公开(公告)号：US20230274686A1

公开(公告)日：2023-08-31

申请号：US18079607

申请日：2022-12-12

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  JANG-MI LEE

IPC: G09G3/20 ,  G01R19/165

CPC classification number: G09G3/2096 ,  G01R19/16571 ,  G09G3/2007 ,  G09G2330/021 ,  G09G2300/0828

Abstract: A display device may include a display panel which displays an image based on image data, a power supply which provides a driving voltage to the display panel through a power line, a current sensor which generates first current data including average, minimum, and maximum sensing currents of a first period based on sensing currents generated by sampling a current flowing through the power line at a sampling frequency, generates second current data including average, minimum, and maximum sensing currents of a second period less than the first period based on the sensing currents, and includes a first controller controlling the image data or the power supply based on the second current data, and a timing controller which communicates with the current sensor, and includes a second controller controlling the image data or the power supply based on the first and second current data.

公开(公告)号：US20230260459A1

公开(公告)日：2023-08-17

申请号：US17985563

申请日：2022-11-11

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  HYUNJOO SEO ,  SEUNG-WOON SHIN

IPC: G09G3/3258 ,  G09G3/00 ,  G09G3/32 ,  G09G3/20

CPC classification number: G09G3/3258 ,  G09G3/006 ,  G09G3/32 ,  G09G3/2011 ,  G09G2330/025 ,  G09G2330/045 ,  G09G2310/08

Abstract: A display device includes a display panel including a pixel which receives a driving voltage through a first voltage line, a voltage generator which provides the driving voltage which has a first voltage level to the first voltage line and determines a voltage level of the driving voltage based on a voltage control signal, a current sensor which senses a current level of the first voltage line and outputs a current signal corresponding to the sensed current level, and an overcurrent controller which outputs the voltage control signal which changes the voltage level of the driving voltage when a difference value between present and previous current levels of the current signal is a reference value or greater. The voltage level of the driving voltage changes to a second voltage level lower than the first voltage level when the difference value is the reference value or greater.

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：US20220327976A1

公开(公告)日：2022-10-13

申请号：US17539650

申请日：2021-12-01

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  WONJIN SEO

IPC: G09G3/20

Abstract: A display apparatus may count a number of frames and adjust a cycle of clock training operations depending on a frame count number in a data-sensing driver to prevent or reduce unnecessary clock training operations. The data-sensing driver may perform more sensing operations by increasing the number of sensing operations and reducing the number of clock training operations. As a result, the data-sensing driver can quickly sense deterioration of a display panel of the display apparatus, and prevent or reduce a momentary afterimage, thereby improving a display quality.

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.

公开(公告)号：US20220261049A1

公开(公告)日：2022-08-18

申请号：US17454512

申请日：2021-11-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYOSEOK YUN ,  TAEGON KIM ,  MYOUNGSEOP SONG ,  JONGMIN SHIM ,  JANG-MI LEE ,  KIHYUN PYUN

IPC: G06F1/18 ,  G09G3/20

Abstract: A circuit board assembly includes a main board and a connection board attached to the main board. The connection board includes a base board including a connecting pad area and a mounting area, wherein the connection board is attached to the main board in the connecting pad area, and wherein the mounting area is spaced apart from the connecting pad area in a first direction and includes a driving chip mounted thereon. The connection board further includes first connection pads disposed on the connecting pad area of the base board, and second connection pads disposed on the connecting pad area of the base board. The main board includes first main pads connected to the first connection pads in a one-to-one connection and a second main pad connected to the second connection pads in a many-to-one connection.

公开(公告)号：US20220148507A1

公开(公告)日：2022-05-12

申请号：US17579429

申请日：2022-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SIDUK SUNG

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

Abstract: A display device includes a switch, an initialization line, a capacitor, a data line, a first transistor, a second transistor, a driving transistor, and a diode. The capacitor includes a first electrode and a second electrode. To the first electrode through at least the initialization line, the switch may output a first voltage in a first period of a horizontal time and may output a second voltage unequal to the first voltage in a second period of the horizontal time. The first transistor may connect the data line to the first electrode in response to a scan signal. The driving transistor may provide a driving current based on a voltage of the first electrode. The second transistor may connect the initialization line to the second electrode in response to an initialization signal. The diode may emit light based on the driving current.

公开(公告)号：US20220076621A1

公开(公告)日：2022-03-10

申请号：US17335501

申请日：2021-06-01

Applicant: Samsung Display Co., Ltd.

Inventor： WONJIN SEO ,  EUNJIN CHOI ,  KIHYUN PYUN

IPC: G09G3/3208 ,  H01L27/32

Abstract: An electronic device includes a display panel which includes a plurality of light emitting elements and in which a plurality of areas is defined based on the plurality of light emitting elements, a compensation unit which calculates compensation values for image data provided to each of the plurality of areas, and a control unit which controls the output of the image data provided to the display panel based on the compensation values and the image data, where the control unit may include a correction unit which outputs a correction ratio of each of the plurality of areas based on the compensation values and a comparison unit which determines whether an input current of the image data is in a normal range based on the correction ratio.

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.