公开(公告)号：US11705057B2

公开(公告)日：2023-07-18

申请号：US17536560

申请日：2021-11-29

Applicant: Samsung Display Co., Ltd.

Inventor： Keunwoo Kim ,  Meejae Kang ,  Hanbit Kim ,  Do Kyeong Lee ,  Jaehwan Chu

IPC: G09G3/32 ,  H10K59/121 ,  H01L27/12 ,  H01L29/786

CPC classification number: G09G3/32 ,  H10K59/1213 ,  H10K59/1216 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2320/0257 ,  G09G2330/021 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255 ,  H01L29/7869 ,  H01L29/78648 ,  H01L29/78675

Abstract: A pixel includes a light emitting element, a driving switching element and a first compensation switching element and a second compensation switching element. The driving switching element is which applies a driving current to the light emitting element. The first compensation switching element and the second compensation switching element are connected between a control electrode of the driving switching element and an output electrode of the driving switching element. The first compensation switching element and the second compensation switching element are connected to each other in series. The driving switching element is a P-type transistor. The first compensation switching element is an N-type transistor. The second compensation switching element is a P-type transistor.

公开(公告)号：US11600229B2

公开(公告)日：2023-03-07

申请号：US17684227

申请日：2022-03-01

Applicant: Samsung Display Co., Ltd.

Inventor： Hanbit Kim ,  Meejae Kang ,  Keunwoo Kim ,  Doo-Na Kim ,  Sangsub Kim ,  Dokyeong Lee ,  Jaehwan Chu

IPC: G09G3/3233

Abstract: A pixel includes a first capacitor connected between a first electrode and a second electrode connected to a first node, a first transistor including a gate electrode connected to the first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor including a gate electrode that receives a data write gate signal, a first electrode that receives a data voltage, and a second electrode connected to the second node, a third transistor connected between the first node and the third node, a fourth transistor connected between the first node and an initialization voltage input terminal to which an initialization voltage is applied, an eighth transistor t connected to the third transistor and the fourth transistor, and an organic light emitting diode including an anode and a cathode receiving a second power supply voltage.