公开(公告)号：US20230419881A1

公开(公告)日：2023-12-28

申请号：US18133998

申请日：2023-04-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun PYUN ,  Won Jin SEO

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/027 ,  G09G2320/041

Abstract: A display device of the disclosure includes a grayscale converter which converts input grayscales into output grayscales based on a scale factor, a data driver which converts the output grayscales into data voltages, a plurality of pixels which receives the data voltages and displays an image based on the data voltages, and a current sensor which provides a sensing current by sensing a first power current supplied to the plurality of pixels to display the image. When a load corresponding to the input grayscales is greater than a minimum load, the grayscale converter adjusts a change amount of the scale factor based on a current difference between a target current corresponding to the load and the sensing current.

公开(公告)号：US20230386414A1

公开(公告)日：2023-11-30

申请号：US18364072

申请日：2023-08-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun PYUN ,  Jung Eon AN

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2360/147

Abstract: A display device includes a sensor, a timing controller, and a data driver. The sensor senses characteristic values of an element included in a pixel of the display device using input initialization and data voltages in a sensing period of one frame period. The timing controller calculates compensation data voltage using the characteristic values, and calculate adjusted initialization and data voltages in the sensing period by using the compensation data voltage. The data driver output the adjusted initialization and data voltages to the pixel during the sensing period in response to a control signal output from the timing controller.

公开(公告)号：US20230052687A1

公开(公告)日：2023-02-16

申请号：US17978057

申请日：2022-10-31

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun PYUN ,  Eun Jin CHOI

IPC: G09G5/10

Abstract: A display device comprises a display area including a plurality of pixels, a peak driving determination part determining peak driving based on an input image signal, a normal driving compensation part including a first luminance lookup table having a first luminance as a peak luminance, a peak driving compensation part including a second luminance lookup table having a second luminance higher than the first luminance as a peak luminance, a compensation adjusting part that generates a peak driving gamma curve by smoothing a first and second luminance gamma curves corresponding to the first and second luminance lookup tables and generates a peak driving lookup table according to the peak driving gamma curve, and a signal controller generating an image data signal by applying one normal driving lookup table to a portion of the display area and applying the peak driving lookup table to an other portion of the display area.

公开(公告)号：US20220301508A1

公开(公告)日：2022-09-22

申请号：US17545992

申请日：2021-12-08

Applicant: Samsung Display Co., LTD.

Inventor： Geon Hwi PARK ,  Jung Eon AN ,  Ki Hyun PYUN

IPC: G09G3/3291 ,  G09G3/3266

Abstract: A gamma measurement method of a display device includes: storing a current value that is measured during gamma tuning of a display panel; resetting a target current of global current management (GCM) by referring to the current value; and measuring gamma of the display panel while applying the target current of the GCM.

公开(公告)号：US20220157232A1

公开(公告)日：2022-05-19

申请号：US17665990

申请日：2022-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun PYUN ,  Myoung Seop SONG ,  Myung Ho LEE

IPC: G09G3/32

Abstract: A display device and a driving method thereof are disclosed, and the display device includes a first pixel connected to a first data line, a first scan line, and a first power source line, emitting light in a first period, and not emitting light in a second period following the first period; a second pixel connected to a second data line, the first scan line, and the first power source line, not emitting light in the first period, and emitting light in the second period; a current sensor sensing a current flowing through the first power source line in the first period to provide a first sensing current value, and sensing the current flowing through the first power source line in the second period to provide a second sensing current value; and a memory storing a first block target current value corresponding to the first sensing current value and a second block target current value corresponding to the second sensing current value.

公开(公告)号：US20220108650A1

公开(公告)日：2022-04-07

申请号：US17341290

申请日：2021-06-07

Applicant: Samsung Display Co., Ltd.

Inventor： Geon Hwi PARK ,  Young Woon CHOI ,  Ki Hyun PYUN

IPC: G09G3/32

Abstract: A display device may include a pixel set, a timing controller, a data driver, and a scale factor provider. The pixel set that may include pixels. The pixels may be divided into pixel groups. The timing controller may calculate first load values corresponding to an image frame of input image data and may generate image data by scaling gradation values of the input image data using scale factors. The data driver may generate data signals corresponding to the image data and may supply the data signals to the pixel set. The scale factor provider may calculate the first load values and one or more second load values based on temperature data corresponding to a temperature of the pixel set and may generate the scale factors based on the one or more second load values and a common current value of a current received by the pixels.

公开(公告)号：US20220076636A1

公开(公告)日：2022-03-10

申请号：US17343808

申请日：2021-06-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young Soo SOHN ,  Ki Hyun PYUN ,  Jae Hyoung PARK ,  Kwan Young OH ,  Seung Young CHOI

IPC: G09G3/3275 ,  G09G3/3266

Abstract: A display device of the present invention includes a pixel unit including a plurality of pixels connected to data lines and scan lines; a data driver disposed on one side of the pixel unit to drive the data lines; a scan driver disposed on the one side of the pixel unit together with the data driver to drive the scan lines; and a controller which controls an output timing of a data signal in units of pixel columns and units of pixel rows based on a load of a scan signal supplied to the scan lines and a load of the data signal supplied to the data lines.

公开(公告)号：US20210304701A1

公开(公告)日：2021-09-30

申请号：US17079281

申请日：2020-10-23

Applicant: Samsung Display Co., Ltd.

Inventor： Eun Jin CHOI ,  Won Jin SEO ,  Ki Hyun PYUN

IPC: G09G5/10

Abstract: Provided herein may be a display device. The display device may include a display panel including a plurality of unit blocks disposed in a display area, the plurality of unit blocks including a first area displaying a logo or a banner, a second area having largest load value and a third area disposed between the first area and the second area, a display panel driver configured to generate data voltages based on input image data, and a zonal compensator configured to receive the input image data, to calculate load values of the input image data for the plurality of unit blocks, respectively, and to control luminance of each of the first area and the third area based on a location difference between the first area and the second area and a load value difference between the first area and the second area.

公开(公告)号：US20210256914A1

公开(公告)日：2021-08-19

申请号：US16993197

申请日：2020-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Hee Sook PARK ,  Ki Hyun PYUN

IPC: G09G3/3291

Abstract: A display device includes a display panel, a display driver, and a timing controller. The data driver may apply a first data voltage set and subsequently a second data voltage set to the display panel during a screen saver operation of the display device. The first data voltage set may cause the display panel to display a first illuminated area. The second data voltage set may cause the display panel to display a second illuminated area. The timing controller may supply image data to the data driver for the second data voltage set to cause the second illuminated area to have a luminance level. The timing controller may determine a value for controlling the luminance level based on a distance between a position of the first illuminated area and a position of the second illuminated area.

公开(公告)号：US20210125563A1

公开(公告)日：2021-04-29

申请号：US16858441

申请日：2020-04-24

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun PYUN ,  Young Soo SOHN

IPC: G09G3/3266 ,  G09G3/3291

Abstract: The display device includes a first pixel connected to a first scan line and a first data line, a second pixel connected to a second scan line and the first data line, a scan driver configured to supply a scan signal to the first scan line and the second scan line, and a data driver connected to the first data line. The data driver provides a first data signal to the first pixel when the scan signal is applied to the first scan line, the data driver provides a second data signal to the second pixel when the scan signal is applied to the second scan line, and a length of a first period in which the first data signal is provided is different from a length of a second period in which the second data signal is provided.