# US 10,312,471 B2 · Method of manufacturing display device, display device, and electronic device

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- Number: US 10,312,471 B2
- Document ID: US10312471B2
- Status: Granted
- Kind: B2
- Application number: 15/561,705
- Filed: 2016-03-04
- Published: 2018-04-05
- Granted: 2019-06-04
- Earliest claimed: 2015-04-22
- Assignees: Sony Corporation
- Applicants: Sony Corporation
- Inventors: Hiroshi Fujimaki; Tomoyoshi Ichikawa
- Web page: https://patentgrep.com/patent/US10312471B2

## CPC

- H10K 59/1315: {comprising structures specially adapted for lowering the resistance}
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- H10K 59/80522: {combined with auxiliary electrodes}
- H10K 71/621: {Providing a shape to conductive layers, e.g. patterning or selective deposition}
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 2102/3026: {Top emission}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A method of manufacturing a display device including first electrodes provided for respective pixels, an insulating layer having openings respectively opposed to the first electrodes, an organic layer including a light emitting layer common to all the pixels, and a second electrode formed over an entire surface of the organic layer laminated on a first substrate, includes a step of forming an auxiliary wiring made of a metallic material layer by irradiating the metallic material layer with energy rays from a side of the metallic material layer and selectively removing the metallic material layer by energy absorbed by a part corresponding to the pixel after the metallic material layer has been formed on an entire surface of the second electrode.

## Claims

### Claim 1

A method of manufacturing a display device including:
first electrodes provided for respective pixels;
an insulating layer having openings respectively opposed to the first electrodes;
an organic layer including a light emitting layer common to all the pixels; and
a second electrode formed over an entire surface of the organic layer laminated on a first substrate,
the method comprising:
a step of forming an auxiliary wiring made of a metallic material layer by
irradiating the metallic material layer with energy rays from a side of the metallic material layer and
selectively removing the metallic material layer by energy absorbed by a part corresponding to the pixel after the metallic material layer has been formed on an entire surface of the second electrode,
wherein the part corresponding to the pixel is configured to form a resonance structure for absorbing the energy rays between a reflective surface on a side of the first substrate and a reflective surface formed of the metallic material layer on the second electrode.

### Claim 2 (depends on 1)

The method of manufacturing a display device according to claim 1, wherein the reflective surface on the side of the first substrate is formed of a surface of the first electrode made of a metal material.

### Claim 3 (depends on 1)

The method of manufacturing a display device according to claim 1, wherein the first electrode is made of a transparent conductive material, and the reflective surface on the side of the first substrate is formed of a surface of a reflective electrode provided separately from the first electrode.

### Claim 4 (depends on 1)

The method of manufacturing a display device according to claim 1, wherein a part between adjacent pixels is configured to form a resonance structure for reflecting the energy rays between the reflective surface on the side of the first substrate and the reflective surface formed of the metallic material layer on the second electrode.

### Claim 5 (depends on 4)

The method of manufacturing a display device according to claim 4, wherein the reflective surface on the side of the first substrate in the part between the adjacent pixels is formed of a surface of a reflection plate provided on the first substrate in the part between the adjacent pixels.

### Claim 6 (depends on 1)

The method of manufacturing a display device according to claim 1, wherein the energy ray is a laser beam.

### Claim 7 (depends on 6)

The method of manufacturing a display device according to claim 6, wherein the energy ray is a laser beam in an infrared region.