US 2026/0314187 A1Published application

Display device

AssigneeSemiconductor Energy Laboratory Co., Ltd.

InventorsRyota HODO, Yuichi YANAGISAWA, Hiromi SAWAI

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Abstract

Provided is a display device with high display quality. A first pixel, a second pixel provided adjacent to the first pixel, a first insulating layer, a second insulating layer over the first insulating layer, and a third insulating layer over the second insulating layer are included; 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; the first insulating layer and the third insulating layer each contain an inorganic material; the second insulating layer contains an organic material; the second insulating layer overlaps with the side surface of the first EL layer and the side surface of the second EL layer with the first insulating layer therebetween; the second insulating layer overlaps with the common electrode with the third insulating layer therebetween; and the third insulating layer is in contact with the first insulating layer in a region not overlapping with the second insulating layer.

Claims8

Dependent claims

A display device comprising:

a first pixel;
a second pixel adjacent to the first pixel;
and
an intermediate region between the first pixel and the second pixel,
wherein the first pixel comprises a first pixel electrode, a first light-emitting layer over the first pixel electrode, and a common electrode over the first light-emitting layer,
wherein the second pixel comprises a second pixel electrode, a second light-emitting layer over the second pixel electrode, and the common electrode over the second light-emitting layer,
wherein the intermediate region comprises an edge region of the first pixel electrode, an edge region of the second pixel electrode, a first insulating layer between the edge region of the first pixel electrode and the edge region of the second pixel electrode, a second insulating layer over the first insulating layer, a third insulating layer over the second insulating layer, and the common electrode over the third insulating layer,
wherein the third insulating layer is in contact with the first insulating layer over the edge region of the first pixel electrode,
wherein the third insulating layer is in contact with the first insulating layer over the edge region of the second pixel electrode,
wherein the first insulating layer, the second insulating layer and the third insulating layer overlap between the edge region of the first insulating layer and the edge region of the second insulating layer,
wherein each of the first insulating layer and the third insulating layer comprises an inorganic material, and
wherein the second insulating layer comprises an organic material.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/711,280Filed 17 Jun 2026
Priority: JP 2021-0658538 Apr 2021
Published: 8 Oct 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H10K 59/122
Active-matrix OLED [AMOLED] displays: pixel-defining structures or layers, e.g. banks
H10K 59/121
Active-matrix OLED [AMOLED] displays: characterised by the geometry or disposition of pixel elements
H10K 59/124
Active-matrix OLED [AMOLED] displays: insulating layers formed between TFT elements and OLED elements
H10K 59/351
Comprising red-green-blue [RGB] subpixels: comprising more than three subpixels, e.g. red-green-blue-white [RGBW]

Family

Application18/282,851Continuation · filed 25 Mar 2022
Application19/711,280Continuation
US 12,666,807 B2Related patent
US 2024/0172491 A1Published application
US 2026/0314187 A1This patent

From the US filing history. Foreign family members aren’t listed.