Granted Patent B2

US 12,751,147 · App. 18/281,329 · Granted Sep 29, 2026

Inventors: Kenichi Okazaki (Atsugi, JP); Daiki Nakamura (Atsugi, JP); Rai Sato (Tochigi, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

H10K59/122H04R1/222H10K50/15H10K50/16H10K50/171H10K59/1201H10K59/131H10K59/38H10K71/20H10K71/60H04R2499/15

Abstract

Claims (115)

1 . A display apparatus comprising:

a first light-emitting device;

a second light-emitting device;

a first insulating layer;

a second insulating layer;

a third insulating layer;

a first coloring layer; and

a second coloring layer,

wherein the first light-emitting device 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 light-emitting device 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 an end portion of the first pixel electrode and an end portion of the second pixel electrode are covered with the first insulating layer,

wherein the second insulating layer is over the first insulating layer,

wherein the second insulating layer covers side surfaces of the first light-emitting layer and the second light-emitting layer,

wherein the second insulating layer comprises an inorganic material,

wherein the third insulating layer comprises an organic material and overlaps with the first insulating layer and the side surfaces of the first light-emitting layer and the second light-emitting layer with the second insulating layer therebetween,

wherein the first coloring layer is placed to overlap with the first light-emitting device,

wherein the second coloring layer is placed to overlap with the second light-emitting device,

wherein the first light-emitting device and the second light-emitting device are configured to emit white light, and

wherein the first coloring layer and the second coloring layer are configured to transmit visible light of different colors.

2 . The display apparatus according to claim 1 ,

wherein the first light-emitting device comprises a common layer between the first light-emitting layer and the common electrode,

wherein the second light-emitting device comprises the common layer between the second light-emitting layer and the common electrode, and

wherein the common layer comprises at least one of a hole-injection layer, a hole-inhibition layer, a hole-transport layer, an electron-transport layer, an electron-inhibition layer, and an electron-injection layer.

3 . The display apparatus according to claim 1 ,

wherein the first light-emitting layer and the second light-emitting layer comprise the same material.

4 . A display apparatus comprising:

a first light-emitting device;

a second light-emitting device;

a first insulating layer;

a second insulating layer;

a third insulating layer;

a first coloring layer; and

a second coloring layer,

wherein the first light-emitting device comprises a first pixel electrode, a first light-emitting unit over the first pixel electrode, a first charge-generation layer over the first light-emitting unit, a second light-emitting unit over the first charge-generation layer, and a common electrode over the second light-emitting unit,

wherein the second light-emitting device comprises a second pixel electrode, a third light-emitting unit over the second pixel electrode, a second charge-generation layer over the third light-emitting unit, a fourth light-emitting unit over the second charge-generation layer, and the common electrode over the fourth light-emitting unit,

wherein an end portion of the first pixel electrode and an end portion of the second pixel electrode are covered with the first insulating layer,

wherein the second insulating layer is over the first insulating layer,

wherein the second insulating layer covers side surfaces of the first pixel electrode, the second pixel electrode, the first charge-generation layer, and the second charge-generation layer,

wherein the second insulating layer comprises an inorganic material,

wherein the third insulating layer comprises an organic material and overlaps with the first insulating layer and the side surfaces of the first charge-generation layer and the second charge-generation layer and with the second insulating layer therebetween,

wherein the first coloring layer is placed to overlap with the first light-emitting device,

wherein the second coloring layer is placed to overlap with the second light-emitting device,

wherein the first light-emitting device and the second light-emitting device are configured to emit white light, and

wherein the first coloring layer and the second coloring layer are configured to transmit visible light of different colors.

5 . The display apparatus according to claim 4 ,

wherein the first light-emitting device comprises a common layer between the second light-emitting unit and the common electrode,

wherein the second light-emitting device comprises the common layer between the fourth light-emitting unit and the common electrode, and

wherein the common layer comprises at least one of a hole-injection layer, a hole-inhibition layer, a hole-transport layer, an electron-transport layer, an electron-inhibition layer, and an electron-injection layer.

6 . The display apparatus according to claim 4 ,

wherein the first light-emitting unit and the third light-emitting unit comprise the same material,

wherein the first charge-generation layer and the second charge-generation layer comprise the same material, and

wherein the second light-emitting unit and the fourth light-emitting unit comprise the same material.

7 . A display module comprising:

the display apparatus according to claim 1 ; and

at least one of a connector and an integrated circuit.

8 . An electronic device comprising:

the display module according to claim 7 ; and

at least one of a housing, a battery, a camera, a speaker, and a microphone.

