公开(公告)号：US20240144875A1

公开(公告)日：2024-05-02

申请号：US18139955

申请日：2023-04-27

Applicant: Samsung Display Co., Ltd.

Inventor： Bon Seog GU ,  Hae Kwan SEO ,  Jin Young ROH ,  Jae Keun LIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2340/0435

Abstract: A display device is disclosed that includes a pixel component configured to output an image based on a first driving frequency, a scan driver configured to sequentially provide a scan signal to each pixel row in each frame based on the first driving frequency, and a driving controller configured control the scan driver such that, in the case where image data includes data corresponding to a static image, a display area is divided into a first area for the static image, and a second area for a video, and the first area is driven at a second driving frequency, and the second area is driven at a third driving frequency. The driving controller may control the scan driver such that a driving frequency corresponding to the first area is reduced to the second driving frequency, and a driving frequency corresponding to the second area is increased to the third driving frequency.

公开(公告)号：US20220036797A1

公开(公告)日：2022-02-03

申请号：US17182825

申请日：2021-02-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Hyuk PARK ,  Hong Soo KIM ,  Jin Young ROH ,  Bong Hyun YOU ,  Hyo Jin LEE ,  Jae Keun LIM

IPC: G09G3/20

Abstract: A display device includes first dots connected to first scan lines, second dots connected to second scan lines and alternately disposed with the first dots in a first direction and a second direction different from the first direction, a scan driver including first stages respectively connected to the first scan lines and second stages respectively connected to the second scan lines, and a data driver connected to the first dots and the second dots through data lines. The first stages are connected to first clock lines, the second stages are connected to second clock lines, first stages except a first start stage are respectively connected to corresponding first scan lines of corresponding previous first stages, and second stages except a second start stage are respectively connected to corresponding second scan lines of corresponding previous second stages.

公开(公告)号：US20210256911A1

公开(公告)日：2021-08-19

申请号：US17307969

申请日：2021-05-04

Applicant: Samsung Display Co., Ltd.

Inventor： Hyo Jin LEE ,  Sangan KWON ,  Jin Young ROH ,  Sehyuk PARK

IPC: G09G3/3258

Abstract: A pixel of a display device includes a capacitor; a light emitting diode; and first, second, third, and fourth transistors. The display device has a normal frequency mode and a low frequency mode. Two electrodes of the capacitor are respectively connected to a first voltage source and a gate node. A gate electrode of the first transistor is connected to the gate node. In a hold period in the low frequency mode, both the second and third transistors receive a scan signal, the third transistor diode-connects the first transistor, the fourth transistor receives an initialization signal and transfers an initialization voltage to the gate node, the scan signal is at a first off voltage level, and the initialization signal is at a second off voltage level unequal to the first off voltage level. The cathode of the light emitting diode is connected to a second voltage source.

公开(公告)号：US20210193048A1

公开(公告)日：2021-06-24

申请号：US17008366

申请日：2020-08-31

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Keun LIM ,  Jin Young ROH ,  Sehyuk PARK ,  Hyo Jin LEE

IPC: G09G3/3266 ,  G09G3/3258 ,  G09G3/3275

Abstract: A scan driver includes: a plurality of first stages configured to sequentially output a plurality of intermediate scan signals based on a scan start signal; a plurality of masking transistors respectively connected to a plurality of output terminals of the plurality of first stages, and configured to selectively transfer the plurality of intermediate scan signals in response to a masking signal, respectively; and a plurality of second stages including a plurality of input terminals respectively connected to the plurality of masking transistors, and configured to selectively output a plurality of scan signals based on the plurality of intermediate scan signals selectively transferred by the plurality of masking transistors.

公开(公告)号：US20210125559A1

公开(公告)日：2021-04-29

申请号：US17014969

申请日：2020-09-08

Applicant: Samsung Display Co., Ltd.

Inventor： Se Hyuk PARK ,  Hong Soo KIM ,  Jin Young ROH ,  Hyo Jin LEE ,  Jae Keun LIM

IPC: G09G3/3258 ,  G09G3/3291 ,  H01L27/32

Abstract: A display apparatus includes a display panel, a first gate driver, a second gate driver, a third gate driver, and a data driver. The display apparatus is operable in a low frequency driving mode, and the low frequency driving mode includes a writing frame and a holding frame. At least one of gate power voltages used to generate a first gate signal, a second gate signal, and an emission signal has a first voltage level in the writing frame of the low frequency driving mode and a second voltage level in the holding frame of the low frequency driving mode. The data voltage is applied to the pixel in the writing frame of the low frequency driving mode. The data voltage applied to the pixel in the writing frame of the low frequency driving mode is maintained in the holding frame of the low frequency driving mode.

