公开(公告)号：US11967284B2

公开(公告)日：2024-04-23

申请号：US17257265

申请日：2019-06-21

Applicant: Samsung Display Co., LTD.

Inventor： Hyo-Jin Lee ,  Sehyuk Park

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/3291 ,  G09G2300/0819 ,  G09G2320/0247 ,  G09G2330/028

Abstract: A display device includes a display panel and a display panel driver. The display panel includes a pixel having a switching element of a first type and a switching element of a second type different from the first type. The display panel driver drives the display panel. In a first mode, the display panel driver drives the switching element of the first type and the switching element of the second type with a high driving frequency. In a second mode, the display panel driver drives the switching element of the first type with the high driving frequency and the switching element of the second type with low driving frequency which is lower than the high driving frequency. In a third mode, the display panel driver drives the switching element of the first type and the switching element of the second type with the low driving frequency.

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：US11869446B2

公开(公告)日：2024-01-09

申请号：US17273340

申请日：2019-06-28

Applicant: Samsung Display Co., LTD.

Inventor： Sehyuk Park ,  Hyo-Jin Lee

IPC: G09G3/3291 ,  H10K59/121

CPC classification number: G09G3/3291 ,  H10K59/1213 ,  H10K59/1216 ,  G09G2310/0272

Abstract: A display device includes a display panel including a pixel including switching elements of a first type and a second type different from the first type, a gate driver for generating a gate signal based on a gate clock signal and providing the gate signal to the display panel, a data driver for providing data voltage to the display panel, an emission controller for providing an emission controlling signal to the display panel, and a driving controller for generating control signals for controlling the gate and data drivers, and the emission controller. In a low-frequency driving mode, the display panel operates in a writing frame for writing data in the pixel and in a holding frame for holding the data written in the pixel, and the driving controller provides the gate driver with a gate clock signal having a direct current (DC) voltage during the holding frame.

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：US11749211B2

公开(公告)日：2023-09-05

申请号：US17935562

申请日：2022-09-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sehyuk Park ,  Hyojin Lee ,  Hui Nam ,  Jinyoung Roh ,  Bong Hyun You ,  Eunho Lee

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2330/028 ,  G09G2370/08

Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.

公开(公告)号：US11620952B2

公开(公告)日：2023-04-04

申请号：US17587325

申请日：2022-01-28

Applicant: Samsung Display Co., Ltd.

Inventor： HongSoo Kim ,  Sangan Kwon ,  Jinyoung Roh ,  Sehyuk Park ,  Sukhun Lee ,  Hyojin Lee

IPC: G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel displays an image based on input image data. The gate driver outputs a gate signal to a gate line of the display panel. The data driver outputs a data voltage to a data line of the display panel. The driving controller controls operations of the gate driver and the data driver and drive a still image display area and a video image display area of a display area of the display panel in different driving frequencies. The driving controller includes a still image determiner which divides the input image data into a plurality of still image determining blocks, respectively determines whether the still image determining blocks represent a still image or a video image and determines a boundary between the still image display area and the video image display area.

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.

公开(公告)号：US11514855B2

公开(公告)日：2022-11-29

申请号：US17219729

申请日：2021-03-31

Applicant: Samsung Display Co., Ltd.

Inventor： Jaekeun Lim ,  Hongsoo Kim ,  Jinyoung Roh ,  Sehyuk Park ,  Hyojin Lee

IPC: G09G3/3258

Abstract: A display device includes a pixel, wherein the pixel includes a light emitting element, a first transistor connected to a first power line and the light emitting element and controlled by a voltage of a first node, a second transistor connected to a data line and the first transistor and controlled by an i-th scan signal, a third-first transistor connected to the first transistor and a second node and controlled by a first control signal, a third transistor connected to the second node and the first node and controlled by a second control signal, and a dummy transistor including a first electrode receiving a reference voltage, a second electrode connected to the second node, and a control electrode connected to an emission line.

公开(公告)号：US11468815B2

公开(公告)日：2022-10-11

申请号：US17548960

申请日：2021-12-13

Applicant: Samsung Display Co., Ltd.

Inventor： Sehyuk Park ,  Hongsoo Kim ,  Jaekeun Lim ,  Jinyoung Roh ,  Hyojin Lee

IPC: G09G3/20

Abstract: A display device includes a display panel including a first display region and a second display region surrounding the first display region, where a first pixel having a first size is disposed in the first display region, and a second pixel having a second size is disposed in the second display region, a gate driver which applies a gate signal to a gate line, a data driver which applies a data voltage to a data line, and a timing controller which controls the gate driver and the data driver. The gate line includes a first gate line connected to both the first pixel and the second pixel, and a second gate line connected only to the second pixel. The data line includes a first data line which does not transmit the data voltage to the second pixel connected to the second gate line, and a second data line which transmits the data voltage to the second pixel connected to the second gate line.