公开(公告)号：US11367379B1

公开(公告)日：2022-06-21

申请号：US17409865

申请日：2021-08-24

Applicant: Samsung Display Co., Ltd.

Inventor： Se Hyuk Park ,  Jae Keun Lim ,  Hong Soo Kim ,  Jin Young Roh ,  Hyo Jin Lee

IPC: G09G3/20

Abstract: A display device according to an embodiment of the disclosure includes a timing controller, a scan driver including a plurality of stages connected to a plurality of clock signal lines and generating a plurality of scan signals in response to the scan start signal, a data driver configured to generate a plurality of data signals based on the image data, and a pixel portion including a plurality of pixels. One stage in the scan driver transmits a carry signal to 2n-th next stage. The timing controller selects any one of a normal frequency and low frequencies lower than the normal frequency as a driving frequency based on the input image data, and adjusts a clock duty of the plurality of clock signals so that a time required to output all of the plurality of scan signals during one frame is constant irrespective of the driving frequency.

公开(公告)号：US11244633B2

公开(公告)日：2022-02-08

申请号：US16920322

申请日：2020-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Sangan Kwon ,  HongSoo Kim ,  Jinyoung Roh ,  Hyo Jin Lee

IPC: G09G3/3291

Abstract: A method of driving a display panel includes dividing an input image into a plurality of segments, generating a flicker value of a segment of the plurality of segments, determining whether to compensate the flicker value of the segment or not according to a segment size, compensating the flicker value of the segment based on the segment size, determining a frame rate of the display panel based on the flicker value of the segment and outputting a data voltage to the display panel in the frame rate. The flicker value of the segment is compensated based on the flicker value of the segment and flicker values of segments that are adjacent to the segment.

公开(公告)号：US11087665B2

公开(公告)日：2021-08-10

申请号：US16923355

申请日：2020-07-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jinyoung Roh ,  HongSoo Kim ,  Sangan Kwon ,  Sehyuk Park ,  Hyo Jin Lee

IPC: G09G3/20

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel including a gate line and a data line displays an image based on input image data. The gate driver outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The driving controller includes an area divider dividing the input image data into first and second area data, a first variable frequency driver determining a first driving frequency of the first area data based on a flicker value according to a grayscale value and generating a first data signal of the first driving frequency and a second variable frequency driver determining a second driving frequency of the second area data based on a flicker value according to a grayscale value and generating a second data signal of the second driving frequency.

公开(公告)号：US20200234632A1

公开(公告)日：2020-07-23

申请号：US16841239

申请日：2020-04-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyo Jin Lee ,  Se Hyuk Park

IPC: G09G3/32

Abstract: A pixel includes: a first transistor configured to generate a driving current corresponding to a data signal transmitted from a corresponding data line; a first light emitting diode (LED) including a cathode connected to a first power supply line and an anode connected to a second power supply line, and configured to emit light by the driving current; a second light emitting diode (LED) including a cathode connected to the second power supply line and an anode connected to the first power supply line, and configured to emit light by the driving current; a second transistor connected to the anode of the first light emitting diode (LED), and configured to transmit the driving current to the first light emitting diode (LED); and a third transistor connected to the anode of the second light emitting diode (LED), and configured to transmit the driving current to the second light emitting diode (LED.

公开(公告)号：US20190051242A1

公开(公告)日：2019-02-14

申请号：US15870707

申请日：2018-01-12

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin Lee ,  Se Hyuk Park

IPC: G09G3/3241

Abstract: A pixel includes: a first transistor configured generate a driving current corresponding to a data signal transmitted from a corresponding data line; a first light emitting diode (LED) including a cathode connected to a first power supply line and an anode connected to a second power supply line, and configured to emit light by the driving current; a second light emitting diode (LED) including a cathode connected to the second power supply line and an anode connected to the first power supply line, and configured to emit light by the driving current; a second transistor connected to the anode of the first light emitting diode (LED), and configured to transmit the driving current to the first light emitting diode (LED); and a third transistor connected to the anode of the second light emitting diode (LED), and configured to transmit the driving current to the second light emitting diode (LED.

