2300/043 ,  G09G2320/0223 ,  G09G2360/16

Abstract: A voltage drop compensator for a display device and the display device including the same are disclosed. In one aspect, the voltage drop compensator includes a region divider, an expected current calculator, a conversion matrix generator, a representative voltage calculator, and a compensator. The region divider is configured to divide the display panel into a plurality of regions, and the display panel includes a plurality of power lines and a plurality of pixels configured to receive a power voltage via the power lines. The expected current calculator is configured to calculate an expected current to flow in each of the regions based on input data provided to each of the regions. The conversion matrix generator configured to generate a conversion matrix based on a line resistance of each of the power lines and convert the expected current to a representative voltage provided to the regions based on the conversion matrix.

公开(公告)号：US11922889B2

公开(公告)日：2024-03-05

申请号：US18073174

申请日：2022-12-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyungkeun Park ,  Jungtaek Kim ,  Kyunho Kim ,  Joonsuk Baik ,  Sekeun Lee ,  Sangsu Han

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2330/10

Abstract: A display apparatus includes a display panel in which a plurality of pixels and a plurality of data lines and a plurality of sensing lines connected to the pixels are arranged, a first driving circuit connected to data lines and sensing lines arranged in a first pixel column and a second pixel column adjacent to the first pixel column, and a second driving circuit connected to data lines and sensing lines arranged in a third pixel column adjacent to the second pixel column and a fourth pixel column adjacent to the third pixel column.

公开(公告)号：US11915650B2

公开(公告)日：2024-02-27

申请号：US17986342

申请日：2022-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Hayong Jung ,  Jung-Taek Kim ,  Joonsuk Baik ,  Jaehoon Shin ,  Wook Lee

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A sensing circuit of a display device includes a sensing line initialization circuit which substantially simultaneously initializes a first sensing line and a second sensing line in a first sub-sensing period of a sensing period, a first line selection switch which couples the first sensing line to a sensing channel in the first sub-sensing period, a second line selection switch which couples the second sensing line to the sensing channel in a second sub-sensing period of the sensing period, and the sensing channel which samples a first sensing voltage of the first sensing line in a first sampling period of the first sub-sensing period, and samples a second sensing voltage of the second sensing line in a second sampling period of the second sub-sensing period. The second sensing line is not initialized during a period from the first sampling period to the second sampling period.

公开(公告)号：US20230092540A1

公开(公告)日：2023-03-23

申请号：US18073174

申请日：2022-12-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyungkeun Park ,  Jungtaek Kim ,  Kyunho Kim ,  Joonsuk Baik ,  Sekeun Lee ,  Sangsu Han

IPC: G09G3/3275 ,  G09G3/3233

Abstract: A display apparatus includes a display panel in which a plurality of pixels and a plurality of data lines and a plurality of sensing lines connected to the pixels are arranged, a first driving circuit connected to data lines and sensing lines arranged in a first pixel column and a second pixel column adjacent to the first pixel column, and a second driving circuit connected to data lines and sensing lines arranged in a third pixel column adjacent to the second pixel column and a fourth pixel column adjacent to the third pixel column.

公开(公告)号：US20220076637A1

公开(公告)日：2022-03-10

申请号：US17345505

申请日：2021-06-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyungkeun Park ,  Jungtaek Kim ,  Kyunho Kim ,  Joonsuk Baik ,  Sekeun Lee ,  Sangsu Han

IPC: G09G3/3275 ,  G09G3/3233

Abstract: A display apparatus includes a display panel in which a plurality of pixels and a plurality of data lines and a plurality of sensing lines connected to the pixels are arranged, a first driving circuit connected to data lines and sensing lines arranged in a first pixel column and a second pixel column adjacent to the first pixel column, and a second driving circuit connected to data lines and sensing lines arranged in a third pixel column adjacent to the second pixel column and a fourth pixel column adjacent to the third pixel column.

