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：US20230351963A1

公开(公告)日：2023-11-02

申请号：US18124044

申请日：2023-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2096 ,  G09G2300/0842 ,  G09G2330/028 ,  G09G2310/08 ,  G09G2330/025 ,  G09G2330/12 ,  G09G2330/021 ,  G09G2320/0271

Abstract: A display device may include a display panel displaying an image and including pixels, a driving voltage controller including an overcurrent detector generating an alert signal when a driving current of the display panel is greater than a reference current, a load calculator calculating a load of input image data in response to the alert signal and generating a load escape signal when the load is greater than a reference load, a vertical blank counter generating a vertical blank count value by counting a time of a vertical blank period in response to the alert signal and the load escape signal, and generating a counter escape signal when the vertical blank count value is greater than a reference count value, and a driving voltage generator altering a driving voltage provided to the display panel in response to the alert signal and the counter escape signal.

公开(公告)号：US20230326381A1

公开(公告)日：2023-10-12

申请号：US18114241

申请日：2023-02-25

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/00 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/3233 ,  H10K59/131

Abstract: A display device includes: a display panel including first and second wirings; a control circuit board spaced apart from the display panel and including a power management circuit which provides a driving voltage to the first and second wirings; a first cable coupled to the control circuit board and electrically connecting the power management circuit and the first wiring; a second cable coupled to the control circuit board and electrically connecting the power management circuit and the second wiring; an abnormal coupling detector connected between the first and second wirings and generating first and second protection signals based on a difference between a first voltage of the first wiring and a second voltage of the second wiring; and a voltage supply controller counting the first and second protection signals, and providing a shutdown signal to the power management circuit such that the power management circuit stops providing the driving voltage.

公开(公告)号：US20230162651A1

公开(公告)日：2023-05-25

申请号：US17990171

申请日：2022-11-18

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE PARK ,  SEUNGHWAN PARK ,  NAMJAE LIM ,  YOUNGWOON CHOI ,  SUNG-MO YANG ,  JINHO LEE

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/0275 ,  G09G2320/0271

Abstract: A display apparatus includes: a display panel; a driving controller, which receives input image data including a plurality of normal image frames and a plurality of black image frames, receives a flag indicating a type of each of frames included in the input image data, generates intermediate image data by adjusting a grayscale of the input image data based on the input image data and the flag, and generates a data signal based on the intermediate image data where the type includes a normal image frame and a black image frame; and a data driver, which generates a data voltage based on the data signal and outputs the data voltage to the display panel.

公开(公告)号：US20210350737A1

公开(公告)日：2021-11-11

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

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.

公开(公告)号：US20240371326A1

公开(公告)日：2024-11-07

申请号：US18427919

申请日：2024-01-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/3258

Abstract: Disclosed is a display device which includes a display panel including a plurality of pixels, a voltage generator providing a driving voltage to the plurality of pixels, and a driving controller. The driving controller includes an overcurrent protecting circuit. The overcurrent protecting circuit includes a first logic circuit comparing a limit current with a sensing current to generate a first comparison result, a second logic circuit comparing a load with a limit load to generate a second comparison result and comparing the driving voltage with a limit voltage to generate a third comparison result. When the first comparison result indicates the sensing current is greater than or equal to the limit current, the second comparison result indicates the load is greater than the limit load and the third comparison result indicates the driving voltage is greater than the limit voltage, a driving voltage controller maintains the driving voltage.

公开(公告)号：US20230215327A1

公开(公告)日：2023-07-06

申请号：US18120559

申请日：2023-03-13

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2300/0828 ,  G09G2310/0275 ,  G09G2320/0271 ,  G09G2330/04 ,  G09G2330/028

Abstract: A display device may include a display panel which displays an image based on a data voltage, a driving controller including a net power control setter which determines a scale factor for adjusting a gray scale of (N+1)th frame data based on a load of Nth frame data and a net power control reference value, where the driving controller generates a data signal based on input image data, and N is a natural number greater than or equal to 2, a data driver which converts the data signal into the data voltage and outputs the data voltage to the display panel, and a power supply voltage generator which senses a power supply current applied to the display panel in an Nth frame and generates a power supply voltage based on a current level of the power supply current.

公开(公告)号：US20230186831A1

公开(公告)日：2023-06-15

申请号：US17869218

申请日：2022-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG ,  SEUNGHO PARK ,  DAE-SIK LEE

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0271 ,  G09G2330/021 ,  G09G2300/0828

Abstract: A display device includes a display panel which displays an image based on input image data, a driving controller which generates a voltage control signal for adjusting a first power voltage applied to the display panel in an (N+M)-th frame based on a maximum grayscale value of the input image data of an N-th frame, where N is a positive integer, and M is a positive integer, and a power voltage generator which senses a power current applied to the display panel in the (N+M)-th frame, generates a second power voltage based on the voltage control signal, and controls a voltage level of the first power voltage based on the second power voltage and a current level of the power current.

公开(公告)号：US20220309985A1

公开(公告)日：2022-09-29

申请号：US17556163

申请日：2021-12-20

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/20

Abstract: A display device may include a display panel which displays an image based on a data voltage, a driving controller including a net power control setter which determines a scale factor for adjusting a gray scale of (N+1)th frame data based on a load of Nth frame data and a net power control reference value, where the driving controller generates a data signal based on input image data, and N is a natural number greater than or equal to 2, a data driver which converts the data signal into the data voltage and outputs the data voltage to the display panel, and a power supply voltage generator which senses a power supply current applied to the display panel in an Nth frame and generates a power supply voltage based on a current level of the power supply current.