公开(公告)号：US11887523B2

公开(公告)日：2024-01-30

申请号：US16844887

申请日：2020-04-09

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hyo Jin Lee ,  Sangan Kwon ,  Jinyoung Roh

IPC: G09G3/20 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/2007 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2320/0247

Abstract: A display apparatus includes: a display panel configured to display an image based on input image data; a gate driver configured to output a gate signal to the display panel; a data driver configured to output a data voltage to the display panel; and a driving controller configured to control an operation of the gate driver and an operation of the data driver, to determine a driving mode of the display apparatus to one of a normal driving mode and a low frequency driving mode based on the input image data, and to determine a driving frequency of the display panel based on the input image data, wherein the driving controller is configured to determine the driving frequency of the display panel using a flicker value varied according to a grayscale value of the input image data and a luminance setting value.

公开(公告)号：US11817030B2

公开(公告)日：2023-11-14

申请号：US17940414

申请日：2022-09-08

Applicant: Samsung Display Co., Ltd.

Inventor： Suk Hun Lee ,  Sangan Kwon ,  Hong Soo Kim ,  Jin Young Roh ,  Sehyuk Park ,  Hyo Jin Lee

IPC: G09G3/20

CPC classification number: G09G3/2007 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0606 ,  G09G2320/08 ,  G09G2320/10 ,  G09G2360/144

Abstract: A display apparatus includes a display panel displaying an image based on an input image data, a data driver outputting a data voltage to a data line, and a driving controller determining a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage configured to store flicker values for grayscale values corresponding to the input image data, a voltage drop determiner configured to adjust a flicker value of the flicker values based on a voltage drop of the display panel, a still image determiner configured to determine whether the input image data is a still image or a video image, and a driving frequency determiner configured to determine the driving frequency of the display panel using the flicker value based on the input image data being the still image.

公开(公告)号：US11631355B2

公开(公告)日：2023-04-18

申请号：US17521066

申请日：2021-11-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Hyuk Park ,  Jin Young Roh ,  Hyo Jin Lee ,  Jae Keun Lim

IPC: G09G3/20

Abstract: A display system includes: a host processor which outputs first image data and outputs scan frequency information and a partial scan enable signal, based on an image driving frequency; a display module controlled by the host processor; and an interface. The display module includes: a display driving circuit which controls a selection of pixel rows to which the data signals are supplied based on the scan frequency information and the partial scan enable signal; and a display panel which displays an image on selected pixel rows based on the data signals. In a video mode of the interface, the host processor divides and outputs the first image data through the interface during transmission periods, based on the image driving frequency, and suspends an output of the first image data through the interface during suspend periods.

公开(公告)号：US11615749B2

公开(公告)日：2023-03-28

申请号：US17379929

申请日：2021-07-19

Applicant: Samsung Display Co., Ltd.

Inventor： Hui Nam ,  Hyo Jin Lee ,  Jinyoung Roh ,  Sehyuk Park

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and an emission driver. The display panel includes a pixel. The gate driver outputs a data write gate signal having a corresponding active level and a data initialization gate signal having a corresponding active level to the pixel in a writing frame, outputs the data write gate signal not having the corresponding active level and the data initialization gate signal not having the corresponding active level to the pixel in a holding frame and outputs the data write gate signal having the corresponding active level and the data initialization gate signal not having the corresponding active level to the pixel in a writing compensation frame. The data driver outputs a data voltage to the pixel. The emission driver outputs an emission signal to the pixel.

公开(公告)号：US11545067B2

公开(公告)日：2023-01-03

申请号：US17520907

申请日：2021-11-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyo Jin Lee ,  Jae Keun Lim ,  Hong Soo Kim ,  Jinyoung Roh ,  Sehyuk Park

IPC: G09G3/20

Abstract: A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.