公开(公告)号：US09966048B2

公开(公告)日：2018-05-08

申请号：US14660648

申请日：2015-03-17

Applicant: Samsung Display Co., Ltd.

Inventor： Yun Mi Kim ,  Ki Hyun Pyun ,  Sung Jun Kim ,  Min Young Park ,  Jeong Doo Lee ,  Kyung Hwa Lim

IPC: G09G5/395 ,  G11C7/16 ,  G11C16/08 ,  G11C16/10 ,  G09G3/36 ,  G09G5/12 ,  G09G5/393 ,  G11C16/26

CPC classification number: G09G5/395 ,  G09G3/3648 ,  G09G5/12 ,  G09G5/393 ,  G09G2330/021 ,  G09G2360/12 ,  G11C7/16 ,  G11C16/08 ,  G11C16/10 ,  G11C16/26 ,  H03M1/66

Abstract: A memory is provided, which comprises an electrically erasable and programmable read only memory (EEPROM) configured to store an operation system and to be rewritable in response to a write operation signal, an address comparator configured to be connected to Inter Integrated Circuit (I2C) lines and output the write operation signal to the EEPROM in response to an external signal, a digital-to-analog converter (DAC) unit configured to determine whether to connect a DAC resistor and the I2C lines in response to the external signal and a pull-up resistor unit configured to be connected to the I2C lines.

公开(公告)号：US09812090B2

公开(公告)日：2017-11-07

申请号：US15044571

申请日：2016-02-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Woon Yong Lim ,  Ki Hyun Pyun

IPC: G06F3/038 ,  G09G5/00 ,  G09G5/18 ,  G09G3/20

CPC classification number: G09G5/18 ,  G09G3/20 ,  G09G5/008 ,  G09G2310/0294 ,  G09G2330/06

Abstract: A display device includes a display unit including a light emitting device, data and gate driver for respectively applying data and gate voltages to the display unit, and a signal controller for transmitting, to the data driver, image data having a clock embedded therein. The data driver recovers a first internal reference clock during a low period of a first frame control signal, using the image data having the clock embedded therein, compares the frequency of the recovered first internal reference clock with the frequency of a previously stored reference clock, when the frequency of the recovered first internal reference clock is within an error range of the frequency of the previously stored reference clock, outputs the recovered first internal reference clock and receives a second frame control signal, and when the second frame control signal corresponds to a CDR unit operating condition, recovers a second internal reference clock.

公开(公告)号：US11978403B2

公开(公告)日：2024-05-07

申请号：US18113602

申请日：2023-02-23

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Jin Won Lee

IPC: G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3266 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2360/14

Abstract: A display device for performing a sensing operation according to an embodiment of the present inventive concept includes a pixel unit including pixel circuits each including a light emitting element, a driving transistor, a switching transistor, and a sensing control transistor connected between an anode electrode and an initialization power source; a scan driver connected to the pixel circuits through horizontal lines and sequentially outputting scan signals and sensing control signals; and a sensing unit configured to sense voltages or current of first nodes each disposed between an anode electrode and a driving transistor. The scan driver simultaneously outputs the sensing control signals to the horizontal lines at every predetermined discharge cycle.

公开(公告)号：US11942016B2

公开(公告)日：2024-03-26

申请号：US17666391

申请日：2022-02-07

Applicant: Samsung Display Co., Ltd.

Inventor： Hee Sook Park ,  Ki Hyun Pyun

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/027 ,  G09G2320/0271

Abstract: A display device includes: a gain provider configured to set a time point elapsed by a set period from a time point at which a first region of an input image is detected as a still region, as a set time, and to gradually decrease a gain value from the set time; and a grayscale converter configured to generate an output image by applying the gain value to the first region and a second region including a peripheral region of the first region among the input image, wherein the gain provider is configured to set the set period differently according to size of grayscale values in the first region.

公开(公告)号：US11875740B2

公开(公告)日：2024-01-16

申请号：US17566407

申请日：2021-12-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Hee Sook Park

IPC: G09G3/3233 ,  G09G3/00 ,  H10K50/115

CPC classification number: G09G3/3233 ,  G09G3/006 ,  H10K50/115 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2330/12 ,  G09G2340/045

Abstract: A display device includes a display panel including a plurality of pixels and partitioned into a plurality of blocks including at least one of the pixels, a timing controller configured to receive input image data from an outside source and generate scaled image data by scaling the input image data using a scale factor, a data driver configured to generate a data signal corresponding to the scaled image data and supply the data signal to the pixels, and a logic circuit configured to generate the scale factor based on the input image data, first weight data, and second weight data different from the first weight data.

公开(公告)号：US11514860B2

公开(公告)日：2022-11-29

申请号：US17318289

申请日：2021-05-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Jang Hoon Kwak ,  Won Jin Seo

IPC: G09G3/3266

Abstract: A display device includes a display panel including scan lines, first signal lines connected to the scan lines in a first pixel block, second signal lines connected to the scan lines in a second pixel block, third signal lines connected to the scan lines in a third pixel block; a first scan driver supplying a first output signal to the first signal lines based on a first sub-clock signal; a second scan driver supplying a second output signal to the second signal lines based on a second sub-clock signal; a third scan driver supplying a third output signal to the third signal lines based on and a third sub-clock signal; and a timing controller. Changes in pulse widths of the first to third output signals are different in one frame period.

公开(公告)号：US11514849B2

公开(公告)日：2022-11-29

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: G09G3/30 ,  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：US11482164B2

公开(公告)日：2022-10-25

申请号：US17459554

申请日：2021-08-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eun Jin Choi ,  Won Jin Seo ,  Ki Hyun Pyun

IPC: G09G3/32

Abstract: A display device includes a pixel unit including pixels, a compensator which generate compensation image data by scaling grayscale values of input image data based on temperature data corresponding to an ambient temperature of the pixel unit, a timing controller which generates image data based on the compensation image data, and a data driver which generates a data signal corresponding to the image data and supply the data signal to the pixels. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data decrease when the ambient temperature is greater than a reference temperature. The compensator scales the grayscale values of the input image data in a way such that the grayscale values of the input image data increase when the ambient temperature is less than the reference temperature.

公开(公告)号：US20220319368A1

公开(公告)日：2022-10-06

申请号：US17544057

申请日：2021-12-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Jang Hoon Kwak

IPC: G09G3/00 ,  G09G3/32

Abstract: A display device may include first pixels configured to emit light in a first color, second pixels configured to emit light in a second color different from the first color, a data driver configured to supply first reference voltages to data lines coupled to the first pixels, and a sensing circuit configured to receive first sensing voltages from sensing lines coupled to the first pixels, wherein the data driver supplies second reference voltages different from the first reference voltages to data lines coupled to the second pixels, and the sensing circuit receives second sensing voltages from sensing lines coupled to the second pixels.

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.