公开(公告)号：US20220149312A1

公开(公告)日：2022-05-12

申请号：US17374517

申请日：2021-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： SEOKJAE LEE ,  YUNJAE KIM ,  JUNGKYUN KIM ,  HYUNGU KIM ,  BOHUN PARK ,  JIN WOO PARK ,  JUNGJIN YANG ,  BUM SUK LEE ,  SUNHYE LEE ,  JAEJIN LEE

IPC: H01L51/52 ,  H01L51/50

Abstract: A light-emitting element may include a first electrode, a second electrode facing the first electrode, a first hole transport layer disposed above the first electrode, a first electron transport layer disposed between the first hole transport layer and the second electrode. A first light-emitting part and a second light-emitting part that emit different light may be disposed between the first hole transport layer and the first electron transport layer. The first light-emitting part may include a first blue emission layer, a second electron transport layer, a charge generation layer, and a second blue emission layer, and the first blue emission layer may be disposed above the first hole transport layer. At least one of the first electron transport layer and the second electron transport layer may be directly disposed above at least one of the first blue emission layer and the second blue emission layer.

公开(公告)号：US20230345819A1

公开(公告)日：2023-10-26

申请号：US18116083

申请日：2023-03-01

Applicant: Samsung Display Co., Ltd.

Inventor： BOHUN PARK ,  HYUNGU KIM ,  JAEJIN LEE ,  SEULONG KIM ,  SEOKJAE LEE ,  JIN WOO PARK

IPC: H10K85/60 ,  H10K85/40 ,  H10K50/15 ,  H10K50/17

CPC classification number: H10K85/633 ,  H10K85/6574 ,  H10K85/6572 ,  H10K85/636 ,  H10K85/40 ,  H10K50/15 ,  H10K50/17 ,  H10K2102/301

Abstract: Embodiments provide a display device that includes first, second, and third light emitting regions, and first, second, and third light emitting elements. The first, second, and third light emitting regions are spaced apart in a plan view. The first, second, and third light emitting elements respectively correspond to the first, second, and third light emitting regions. Each of the first, second, and third light emitting elements includes a first electrode, a second electrode, a first light emitting unit, a second light emitting unit, and a charge generation layer that includes a p-type charge generation layer and an n-type charge generation layer, wherein the p-type charge generation layer includes first, second, and third p-type charge generation layers.

公开(公告)号：US20220123061A1

公开(公告)日：2022-04-21

申请号：US17358593

申请日：2021-06-25

Applicant: Samsung Display Co., Ltd.

Inventor： SEOKJAE LEE ,  YUNJAE KIM ,  JUNGKYUN KIM ,  HYUNGU KIM ,  BOHUN PARK ,  JIN WOO PARK ,  JUNGJIN YANG ,  BUM SUK LEE ,  SUNHYE LEE ,  JAEJIN LEE

IPC: H01L27/32 ,  H01L51/52

Abstract: A display device includes a substrate in which first and second pixel areas respectively emitting first and second light respectively having different emission wavelengths from each other are defined, a first electrode on the substrate to overlap the first and second pixel areas, a hole transport region on the first electrode to overlap the first and second pixel areas, first and second organic layers on the hole transport region to respectively overlap the first and second pixel areas, an electron transport region on the first and second organic layers to overlap the first and second pixel areas, and a second electrode on the electron transport region to overlap the first and second pixel areas. The first organic layer includes first emission layers emitting the first light and a first charge generation layer between the first emission layers, and the second organic layer includes a single second emission layer emitting the second light.