公开(公告)号：US20230186829A1

公开(公告)日：2023-06-15

申请号：US18079895

申请日：2022-12-13

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE ,  JUNG-TAEK KIM

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0842 ,  G09G2330/12 ,  G09G2330/10 ,  G09G2330/02 ,  G09G2360/16

Abstract: A display device may include a display panel including a plurality of pixel rows, a power supply providing a power voltage to the display panel, and an overcurrent protector shutting down the power supply when at least one of the pixel rows is burnt. The overcurrent protector may include a sensing controller sensing a first current of at least one first pixel row of the display panel in a first frame period, and sensing a second current of the first pixel row in a second frame period after the first frame period when the first current is greater than or equal to a first threshold value. The overcurrent protector may further include a burnt determiner determining whether the first pixel row is burnt, and providing a shutdown signal to the power supply when the first pixel row is burnt.

公开(公告)号：US20220068203A1

公开(公告)日：2022-03-03

申请号：US17366889

申请日：2021-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE ,  BYOUNGKWAN AN

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a sensing circuit to measure a sensing current value of each of the pixels during a frame period, wherein the frame period includes an active period and a blank period following the active period, and a driving controller to calculate a deterioration weight based on the sensing current value and a reference current value, and to generate output image data by applying the deterioration weight to input image data.

公开(公告)号：US20170256228A1

公开(公告)日：2017-09-07

申请号：US15403646

申请日：2017-01-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAEHOON LEE ,  JAI-HYUN KOH ,  CHANG SIN KIM ,  BONGHYUN YOU ,  JEONG BONG LEE

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3614 ,  G09G3/3677 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08

Abstract: A display apparatus includes a timing controller, a data driver and a display panel. The timing controller generates a mode selection signal and output image data in response to input image data. The data driver generates first through N-th data voltages in response to the mode selection signal and the output image data and applies the first through N-th data voltages to first through N-th data lines. The display panel is connected to the first through N-th data lines. During the first operation mode, each of a polarity pattern of first through M-th data voltages and a polarity pattern of (M+1)-th through N-th data voltages repeats a first polarity pattern. During the second operation mode, the polarity pattern of the first through M-th data voltages repeats the first polarity pattern, and the polarity pattern of the (M+1)-th through N-th data voltages repeats a second polarity pattern.

公开(公告)号：US20240420650A1

公开(公告)日：2024-12-19

申请号：US18821635

申请日：2024-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/3291 ,  H10K59/121

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：US20230410701A1

公开(公告)日：2023-12-21

申请号：US18211189

申请日：2023-06-16

Applicant: Samsung Display Co., LTD.

Inventor： JAEHOON LEE ,  JONG WOOK KIM

IPC: G09G3/00 ,  G09G5/37

CPC classification number: G09G3/006 ,  G09G5/37 ,  G09G2320/041

Abstract: A display device determines a target temperature based on an average luminance of each of the panel blocks, calculates a temperature change amount of each of the panel blocks by multiplying a difference between the target temperature and a previous prediction temperature of each of the panel blocks determined before a reference period by a block temperature coefficient of the panel blocks, and calculates a current prediction temperature of each of the panel blocks by adding the temperature change amount of each of the panel blocks to the previous prediction temperature of each of the panel blocks, the panel blocks include a first panel block and second panel blocks adjacent to the first panel block, and the block temperature coefficient of the first panel block is determined based on the target temperature of the first panel block and the target temperature of each of the second panel blocks.

公开(公告)号：US20230260448A1

公开(公告)日：2023-08-17

申请号：US17960470

申请日：2022-10-05

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0852 ,  G09G2310/0278 ,  G09G2320/0233

Abstract: A pixel includes: a first transistor including a gate coupled to a first node, a first terminal, and a second terminal coupled to a second node; a first capacitor coupled between the first and second nodes; a second transistor including a gate receiving a first signal, a first terminal coupled to a data line, and a second terminal coupled to the first node; a third transistor including a gate receiving a second signal, a first terminal receiving a reference voltage, and a second terminal coupled to the first node; a fourth transistor including a gate receiving a third signal, a first terminal coupled to the second node, and a second terminal receiving an initialization voltage; a light emitting element including an anode; and a fifth transistor including a gate receiving a fourth signal, a first terminal coupled to the second node, and a second terminal coupled to the anode.

公开(公告)号：US20230230548A1

公开(公告)日：2023-07-20

申请号：US18119299

申请日：2023-03-09

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE ,  DEOKHO KANG ,  JONG WOOK KIM ,  YOUNGWOON CHOI

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A display device includes a display panel including a plurality of pixels, an image data corrector configured to generate a corrected image data by adjusting an image data and a data driver providing data signals to the plurality of pixels based on the corrected image data. The image data corrector divides the display panel into a plurality of unit areas, and adjust the image data for a unit area among the plurality of unit areas by using a full image load for the entire display panel, a first image load for the unit area, and a second image load for peripheral unit areas surrounding the unit area among the plurality of unit areas.

公开(公告)号：US20240312402A1

公开(公告)日：2024-09-19

申请号：US18420109

申请日：2024-01-23

Applicant: Samsung Display Co., LTD.

Inventor： KYOUNGHO LIM ,  SEUNGHO PARK ,  JAEHOON LEE ,  YOONJU KIM ,  Jongha SHIN ,  KITAE YOON

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/103 ,  G09G2340/0464

Abstract: Disclosed is a display device, which includes a display panel that displays an image, and a controller that receives image data corresponding to a frame and drives the display panel. The controller divides the image data into a plurality of blocks and determines whether the image is a fixed image based on an inter-frame variation of a block of the plurality of blocks. The controller changes an afterimage prevention operation mode when the number of blocks displaying the fixed image for a period equal to or greater than a first reference value among the plurality of blocks is equal to or greater than a second reference value.

公开(公告)号：US20240296789A1

公开(公告)日：2024-09-05

申请号：US18662523

申请日：2024-05-13

Applicant: Samsung Display Co., Ltd.

Inventor： JAEHOON LEE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0278 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A pixel includes: a first transistor including a gate coupled to a first node, a first terminal, and a second terminal coupled to a second node; a first capacitor coupled between the first and second nodes; a second transistor including a gate receiving a first signal, a first terminal coupled to a data line, and a second terminal coupled to the first node; a third transistor including a gate receiving a second signal, a first terminal receiving a reference voltage, and a second terminal coupled to the first node; a fourth transistor including a gate receiving a third signal, a first terminal coupled to the second node, and a second terminal receiving an initialization voltage; a light emitting element including an anode; and a fifth transistor including a gate receiving a fourth signal, a first terminal coupled to the second node, and a second terminal coupled to the anode.

公开(公告)号：US20230135235A1

公开(公告)日：2023-05-04

申请号：US18045570

申请日：2022-10-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAEHOON LEE ,  DAE-SEOP KIM ,  CHEOLMIN KIM ,  BYUNG KI CHUN

IPC: G09G3/3275

Abstract: A display device may compensate for such changes in characteristics of light emitting elements and transistors in pixels of a display. For example, a driving circuit of a display device may update a lookup table that stores one or more compensation values. Each compensation value may correspond to a characteristic change of a pixel. In some embodiments, the characteristic change of a transistor may be determined based on a sensing signal received from a dummy pixel. Accordingly, a display device may generate a compensation signal based on an actual characteristic change of the transistor in the pixel. The compensation signal may be used by the display device to compensate for pixel characteristic changes that occur over time. For instance, a display device may use such compensation signals to correct input signals (e.g., to generate a corrected output signal) to be applied to one or more pixels of a display.