公开(公告)号：US20250098429A1

公开(公告)日：2025-03-20

申请号：US18724014

申请日：2022-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yuichi YANAGISAWA ,  Ryota HODO ,  Hiromi SAWAI ,  Yasunori SASAMURA

IPC: H10K59/122 ,  H10K59/38

Abstract: A high-resolution display device is provided. The display device includes a first light-emitting device, a second light-emitting device, a first insulating layer, a second insulating layer, a first coloring layer, and a second coloring layer. The first light-emitting device includes a first pixel electrode, a first layer, and a common electrode in this order over the first insulating layer. The second light-emitting device includes a second pixel electrode, a second layer, and the common electrode in this order over the first insulating layer. The first insulating layer includes a groove including a region overlapping with the first pixel electrode and a region overlapping with the second pixel electrode. The second insulating layer overlaps with a side surface of the first layer, a side surface of the second layer, and the groove. The common electrode includes a portion positioned over the second insulating layer. The first coloring layer overlaps with the first light-emitting device. The second coloring layer overlaps with the second light-emitting device. The second coloring layer and the first coloring layer transmit light of different colors. The first layer and the second layer contain the same light-emitting material and are apart from each other.

公开(公告)号：US20240423025A1

公开(公告)日：2024-12-19

申请号：US18701269

申请日：2022-10-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryota HODO ,  Yasunori SASAMURA ,  Shinya SASAGAWA

IPC: H10K59/122 ,  H10K59/12 ,  H10K59/80

Abstract: A display apparatus with high display quality is provided. The display apparatus includes a first light-emitting device, a second light-emitting device, a first coloring layer, a second coloring layer, and a first insulating layer. The first light-emitting device includes a first pixel electrode over the first insulating layer, a first EL layer over the first pixel electrode, and a common electrode over the first EL layer. The second light-emitting device includes a second pixel electrode over the first insulating layer, a second EL layer over the second pixel electrode, and the common electrode over the second EL layer. The first coloring layer is provided to overlap with the first light-emitting device. The second coloring layer is provided to overlap with the second light-emitting device. The first coloring layer and the second coloring layer transmit light of different wavelength ranges. The first insulating layer includes a depressed portion between the first pixel electrode and the second pixel electrode. A third EL layer is provided in the depressed portion of the first insulating layer. The first EL layer, the second EL layer, and the third EL layer contain the same material. The sum of the thickness of the first pixel electrode and the depth of the depressed portion is larger than the thickness of the third EL layer.

公开(公告)号：US20240215291A1

公开(公告)日：2024-06-27

申请号：US18555927

申请日：2022-04-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shinya SASAGAWA ,  Ryota HODO ,  Hiroaki HONDA ,  Yasunori SASAMURA

IPC: H10K50/13 ,  H10K59/131 ,  H10K71/00 ,  H10K71/40 ,  H10K71/60

CPC classification number: H10K50/13 ,  H10K59/131 ,  H10K71/40 ,  H10K71/60 ,  H10K71/621

Abstract: Provided is a display device with high display quality. The display device includes a first pixel and a second pixel provided to be adjacent to the first pixel. The first pixel includes a first pixel electrode, a first EL layer over the first pixel electrode, and a common electrode over the first EL layer; the second pixel includes a second pixel electrode, a second EL layer over the second pixel electrode, and the common electrode over the second EL layer; each of the first pixel electrode and the second pixel electrode has a tapered shape on a side surface; a taper angle of the tapered shape is smaller than 90 degrees; and the display device includes a region where the distance between the first pixel electrode and the second pixel electrode is less than or equal to one micrometer.

公开(公告)号：US20250081737A1

公开(公告)日：2025-03-06

申请号：US18293193

申请日：2022-07-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Ryota HODO ,  Yasuhiro JINBO ,  Yasunori SASAMURA ,  Hiromi SAWAI

IPC: H10K59/122 ,  H10K59/12 ,  H10K59/80

Abstract: A highly reliable display device is provided. The display device includes a first light-emitting element, a second light-emitting element adjacent to the first light-emitting element, a first insulating layer provided between the first light-emitting element and the second light-emitting element, and a second insulating layer over the first insulating layer. The first light-emitting element includes a first conductive layer, a second conductive layer covering an upper surface and a side surface of the first conductive layer, a first EL layer covering an upper surface and a side surface of the second conductive layer, and a common electrode over the first EL layer. The second light-emitting element includes a third conductive layer, a fourth conductive layer covering an upper surface and a side surface of the third conductive layer, a second EL layer covering an upper surface and a side surface of the fourth conductive layer, and the common electrode over the second EL layer. The common electrode is provided over the second insulating layer. The visible light reflectance of the first conductive layer is higher than the visible light reflectance of the second conductive layer. The visible light reflectance of the third conductive layer is higher than the visible light reflectance of the fourth conductive layer.