US 2015/0311250 A1Published application

Light-Emitting Device, Electronic Device, and Lighting Device

AssigneeSemiconductor Energy Laboratory Co., Ltd.

InventorsSatoshi Seo, Nobuharu OHSAWA

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Abstract

A novel light-emitting device with small power consumption, which can be formed with high productivity, is provided. The light-emitting device includes a first pixel, a second pixel, and a third pixel. The first pixel includes a first light-emitting element and a first optical element, the second pixel includes a second light-emitting element and a second optical element, and the third pixel includes a third light-emitting element. A first light-emitting layer or a second light-emitting layer is shared among the first to third light-emitting elements. Furthermore, the first light-emitting layer includes a first light-emitting material having a spectrum peak in the range of higher than or equal to 540 nm and lower than or equal to 580 nm, and the second light-emitting layer includes a second light-emitting material having a spectrum peak in the range of higher than or equal to 420 nm and lower than or equal to 480 nm.

Claims20

Dependent claims

A light-emitting device comprising:

a first pixel comprising a first light-emitting element and a first optical element overlapping with the first light-emitting element,
a second pixel comprising a second light-emitting element and a second optical element overlapping with the second light-emitting element, and
a third pixel comprising a third light-emitting element,
wherein a first light of a first color is emitted from the first pixel,
wherein a second light of a second color is emitted from the second pixel,
wherein a third light of a third color is emitted from the third pixel,
wherein the first light-emitting element comprises:
a first electrode;
a first light-emitting layer over the first electrode;
a second light-emitting layer over the first light-emitting layer;
and
a second electrode over the second light-emitting layer,
wherein the second light-emitting element comprises:
a third electrode;
the first light-emitting layer over the third electrode;
the second light-emitting layer over the first light-emitting layer;
and
the second electrode over the second light-emitting layer,
wherein the third light-emitting element comprises:
a fourth electrode;
the second light-emitting layer over the fourth electrode;
and
the second electrode over the second light-emitting layer,
wherein the first light-emitting layer comprises a first light-emitting material having a spectrum peak in a range of higher than or equal to 540 nm and lower than or equal to 580 nm, and
wherein the second light-emitting layer comprises a second light-emitting material having a spectrum peak in a range of higher than or equal to 420 nm and lower than or equal to 480 nm.

22 more elements

A light-emitting device comprising:

a first pixel comprising a first light-emitting element and a first optical element overlapping with the first light-emitting element,
a second pixel comprising a second light-emitting element and a second optical element overlapping with the second light-emitting element, and
a third pixel comprising a third light-emitting element,
wherein a first light of a first color is emitted from the first pixel,
wherein a second light of a second color is emitted from the second pixel,
wherein a third light of a third color is emitted from the third pixel,
wherein the first light-emitting element comprises:
a first electrode;
a first light-emitting layer over the first electrode;
and
a second electrode over the first light-emitting layer,
wherein the second light-emitting element comprises:
a third electrode;
the first light-emitting layer over the third electrode;
and
a second electrode over the first light-emitting layer,
wherein the third light-emitting element comprises:
a fourth electrode;
a second light-emitting layer over the fourth electrode;
the first light-emitting layer over the second light-emitting layer;
and
the second electrode over the first light-emitting layer,
wherein the first light-emitting layer comprises a first light-emitting material having a spectrum peak in a range of higher than or equal to 540 nm and lower than or equal to 580 nm, and
wherein the second light-emitting layer comprises a second light-emitting material having a spectrum peak in a range of higher than or equal to 420 nm and lower than or equal to 480 nm.

21 more elements

A light-emitting device comprising:

a first pixel comprising a first light-emitting element and a first optical element overlapping with the first light-emitting element,
a second pixel comprising a second light-emitting element and a second optical element overlapping with the second light-emitting element,
a third pixel comprising a third light-emitting element, and
a fourth pixel comprising a fourth light-emitting element,
wherein a first light of a first color is emitted from the first pixel,
wherein a second light of a second color is emitted from the second pixel,
wherein a third light of a third color is emitted from the third pixel,
wherein a fourth light of a fourth color is emitted from the fourth pixel,
wherein the first light-emitting element comprises:
a first electrode;
a first light-emitting layer over the first electrode;
a second light-emitting layer over the first light-emitting layer;
and
a second electrode over the second light-emitting layer,
wherein the second light-emitting element comprises:
a third electrode;
the first light-emitting layer over the third electrode;
the second light-emitting layer over the first light-emitting layer;
and
the second electrode over the second light-emitting layer,
wherein the third light-emitting element comprises:
a fourth electrode;
the second light-emitting layer over the fourth electrode;
and
the second electrode over the second light-emitting layer,
wherein the fourth light-emitting element comprises:
a fifth electrode;
the first light-emitting layer over the fifth electrode;
the second light-emitting layer over the first light-emitting layer;
and
the second electrode over the second light-emitting layer,
wherein the first light-emitting layer comprises a first light-emitting material having a spectrum peak in a range of higher than or equal to 540 nm and lower than or equal to 580 nm, and
wherein the second light-emitting layer comprises a second light-emitting material having a spectrum peak in a range of higher than or equal to 420 nm and lower than or equal to 480 nm.

30 more elements

A light-emitting device comprising:

a first pixel comprising a first light-emitting element and a first optical element overlapping with the first light-emitting element,
a second pixel comprising a second light-emitting element and a second optical element overlapping with the second light-emitting element,
a third pixel comprising a third light-emitting element, and
a fourth pixel comprising a fourth light-emitting element,
wherein a first light of a first color is emitted from the first pixel,
wherein a second light of a second color is emitted from the second pixel,
wherein a third light of a third color is emitted from the third pixel,
wherein a fourth light of a fourth color is emitted from the fourth pixel,
wherein the first light-emitting element comprises:
a first electrode;
a first light-emitting layer over the first electrode;
and
a second electrode over the first light-emitting layer,
wherein the second light-emitting element comprises:
a third electrode;
the first light-emitting layer over the third electrode;
and
the second electrode over the first light-emitting layer,
wherein the third light-emitting element comprises:
a fourth electrode;
a second light-emitting layer over the fourth electrode;
the first light-emitting layer over the second light-emitting layer;
and
the second electrode over the first light-emitting layer,
wherein the fourth light-emitting element comprises:
a fifth electrode;
the first light-emitting layer over the fifth electrode;
and
the second electrode over the first light-emitting layer,
wherein the first light-emitting layer comprises a first light-emitting material having a spectrum peak in a range of higher than or equal to 540 nm and lower than or equal to 580 nm, and
wherein the second light-emitting layer comprises a second light-emitting material having a spectrum peak in a range of higher than or equal to 420 nm and lower than or equal to 480 nm.

28 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/694,165Filed 23 Apr 2015
Priority: JP 2014-09145925 Apr 2014
Published: 29 Oct 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H10K 59/35
Devices specially adapted for multicolour light emission: comprising red-green-blue [RGB] subpixels
H10K 50/11
OLEDs or polymer light-emitting diodes [PLED]: characterised by the electroluminescent [EL] layers
H10K 50/15
Carrier transporting layers: hole transporting layers
H10K 59/131
Active-matrix OLED [AMOLED] displays: interconnections, e.g. wiring lines or terminals