公开(公告)号：US20220028334A1

公开(公告)日：2022-01-27

申请号：US17244095

申请日：2021-04-29

Applicant: Samsung Display Co., Ltd.

Inventor： SEHYUK PARK ,  HONGSOO KIM ,  JINYOUNG ROH ,  HYOJIN LEE ,  JAEKEUN LIM

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283

Abstract: A display device includes a display panel which defines first and second display areas, and includes pixels connected to data lines and scan lines, respectively, a data driving circuit which drives the data lines, a scan driving circuit which drives the scan lines, and a driving controller which receives an image signal and a control signal, control the data and scan driving circuits according to an operation mode, and output clock signals. In a multi-frequency mode, the scan driving circuit includes a first scan driving circuit corresponding to the first display area and a second scan driving circuit corresponding to the second display area. The second scan driving circuit sequentially drives first scan lines among scan lines corresponding to the second display area during a first frame, and sequentially drives second scan lines among scan lines corresponding to the second display area during a second frame.

公开(公告)号：US20220020328A1

公开(公告)日：2022-01-20

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：US20200243008A1

公开(公告)日：2020-07-30

申请号：US16739875

申请日：2020-01-10

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYOJIN LEE ,  EUNHO LEE ,  JINYOUNG ROH ,  SEHYUK PARK ,  BONG HYUN YOU

IPC: G09G3/3233 ,  H01L29/786 ,  G09G3/3258

Abstract: A display apparatus includes a display panel displaying an image based on input image data, a driving controller determining a low frequency driving mode and a normal driving mode based on the input image data, a gate driver outputting a gate signal, a data driver outputting a data voltage, and a power voltage generator outputting power voltages. The driving controller is configured to generate a writing frame in which data is written in a pixel of the display panel and a holding frame in which the written data is maintained without writing data in the pixel in the low frequency driving mode. The driving controller is configured to operate at least one of the driving controller, the data driver, and the power voltage generator in a power reducing mode during the holding frame.