公开(公告)号：US20170317156A1

公开(公告)日：2017-11-02

申请号：US15583698

申请日：2017-05-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： DONGSOO KIM ,  Ji-Hyun Ka

IPC: H01L27/32 ,  H01L29/786 ,  H01L27/12

CPC classification number: H01L27/3272 ,  G09G3/3233 ,  G09G2310/0262 ,  G09G2320/045 ,  H01L27/1225 ,  H01L27/3262 ,  H01L27/3276 ,  H01L29/78672 ,  H01L29/7869 ,  H01L2227/323

Abstract: An organic light emitting display (OLED) device includes an organic light emitting diode having an anode and a cathode. The organic light emitting diode is configured to receive a reference voltage. A control transistor includes a first control electrode and a first semiconductor active layer. The control transistor is configured to receive a control signal. A driving transistor includes a second control electrode that is electrically connected to the control transistor, an input electrode that is configured to receive a power voltage, an output electrode that is electrically connected to the anode of the organic light emitting diode, and a second semiconductor active layer that includes a different material from that of the first semiconductor active layer. A shielding electrode is disposed on the second semiconductor active layer, overlapping the driving transistor, and configured to receive the power voltage.