公开(公告)号：US10707448B2

公开(公告)日：2020-07-07

申请号：US16525461

申请日：2019-07-29

Applicant: LG Display Co., Ltd.

Inventor： JiYoung Kim ,  SeUng Kim ,  JungSoo Park

IPC: H01L51/52 ,  H01L51/50 ,  H01L27/32

Abstract: An organic light-emitting diode includes a first electrode, a first light-emitting unit (EL unit) disposed on the first electrode and including a first organic light-emitting layer, a first charge generating layer on the first EL unit, a second EL unit disposed on the first charge generating layer and including a second organic light-emitting layer, a third organic light-emitting layer and a fourth organic light-emitting layer, a second charge generating layer on the second EL unit, a third EL unit disposed on the second charge generating layer and including a fifth organic light-emitting layer, and a second electrode on the third EL unit. A dopant concentration of the third organic light-emitting layer is greater than a dopant concentration of the fourth organic light-emitting layer. An organic light emitting display device can include the organic light-emitting diode.

公开(公告)号：US10418593B2

公开(公告)日：2019-09-17

申请号：US16022081

申请日：2018-06-28

Applicant: LG Display Co., Ltd.

Inventor： JiYoung Kim ,  SeUng Kim ,  JungSoo Park

IPC: H01L51/52 ,  H01L51/50 ,  H01L27/32

Abstract: An organic light-emitting diode includes a first electrode, a first light-emitting unit (EL unit) disposed on the first electrode and including a first organic light-emitting layer, a first charge generating layer on the first EL unit, a second EL unit disposed on the first charge generating layer and including a second organic light-emitting layer, a third organic light-emitting layer and a fourth organic light-emitting layer, a second charge generating layer on the second EL unit, a third EL unit disposed on the second charge generating layer and including a fifth organic light-emitting layer, and a second electrode on the third EL unit. A dopant concentration of the third organic light-emitting layer is greater than a dopant concentration of the fourth organic light-emitting layer. An organic light emitting display device can include the organic light-emitting diode.

公开(公告)号：US10050238B2

公开(公告)日：2018-08-14

申请号：US15814194

申请日：2017-11-15

Applicant: LG DISPLAY CO., LTD.

Inventor： Gwijeong Cho ,  ChangWook Han ,  Taeil Kum ,  Taeshick Kim ,  Heedong Choi ,  JiYoung Kim ,  Mingyu Lee ,  Taeseok Lim

IPC: H01L51/52 ,  H01L51/50 ,  H01L27/32

Abstract: An organic light emitting display device can include a first electrode on a substrate; a first emission part on the first electrode, the first emission part including a first emission layer; a second emission part on the first emission part, the second emission part including a second emission layer; a third emission part on the second emission part, the third emission part including a third emission layer; and a second electrode on the third emission part, in which a first thickness between the substrate and the first emission layer, a second thickness between the first emission layer and the second emission layer, a third thickness between the second emission layer and the third emission layer, and a fourth thickness between the third emission layer and the second electrode are different from each other, and the first, second emission, and third emission parts include at least one organic layer.

公开(公告)号：US09847513B2

公开(公告)日：2017-12-19

申请号：US14960918

申请日：2015-12-07

Applicant: LG DISPLAY CO., LTD.

Inventor： Gwijeong Cho ,  ChangWook Han ,  Taeil Kum ,  Taeshick Kim ,  Heedong Choi ,  JiYoung Kim ,  Mingyu Lee ,  TaeSeok Lim

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/5278 ,  H01L27/3206 ,  H01L27/3209 ,  H01L27/3244 ,  H01L51/5044 ,  H01L2251/558

Abstract: Discussed is an organic light emitting display device. The organic light emitting display device according to an embodiment includes a first electrode and a second electrode on a substrate to be opposite to each other and at least three emission parts between the first electrode and the second electrode. A first distance between the substrate and the first emission layer, a second distance between the first emission layer and the second emission layer, a third distance between the second emission layer and the third emission layer, and a fourth distance between the third emission layer and the second electrode are different from each other.

公开(公告)号：US10290826B2

公开(公告)日：2019-05-14

申请号：US15169269

申请日：2016-05-31

Applicant: LG DISPLAY CO., LTD.

Inventor： JiYoung Kim ,  Jaeil Song ,  Younseok Kam ,  Taeshick Kim

IPC: H01L51/50 ,  H01L51/52 ,  H01L27/32

Abstract: Discussed is an organic light emitting display device. The organic light emitting display device according to an embodiment includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer, a first emission layer, and a first electron transport layer, and the second emission part includes a second hole transport layer, a second emission layer, and a second electron transport layer. The second emission layer includes at least two zones including a hole-type host and an electron-type host, and a zone among the at least two zones closer to the first electrode than the second electrode, a ratio of the mixed host to the electron-type host is higher than a ratio of the mixed host to the hole-type host in the zone.