# US 10,319,320 B2 · Display device and method of driving the same

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- Number: US 10,319,320 B2
- Document ID: US10319320B2
- Status: Granted
- Kind: B2
- Application number: 15/053,561
- Filed: 2016-02-25
- Published: 2017-01-19
- Granted: 2019-06-11
- Earliest claimed: 2015-07-13
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Jung-Won Kim; Jae-Sung Bae
- Web page: https://patentgrep.com/patent/US10319320B2

## CPC

- G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)}
- 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 includes a memory, a gray voltage generator, a signal controller, a data driver and a display panel, where the pixels are driven by a first driving data comprising first data which arranges a first image based on the first gamma curve and a second image based on the second gamma curve to each pixel, and a second driving data comprising second data which arranges the first image and the second image to each pixel with a different arrangement as the first data.

## Claims

### Claim 1

A display device, comprising:
a memory configured to store gamma data corresponding to a plurality of gamma curves including a first gamma curve and a second gamma curve;
a gray voltage generator configured to generate a plurality of gray voltages based on the gamma data;
a signal controller configured to receive an input image signal;
a data driver configured to receive the input image signal from the signal controller and convert the input image signal into a data voltage using the gray voltages; and
a display panel comprising a plurality of pixels configured to receive the data voltage and display an image during a frame set,
wherein the plurality of pixels are first driven in a first frame of the frame set by first driving data comprising first data which assigns a first image based on the first gamma curve to at least a first of the plurality of pixels and a second image based on the second gamma curve to at least a second of the plurality of pixels, and then driven in a second frame of the frame set by second driving data comprising second data which assigns the first image to at least the second of the plurality of pixels and the second image to at least the first of the plurality of pixels, and Wherein a plurality of transition frames are disposed between the first frame and the second frame,
wherein the pixels display an image on a frame set basis, and
wherein the first frame of the frame set is configured to display the first image to a first pixel and display the second image to a second pixel according to the first driving data;
the second frame of the frame set is configured to display the second image to the first pixel and display the first image to the second pixel according to the second driving data; and
the plurality of transition frames are configured to display a third image and a fourth image to the first pixel and the second pixel, respectively, wherein a luminance of the third image is equal to or less than the luminance of the first image, and a luminance of the fourth image is equal to or greater than the luminance of the second image.

### Claim 2 (depends on 1)

The display device of claim 1, wherein a gamma value of the third image is defined by the following expression:
(x−n)/x×GH+n/x×GL, and
a gamma value of the fourth image is defined by the following expression:
n/x×GH+(x−n)/x×GL,
wherein the x is a number of the transition frames, the n is an order of the transition frames, the GH is a gamma value of the first image and the GL is a gamma value of the second image.

### Claim 3 (depends on 2)

The display device of claim 2, wherein the number of the transition frames is 60.

### Claim 4 (depends on 2)

The display device of claim 2, wherein the number of the transition frames is 120.

### Claim 5 (depends on 2)

The display device of claim 2, wherein the number of the transition frames is 240.

### Claim 6

A method of driving a display device comprising a memory configured to store gamma corresponding to a plurality of gamma curves including a first gamma curve and a second gamma curve, a gray voltage generator configured to generate a plurality of gray voltages based on the gamma data, a signal controller configured to receive an input image signal, a data driver configured to receive the input image signal from the signal controller and convert the input image signal into a data voltage using the gray voltages and a display panel comprising a plurality of pixels configured to receive the data voltages and display an image during a frame set,
the method comprising:
displaying an image in a first frame of the frame set according to first driving data comprising first data which assigns a first image based on the first gamma curve to at least a first of the plurality of pixels and a second image based on the second gamma curve to at least a second of the plurality of pixels; and
displaying an image in a second frame of the frame set according to second driving data comprising second data which assigns the first image to at least the second of the plurality of pixels and the second image to at least the first of the plurality of pixels, wherein a plurality of transition frames are disposed between the first frame and the second frame, wherein a luminance of the first image is equal to or greater than a luminance of the second image, and wherein the pixels display an image on a frame set basis, and
the first frame of the frame set is to display the first image to a first pixel and display the second to a second pixel according to the first driving data;
the second frame of the frame set is configured to display the second image to the first pixel and display the first to the second pixel according to the second driving data; and
the plurality of transition frames are configured to display a third image and fourth image to the first pixel and the second pixel, a luminance of the third image and the fourth image is equal to or less than the luminance of the first image, and equal to or greater than the luminance of the second image.

### Claim 7 (depends on 6)

The method of claim 6, wherein a gamma value of the third image is defined by the following expression:
(x−n)/x×GH+n/x×GL, and
a gamma value of the fourth image is defined by the following expression:
n/x×GH+(x−n)/x×GL,
wherein the x is a number of the transition frames, the n is an order of the transition frames, the GH is a gamma value of the first image and the GL is a gamma value of the second image.

### Claim 8 (depends on 7)

The method of claim 7, wherein the number of the transition frames is 60.

### Claim 9 (depends on 7)

The method of claim 7, wherein the number of the transition frames is 120.

### Claim 10 (depends on 7)

The method of claim 7, wherein the number of the transition frames is 240.