# US 10,312,295 B2 · Display device, electro-optical device, electric equipment, metal mask, and pixel array

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- Number: US 10,312,295 B2
- Document ID: US10312295B2
- Status: Granted
- Kind: B2
- Application number: 15/972,734
- Filed: 2018-05-07
- Published: 2018-09-06
- Granted: 2019-06-04
- Earliest claimed: 2014-11-26
- Assignees: Tianma Japan, Ltd.
- Applicants: Tianma Japan, Ltd.
- Inventors: Yojiro Matsueda
- Web page: https://patentgrep.com/patent/US10312295B2

## CPC

- H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels}
- H10K 71/166: {using selective deposition, e.g. using a mask}
- H10K 59/352: {the areas of the RGB subpixels being different}
- H10K 77/111: {Flexible substrates}
- H10K 2102/311: {Flexible OLED}
- Y10T 428/24298: Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A metal mask for making a display device. The display device includes a plurality of pixels, each of the pixels including sub-pixels of a first color, a second color, and a third color, the sub-pixels of the first and second colors being color in a column, and the sub-pixel of the third color being in a row with respect to the sub-pixels of the first and second colors. The metal mask forms the sub-pixels of the third color and includes a plurality of first openings in a first column and a plurality of second openings in a second column next to the first column, where each of the first openings has a first side that is directly opposite, in a direction perpendicular to the first column, respective parts of second sides of both of an adjacent pair of the second openings.

## Claims

### Claim 1

A display device, comprising
a plurality of main pixels arranged in a matrix,
wherein each of the plurality of main pixels includes one sub-pixel of a first color arranged in a first column, one sub-pixel of a second color arranged adjacent to the sub-pixel of the first color in the first column, and one sub-pixel of a third color arranged in a second column adjacent to the first column,
the sub-pixels of the first color are linearly arranged in a first direction,
the sub-pixels of the second color are linearly arranged in the first direction, the sub-pixels of the third color are arranged in the first direction in a zigzag configuration,
in first and second main pixels adjacent to each other in a second direction different from the first direction, the sub-pixel of the first color of the first main pixel is arranged symmetrical to the sub-pixel of the second color of the second main pixel with respect to a first center line and the sub-pixel of the third color of the first main pixel is arranged symmetrical to the sub-pixel of the third color of the second main pixel with respect to a second center line, and
a position of the first center line is different from a position of the second center line in the second direction.

### Claim 2 (depends on 1)

The display device according to claim 1,
wherein each of the sub-pixels of the first to third colors includes a transistor which drives the sub-pixel, an anode electrode connected to the transistor, a contact part which connects the transistor with the anode electrode, an element separation membrane formed on the anode electrode, a light emitting material formed so as to cover an opening part which is provided in the element separation membrane and defines a light emitting region of the sub-pixel, and a cathode electrode formed over the light emitting material,
the light emitting region of the sub-pixel of the first color of the first main pixel is arranged symmetrical to the light emitting region of the sub-pixel of the second color of the second main pixel with respect to the first center line, and
the light emitting region of the sub-pixel of the third color of the first main pixel is arranged symmetrical to the light emitting region of the sub-pixel of the third color of the second main pixel with respect to the second center line.

### Claim 3 (depends on 2)

The display device according to claim 2,
wherein the light emitting material is an organic light emitting material.

### Claim 4 (depends on 3)

The display device according to claim 3,
wherein the contact part of the sub-pixel of the first color and the contact part of the sub-pixel of the second color in a same main pixel are arranged at positions opposite to each other in the first direction, and
the contact part of the sub-pixel of the third color of the first main pixel and the contact part of the sub-pixel of the third color of the second main pixel are arranged at positions opposite to each other in the second direction.

### Claim 5 (depends on 4)

The display device according to claim 4,
wherein each of the light emitting regions of the two sub-pixels of the third color includes a concave in a vicinity of the contact part, and
the concave of the sub-pixel of the third color of the first main pixel and the concave of the sub-pixel of the third color of the second main pixel are arranged at positions opposite to each other in the second direction.

### Claim 6 (depends on 3)

The display device according to claim 3,
wherein the first center line is parallel to the second center line in the first direction.

### Claim 7 (depends on 1)

The display device according to claim 1,
wherein the first color is a color with a highest luminosity factor and the third color is a color with a lowest luminosity factor.

### Claim 8 (depends on 1)

An electro-optical device, comprising a display device according to claim 1.

### Claim 9 (depends on 1)

An electric apparatus, comprising a display device according to claim 1 formed on a flexible substrate.