# US 10,373,533 B2 · Display apparatus and electronic equipment with pixels that include sub-pixels with corresponding areas

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- Number: US 10,373,533 B2
- Document ID: US10373533B2
- Status: Granted
- Kind: B2
- Application number: 15/924,567
- Filed: 2018-03-19
- Published: 2018-07-26
- Granted: 2019-08-06
- Earliest claimed: 2011-11-25
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Yasuyuki Matsui; Akira Sakaigawa; Masaaki Kabe; Kenta Seki
- Web page: https://patentgrep.com/patent/US10373533B2

## CPC

- G09F 13/04: Signs, boards or panels, illuminated from behind the insignia
- G02F 1/133514: {Colour filters}
- G09G 3/3607: {for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127)}
- G02F 2201/52: RGB geometrical arrangements
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2300/0465: Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
- G09G 2300/0478: related to liquid crystal pixels
- G09G 2310/08: Details of timing specific for flat panels, other than clock recovery
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- G09G 2320/0247: Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
- G09G 2330/021: Power management, e.g. power saving
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

Disclosed herein is a display apparatus including: a first pixel including three sub-pixels for displaying three primary colors respectively; and a second pixel including three sub-pixels for displaying two colors selected among the three primary colors and a predetermined color other than the three primary colors, wherein, in the first pixel, the size of the display surface of a sub-pixel for displaying a specific color included in the three primary colors as a specific color missing from the second pixel is larger than each of the sizes of the display surfaces of the two other sub-pixels for displaying the two other primary colors respectively.

## Claims

### Claim 1

A display apparatus comprising:
a first pixel including a first sub-pixel for displaying a first primary color, a second sub-pixel for displaying a second primary color, and a third sub-pixel for displaying a third primary color; and
a second pixel including a first sub-pixel for displaying the first primary color, a second sub-pixel for displaying the second primary color, and a fourth sub-pixel for displaying a fourth color that is different from the first primary color, the second primary color and the third primary color,
wherein, in the first pixel, each of areas of the first sub-pixel and the second sub-pixel is substantially 80% of one third of an area of the first pixel, and an area of the third sub-pixel is substantially 7/15 of the area of the first pixel; and
wherein, in the second pixel, each of areas of the first sub-pixel and the second sub-pixel is substantially 80% of one third of an area of the second pixel, and an area of the fourth sub-pixel that displays the fourth color is substantially 7/15 of the area of the second pixel.

### Claim 2 (depends on 1)

The display apparatus according to claim 1, wherein the area of the third sub-pixel in the first pixel is substantially equal to the area of the fourth sub-pixel that displays the fourth color in the second pixel.

### Claim 3 (depends on 1)

The display apparatus according to claim 1, wherein the first pixel and the second pixel are laid out alternately in a direction parallel to pixel rows and a direction parallel to pixel columns.

### Claim 4 (depends on 1)

The display apparatus according to claim 1, wherein
the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel; and
the first primary color is red, the second primary color is green and the third primary color is blue.

### Claim 5 (depends on 1)

The display apparatus according to claim 1, wherein
the fourth sub-pixel is a white sub-pixel, and the fourth color is white.

### Claim 6 (depends on 1)

The display apparatus according to claim 1, wherein
the first pixel consists of the first sub-pixel, the second sub-pixel and the third sub-pixel, and
the second pixel consists of the first sub-pixel, the second sub-pixel and the fourth sub-pixel.

### Claim 7

An electronic device including a display apparatus comprising:
a first pixel including a first sub-pixel for displaying a first primary color, a second sub-pixel for displaying a second primary color, and a third sub-pixel for displaying a third primary color; and
a second pixel including a first sub-pixel for displaying the first primary color, a second sub-pixel for displaying the second primary color, and a fourth sub-pixel for displaying a fourth color that is different from the first primary color, the second primary color and the third primary color,
wherein, in the first pixel, each of areas of the first sub-pixel and the second sub-pixel is substantially 80% of one third of an area of the first pixel, and an area of the third sub-pixel is substantially 7/15 of the area of the first pixel; and
wherein, in the second pixel, each of areas of the first sub-pixel and the second sub-pixel is substantially 80% of one third of an area of the second pixel, and an area of the fourth sub-pixel that displays the fourth color is substantially 7/15 of the area of the second pixel.

### Claim 8 (depends on 7)

The electronic device according to claim 7, wherein the area of the third sub-pixel in the first pixel is substantially equal to the area of the fourth sub-pixel that displays the fourth color in the second pixel.

### Claim 9 (depends on 7)

The electronic device according to claim 7, wherein the first pixel and the second pixel are laid out alternately in a direction parallel to pixel rows and a direction parallel to pixel columns.

### Claim 10 (depends on 7)

The electronic device according to claim 7, wherein
the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel; and
the first primary color is red, the second primary color is green and the third primary color is blue.

### Claim 11 (depends on 7)

The electronic device according to claim 7, wherein the fourth sub-pixel is a white sub-pixel, and the fourth color is white.