公开(公告)号：US20210383763A1

公开(公告)日：2021-12-09

申请号：US17237197

申请日：2021-04-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KYUNHO KIM ,  Sangan Kwon ,  Yong-Jin Shin ,  Joonsuk Baik

IPC: G09G3/3291 ,  H01L27/32

Abstract: An organic light emitting diode (OLED) display includes pixel rows, and a panel driver configured to drive the display panel. The panel driver includes a determining circuit configured to select one pixel row from the plurality of pixel rows, to determine load data based on input image data for the one pixel row, and to determine target mobility data corresponding to the load data, a sensing circuit configured to generate mobility sensing data corresponding to mobility values of driving transistors of a plurality of pixels included in the one pixel row by performing a mobility sensing operation on the one pixel row, and a current control circuit configured to compare the mobility sensing data and the target mobility data to generate a result, and to adjust a panel current flowing through the display panel according to the result.

公开(公告)号：US20210295783A1

公开(公告)日：2021-09-23

申请号：US17207613

申请日：2021-03-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yong-Jin Shin ,  Kyunho Kim ,  Joonsuk Baik ,  Bongim Park ,  Ukjae Jang

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a driving controller, and a data driver. The display panel is configured to display an image based on input image data. The driving controller is configured to determine whether the input image data include a display quality deteriorating pattern. The driving controller is configured to determine a first compensation value for compensating a first area disposed at a first side of a main area of the display quality deteriorating pattern and a second compensation value for compensating a second area disposed at a second side of the main area opposite to the first side of the main area, according to a position of the main area. The data driver is configured to apply a data voltage to the display panel using the first compensation value and the second compensation value.

公开(公告)号：US12062339B2

公开(公告)日：2024-08-13

申请号：US18369439

申请日：2023-09-18

Applicant: Samsung Display Co., Ltd.

Inventor： Jung-Taek Kim ,  Byeong-Doo Kang ,  Jae Woo Ryu ,  Joonsuk Baik ,  Sekeun Lee

IPC: G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3266 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2310/0278 ,  G09G2310/0294 ,  G09G2310/061

Abstract: In a display device, each of pixels includes a light emitting element and a pixel circuit which is connected to the light emitting element at a first node and drives the light emitting element in response to a corresponding driving scan signal among driving scan signals during a display period. The pixel circuit is connected to a corresponding readout line among readout lines at a second node. The sensing circuit senses a potential of the first node through the corresponding readout line during a blank period, and each of frames includes the display period and the blank period. At least two driving scan signals among the driving scan signals respectively include a plurality of rewriting periods, each of which is activated during the blank period corresponding thereto, and the rewriting periods of the driving scan signals have different durations from each other.

公开(公告)号：US12033563B2

公开(公告)日：2024-07-09

申请号：US18239384

申请日：2023-08-29

Applicant: Samsung Display Co., LTD.

Inventor： Jung-Taek Kim ,  Seungho Park ,  Joonsuk Baik

IPC: G09G3/20 ,  G09G3/00 ,  G09G3/3233 ,  G09G3/3275

CPC classification number: G09G3/2096 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2330/12

Abstract: A display device includes a display panel which operates in a sensing mode or an emission mode, and a data driver electrically connected to the display panel. The display panel includes a first pixel, a second pixel, a third pixel, a fourth pixel, a fifth pixel, a sixth pixel, a first scan line, a second scan line, a first data line, the second pixel. The data driver includes a first switch, a second switch, and an analog front end. The sensing mode includes a first period in which a first scan signal is provided to the first scan line and the first switch is turned on, a second period in which the first scan signal is provided to the first scan line and the second switch is turned on, and a third period in which a second scan signal is provided to the second scan line.

公开(公告)号：US11749162B2

公开(公告)日：2023-09-05

申请号：US17235141

申请日：2021-04-20

Applicant: Samsung Display Co., Ltd.

Inventor： Kyunho Kim ,  Yong-Jin Shin ,  Joonsuk Baik ,  Sung-Mo Yang

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G2300/0452

Abstract: A display device includes a display panel including a first pixel and a second pixel disposed adjacent to the first pixel along a first direction, a gate driver configured to provide gate signals to the display panel, a data driver configured to provide data signals to the first and second pixels and a driving controller configured to receive an image data, configured to provide a data signal to the data driver based on the image data, and configured to determine whether a white balance of a current image data corresponding to the second pixel is within a set range. The driving controller calculates the data voltage provided to the second pixel based on the white balance of the current image data corresponding to the second pixel, a previous image data corresponding to the first pixel, and the current image data.