# US 12,008,941 B2 · Display device and method of driving the same

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- Number: US 12,008,941 B2
- Document ID: US12008941B2
- Status: Granted
- Kind: B2
- Application number: 17/687,701
- Filed: 2022-03-07
- Published: 2022-06-16
- Granted: 2024-06-11
- Earliest claimed: 2019-05-13
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Geun Young Jeong; Weon Jun Choe
- Web page: https://patentgrep.com/patent/US12008941B2

## CPC

- G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)}
- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- G09G 3/2007: {Display of intermediate tones}
- G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)}
- G09G 2300/0413: Details of dummy pixels or dummy lines in flat panels
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2310/0232: Special driving of display border areas
- G09G 2320/0242: Compensation of deficiencies in the appearance of colours
- G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve
- 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

A display device including a first dot including a first shared pixel and a first dedicated pixel, a second dot disposed closest to the first dot in a first direction and including a second shared pixel and a second dedicated pixel, a third dot disposed in the first direction from the second dot and including a third shared pixel and a third dedicated pixel, and a first dummy dot disposed closest to the third dot in the first direction and including a first dummy pixel, in which the first shared pixel and the second shared pixel are configured to emit light having different colors, the first dedicated pixel, the second dedicated pixel, and the third dedicated pixel are configured to emit light having the same color, and the third shared pixel and the first dummy pixel are configured to emit light having different colors.

## Claims

### Claim 1

A display device comprising a rectangular pixel unit, the rectangular pixel unit comprising:
a first dot including a first shared pixel and a first dedicated pixel, the first dot disposed at a first edge of the rectangular pixel unit;
a second dot disposed closest to the first dot in a first direction and including a second shared pixel and a second dedicated pixel;
a third dot disposed in the first direction from the second dot and including a third shared pixel and a third dedicated pixel; and
a first dummy dot disposed closest to the third dot in the first direction and including a first dummy pixel, the first dummy dot disposed at a second edge of the rectangular pixel unit,
wherein:
the first shared pixel and the second shared pixel are configured to emit light having different colors;
the first dedicated pixel, the second dedicated pixel, and the third dedicated pixel are configured to emit light having the same color;
the third shared pixel and the first dummy pixel are configured to emit light having different colors;
a light-emitting area of the first shared pixel is smaller than a light-emitting area of the second shared pixel;
a light-emitting area of the first dummy pixel is smaller than a light-emitting area of the third shared pixel;
the second shared pixel is connected to, among a plurality of data lines, only a single data line;
the first dummy pixel is configured to display an input grayscale value provided to the third dot; and
a first proportion of the input grayscale value of the third dot applied to an output grayscale value of the first dummy pixel is greater than a second proportion of an input grayscale value of the first dot applied to an output grayscale value of the second shared pixel.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the first dummy pixel is an outermost pixel in the first direction with respect to the first dot.

### Claim 3 (depends on 2)

The display device according to claim 2, wherein the rectangular pixel unit further comprises:
a fourth dot disposed in a second direction from the first dot and including a fourth shared pixel and a fourth dedicated pixel;
a fifth dot disposed in the first direction from the fourth dot and in the second direction from the third dot, the fifth dot including a fifth shared pixel and a fifth dedicated pixel; and
a second dummy dot disposed closest to the fifth dot in the first direction and in the second direction from the first dummy dot, the second dummy dot including a second dummy pixel, and
wherein the fifth shared pixel and the second dummy pixel are configured to emit light having different colors.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein the second dummy pixel is an outermost pixel in the first direction with respect to the fourth dot.

### Claim 5 (depends on 4)

The display device according to claim 4, wherein:
the second dummy pixel is an outermost pixel in the second direction with respect to the first dummy dot; and
the fourth dedicated pixel is an outermost pixel in the second direction with respect to the first dot.

### Claim 6 (depends on 5)

The display device according to claim 5, wherein:
the first dummy dot and the second dummy dot are disposed at the second edge.

### Claim 7 (depends on 6)

The display device according to claim 6, wherein:
the first dot and the fourth dot are disposed at the first edge.

### Claim 8 (depends on 7)

The display device according to claim 7, wherein:
the first edge and the second edge are forms of straight lines parallel to each other.

### Claim 9 (depends on 8)

The display device according to claim 8, wherein:
the first dot, the second dot, the third dot, and the first dummy dot are disposed at a third edge of the rectangular pixel unit.

### Claim 10 (depends on 9)

The display device according to claim 9, wherein:
the fourth dot, the fifth dot, and the second dummy dot are disposed at a fourth edge of the rectangular pixel unit.

### Claim 11 (depends on 10)

The display device according to claim 10, wherein:
the third edge and the fourth edge are forms of straight lines parallel to each other.

### Claim 12 (depends on 11)

The display device according to claim 11, wherein:
the first edge and the third edge are perpendicular to each other; and
the second edge and the fourth edge are perpendicular to each other.

### Claim 13 (depends on 1)

The display device according to claim 1, wherein:
the light-emitting area of the first shared pixel is a half of the light-emitting area of the second shared pixel; and
the light-emitting area of the first dummy pixel is a half of the light-emitting area of the third shared pixel.

### Claim 14 (depends on 13)

The display device according to claim 13, wherein:
the light-emitting area of the first shared pixel has a shape symmetric to a shape of the light-emitting area of the first dummy pixel.

### Claim 15 (depends on 13)

The display device according to claim 13, wherein:
the light-emitting area of the second shared pixel has a diamond shape.

### Claim 16 (depends on 15)

The display device according to claim 15, wherein:
the light-emitting area of the first shared pixel has a half-diamond shape; and
the light-emitting area of the first dummy pixel has a half-diamond shape.

### Claim 17 (depends on 16)

The display device according to claim 16, wherein:
the light-emitting area of the first shared pixel has a shape symmetric to a shape of the light-emitting area of the first dummy pixel.

### Claim 18 (depends on 1)

The display device according to claim 1, wherein:
the first proportion is 1; and
the second proportion is 0.5.

### Claim 19 (depends on 1)

The display device according to claim 1, wherein a first output of a first amplifier connected to a first data line coupled to the first dummy pixel is less than a second output of a second amplifier connected to a second data line coupled to the second shared pixel.