公开(公告)号：US20240404478A1

公开(公告)日：2024-12-05

申请号：US18804631

申请日：2024-08-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hae Kwan SEO ,  Jin Young ROH ,  Young Ha SOHN ,  Jin Wook YANG

IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266

Abstract: A display device includes a display panel including a first pixel column in which first and third color pixels are alternately disposed, a second pixel column in which second color pixels are disposed, a third pixel column in which the third and first color pixels are alternately disposed, and a fourth pixel column in which the second color pixels are disposed. The display device further includes a scan driver applying a scan signal to scan lines, a data driver including a first source channel supplying a first color data signal and a second color data signal to a first data line, and a second source channel supplying the second color data signal and a third color data signal to a second data line, and a demultiplexer successively selecting the first and second sub-data lines during a period in which the scan signal is supplied to each scan line.

公开(公告)号：US20240054957A1

公开(公告)日：2024-02-15

申请号：US18382068

申请日：2023-10-20

Applicant: Samsung Display Co., LTD.

Inventor： Se Hyuk PARK ,  Jin Young ROH ,  Woo Mi BAE ,  Hae Kwan SEO ,  Young Ha SOHN ,  Jin Wook YANG

IPC: G09G3/3241 ,  G09G3/20

CPC classification number: G09G3/3241 ,  G09G3/2074 ,  G09G2300/0413 ,  G09G2300/0426

Abstract: A display device includes: a data driver for supplying a data signal to each of a plurality of data lines; and a pixel unit including a plurality of sub-pixels. The pixel unit further includes one dummy data line disposed separate from a data line of a first column among the data lines. The data line of the first column is connected to sub-pixels disposed on odd-numbered pixel rows among sub-pixels disposed on a first pixel column, and is connected to sub-pixels disposed on even-numbered pixel rows among sub-pixels disposed on a third pixel column. The dummy data line is connected to sub-pixels disposed on the even-numbered pixel rows among the sub-pixels disposed on the first pixel column.

公开(公告)号：US20230005409A1

公开(公告)日：2023-01-05

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

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：US20220328013A1

公开(公告)日：2022-10-13

申请号：US17583938

申请日：2022-01-25

Applicant: Samsung Display Co., Ltd.

Inventor： Jin Young ROH ,  Hong Soo KIM ,  Se Hyuk PARK ,  Hyo Jin LEE ,  Jae Keun LIM

IPC: G09G3/3291 ,  G09G3/3266

Abstract: Embodiments of the present disclosure relate to a display device and a driving method thereof, and the display device includes a demultiplexer connected to a first data line and transferring a data signal from the first data line to a plurality of second data lines during a data writing period of one frame, a compensator calculating an on-pixel ratio (OPR) using input data in the one frame and generating compensation data corresponding to a calculated OPR, and a data driver supplying the data signal to the first data line using the input data during the data writing period, and supplying a compensation data signal to the first data line using the compensation data in a blank period of the one frame, and the demultiplexer supplies the compensation data signal from the first data line to a second data line during the blank period.

公开(公告)号：US20220270552A1

公开(公告)日：2022-08-25

申请号：US17283430

申请日：2019-08-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin Young ROH ,  Hui NAM ,  Se Hyuk PARK ,  Hyo Jin LEE

IPC: G09G3/3266

Abstract: A display device includes a display panel including a plurality of pixels each coupled to a write scan line, a compensation scan line, an initialization scan line, a bypass scan line, and a data line; and a scan driver configured to supply i (where i is a natural number) write scan pulses, compensation scan pulses, initialization scan pulses, and bypass scan pulses to the write scan line, the compensation scan line, the initialization scan line, and the bypass scan line, respectively, during a first period corresponding to one frame period, and to supply j (where j is a natural number other than i) write scan pulses to the write scan line during each of frame periods of a second period including a plurality of consecutive frame periods.