公开(公告)号：US20230154436A1

公开(公告)日：2023-05-18

申请号：US17943296

申请日：2022-09-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JINHO LEE ,  SEUNGHWAN PARK ,  YOUNGWOON CHOI ,  SUNGJAE PARK ,  SEUNGHO PARK ,  KITAE YOON ,  NAMJAE LIM

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/16 ,  G09G2360/16

Abstract: A display device including: a display panel including first through N-th pixel rows; and a panel driver configured to sequentially receive first through N-th line data for the first through the N-th pixel rows in each frame period, and to drive the display panel based on the first through the N-th line data, the panel driver including: a current control circuit configured to determine a current control value for a (K+1 )-th pixel row based on the first through K-th line data for the first through K-th pixel rows received in a current frame period and (K+1 )-th through the N-th line data for the (K+1)-th through the N-th pixel rows received in a previous frame period; and a data correction circuit configured to correct the (K+1)-th line data for the (K+1)-th pixel row based on the current control value in the current frame period.

公开(公告)号：US20220036834A1

公开(公告)日：2022-02-03

申请号：US17443606

申请日：2021-07-27

Applicant: SAMSUNG DISPLAY CO,. LTD.

Inventor： SANGMYEON HAN ,  SEUNGHO PARK ,  BYOUNGKWAN AN ,  JAEHOON LEE

IPC: G09G3/3291 ,  H01L27/32

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The display panel includes a pixel. The driving controller generates an age compensation value using a sensed age generated based on sensing data of the pixel and an accumulated age generated based on accumulated grayscale values of input image data, generates a final age based on the age compensation value, and compensates a grayscale value of the input image data based on a final age to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.

公开(公告)号：US20250124853A1

公开(公告)日：2025-04-17

申请号：US18731256

申请日：2024-06-01

Applicant: Samsung Display Co., LTD.

Inventor： MINGYU KIM ,  HUISU KIM ,  SEYUN KIM ,  SEUNGHO PARK

IPC: G09G3/32 ,  G09G3/20

Abstract: A display device include: a display panel including first to third pixels, a data driver for providing first to third data voltages to the first to third pixels, and a scan driver for providing first and second scan signals to each of the first to third pixels. The scan driver performs a first active scan operation of sequentially providing the first and second scan signals to the first to third pixels in a first frame period, and perform a dummy scan operation of sequentially providing the second scan signal to the first to third pixels after the first active scan operation. The data driver changes a voltage level of at least one of the first to third data voltages in an overlap period in which the dummy scan operation and a second active scan operation of a second frame period are simultaneously performed.

公开(公告)号：US20240428742A1

公开(公告)日：2024-12-26

申请号：US18750577

申请日：2024-06-21

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SEUNGHO PARK ,  SUNG-MO YANG

IPC: G09G3/3275 ,  G09G3/32

Abstract: A driving controller includes an overcurrent load calculator calculating a load of an input image signal, comparing the load and a reference load, and outputting a first signal corresponding to a first comparison result, an overcurrent reference controller analyzing a grayscale of the input image signal and outputting one of a first reference current signal corresponding to the grayscale and a second reference current signal, whose current level is higher than that of the first reference current signal, as a reference current signal, a current sensor receiving a feedback current signal, comparing a current level of the feedback current signal and a current level of the reference current signal, and outputting a second signal corresponding to a second comparison result, and a voltage controller outputting a voltage control signal for adjusting a voltage level of a driving voltage, based on the first signal and the second signal.

公开(公告)号：US20240312395A1

公开(公告)日：2024-09-19

申请号：US18483959

申请日：2023-10-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JUNG-TAEK KIM ,  HONG-KYU KIM ,  SEUNGHO PARK

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/2096 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/36 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/0626 ,  G09G2360/16

Abstract: A display device includes a data driver providing a data voltage to each of multiple pixels, a scan driver providing first and second scan signals to each of the pixels, and a controller to control the data driver and the scan driver. The scan driver performs a first active scan operation that sequentially provides the first and second scan signals to the pixels in an active period of a first frame period, and initiates a dummy scan operation that sequentially provides the second scan signal to the pixels in a blank period of the first frame period. When a second frame period starts before the dummy scan operation for the pixel in a last row, the data driver changes a level of the data voltage in an overlap period in which the dummy scan operation and a second active scan operation in the second frame period are simultaneously performed.

