公开(公告)号：US20240257727A1

公开(公告)日：2024-08-01

申请号：US18609900

申请日：2024-03-19

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2096 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A source driver includes a digital-to-analog converter that converts signals corresponding to first and second colors included in digital image data into first and second analog color data voltages, respectively, an output buffer unit including a first output buffer that alternately outputs the first color data voltage and the second color data voltage during one horizontal period, and a controller that controls the digital-to-analog converter and the first output buffer to alternately output the first color data voltage and the second color data voltage corresponding to each horizontal period for each horizontal period. The controller controls the first output buffer such that the second color data voltage is output after the first color data voltage is first output during a first horizontal period, and the first color data voltage is output after the second color data voltage is first output during a subsequent second horizontal period.

公开(公告)号：US20240105108A1

公开(公告)日：2024-03-28

申请号：US18303396

申请日：2023-04-19

Applicant: SAMSUNG DISPLAY CO., LTD.

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

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2096 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A source driver includes a digital-to-analog converter that converts signals corresponding to first and second colors included in digital image data into first and second analog color data voltages, respectively, an output buffer unit including a first output buffer that alternately outputs the first color data voltage and the second color data voltage during one horizontal period, and a controller that controls the digital-to-analog converter and the first output buffer to alternately output the first color data voltage and the second color data voltage corresponding to each horizontal period for each horizontal period. The controller controls the first output buffer such that the second color data voltage is output after the first color data voltage is first output during a first horizontal period, and the first color data voltage is output after the second color data voltage is first output during a subsequent second horizontal period.

公开(公告)号：US20220383809A1

公开(公告)日：2022-12-01

申请号：US17882919

申请日：2022-08-08

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3225 ,  H01L27/32 ,  G09G3/3233

Abstract: A pixel of an organic light emitting diode display device includes a capacitor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a ninth transistor and an organic light emitting diode. The third transistor includes first and second sub-transistors which are coupled to each other in series between a drain of the first transistor and a gate node, and a fourth transistor includes third and fourth sub-transistors which are coupled to each other in series between a line of an initialization voltage and the gate node. The eighth transistor applies a reference voltage to a first node between the first and second sub-transistors in response to an emission signal, and a ninth transistor applies the reference voltage to a second node between the third and fourth sub-transistors in response to the emission signal.

公开(公告)号：US20220068209A1

公开(公告)日：2022-03-03

申请号：US17524649

申请日：2021-11-11

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：US20210335275A1

公开(公告)日：2021-10-28

申请号：US17171428

申请日：2021-02-09

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3275

Abstract: A display device includes a display panel including a plurality of pixels, a data driver which provides data signals to the plurality of pixels, and a controller which controls the data driver. The controller writes frame data to a frame memory, reads the frame data in each of a plurality of frame periods, performs in a first frame period of the plurality of frame periods a still image detection operation that determines whether the frame data represent a still image, and does not performs the still image detection operation in a second frame period of the plurality of frame periods subsequent to the first frame period.

公开(公告)号：US20240312413A1

公开(公告)日：2024-09-19

申请号：US18673661

申请日：2024-05-24

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：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：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.