公开(公告)号：US20240237469A9

公开(公告)日：2024-07-11

申请号：US18450862

申请日：2023-08-16

Applicant: Samsung Display Co., LTD.

Inventor： SUN-KYU JOO ,  DAEHYEON KIM ,  Hong Il Kim ,  SANGJI PARK ,  KEUNCHAN OH ,  DOKYUNG YOUN ,  SONGEE LEE ,  CHANG-MIN LEE ,  HYUNSHIK LEE ,  WOO-MAN JI ,  TAE HYUNG HWANG

IPC: H10K59/38 ,  H10K59/12

CPC classification number: H10K59/38 ,  H10K59/12 ,  H10K2102/331

Abstract: A display device includes: a blue color filter layer in a blue transmission region of an upper substrate, and including first scattering particles; a green color filter layer in a green transmission region of the upper substrate, and including second scattering particles; a red color filter layer in a red transmission region of the upper substrate; a partition wall on the upper substrate and defining a blue transmission opening, a green transmission opening, and a red transmission opening, which overlap the blue transmission region, the green transmission region, and the red transmission region, respectively; a color conversion layer including red color conversion particles and third scattering particles, and accommodated in the red transmission opening; a light emitting element layer on a lower substrate facing the upper substrate; and a filling material between the upper substrate and the lower substrate.

公开(公告)号：US20230117065A1

公开(公告)日：2023-04-20

申请号：US17834533

申请日：2022-06-07

Applicant: Samsung Display Co., Ltd.

Inventor： NAMSU KANG ,  HUIJU PARK ,  SONGEUN LEE ,  HYUNSHIK LEE

IPC: H01L51/50 ,  C07D209/82 ,  C07D307/91 ,  C07C15/38 ,  C07D241/42 ,  C07C43/235 ,  C07C321/30 ,  C07D413/14 ,  C07C211/54 ,  C07D401/14 ,  C07D471/04 ,  C07D403/10 ,  C07D491/147 ,  C07D519/00 ,  C07D333/76 ,  C07D403/04 ,  C07D231/56 ,  C07F9/53 ,  H01L51/00

Abstract: A light emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission part disposed between the first electrode and the second electrode and including a first emission layer and a second emission layer disposed on the first emission layer, the first emission layer may include a first host, and a first dopant, and the second emission layer may include a hole transport host different from the first host, an electron transport host, and a second dopant. A first hole mobility of the first host may be in a range of about 5.0×10−6 cm2/Vs to about 1.0×10−3 cm2/Vs, a second hole mobility of a host mixture including the hole transport host and the electron transport host may be in a range of about 1.0×10−6 cm2/Vs to about 1.0×10−4 cm2/Vs, and the first hole mobility may be larger than the second hole mobility.

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).

公开(公告)号：US20240138226A1

公开(公告)日：2024-04-25

申请号：US18450862

申请日：2023-08-15

Applicant: Samsung Display Co., LTD.

Inventor： SUN-KYU JOO ,  DAEHYEON KIM ,  Hong Il Kim ,  SANGJI PARK ,  KEUNCHAN OH ,  DOKYUNG YOUN ,  SONGEE LEE ,  CHANG-MIN LEE ,  HYUNSHIK LEE ,  WOO-MAN JI ,  TAE HYUNG HWANG

IPC: H10K59/38 ,  H10K59/12

CPC classification number: H10K59/38 ,  H10K59/12 ,  H10K2102/331

Abstract: A display device includes: a blue color filter layer in a blue transmission region of an upper substrate, and including first scattering particles; a green color filter layer in a green transmission region of the upper substrate, and including second scattering particles; a red color filter layer in a red transmission region of the upper substrate; a partition wall on the upper substrate and defining a blue transmission opening, a green transmission opening, and a red transmission opening, which overlap the blue transmission region, the green transmission region, and the red transmission region, respectively; a color conversion layer including red color conversion particles and third scattering particles, and accommodated in the red transmission opening; a light emitting element layer on a lower substrate facing the upper substrate; and a filling material between the upper substrate and the lower substrate.

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.