公开(公告)号：US20240179937A1

公开(公告)日：2024-05-30

申请号：US18365128

申请日：2023-08-03

Applicant: Samsung Display Co., Ltd.

Inventor： ILHA SONG ,  HYOMIN KO ,  SANG GYUN KIM ,  HYEONGPIL KIM ,  BORA LEE ,  HYEONMI LEE

IPC: H10K50/19 ,  H10K59/122 ,  H10K59/38 ,  H10K59/80

CPC classification number: H10K50/19 ,  H10K59/122 ,  H10K59/38 ,  H10K59/80517 ,  H10K2102/351

Abstract: A display panel includes a circuit layer and a display element layer that includes light emitting elements emitting white light, wherein the light emitting elements each include a first electrode, an optical auxiliary layer on the first electrode, a conductive layer on the optical auxiliary layer, a hole transport region on the conductive layer, a first light emitting layer on the hole transport region and emitting first light, a light emitting auxiliary unit on the first light emitting layer, a second light emitting layer on the light emitting auxiliary unit and generating second light, a third light emitting layer either between the first light emitting layer and the light emitting auxiliary unit or between the light emitting auxiliary unit and the second light emitting layer and generating third light, an electron transport region on the second light emitting layer, and a second electrode on the electron transport region.

公开(公告)号：US20220190274A1

公开(公告)日：2022-06-16

申请号：US17448162

申请日：2021-09-20

Applicant: Samsung Display Co., Ltd.

Inventor： HYEONGPIL KIM ,  BYOUNG-HUN SUNG

IPC: H01L51/50 ,  H01L27/32

Abstract: A display panel includes an upper display substrate in which first to third pixel regions respectively configured to emit first to third light are defined, and a lower display substrate including first to third light-emitting elements respectively overlapping the first to third pixel regions. The first light-emitting element and the second light-emitting element each include one or more first stack parts and one or more first charge generation layers, each of the one or more first stack parts including a first emission layer configured to emit the second light. The third light-emitting element includes one or more second stack parts and one or more second charge generation layers, each of the one or more second stacking parts including a second emission layer configured to emit the third light. The first charge generation layer includes organic dopants, and the second charge generation layer includes inorganic dopants.

公开(公告)号：US20240397740A1

公开(公告)日：2024-11-28

申请号：US18791245

申请日：2024-07-31

Applicant: Samsung Display Co., LTD.

Inventor： HYEONGPIL KIM ,  BYOUNG-HUN SUNG

IPC: H10K50/13 ,  H10K50/165 ,  H10K59/122 ,  H10K59/38

Abstract: A display device includes an upper display substrate including a first pixel region for emitting a first light, a second pixel region for emitting a second light different from the first light, and a third pixel region for emitting a third light different from the first light and the second light; and a lower display substrate including a first light-emitting element overlapping the first pixel region, a second light-emitting element overlapping the second pixel region, and a third light-emitting element overlapping the third pixel region. The second light-emitting element includes one or more first stacks for emitting the second light, the third light-emitting element includes one or more second stacks for emitting the third light, and a concentration of a conductive material included in the one or more first stacks is higher than a concentration of a conductive material included in the one or more second stacks.

公开(公告)号：US20230232649A1

公开(公告)日：2023-07-20

申请号：US17979551

申请日：2022-11-02

Applicant: Samsung Display Co., Ltd.

Inventor： HYEONGPIL KIM ,  BEOMJOON KIM ,  ILHA SONG ,  DAEWOONG LEE ,  BORA LEE ,  ILLHUN CHO

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

CPC classification number: H01L51/504 ,  H01L51/5092 ,  H01L27/3246 ,  H01L51/5218 ,  H01L51/5072 ,  H01L51/5056

Abstract: A display device including a base layer including a first pixel area configured to emit a first light therefrom and a second pixel area configured to emit a second light therefrom, a first electrode on the base layer, a second electrode on the first electrode and facing the first electrode, first light emitting stacks between the first and second electrodes and in the first pixel area, a first charge generation layer between the first light emitting stacks, second light emitting stacks between the first and second electrodes and in the second pixel area, and a second charge generation layer between the second light emitting stacks. The first charge generation layer includes a first metal, the second charge generation layer includes a second metal different from the first metal, and the second metal has a work function equal to or greater than 1.7 eV and equal to or smaller than 3.2 eV.

公开(公告)号：US20220165974A1

公开(公告)日：2022-05-26

申请号：US17489775

申请日：2021-09-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HYEONGPIL KIM ,  Byoung-Hun Sung

IPC: H01L51/50 ,  H01L27/32

Abstract: A display device includes an upper display substrate including a first pixel region for emitting a first light, a second pixel region for emitting a second light different from the first light, and a third pixel region for emitting a third light different from the first light and the second light; and a lower display substrate including a first light-emitting element overlapping the first pixel region, a second light-emitting element overlapping the second pixel region, and a third light-emitting element overlapping the third pixel region. The second light-emitting element includes one or more first stacks for emitting the second light, the third light-emitting element includes one or more second stacks for emitting the third light, and a concentration of a conductive material included in the one or more first stacks is higher than a concentration of a conductive material included in the one or more second stacks.