Display device and driving method thereof

Patent metadata

Field	Value
Publication number	US-9870727-B2
Application number	US-201514701411-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	Nov 28, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A display device includes: a display unit including pixels including a first color subpixel at a left upper end, a second color subpixel at a left lower end, and a third color subpixel at a right side; a data converter to convert first color, second color, and third color unit input data into first color, second color, and third color unit adapted data; and a driver to apply an image signal to the pixel based on the adapted data, the data converter generating unit adapted data using first unit input data of a target subpixel and second unit input data of another subpixel adjacent the target subpixel along a direction, the direction being: an up direction when the target subpixel is the first color subpixel; a down direction when the target subpixel is the second color subpixel; and a right direction when the target subpixel is the third color subpixel.

First claim

What is claimed is:

1. A display device, comprising:
a display unit comprising a plurality of pixels that are contiguously arranged, each of the pixels comprising a first color subpixel at a left upper end, a second color subpixel at a left lower end, and a third color subpixel at a right side, which are arranged in an S-stripe form;
a data converter configured to convert first color, second color, and third color unit input data portions of input data into first color, second color, and third color unit adapted data; and
a driver configured to apply an image signal to the pixel based on the adapted data,
wherein the data converter is configured to generate unit adapted data in accordance with first unit input data corresponding to a target subpixel and second unit input data corresponding to another subpixel adjacent to the target subpixel along a specific direction, the specific direction being:
an up direction when the target subpixel is the first color subpixel;
a down direction when the target subpixel is the second color subpixel; and
a right direction when the target subpixel is the third color subpixel.

2. The display device of claim 1 , wherein:
when a value of the first unit input data is Di1, a value of the second unit input data is Di2, and a value of the unit adapted data is Do, an equation below is satisfied,
Do=a*Di 1+(1− a )* Di 2

in this case, Di1, Di2, and Do are data values of a luminance level, and
a is a real number within a range of ½<a<¾.

3. The display device of claim 2 , wherein:
a is ⅔.

4. The display device of claim 1 , wherein:
the data converter is configured to apply a rendering filter having a matrix equation as shown below to convert data corresponding to the first color subpixel,

[

0

1
/
3

0

0

2
/
3

0

0

0

0

]

a rendering filter having a matrix equation as shown below to convert data corresponding to the second color subpixel, and

[

0

0

0

0

2
/
3

0

0

1
/
3

0

]

a rendering filter having a matrix equation as shown below to convert data corresponding to the third color subpixel

[

0

0

0

0

2
/
3

1
/
3

0

0

0

]

⁢

.

5. The display device of claim 1 , further comprising:
a boundary detection unit,
wherein when a difference between values of the unit input data corresponding to the plurality of adjacent subpixels is greater than or equal to a threshold value, the boundary detection unit detects the plurality of adjacent subpixels as a boundary part of an image, and
wherein the data converter is configured to convert only the input data corresponding to the boundary part into the adapted data.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Min-Tak

Classifications

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title

• G09G2340/0457

  Improvement of perceived resolution by subpixel rendering · CPC title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title