公开(公告)号：US20240049495A1

公开(公告)日：2024-02-08

申请号：US18358858

申请日：2023-07-25

Applicant: LG Display Co., Ltd.

Inventor： Jeongeun WON ,  SeungRyong JOUNG ,  Chunki KIM ,  Yosub LEE

IPC: H10K50/13 ,  H10K50/15

CPC classification number: H10K50/13 ,  H10K50/156 ,  H10K59/12

Abstract: A display apparatus according to an example embodiment of the present disclosure includes a cathode electrode over a substrate, a first emission part over the cathode electrode, the first emission part including a first electron transport layer, a first emission layer, a first hole transport layer, and a first charge generation layer, a second emission part over the first emission part, the second emission part including a second charge generation layer, a second electron transport layer, a second emission layer, a second hole transport layer, and a third charge generation layer, a third emission part over the second emission part, the third emission part including a fourth charge generation layer, a third electron transport layer, a third emission layer, and a third hole transport layer, and an anode electrode over the third emission part. A thickness of the third electron transport layer may be larger than a thickness of the second electron transport layer.

公开(公告)号：US20170155070A1

公开(公告)日：2017-06-01

申请号：US15163462

申请日：2016-05-24

Applicant: LG DISPLAY CO., LTD.

Inventor： Yoondeok HAN ,  Hongseok CHOI ,  SoYeon AHN ,  JungSoo PARK ,  Yosub LEE

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

CPC classification number: H01L51/504 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/3209 ,  H01L27/3246 ,  H01L27/3248 ,  H01L27/3258 ,  H01L27/3262 ,  H01L27/3276 ,  H01L51/5004 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5278 ,  H01L2251/5384 ,  H01L2251/552

Abstract: An organic light emitting display device includes: a first light emitting unit including a first light emitting layer; and a second light emitting unit on the first light emitting unit including a second light emitting layer. The first light emitting layer includes at least one dopant and at least two hosts. The at least two hosts are different from each other in electron mobility and hole mobility.