# US 11,114,522 B2 · Display device, manufacturing method of display device, and exposure device

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- Number: US 11,114,522 B2
- Document ID: US11114522B2
- Status: Granted
- Kind: B2
- Application number: 16/651,345
- Filed: 2017-09-29
- Published: 2020-07-23
- Granted: 2021-09-07
- Earliest claimed: 2017-09-29
- Assignees: Sharp Kabushiki Kaisha
- Applicants: Sharp Kabushiki Kaisha
- Inventors: Shinji Ichikawa; Hiroki Taniyama; Shinsuke Saida; Ryosuke Gunji; Tohru Okabe; Yoshihiro Nakada; Hiroharu Jinmura; Akira Inoue
- Web page: https://patentgrep.com/patent/US11114522B2

## CPC

- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00)
- H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
- H05B 33/22: characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
- H10K 59/1315: {comprising structures specially adapted for lowering the resistance}
- H10K 59/8723: {Vertical spacers, e.g. arranged between the sealing arrangement and the OLED}
- H10K 2102/3026: {Top emission}
- H10K 2102/351: {Thickness}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

A display device includes a plurality of picture elements, wherein a first electrode is formed in each of the plurality of picture elements, a cover layer is formed such that an opening of the first electrode is formed, a spacer in a layer identical to the cover layer is provided between two of the first electrodes, the spacer is formed with a height greater than a height of the cover layer, and an outer edge portion of the spacer is spaced from an outer edge portion of the cover layer.

## Claims

### Claim 1

A display device comprising:
a plurality of picture elements,
wherein a first electrode is formed in each of the plurality of picture elements,
a second electrode opposite to the first electrode,
a light-emitting layer is formed between the first electrode and the second electrode,
a cover layer is formed such that an opening of the first electrode is formed,
a spacer is provided between two of the first electrodes, the spacer and the cover layer are formed of a same material through a same process,
wherein a width of the spacer is from 8 μm to 12 μm,
the spacer is formed with a height greater than a height of the cover layer, the spacer is provided in a display portion,
wherein the height of the cover layer is from 1 μm to 3 μm,
an outer edge portion of the spacer is spaced from an outer edge portion of the cover layer, and
wherein the outer edge portion of the cover layer and the outer edge portion of the spacer are formed at an interval of 2 μm to 5 μm.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the cover layer and the spacer are formed from the same photosensitive organic material.

### Claim 3 (depends on 1)

The display device according to claim 1, wherein the outer edge portion of the cover layer and the outer edge portion of the spacer are formed at intervals equal to or greater than a resolution of an exposure device to be used.

### Claim 4 (depends on 1)

The display device according to claim 1, wherein the spacer is formed on a surface of an organic film.