IP Library › Granted Patent US 12713781
Granted Patent B2
US 12713781 · App. 18/567,650 · Granted Aug 18, 2026

Display apparatus

Inventors: Kenichi Okazaki (Tokyo, JP); Daiki Nakamura (Atsugi, JP); Nozomu Sugisawa (Isehara, JP)
Assignee: Semiconductor Energy Laboratory Co., Ltd.
H10K59/122H10K59/80521H10K59/873H10K59/871H10K59/8722H10K59/876
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Quick Facts
Patent No.
US 12713781
App. No.
18/567,650
Granted
Aug 18, 2026
Kind
B2
Abstract

A high-resolution display apparatus is provided. The display apparatus includes a first light-emitting device, a second light-emitting device positioned next to the first light-emitting device, a third light-emitting device positioned next to the second light-emitting device, a first insulating layer, and a second insulating layer. The first insulating layer includes a first region between the first light-emitting device and the second light-emitting device and a second region between the second light-emitting device and the third light-emitting device. The second insulating layer includes a region positioned over a lower electrode of the third light-emitting device. A thickness of a third organic compound layer of the third light-emitting device is different from a thickness of a first organic compound layer of the first light-emitting device. The thickness of the third organic compound layer of the third light-emitting device is different from a thickness of a second organic compound layer of the second light-emitting device. In a cross-sectional view, the first insulating layer is provided so that a height from a bottom surface of the lower electrode of the third light-emitting device is equal to a height from a bottom surface of a lower electrode of the second light-emitting device.

Claims (60)

1 . A display apparatus comprising:

a first light-emitting device;

a second light-emitting device positioned next to the first light-emitting device;

a third light-emitting device positioned next to the second light-emitting device;

a first insulating layer; and

a second insulating layer,

wherein the first light-emitting device to the third light-emitting device each comprise a lower electrode, an organic compound layer over the lower electrode, and an upper electrode over the organic compound layer,

wherein in a cross-sectional view, the first insulating layer comprises a first region between the first light-emitting device and the second light-emitting device and a second region between the second light-emitting device and the third light-emitting device,

wherein the second insulating layer comprises a region positioned over the lower electrode of the third light-emitting device,

wherein a thickness of the organic compound layer of the third light-emitting device is different from a thickness of the organic compound layer of the first light-emitting device,

wherein the thickness of the organic compound layer of the third light-emitting device is different from a thickness of the organic compound layer of the second light-emitting device, and

wherein in the cross-sectional view, the first insulating layer is provided so that a height from a bottom surface of the lower electrode of the third light-emitting device is equal to a height from a bottom surface of the lower electrode of the second light-emitting device.

2 . The display apparatus according to claim 1 , further comprising:

a first sacrificial layer selectively provided over the organic compound layer of the first light-emitting device;

a second sacrificial layer selectively provided over the organic compound layer of the second light-emitting device; and

a third sacrificial layer selectively provided over the organic compound layer of the third light-emitting device.

3 . A display apparatus comprising:

a first light-emitting device;

a second light-emitting device positioned next to the first light-emitting device;

a third light-emitting device positioned next to the second light-emitting device;

a first insulating layer; and

a second insulating layer,

wherein the first light-emitting device to the third light-emitting device each comprise a lower electrode, an organic compound layer over the lower electrode, and an upper electrode over the organic compound layer,

wherein in a cross-sectional view, the first insulating layer comprises a first region between the first light-emitting device and the second light-emitting device and a second region between the second light-emitting device and the third light-emitting device,

wherein the second insulating layer comprises a region overlapping with the lower electrode of the third light-emitting device,

wherein a thickness of the organic compound layer of the third light-emitting device is smaller than a thickness of the organic compound layer of the first light-emitting device,

wherein the thickness of the organic compound layer of the third light-emitting device is smaller than a thickness of the organic compound layer of the second light-emitting device, and

wherein in the cross-sectional view, the first insulating layer is provided so that a height from a bottom surface of the lower electrode of the third light-emitting device is equal to a height from a bottom surface of the lower electrode of the second light-emitting device.

4 . The display apparatus according to claim 3 , further comprising:

a first sacrificial layer selectively provided over the organic compound layer of the first light-emitting device;

a second sacrificial layer selectively provided over the organic compound layer of the second light-emitting device; and

a third sacrificial layer selectively provided over the organic compound layer of the third light-emitting device.

5 . A display apparatus comprising:

a first conductive layer and a second conductive layer each provided over a first layer;

a first organic compound layer comprising a region overlapping with the first conductive layer;

a first insulating layer comprising a region overlapping with the second conductive layer;

a second organic compound layer comprising a region overlapping with the second conductive layer and the first insulating layer;

a first sacrificial layer comprising a region overlapping with the first organic compound layer;

a second sacrificial layer comprising a region overlapping with the second organic compound layer;

a second insulating layer comprising a region overlapping with the first sacrificial layer and the second sacrificial layer; and

a third conductive layer comprising a region overlapping with the second insulating layer,

wherein a distance between the second conductive layer and the third conductive layer is different from a distance between the first conductive layer and the third conductive layer,

wherein between the first conductive layer and the second conductive layer, the first layer comprises a first depressed portion and a second depressed portion deeper than the first depressed portion,

wherein the first insulating layer overlaps with the second depressed portion, and

wherein the second insulating layer overlaps with the first depressed portion and the second depressed portion.

6 . The display apparatus according to claim 5 , further comprising a protective layer over the third conductive layer.

7 . A display apparatus comprising:

a first conductive layer and a second conductive layer each provided over a first layer;

a first organic compound layer comprising a region overlapping with the first conductive layer;

a first insulating layer comprising a region overlapping with the second conductive layer;

a second organic compound layer comprising a region overlapping with the second conductive layer and the first insulating layer;

a first sacrificial layer comprising a region overlapping with the first organic compound layer;

a second sacrificial layer comprising a region overlapping with the second organic compound layer;

a second insulating layer comprising a region overlapping with the first sacrificial layer and the second sacrificial layer; and

a third conductive layer comprising a region overlapping with the second insulating layer,

wherein a distance between the second conductive layer and the third conductive layer is shorter than a distance between the first conductive layer and the third conductive layer,

wherein between the first conductive layer and the second conductive layer, the first layer comprises a first depressed portion and a second depressed portion deeper than the first depressed portion,

wherein the first insulating layer overlaps with the second depressed portion, and

wherein the second insulating layer overlaps with the first depressed portion and the second depressed portion.

8 . The display apparatus according to claim 7 , further comprising a protective layer over the third conductive layer.