公开(公告)号：US11657767B2

公开(公告)日：2023-05-23

申请号：US17536181

申请日：2021-11-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Sung In Kang ,  Kyun Ho Kim

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/027 ,  G09G2320/0233

Abstract: Provided are a display device and a driving method thereof. The display device includes: a display panel for displaying an image, based on data signals supplied from data lines; a load controller for determining a scale factor for controlling a target luminance of the image displayed in the display panel, based on a load of first image data input from the outside; and a data driver for outputting data signals to the data lines, corresponding to the first image data corrected using the scale factor. The data driver includes a plurality of data driver chips coupled to at least one data line among the data lines. The load controller determines the scale factor, based on at least one of a total load of the first image data and local loads with respect to the respective data driver chips.

公开(公告)号：US11915668B2

公开(公告)日：2024-02-27

申请号：US17739619

申请日：2022-05-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eun Jin Choi ,  Ki Hyun Pyun ,  Sung In Kang

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G5/10 ,  G09G3/2007 ,  G09G2310/027 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/0686 ,  G09G2330/023

Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.

公开(公告)号：US20220262327A1

公开(公告)日：2022-08-18

申请号：US17739619

申请日：2022-05-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eun Jin Choi ,  Ki Hyun Pyun ,  Sung In Kang

IPC: G09G5/10 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.

公开(公告)号：US20210201849A1

公开(公告)日：2021-07-01

申请号：US17016988

申请日：2020-09-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： EUN JIN CHOI ,  Ki Hyun Pyun ,  Sung In Kang

IPC: G09G5/10 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.

公开(公告)号：US11189234B2

公开(公告)日：2021-11-30

申请号：US16834207

申请日：2020-03-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Sung In Kang ,  Kyun Ho Kim

IPC: G09G3/3275

Abstract: Provided are a display device and a driving method thereof. The display device includes: a display panel for displaying an image, based on data signals supplied from data lines; a load controller for determining a scale factor for controlling a target luminance of the image displayed in the display panel, based on a load of first image data input from the outside; and a data driver for outputting data signals to the data lines, corresponding to the first image data corrected using the scale factor. The data driver includes a plurality of data driver chips coupled to at least one data line among the data lines. The load controller determines the scale factor, based on at least one of a total load of the first image data and local loads with respect to the respective data driver chips.

公开(公告)号：US11049474B2

公开(公告)日：2021-06-29

申请号：US16662540

申请日：2019-10-24

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Sung In Kang

IPC: G09G5/10

Abstract: A display device includes: a display including a gate line, a data line, and a pixel electrically coupled to the gate line and the data line; a controller configured to calculate a load of input data; a data driver configured to: generate a data signal corresponding to a grayscale value in the input data; and provide the data signal to the data line; a gate driver configured to: generate a gate signal having a pulse, based on a gate-on voltage; and provide the gate signal to the gate line; and a power supply configured to: provide the gate-on voltage to the gate driver; and vary the gate-on voltage based on the load, wherein the gate-on voltage has a voltage level for turning on the first transistor, and wherein a luminance of the display is increased as the load is increased.

公开(公告)号：US09374861B2

公开(公告)日：2016-06-21

申请号：US14667460

申请日：2015-03-24

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Sung In Kang ,  Woo Jin Lee

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0851 ,  H05B33/0887 ,  Y02B20/347

Abstract: A backlight unit includes: a light source configured to emit light based on a driving current; a sensing resistor configured to generate a sensing voltage based on the driving current; a first comparator configured to compare the sensing voltage to a first reference voltage divided from a reference power to thereby produce a first comparison signal; a first switching element controlled by the first comparison signal applied from the first comparator to thereby switch the sensing voltage; a second comparator configured to compare the sensing voltage applied via the first switching element to a first ramp signal to thereby produce a second comparison signal; a current control switching element configured to control an amount of the driving current based on the reference power and a current control signal applied from a current controller; an abnormality detector configured to convert the second comparison signal applied from the second comparator into a DC voltage and to compare the DC voltage to a critical voltage to thereby generate a third comparison signal; and a cut-off controller configured to compare the third comparison signal applied from the abnormality detector to a cut-off voltage to control the reference power based on the comparison result.

Abstract translation: 背光单元包括：被配置为基于驱动电流发光的光源; 感测电阻器，被配置为基于所述驱动电流产生感测电压; 第一比较器，被配置为将感测电压与从参考功率分开的第一参考电压进行比较，从而产生第一比较信号; 由所述第一比较信号施加的第一比较信号控制的第一开关元件，从而切换感测电压; 第二比较器，被配置为将经由所述第一开关元件施加的感测电压与第一斜坡信号进行比较，从而产生第二比较信号; 电流控制开关元件，被配置为基于所述参考功率和从电流控制器施加的电流控制信号来控制所述驱动电流的量; 异常检测器，被配置为将从第二比较器施加的第二比较信号转换为直流电压，并将直流电压与临界电压进行比较，从而生成第三比较信号; 以及截止控制器，被配置为将从异常检测器施加的第三比较信号与截止电压进行比较，以基于比较结果来控制参考功率。

公开(公告)号：US11341932B2

公开(公告)日：2022-05-24

申请号：US17016988

申请日：2020-09-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eun Jin Choi ,  Ki Hyun Pyun ,  Sung In Kang

IPC: G09G5/10 ,  G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.

公开(公告)号：US11017729B2

公开(公告)日：2021-05-25

申请号：US16731674

申请日：2019-12-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho Kim ,  Sung In Kang ,  Ki Hyun Pyun

IPC: G09G3/32 ,  G09G3/3291 ,  G09G3/20

Abstract: A display device includes: a display panel including a plurality of pixels; a first correction circuit configured to perform, using a gamma correction value, a gamma correction for first image data; a second correction circuit configured to receive the gamma-corrected first image, and to generate second image data by performing gray-scale compensation for the gamma-corrected first image data; and a data driver configured to provide a data signal corresponding to the second image data to the plurality of pixels, wherein the second correction circuit performs the gray-scale compensation based on the gamma correction value and a threshold value measured for each of the plurality of pixels.

公开(公告)号：US09984641B2

公开(公告)日：2018-05-29

申请号：US15158471

申请日：2016-05-18

Applicant: Samsung Display Co., Ltd.

Inventor： Sung In Kang ,  Kyun Ho Kim ,  Min Ho Park ,  Ji Eun Jang

IPC: G09G3/20 ,  G09G3/36 ,  G09G3/3266

CPC classification number: G09G3/3677 ,  G09G3/20 ,  G09G3/3266 ,  G09G3/3674 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/0267 ,  G09G2320/0219 ,  G09G2330/04 ,  G09G2330/06 ,  G09G2330/08 ,  G09G2330/12

Abstract: A gate protection circuit includes: a clock signal generator to generate a plurality of gate clock signals; a gate driver to output gate signals based on the plurality of gate clock signals, the gate driver including a plurality of gate driving circuits cascaded to each other; and a monitoring line configured to transmit a feedback signal based on the plurality of gate clock signals via the plurality of gate driving circuits to the clock signal generator. The clock signal generator is to block generation of the plurality of gate clock signals in response to the feedback signal.