公开(公告)号：US10861360B2

公开(公告)日：2020-12-08

申请号：US16058225

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim ,  Seokha Hong

IPC: G06F3/038 ,  G09G3/00 ,  G09G3/36

Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.

公开(公告)号：US20190057631A1

公开(公告)日：2019-02-21

申请号：US16058225

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jaehoon Lee ,  Kyoungho Lim ,  Seokha Hong

IPC: G09G3/00 ,  G09G3/36

Abstract: A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.

公开(公告)号：US12243468B2

公开(公告)日：2025-03-04

申请号：US18109995

申请日：2023-02-15

Applicant: Samsung Display Co., Ltd.

Inventor： Heesook Park ,  Kyoungho Lim ,  Daye Moon

IPC: G09G3/20

Abstract: A display device includes a display panel divided into panel blocks including pixels, and a display panel driver which drives the display panel, sets a time point to which a set time elapses from a time point when input image data is determined to be a still image as an operation time point, decreases a luminance gain from the operation time point, determines the set time based on accumulated deterioration amounts of the panel blocks, and applies the luminance gain to the input image data.

公开(公告)号：US12020615B2

公开(公告)日：2024-06-25

申请号：US17569802

申请日：2022-01-06

Applicant: Samsung Display Co., Ltd.

Inventor： Kihyun Pyun ,  Kyoungho Lim

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0857 ,  G09G2330/02 ,  G09G2330/045

Abstract: A display apparatus includes a display panel, a data driver, a driving controller and a power voltage generator. The display panel displays an image. The data driver outputs a data voltage to the display panel. The driving controller controls an operation of the data driver. The power voltage generator outputs a power voltage of the display panel. The data driver outputs a clock recovery signal representing whether a clock recovery operation is normal or abnormal to the driving controller. The driving controller generates an overcurrent signal representing an overcurrent based on the clock recovery signal and outputs the overcurrent signal to the power voltage generator.

公开(公告)号：US11854499B2

公开(公告)日：2023-12-26

申请号：US18088715

申请日：2022-12-26

Applicant: Samsung Display Co., Ltd.

Inventor： Kihyun Pyun ,  Kyoungho Lim

IPC: G09G3/3291 ,  G09G3/32 ,  G09G3/36

CPC classification number: G09G3/3291 ,  G09G3/32 ,  G09G3/3688 ,  G09G2310/027 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2360/16

Abstract: A display device is disclosed that includes a display panel, a controller, and a data driver. The controller is configured to determine first luminances with respect to a reference grayscale in a second frame when the reference grayscale is displayed in the second frame after the reference grayscale is displayed in a first frame. The controller is configured to determine second luminances with respect to the reference grayscale in the second frame when the reference grayscale is displayed in the second frame after a minimum grayscale is displayed in the first frame. The controller is further configured to temporally and spatially arrange first data corresponding to the reference grayscale and second data corresponding to the minimum grayscale to generate a data signal. And, the controller is configured to drive the display panel with a digital driving method in a first grayscale section, and drive the display panel with an analog driving method in a second grayscale section. The data driver is configured to generate a data voltage based on the data signal.

公开(公告)号：US11817031B2

公开(公告)日：2023-11-14

申请号：US17940429

申请日：2022-09-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jinho Lee ,  Sungjae Park ,  Seunghwan Park ,  Youngwoon Choi ,  Seungho Park ,  Kyoungho Lim ,  Namjae Lim

IPC: G09G3/20 ,  G09G3/3225 ,  G09G3/3275 ,  G09G3/36

CPC classification number: G09G3/2044 ,  G09G3/2051 ,  G09G3/2055 ,  G09G3/3225 ,  G09G3/3275 ,  G09G3/3685 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2340/0435 ,  G09G2360/16

Abstract: A display device includes: a display panel including a plurality of pixels connected to a plurality of scan lines and a plurality of data lines, respectively; a scan driver, which provides a scan signal to the pixels through the scan lines; a data driver, which provides a data voltage to the pixels through the data lines; and a controller, which controls the scan driver and the data driver, and receives input image data at a variable input frame frequency. The controller determines whether a gray scale value of the input image data is included in any range of a first gray scale range and a second gray scale range different from the first gray scale range, and dithers the input image data when it is determined that the gray scale value of the input image data is included the first gray scale range.

公开(公告)号：US20220076635A1

公开(公告)日：2022-03-10

申请号：US17326684

申请日：2021-05-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： WONWOO JANG ,  Seungho Park ,  Kyoungho Lim

IPC: G09G3/3275

Abstract: A display device includes a display panel, a controller, and a data driver. The display panel includes a plurality of pixels. The controller detects a logo region including a logo in image data, determines a correction gain based on a first average gray level of the logo region and a second average gray level of a peripheral region adjacent to the logo region, and generates corrected image data by correcting the image data based on the correction gain. The data driver provides data signals to the plurality of pixels based on the corrected image data.

公开(公告)号：US10803812B2

公开(公告)日：2020-10-13

申请号：US16120607

申请日：2018-09-04

Applicant: Samsung Display Co., Ltd.

Inventor： Seokha Hong ,  Nam-gon Choi ,  Moonshik Kang ,  Jaehoon Lee ,  Kyoungho Lim

IPC: G09G3/34 ,  G02F1/13357 ,  G02F1/1335 ,  G09G3/36

Abstract: A display device includes a display panel, a plurality of sensors, a signal control unit, and a backlight unit. A plurality of dimming regions is defined in the display panel. The signal control unit determines a plurality of representative luminance values corresponding to the plurality of dimming regions based on image data signals received from an external device and illuminance values of an external light measured by the plurality of sensors. The backlight unit provides lights having the representative luminance values to the display panel.