Granted Patent B2

US 12,635,355 · App. 18/549,205 · Granted May 19, 2026

Inventors: Shunpei Yamazaki (Setagaya, JP); Satoshi Seo (Sagamihara, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

H10K59/122H10K59/1201H10K59/35H10K59/871H10K59/8722H10K59/873

Abstract

Claims (53)

1 . A display apparatus comprising:

a first light-emitting element; and

a second light-emitting element,

wherein in the first light-emitting element, a first pixel electrode, a first light-emitting layer, and a common electrode are stacked in this order,

wherein in the second light-emitting element, a second pixel electrode, a second light-emitting layer, and the common electrode are stacked in this order,

wherein a first layer and a second layer are included in a region between the first light-emitting element and the second light-emitting element,

wherein the first layer overlaps with the second light-emitting layer and comprises a material that is the same as a material of the first light-emitting layer,

wherein the second layer overlaps with the first light-emitting layer and comprises a material that is the same as a material of the second light-emitting layer,

wherein an end portion of the first light-emitting layer and an end portion of the first layer are provided to face each other in the region between the first light-emitting element and the second light-emitting element, and

wherein an end portion of the second light-emitting layer and an end portion of the second layer are provided to face each other in the region between the first light-emitting element and the second light-emitting element.

2 . A display apparatus comprising:

a first light-emitting element; and

a second light-emitting element,

wherein in the first light-emitting element, a first pixel electrode, a first light-emitting layer, a first intermediate layer, a third light-emitting layer, and a common electrode are stacked in this order,

wherein in the second light-emitting element, a second pixel electrode, a second light-emitting layer, a second intermediate layer, a fourth light-emitting layer, and the common electrode are stacked in this order,

wherein a first layer, a second layer, a third layer, and a fourth layer are included between the first light-emitting element and the second light-emitting element,

wherein the first layer overlaps with the second light-emitting layer, the second intermediate layer, and the fourth light-emitting layer and comprises a material that is the same as a material of the first light-emitting layer,

wherein the second layer overlaps with the first light-emitting layer, the first intermediate layer, and the third light-emitting layer and comprises a material that is the same as a material of the second light-emitting layer,

wherein the third layer overlaps with the first layer and comprises a material that is the same as a material of the third light-emitting layer,

wherein the fourth layer overlaps with the second layer and comprises a material that is the same as a material of the fourth light-emitting layer,

wherein an end portion of the first light-emitting layer and an end portion of the first layer are provided to face each other in a region between the first light-emitting element and the second light-emitting element,

wherein an end portion of the second light-emitting layer and an end portion of the second layer are provided to face each other in the region between the first light-emitting element and the second light-emitting element,

wherein an end portion of the third light-emitting layer and an end portion of the third layer are provided to face each other in the region between the first light-emitting element and the second light-emitting element, and

wherein an end portion of the fourth light-emitting layer and an end portion of the fourth layer are provided to face each other in the region between the first light-emitting element and the second light-emitting element.

3 . The display apparatus according to claim 2 ,

wherein the first light-emitting layer comprises the material that is the same as the material of the third light-emitting layer, and

wherein the second light-emitting layer comprises the material that is the same as the material of the fourth light-emitting layer.

4 . The display apparatus according to claim 1 , further comprising a resin layer,

wherein the resin layer is in the region between the first light-emitting element and the second light-emitting element,

wherein the end portion of the first light-emitting layer and the end portion of the first layer face each other with the resin layer interposed therebetween, and

wherein the end portion of the second light-emitting layer and the end portion of the second layer face each other with the resin layer interposed therebetween.

5 . The display apparatus according to claim 1 , further comprising a first insulating layer,

wherein the first insulating layer is in the region between the first light-emitting element and the second light-emitting element, and

wherein the first insulating layer is in contact with the end portion of the first light-emitting layer, the end portion of the second light-emitting layer, the end portion of the first layer, and the end portion of the second layer.

6 . A manufacturing method of a display apparatus, comprising:

a first step of forming a first pixel electrode and a second pixel electrode side by side;

a second step of forming an island-shaped first light-emitting layer over the first pixel electrode with use of a first metal mask;

a third step of forming an island-shaped second light-emitting layer over the second pixel electrode with use of a second metal mask, the second light-emitting layer overlapping with an end portion of the first light-emitting layer;

a fourth step of dividing each of the first light-emitting layer and the second light-emitting layer by etching in a region between the first pixel electrode and the second pixel electrode; and

a fifth step of forming a common electrode covering the first light-emitting layer and the second light-emitting layer.

7 . The manufacturing method of a display apparatus, according to claim 6 , further comprising, between the fourth step and the fifth step, a sixth step of forming a resin layer in a slit formed by the etching.

8 . The manufacturing method of a display apparatus, according to claim 7 ,

wherein a photosensitive organic resin is used for the resin layer.

9 . The manufacturing method of a display apparatus, according to claim 7 , further comprising, between the fourth step and the sixth step, a seventh step of forming a first insulating layer in contact with a side surface of the first light-emitting layer and a side surface of the second light-emitting layer that are exposed by the etching.

10 . The manufacturing method of a display apparatus, according to claim 9 ,

wherein an inorganic insulating film formed by an atomic layer deposition method is used for the first insulating layer.

11 . The display apparatus according to claim 2 , further comprising a resin layer,

wherein the resin layer is in the region between the first light-emitting element and the second light-emitting element,

wherein the end portion of the first light-emitting layer and the end portion of the first layer face each other with the resin layer interposed therebetween, and

wherein the end portion of the second light-emitting layer and the end portion of the second layer face each other with the resin layer interposed therebetween.

12 . The display apparatus according to claim 2 , further comprising a first insulating layer,

wherein the first insulating layer is in the region between the first light-emitting element and the second light-emitting element, and

wherein the first insulating layer is in contact with the end portion of the first light-emitting layer, the end portion of the second light-emitting layer, the end portion of the first layer, and the end portion of the second layer.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (84)