Granted Patent B2

US 12,701,888 · App. 18/571,991 · Granted Aug 4, 2026

Inventors: Shunpei Yamazaki (Tokyo, JP); Hiroki Adachi (Tochigi, JP); Rai Sato (Tochigi, JP); Daisuke Kubota (Atsugi, JP); Kentaro Hayashi (Atsugi, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

H10K59/353H10K39/34H10K59/1201

Abstract

Claims (99)

1 . A display apparatus comprising, over a substrate having a visible-light-transmitting property, a first light-emitting element, a second light-emitting element adjacent to the first light-emitting element, a light-receiving element adjacent to the second light-emitting element, a first organic layer provided between the second light-emitting element and the light-receiving element, and a second organic layer provided between the first light-emitting element and the second light-emitting element,

wherein the first light-emitting element 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 element 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 light-receiving element comprises a third pixel electrode, a photoelectric conversion layer over the third pixel electrode, and the common electrode over the photoelectric conversion layer,

wherein the common electrode is provided over the first organic layer and the second organic layer,

wherein the common electrode has a visible-light-transmitting property, and

wherein transmittance of light with a specific wavelength being at least part of a visible light wavelength through the first organic layer is lower than transmittance of light with the specific wavelength in the second organic layer.

2 . The display apparatus according to claim 1 ,

wherein the first and second pixel electrodes have a visible-light-transmitting property.

3 . The display apparatus according to claim 1 ,

wherein end portions of the first to third pixel electrodes have a tapered shape,

wherein the first light-emitting layer covers the end portion of the first pixel electrode,

wherein the second light-emitting layer covers the end portion of the second pixel electrode, and

wherein the photoelectric conversion layer covers the end portion of the third pixel electrode.

4 . The display apparatus according to claim 3 ,

wherein the first light-emitting layer comprises a first tapered portion between the end portion of the first pixel electrode and the second organic layer,

wherein the second light-emitting layer comprises a second tapered portion between the end portion of the second pixel electrode and the second organic layer, and

wherein the photoelectric conversion layer comprises a third tapered portion between the end portion of the third pixel electrode and the first organic layer.

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

a first carrier-transport layer over the first light-emitting layer;

a second carrier-transport layer over the second light-emitting layer; and

a third carrier-transport layer over the photoelectric conversion layer.

6 . The display apparatus according to claim 5 , further comprising:

a common layer over the first carrier-transport layer, the second carrier-transport layer, the third carrier-transport layer, the first organic layer, and the second organic layer,

wherein the common electrode is provided over the common layer.

7 . The display apparatus according to claim 6 ,

wherein the common layer comprises a carrier-injection layer.

8 . A display module comprising:

the display apparatus according to claim 1 , and

at least one of a connector and an integrated circuit.

9 . An electronic apparatus comprising:

the display module according to claim 8 , and

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

10 . A display apparatus comprising, over a substrate having a visible-light-transmitting property, a first light-emitting element, a second light-emitting element adjacent to the first light-emitting element, a light-receiving element adjacent to the second light-emitting element, a first organic layer provided between the second light-emitting element and the light-receiving element, and a second organic layer provided between the first light-emitting element and the second light-emitting element,

wherein the first light-emitting element 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 element 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 light-receiving element comprises a third pixel electrode, a photoelectric conversion layer over the third pixel electrode, and the common electrode over the photoelectric conversion layer,

wherein the common electrode is provided over the first organic layer and the second organic layer,

wherein the common electrode has a visible-light-transmitting property, and

wherein transmittance of at least one of red light, green light, and blue light through the first organic layer is lower than the transmittance of the light in the second organic layer.

11 . A method for fabricating a display apparatus comprising the steps of:

forming a first pixel electrode, a second pixel electrode, and a third pixel electrode over a substrate with a visible-light-transmitting property;

forming a first light-emitting film over the substrate and the first to third pixel electrodes;

forming a first sacrificial film over the first light-emitting film;

processing the first light-emitting film and the first sacrificial film to form a first light-emitting layer and a first sacrificial layer over the first light-emitting layer;

forming a second light-emitting film over the substrate, the second pixel electrode, the third pixel electrode, and the first sacrificial layer;

forming a second sacrificial film over the second light-emitting film;

processing the second light-emitting film and the second sacrificial film to form a second light-emitting layer adjacent to the first light-emitting layer and a second sacrificial layer over the second light-emitting layer;

forming a photoelectric conversion film over the substrate, the third pixel electrode, the first sacrificial layer, and the second sacrificial layer;

forming a third sacrificial film over the photoelectric conversion film;

processing the photoelectric conversion film and the third sacrificial film to form a photoelectric conversion layer adjacent to the second light-emitting layer and a third sacrificial layer over the photoelectric conversion layer;

forming a first organic layer between the second light-emitting layer and the photoelectric conversion layer;

forming a second organic layer between the first light-emitting layer and the second light-emitting layer, wherein transmittance of light with a specific wavelength being at least part of the visible light wavelength in the second organic layer is higher than transmittance of light with the specific wavelength in the first organic layer;

removing at least part of the first to third sacrificial layer; and

forming a common electrode with a visible-light-transmitting property over the first light-emitting layer, the second light-emitting layer, the photoelectric conversion layer, the first organic layer, and the second organic layer.

