公开(公告)号：US20190148648A1

公开(公告)日：2019-05-16

申请号：US16042794

申请日：2018-07-23

Applicant: Samsung Display Co., Ltd.

Inventor： Changmin LEE ,  Jihye SHIM ,  Yeonwoo LEE ,  Jehong CHOI ,  Hyunju CHOI ,  Sangwoo PYO ,  Myungsuk HAN

IPC: H01L51/00 ,  H01L51/52 ,  H01L27/32 ,  H01L51/50

Abstract: Disclosed are an organic light-emitting diode and an organic light-emititng display device including the same. The organic light-emitting diode includes: a first electrode; a second electrode disposed opposite to the first electrode; and an organic layer interposed between the first electrode and the second layer and including a hole transport region, a light-emitting layer, an electron transport region, and a diffusion barrier layer, wherein the diffusion barrier layer includes one or more diffusion barrier materials including a 6- to 20-membered N-heterocyclic aromatic compound, a lithium complex, and/or a phosphine oxide-based compound.

公开(公告)号：US20190148663A1

公开(公告)日：2019-05-16

申请号：US16040471

申请日：2018-07-19

Applicant: Samsung Display Co., Ltd.

Inventor： Changmin LEE ,  Jihye SHIM ,  Yeonwoo LEE ,  Jehong CHOI ,  Hyunju CHOI ,  Sangwoo PYO ,  Myungsuk HAN

IPC: H01L51/50 ,  H01L51/52 ,  H05B33/10 ,  H01L27/32

Abstract: Disclosed are an organic light-emitting diode and an organic light-emitting display device including the same. The organic light-emitting diode includes: a first electrode; a second electrode disposed opposite to the first electrode; a light-emitting layer disposed between the first electrode and the second electrode; a hole transport region disposed between the first electrode and the light-emitting layer; and an electron transport region disposed between the light-emitting layer and the second electrode; the hole transport region including at least two layers, and one of the at least two layers is in contact with the first electrode and is a self-crystallizing material-containing layer.

公开(公告)号：US20210210711A1

公开(公告)日：2021-07-08

申请号：US17033772

申请日：2020-09-26

Applicant: Samsung Display Co., Ltd.

Inventor： Dongchan KIM ,  Jiyoung MOON ,  Heechang YOON ,  Jihye LEE ,  Hakchoong LEE ,  Haemyeong LEE ,  Yoonhyeung CHO ,  Myungsuk HAN ,  Jihwan YOON ,  Jonghyuk LEE

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/56

Abstract: A light-emitting device includes a first electrode; a second electrode facing the first electrode; m emission units between the first electrode and the second electrode; and m−1 charge-generating unit(s) between adjacent ones of the emission units, where m is a natural number of 2 or more. The emission units each include an emission layer. At least one of the charge-generating unit(s) includes an n-type charge-generating layer and a p-type charge-generating layer; and the n-type charge-generating layer includes a first material and a second material. The first material includes an organic electron transport compound; and the second material includes at least one selected from an alkali metal, an alkali metal alloy, an alkaline earth metal, an alkaline earth metal alloy, a lanthanide metal, and a lanthanide metal alloy. The light-emitting device may have improved hole and electron balance, a decreased driving voltage, and excellent efficiency and/or lifespan characteristics.

公开(公告)号：US20180090719A1

公开(公告)日：2018-03-29

申请号：US15682942

申请日：2017-08-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Myungsuk HAN

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

CPC classification number: H01L51/5278 ,  H01L27/3209 ,  H01L27/3244 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5044 ,  H01L51/5206 ,  H01L51/5221 ,  H01L2251/5384 ,  H01L2251/552 ,  H01L2251/558

Abstract: An organic electroluminescence display device includes a first electrode, a second electrode on the first electrode, and a light-emitting unit between the first electrode and the second electrode, the light-emitting unit including a first sub-light-emitting unit on the first electrode and including a first emission layer, a first charge generation layer on the first sub-light-emitting unit, a second sub-light-emitting unit on the first charge generation layer and including a second emission layer, a second charge generation layer on the second sub-light-emitting unit, and a third sub-light-emitting unit on the second charge generation layer and including a third emission layer, wherein each of the first emission layer and the second emission layer includes a first host, the third emission layer includes a second host different from the first host, and a thickness of the second emission layer is 1.0 nm or less.

公开(公告)号：US20180019286A1

公开(公告)日：2018-01-18

申请号：US15642376

申请日：2017-07-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ilsoo OH ,  Pyungeun JEON ,  Myungsuk HAN

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

CPC classification number: H01L27/3213 ,  H01L27/3209 ,  H01L27/322 ,  H01L51/00 ,  H01L51/5036 ,  H01L51/5072 ,  H01L51/5092 ,  H01L51/5268 ,  H01L51/5271 ,  H01L51/5278

Abstract: An organic electroluminescence display device includes a first electrode, a first light emitter on the first electrode, the first light emitter including a first light emitting layer, a first charge generation layer disposed on the first light emitter, a second light emitter on the first charge generation layer, the second light emitter including a second light emitting layer, and a second electrode on the second light emitter. The first light emitter includes a first electron injection enhancing layer on the first light emitting layer. The second light emitter includes an electron injection suppressing layer on the second light emitting layer, the electron injection suppressing layer having electron mobility less than that of the first electron injection enhancing layer.