公开(公告)号：US20220149306A1

公开(公告)日：2022-05-12

申请号：US17450827

申请日：2021-10-13

Applicant: Samsung Display Co., Ltd.

Inventor： JAE HONG PARK ,  JAEHOON KIM ,  HYUNMI DOH ,  MYOUNGJIN PARK

IPC: H01L51/50 ,  H01L27/32

Abstract: Provided is a light emitting element and a display device including a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region and including quantum dots, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein at least one selected from the hole transport region and the electron transport region includes an antioxidant, thereby exhibiting increased luminous efficiency.

公开(公告)号：US20230284480A1

公开(公告)日：2023-09-07

申请号：US18067543

申请日：2022-12-16

Applicant: Samsung Display Co., Ltd.

Inventor： MYOUNGJIN PARK ,  JINGOO KANG ,  SEHUN KIM ,  YOUNGIL KIM ,  JUYON LEE

IPC: H10K59/122 ,  H10K50/15 ,  H10K50/16 ,  H10K50/115 ,  H10K50/125 ,  H10K59/38 ,  H10K50/17 ,  H10K85/60 ,  C09K11/67 ,  C09K11/66 ,  C09K11/60 ,  C09K11/57

CPC classification number: H10K59/122 ,  H10K50/15 ,  H10K50/16 ,  H10K50/115 ,  H10K50/125 ,  H10K59/38 ,  H10K50/171 ,  H10K85/60 ,  C09K11/671 ,  C09K11/662 ,  C09K11/605 ,  C09K11/574

Abstract: An electronic device including first to third light emitting regions and a dummy region is provided. The electronic device includes a base layer, and a display element layer including a pixel defining film on the base layer, light emitting elements divided by the pixel defining film, and a reduction preventing layer containing a reduction preventing agent, and the light emitting elements each include an electron transport region containing a metal oxide. The electronic device may have improved electron transport function of the electron transport region by the reduction preventing agent contained in the reduction preventing layer, thereby improving the luminous efficiency.

公开(公告)号：US20190198587A1

公开(公告)日：2019-06-27

申请号：US16139366

申请日：2018-09-24

Applicant: SAMSUNG DISPLAY CO.,LTD.

Inventor： MYOUNGJIN PARK ,  Youngji Kim ,  Youngseo Choi

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50 ,  G09G3/3291 ,  G09G3/3266 ,  H01L51/56

CPC classification number: H01L27/3246 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2310/08 ,  H01L27/3258 ,  H01L51/5012 ,  H01L51/5203 ,  H01L51/5237 ,  H01L51/56

Abstract: A display device includes a substrate that includes a display region and a non-display region that surrounds the display region, a plurality of pixels disposed on the display region of the substrate, a plurality of dam members disposed on the non-display region of the substrate that surround the display region, a first encapsulation layer disposed on the substrate that covers the pixels and the dam members, and a second encapsulation layer disposed on the first encapsulation layer and in a region between the display region and a dam member of the plurality of the dam members that is adjacent to the display region. A surface roughness of a top surface of the second encapsulation layer is greater than a surface roughness of a top surface of the first encapsulation layer.