公开(公告)号：US20240147761A1

公开(公告)日：2024-05-02

申请号：US18263362

申请日：2022-01-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yuichi YANAGISAWA ,  Shinya SASAGAWA ,  Shiro NISHIZAKI ,  Ryota HODO

IPC: H10K59/12 ,  H10K59/124 ,  H10K59/32 ,  H10K71/10 ,  H10K71/20 ,  H10K71/60 ,  H10K85/10

CPC classification number: H10K59/1201 ,  H10K59/124 ,  H10K59/32 ,  H10K71/10 ,  H10K71/231 ,  H10K71/60 ,  H10K85/10

Abstract: A method for manufacturing a display apparatus with high display quality is provided. The method is for manufacturing a display apparatus including first to third insulators, first and second conductors, and a first EL layer. The first conductor is formed over the first insulator, and the second insulator is formed over the first insulator and over the first conductor. Next, a first opening portion reaching the first conductor is formed in a region of the second insulator overlapping with the first conductor. A positive photoresist is applied to regions over the first and second insulators and over the first conductor, and a second opening portion with an inversely tapered structure reaching the first conductor and the second insulator is formed in a region of the photoresist overlapping with the first opening portion and the first conductor. The first EL layer, the second conductor, and the third insulator are sequentially formed on a bottom portion of the second opening portion of the photoresist and over the photoresist, and then, the photoresist and the first EL layer, the second conductor, and the third insulator formed over the photoresist are removed.

公开(公告)号：US20240057451A1

公开(公告)日：2024-02-15

申请号：US18259135

申请日：2021-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yuichi YANAGISAWA ,  Ryota HODO ,  Shiro NISHIZAKI ,  Hiromi SAWAI

IPC: H10K59/80 ,  H10K59/124 ,  H10K59/12

CPC classification number: H10K59/873 ,  H10K59/124 ,  H10K59/1201

Abstract: A high-resolution display device and a manufacturing method thereof are provided. The display device includes a first insulating layer, a first light-emitting element and a second light-emitting element over the first insulating layer, a third insulating layer located to be over and cover the first light-emitting element, and a fifth insulating layer located to be over and cover the second light-emitting element. The first light-emitting element and the second light-emitting element emit light of different colors. A first groove and a second groove are provided in a region that is in the first insulating layer and between the first light-emitting element and the second light-emitting element. Part of the third insulating layer is embedded in the first groove, and part of the fifth insulating layer is embedded in the second groove.