公开(公告)号：US20230389405A1

公开(公告)日：2023-11-30

申请号：US18108627

申请日：2023-02-12

Applicant: Samsung Display Co., Ltd.

Inventor： HOI-LIM KIM ,  SANGHEE YU ,  GYUBONG KIM ,  SEHUN KIM ,  JUYON LEE ,  SUN-GYU JUNG ,  HYUNG UK CHO

IPC: H10K71/40 ,  H10K59/35

CPC classification number: H10K71/421 ,  H10K59/353

Abstract: A method for manufacturing a light emitting device includes: providing a base layer and forming an electron transport layer including first and second transport regions. The forming of the electron transport layer includes: applying an electron transport composition including a metal oxide and a photoacid generator such that first and second preliminary transport regions are formed, and irradiating the first and second preliminary transport regions with light, and in the irradiating with the light, the amount of light per unit area irradiated on the first preliminary transport region is different from the amount of light per unit area irradiated on the second preliminary transport region.

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.