9 . A method for manufacturing a display apparatus, comprising:

forming a first pixel electrode and a second pixel electrode over an insulating surface;

forming a first insulating layer covering an end portion of the first pixel electrode and an end portion of the second pixel electrode;

forming a first layer over the first pixel electrode and the second pixel electrode;

forming a first sacrificial layer over the first layer;

processing the first layer and the first sacrificial layer to form a second layer over the first pixel electrode, a second sacrificial layer over the second layer, a third layer over the second pixel electrode, and a third sacrificial layer over the third layer;

forming a first insulating film covering at least a top surface of the first insulating layer, a side surface of the second layer, a side surface of the third layer, a side surface and a top surface of the second sacrificial layer, and a side surface and a top surface of the third sacrificial layer;

processing the first insulating film to form a second insulating layer covering at least the top surface of the first insulating layer, the side surface of the second layer, and the side surface of the third layer;

removing the second sacrificial layer and the third sacrificial layer;

forming a common electrode over the second layer and the third layer; and

forming a first coloring layer overlapping with the second layer and a second coloring layer overlapping with the third layer over the common electrode.

10 . A method for manufacturing a display apparatus, comprising:

forming a first pixel electrode and a second pixel electrode over an insulating surface;

forming a first insulating layer covering an end portion of the first pixel electrode and an end portion of the second pixel electrode;

forming a first layer over the first pixel electrode and the second pixel electrode;

forming a first sacrificial layer over the first layer;

processing the first layer and the first sacrificial layer to form a second layer over the first pixel electrode, a second sacrificial layer over the second layer, a third layer over the second pixel electrode, and a third sacrificial layer over the third layer;

forming, with use of an inorganic material, a first insulating film covering at least a top surface of the first insulating layer, a side surface of the second layer, a side surface of the third layer, a side surface and a top surface of the second sacrificial layer, and a side surface and a top surface of the third sacrificial layer;

forming, with use of an organic material, a second insulating film over the first insulating film;

processing the first insulating film and the second insulating film to form a second insulating layer covering at least the top surface of the first insulating layer, the side surface of the second layer, and the side surface of the third layer and to form a third insulating layer over the second insulating layer;

removing the second sacrificial layer and the third sacrificial layer;

forming a common electrode over the second layer and the third layer; and

forming a first coloring layer overlapping with the second layer and a second coloring layer overlapping with the third layer over the common electrode.

11 . The method for manufacturing a display apparatus, according to claim 10 ,

wherein the second insulating film is formed with use of a photosensitive resin as the organic material.

12 . The method for manufacturing a display apparatus, according to claim 9 ,

wherein a first sacrificial film and a second sacrificial film over the first sacrificial film are formed as the first sacrificial layer,

wherein a first resist mask is formed over the second sacrificial film and then the second sacrificial film is processed with use of the first resist mask,

wherein the first resist mask is removed,

wherein the first sacrificial film is processed with use of the processed second sacrificial film as a mask, and

wherein the first layer is processed with use of the processed first sacrificial film as a mask.

13 . The method for manufacturing a display apparatus, according to claim 9 ,

wherein the second sacrificial layer and the third sacrificial layer are removed and then a fourth layer is formed over the second layer and the third layer, and

wherein the common electrode is formed over the fourth layer.

14 . The display apparatus according to claim 1 ,

wherein the first light-emitting device comprises a common layer between the first light-emitting layer and the common electrode,

wherein the second light-emitting device comprises the common layer between the second light-emitting layer and the common electrode, and

wherein the common layer comprises at least one of a hole-injection layer, a hole-inhibition layer, a hole-transport layer, an electron-transport layer, an electron-inhibition layer, and an electron-injection layer.

15 . The display apparatus according to claim 4 ,

wherein the first light-emitting device comprises a common layer between the second light-emitting unit and the common electrode,

wherein the second light-emitting device comprises the common layer between the fourth light-emitting unit and the common electrode, and

wherein the common layer comprises at least one of a hole-injection layer, a hole-inhibition layer, a hole-transport layer, an electron-transport layer, an electron-inhibition layer, and an electron-injection layer.

16 . The method for manufacturing a display apparatus, according to claim 10 ,

wherein a first sacrificial film and a second sacrificial film over the first sacrificial film are formed as the first sacrificial layer,

wherein a first resist mask is formed over the second sacrificial film and then the second sacrificial film is processed with use of the first resist mask,

wherein the first resist mask is removed,

wherein the first sacrificial film is processed with use of the processed second sacrificial film as a mask, and

wherein the first layer is processed with use of the processed first sacrificial film as a mask.

17 . The method for manufacturing a display apparatus, according to claim 10 ,

wherein the second sacrificial layer and the third sacrificial layer are removed and then a fourth layer is formed over the second layer and the third layer, and

wherein the common electrode is formed over the fourth layer.

18 . The display apparatus according to claim 1 ,

wherein a top surface of the second insulating layer comprises a recessed portion, and

wherein the third insulating layer is provided to fill the recessed portion.

19 . The display apparatus according to claim 4 ,

wherein a top surface of the second insulating layer comprises a recessed portion, and

wherein the third insulating layer is provided to fill the recessed portion.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (105)