公开(公告)号：US20240144856A1

公开(公告)日：2024-05-02

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：US20240096279A1

公开(公告)日：2024-03-21

申请号：US18213898

申请日：2023-06-26

Applicant: Samsung Display Co., Ltd.

Inventor： NAMJAE LIM ,  SEOKGYU BAN ,  SANGMYEON HAN ,  SEUNGHO PARK ,  BYOUNGKWAN AN

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/10

Abstract: A display device includes a display unit which includes a plurality of pixels, a degradation controller which includes a voltage compensator configured to calculate a driving voltage increase amount based on a degradation amount of a maximum degradation pixel among the pixels and a global current controller configured to calculate calculates a first scale factor for compensating a power increase amount according to the driving voltage increase amount, a driving voltage provider which is configured to increase a driving voltage provided to the pixels based on the driving voltage increase amount, a data compensator which is configured to generate output image data by scaling the first scale factor to grayscale values of input image data, and a data driver which is configured to provide data voltages to the pixels based on the output image data.

公开(公告)号：US20230230525A1

公开(公告)日：2023-07-20

申请号：US17895648

申请日：2022-08-25

Applicant: Samsung Display Co., Ltd.

Inventor： WONWOO JANG ,  SEUNGHO PARK

IPC: G09G3/20 ,  G09G3/3208 ,  G06T7/13

CPC classification number: G09G3/2096 ,  G09G3/3208 ,  G06T7/13 ,  G09G2320/0276 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0233

Abstract: A display device includes a display panel and a driving circuit that receives an input image signal and provides an output image signal corresponding to the input image signal to the display panel. The driving circuit includes an edge and slope detector that detects an edge of the input image signal, and determines an angle between the edge and a virtual line parallel to a first direction, a weight calculator that determines a weight, based on the edge and the angle, and a rendering module that compensates for the input image signal, based on the weight, and outputs the output image signal. The weight is determined through an arithmetic operation between the edge and the angle.

公开(公告)号：US20250140186A1

公开(公告)日：2025-05-01

申请号：US18749653

申请日：2024-06-21

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  DAE-SIK LEE ,  SEUNGHO PARK

IPC: G09G3/3233 ,  G09G3/20

Abstract: Disclosed is a driving controller which includes a luminance controller calculating a load of an input image signal, an overcurrent control determiner comparing the load and a reference load and outputting an enable signal corresponding to a result of comparing the load and the reference load, a current sensor receiving an input current through a first voltage line transferring a first driving voltage, comparing the input current and a reference current in response to the enable signal, and outputting a first signal corresponding to a result of comparing the input current and the reference current, a switching circuit connected between a second voltage line and a first node and adjusting a current flowing between the second voltage line and the first node in response to a gate control signal, and a current controller outputting the gate control signal corresponding to the current in response to the first signal.

公开(公告)号：US20240362766A1

公开(公告)日：2024-10-31

申请号：US18596017

申请日：2024-03-05

Applicant: Samsung Display Co., Ltd.

Inventor： MINGYU KIM ,  SEYUN KIM ,  SEUNGHO PARK ,  HYUNGWOO YIM

IPC: G06T7/00 ,  G09G3/20

CPC classification number: G06T7/0004 ,  G09G3/20 ,  G06T2207/30108 ,  G09G2320/0233 ,  G09G2330/10

Abstract: An inspection system for inspecting a display device including pixels includes a camera for capturing the display device and providing a sensing image signal and an inspection device for receiving the sensing image signal and outputting a compensation signal for compensating for luminance of a defective pixel. The inspection device includes an image detector outputting a sensing input signal corresponding to the sensing image signal, a defect coordinate detector detecting the defective pixel based on the sensing input signal and outputting defect coordinates indicating a position of the defective pixel, an image analyzer analyzing consistency of the defect coordinates based on the sensing image signal and the sensing input signal and outputting final coordinates, and a defect compensation calculator outputting a compensation signal for adjusting luminance of compensation pixels adjacent to the defective pixel from among the pixels based on the final coordinates.