公开(公告)号：US20250072203A1

公开(公告)日：2025-02-27

申请号：US18616884

申请日：2024-03-26

Applicant: Samsung Display Co., Ltd.

Inventor： JONGWON LEE ,  PILGU KANG ,  SEUNG CHEOL KIM ,  CHANG-MIN LEE ,  HAKCHOONG LEE ,  WONSUK HAN ,  JAEHOON HWANG

IPC: H10K50/13 ,  H10K59/38

Abstract: A light emitting element includes a first electrode, a first light emitting stack disposed on the first electrode, a second light emitting stack disposed on the first light emitting stack, a third light emitting stack disposed on the second light emitting stack, a fourth light emitting stack disposed on the third light emitting stack, a fifth light emitting stack disposed on the fourth light emitting stack, a second electrode disposed on the fifth light emitting stack, and charge generation layers disposed between adjacent ones of the first light emitting stack to the fifth light emitting stack. Each of the first light emitting stack to the fifth light emitting stack includes at least one emission layer, and the first light emitting stack to the fifth light emitting stack include at least two blue emission layers, at least one green emission layer, and at least one red emission layer.

公开(公告)号：US20230016588A1

公开(公告)日：2023-01-19

申请号：US17704679

申请日：2022-03-25

Applicant: Samsung Display Co., Ltd.

Inventor： HEUNGSU PARK ,  SONGEUN LEE ,  NAMSU KANG ,  JONGWON LEE ,  HYUNSHIK LEE

IPC: H01L51/00

Abstract: A light-emitting device including a first electrode, a hole transport region disposed on the first electrode, a first light-emitting layer disposed on the hole transport region and emitting light of a first wavelength, a second light-emitting layer disposed on the hole transport region and emitting light of a second wavelength different from the first wavelength, an electron transport region disposed on the first light-emitting layer and the second light-emitting layer, and a second electrode disposed on the electron transport region, wherein the second light-emitting layer includes a first sub light-emitting layer including a first host and a first dopant and emitting the light of the second wavelength, and a second sub light-emitting layer including a second host different from the first host and a second dopant and emitting the light of the second wavelength. Accordingly, a luminous efficiency and device lifetime of the light-emitting device may be improved.

公开(公告)号：US20230157148A1

公开(公告)日：2023-05-18

申请号：US17881373

申请日：2022-08-04

Applicant: Samsung Display Co., Ltd.

Inventor： SEULONG KIM ,  EUNGYOUNG PARK ,  HAJIN SONG ,  JONGWON LEE ,  JAEHOON HWANG

IPC: H01L51/00 ,  C07F1/02 ,  C09K11/06

CPC classification number: H01L51/0077 ,  C07F1/02 ,  C09K11/06 ,  H01L51/5076

Abstract: A light emitting device including a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region is provided. The electron transport region includes a polycyclic compound represented by Formula 1:

公开(公告)号：US20250072202A1

公开(公告)日：2025-02-27

申请号：US18630147

申请日：2024-04-09

Applicant: Samsung Display Co., Ltd.

Inventor： JONGWON LEE ,  SEUNG CHEOL KIM ,  CHANG-MIN LEE ,  HAKCHOONG LEE ,  JAEHOON HWANG

IPC: H10K50/13 ,  H10K50/115 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K59/35

Abstract: A light emitting element includes a first electrode, a second electrode facing the first electrode, and a plurality of light emitting structures stacked between the first electrode and the second electrode, each of the plurality of light emitting structures including a hole transport region, a light emitting layer, and an electron transport region. At least one of the light emitting structures is a green light emitting structure which emits green light, and the light emitting layer of the green light emitting structure includes a first sub-light emitting layer including a low refractive material having a refractive index value less than or equal to about 1.7 at 460 nm, and a second sub-light emitting layer not including the low refractive material, and disposed on the first sub-light emitting layer, so that the light emitting element may exhibit high light emission efficiency.

公开(公告)号：US20230389402A1

公开(公告)日：2023-11-30

申请号：US18296481

申请日：2023-04-06

Applicant: Samsung Display Co., LTD.

Inventor： JONGWON LEE ,  SEUNG CHEOL KIM ,  Heung Su PARK ,  Chang-Min LEE ,  Hyun Shik LEE

IPC: H10K59/80 ,  H10K59/35

CPC classification number: H10K59/879 ,  H10K59/35 ,  H10K59/873

Abstract: A display device includes a light emitting device disposed on a substrate, a capping layer disposed on the light emitting device, and an encapsulation layer disposed on the capping layer. The capping layer includes a first surface facing the encapsulation layer, the first surface of the capping layer includes a protrusion protruding toward the encapsulation layer, and a height of the protrusion is greater than or equal to about 600 angstroms in a cross-sectional view.

公开(公告)号：US20230209861A1

公开(公告)日：2023-06-29

申请号：US17822633

申请日：2022-08-26

Applicant: Samsung Display Co., Ltd.

Inventor： JONGWON LEE ,  DAEHYEON KIM ,  SEUNG CHEOL KIM ,  HEUNGSU PARK ,  CHANG-MIN LEE ,  HYUNSHIK LEE

IPC: H01L51/50 ,  H01L27/32

CPC classification number: H01L51/5092 ,  H01L27/3246 ,  H01L51/504 ,  H01L27/322 ,  H01L2251/301 ,  H01L2251/558

Abstract: Provided is a light emitting device including a first electrode, a hole transport region on the first electrode, a first light emitting layer on the hole transport region and configured to emit light of a first wavelength, a second light emitting layer on the hole transport region and configured to emit light of a second wavelength different from the first wavelength, an electron transport region including an electron transport layer on the first light emitting layer and the second light emitting layer, and an electron injection layer on the electron transport layer, and a second electrode on the electron transport region, wherein the electron injection layer includes magnesium (Mg) and ytterbium (Yb).