公开(公告)号：US20250084305A1

公开(公告)日：2025-03-13

申请号：US18273977

申请日：2021-01-28

Applicant: SHARP KABUSHIKI KAISHA ,  TOPPAN INC.

Inventor： TADASHI KOBASHI ,  HIROHISA YAMADA ,  TAKAHIRO DOE ,  Keisuke KITANO ,  Masaki YAMAMOTO ,  Yuko OGURA ,  Masanori TANAKA ,  Mikihiro TAKASAKI ,  Yuka TAKAMIZUMA ,  Soichiro NIKATA ,  Tetsuji ITO ,  Mayuko WATANABE

IPC: C09K11/08 ,  H10K50/115 ,  H10K50/16

Abstract: A QD is a Cd-free quantum dot including a core and a shell and configured to emit blue light. The core at least contains Zn and Se. The shell has a film thickness in a range from 0.5 nm to 3 nm, contains Zn, Se, and S in a boundary portion adjacent to the core, and contains Zn and S in an outermost portion.

公开(公告)号：US20240365576A1

公开(公告)日：2024-10-31

申请号：US18768915

申请日：2024-07-10

Applicant: TOPPAN INC.

Inventor： Akiharu MIYANAGA ,  Tetsuji ITO ,  Mayuko WATANABE

IPC: H10K50/115 ,  H01L27/12 ,  H01L29/24 ,  H01L29/786 ,  H10K59/121 ,  H10K77/10 ,  H10K102/00

CPC classification number: H10K50/115 ,  H10K59/1213 ,  H10K77/111 ,  H01L27/1225 ,  H01L29/24 ,  H01L29/7869 ,  H10K2102/3026 ,  H10K2102/311

Abstract: Provided is a display device containing quantum dots. A display device includes a display area. The display area has a light emitting device in which a first electrode, a layer between the first electrode and an emitting layer, the emitting layer, a layer between the emitting layer and a second electrode, and the second electrode are stacked in this order on a substrate. The emitting layer is formed of an inorganic layer containing quantum dots, and the light emitting device is a top emission device. A thin film transistor connected to the light emitting device is preferably an n-ch TFT.