公开(公告)号：US20210090502A1

公开(公告)日：2021-03-25

申请号：US17028384

申请日：2020-09-22

Applicant: Samsung Display Co., LTD.

Inventor： Jung-Mi CHOI ,  Young-In HWANG ,  Eung Taek KIM ,  Yong Ho YANG ,  Joo Hyeon JO ,  Seong Baik CHU

IPC: G09G3/3258

Abstract: Provided are a pixel circuit and a display device having the pixel circuit. The pixel circuit includes an organic light emitting diode, a switching transistor, a storage capacitor, and a driving transistor. The switching transistor is turned off when a scan signal has a first voltage and turned on when the scan signal has a second voltage. The storage capacitor stores a data voltage when the switching transistor is turned on in response to the scan signal. The driving transistor is electrically connected with the organic light emitting diode between a high power supply voltage and a low power supply voltage to provide a driving current to the organic light emitting diode, and includes a first bottom gate electrode that is provided with the first voltage. The driving current corresponds to the data voltage stored in the storage capacitor.

公开(公告)号：US20160247453A1

公开(公告)日：2016-08-25

申请号：US15146292

申请日：2016-05-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young-In HWANG

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/00

CPC classification number: G09G3/3258 ,  G09G3/003 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0469 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0866 ,  G09G2310/0202 ,  G09G2310/0216 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/063 ,  G09G2310/08 ,  G09G2320/0252 ,  G09G2330/00 ,  H04N13/315 ,  H04N13/341 ,  H04N13/398

Abstract: A pixel circuit includes an organic light emitting diode, a first PMOS transistor coupled between a first power voltage and an anode electrode of the organic light emitting diode, a second PMOS transistor coupled between a first node and the anode electrode of the organic light emitting diode, a first capacitor coupled between a second node and the first node, a second capacitor coupled between the first power voltage and the second node, a third PMOS transistor coupled between a data line and the second node, a fourth PMOS transistor coupled between a third node and the second node, a third capacitor coupled between the third node and a gate terminal of the third PMOS transistor, and a fifth PMOS transistor coupled between the data line and the third node.

Abstract translation: 像素电路包括有机发光二极管，耦合在有机发光二极管的第一电源电压和阳极电极之间的第一PMOS晶体管，耦合在有机发光二极管的第一节点和阳极之间的第二PMOS晶体管 ，耦合在第二节点和第一节点之间的第一电容器，耦合在第一电源电压和第二节点之间的第二电容器，耦合在数据线和第二节点之间的第三PMOS晶体管，耦合在第三电容器 节点和第二节点，耦合在第三节点和第三PMOS晶体管的栅极端子之间的第三电容器，以及耦合在数据线和第三节点之间的第五PMOS晶体管。