公开(公告)号：US20200160780A1

公开(公告)日：2020-05-21

申请号：US16578848

申请日：2019-09-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jiwoong KIM ,  Ohjo KWON

IPC: G09G3/325 ,  G09G3/3291

Abstract: A pixel circuit includes first to fifth transistors, an organic light emitting element, and a capacitor. The second transistor includes a control electrode receiving a first scan signal, an input electrode receiving a data voltage, and an output electrode connected to the control electrode of the first transistor. The third transistor includes a control electrode receiving a second scan signal, an input electrode receiving an initialization voltage, and an output electrode connected to the output electrode of the first transistor. The fourth transistor includes a control electrode receiving an emission signal, an input electrode receiving a first power voltage, and an output electrode connected to the input electrode of the first transistor. The fifth transistor includes a control electrode receiving a third scan signal, an input electrode receiving the data voltage, and an output electrode connected to the input electrode of the first transistor.

公开(公告)号：US20200090590A1

公开(公告)日：2020-03-19

申请号：US16402169

申请日：2019-05-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jeon Kyoo KIM ,  Oh Jo KWON ,  Jiwoong KIM ,  JunYong SONG ,  Dong Won LEE ,  Jae Keun LIM

IPC: G09G3/3258 ,  G09G3/3266

Abstract: A display device includes data lines, scan lines, and pixels. Each of the pixels includes an organic light emitting diode, a first transistor (OLED), and a second transistor. The first transistor is electrically connected to an anode of the OLED. The second transistor is electrically connected to the first transistor, a scan line among the scan lines, and a data line among the data lines. The second transistors of the pixels may receive instances of a reference voltage from the data lines during a first period of a frame. The second transistors of the pixels may simultaneously receive instances of a turn-on scan signal from the scan lines during the first period of the frame. Cathodes of the OLEDs of the pixels may receive instances of a turn-off voltage for the OLEDs to turn off during the first period of the frame.