12 . The method for fabricating a display apparatus according to claim 11 ,

wherein the first and second pixel electrodes have a visible-light-transmitting property.

13 . The method for fabricating a display apparatus according to claim 11 , further comprising the steps of:

forming the second organic layer before forming the first organic layer;

forming a protective film over the first to third sacrificial layers and the second organic layer before forming the first organic layer;

forming an organic film over the protective film; and

processing the organic film to form the first organic layer.

14 . The method for fabricating a display apparatus according to claim 13 , further comprising the step of processing the protective film to form a protective layer below the first organic layer.

15 . The method for fabricating a display apparatus according to claim 11 , further comprising the steps of:

forming a common layer over the first light-emitting layer, the second light-emitting layer, the photoelectric conversion layer, the first organic layer, and the second organic layer after removing at least part of the first to third sacrificial layers; and

forming the common electrode over the common layer.

16 . The method for fabricating a display apparatus according to claim 15 ,

wherein the common layer comprises a carrier-injection layer.

17 . The method for fabricating a display apparatus according to claim 11 , further comprising the steps of:

forming a film having a first carrier-transport property over the first light-emitting film before forming the first sacrificial film;

processing the first light-emitting film, the film having the first carrier-transport property, and the first sacrificial film to form the first light-emitting layer, a first carrier-transport layer over the first light-emitting layer, and the first sacrificial layer over the first carrier-transport layer;

forming a film having a second carrier-transport property over the second light-emitting film before forming the second sacrificial film;

processing the second light-emitting film, the film having the second carrier-transport property, and the second sacrificial film to form the second light-emitting layer, a second carrier-transport layer over the second light-emitting layer, and the second sacrificial layer over the second carrier-transport layer;

forming a film having a third carrier-transport property over the photoelectric conversion film before forming the third sacrificial film; and

processing the photoelectric conversion film, the film having the third carrier-transport property, and the third sacrificial film to form the photoelectric conversion layer, a third carrier-transport layer over the photoelectric conversion layer, and the third sacrificial layer over the third carrier-transport layer.

18 . The method for fabricating a display apparatus according to claim 11 , further comprising the steps of:

forming the first to third pixel electrodes to have end portions with tapered shapes;

processing the first light-emitting film to form the first light-emitting layer to cover the end portion of the first pixel electrode;

processing the second light-emitting film to form the second light-emitting layer to cover the end portion of the second pixel electrode; and

processing the photoelectric conversion film to form the photoelectric conversion layer to cover the end portion of the third pixel electrode.

19 . The method for fabricating a display apparatus according to claim 18 , further comprising the steps of:

processing the first light-emitting film to form the first light-emitting layer so as to comprise a first tapered portion between the end portion of the first pixel electrode and an end portion of the first sacrificial layer;

processing the second light-emitting film to form the second light-emitting layer so as to comprise a second tapered portion between the end portion of the second pixel electrode and an end portion of the second sacrificial layer; and

processing the photoelectric conversion film to form the photoelectric conversion layer so as to comprise a third tapered portion between the end portion of the third pixel electrode and an end portion of the third sacrificial layer.

20 . A method for fabricating a display apparatus comprising the steps of:

forming a first pixel electrode, a second pixel electrode, and a third pixel electrode over a substrate with a visible-light-transmitting property;

forming a first light-emitting film over the substrate and over the first to third pixel electrodes;

forming a first sacrificial film over the first light-emitting film;

processing the first light-emitting film and the first sacrificial film to form a first light-emitting layer and a first sacrificial layer over the first light-emitting layer;

forming a second light-emitting film over the substrate, the second pixel electrode, over the third pixel electrode, and the first sacrificial layer;

forming a second sacrificial film over the second light-emitting film;

processing the second light-emitting film and the second sacrificial film to form a second light-emitting layer adjacent to the first light-emitting layer and a second sacrificial layer over the second light-emitting layer;

forming a photoelectric conversion film over the substrate, the third pixel electrode, the first sacrificial layer, and the second sacrificial layer;

forming a third sacrificial film over the photoelectric conversion film;

processing the photoelectric conversion film and the third sacrificial film to form a photoelectric conversion layer adjacent to the second light-emitting layer and a third sacrificial layer over the photoelectric conversion layer;

forming a first organic layer between the second light-emitting layer and the photoelectric conversion layer;

forming a second organic layer between the first light-emitting layer and the second light-emitting layer, wherein the second organic layer has transmittance of at least one of red light, green light, and blue light higher than the transmittance of the light through the first organic layer;

removing at least part of the first to third sacrificial layer; and

forming a common electrode with a visible-light-transmitting property over the first light-emitting layer, the second light-emitting layer, the photoelectric conversion layer, the first organic layer, and the second organic layer.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (94)