Image display device and method of displaying image

Patent metadata

Field	Value
Publication number	US-10672364-B2
Application number	US-201816230011-A
Country	US
Kind code	B2
Filing date	Dec 21, 2018
Priority date	Jul 22, 2014
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

An image display device includes an image display unit including first pixels each constituted of sub-pixels of three or more colors included in a first color gamut and second pixels each constituted of sub-pixels of three or more colors included in a second color gamut different from the first color gamut, the first pixels and the second pixels being arranged in a matrix and adjacent to each other; and a processing unit that determines an output of the sub-pixels included in each pixel of the image display unit corresponding to an input image signal. The processing unit determines an output of the sub-pixels included in the other one of the pixels based on part of components of an input image signal corresponding to one of the first pixel and the second pixel that are adjacent to each other.

First claim

What is claimed is:

1. An image display device comprising
an image display unit including:
a first pixel having sub-pixels including
a first sub-pixel having a first color,
a second sub-pixel having a second color, and
a third sub-pixel having a third color,
wherein the first color, the second color, the third color are included in a first color gamut that includes white; and

a second pixel having sub-pixels including
a fourth sub-pixel having a fourth color,
a fifth sub-pixel having a fifth color, and
a sixth sub-pixel having a sixth color, and
wherein the fourth color, the fifth color, the sixth color are included in a second color gamut that includes white and that is different from the first color gamut, and

a processing unit that determines an output of each of the subpixels in the first pixel and the second pixel based on an input image signal,
wherein
the first pixel and the second pixel are adjacent to each other, and
the processing unit is configured to:
receive the input image signal corresponding to the first color, the second color, and the third color as an input signal for the first pixel,
receive the input image signal corresponding to the first color, the second color, and the third color as an input signal for the second pixel, and
determine the output of each of the sub-pixels in the first pixel according to the input image signal for the first pixel and the input image signal for the second pixel,

each of the first pixel and the second pixel further includes a white sub-pixel,
the processing unit causes a white component that is convertible into white in components of the input image signal for the second pixel to be reflected in an output of the white sub-pixel of the second pixel,
the processing unit causes a non-white convertible component that is convertible into colors other than white in components of the input image signal for the second pixel to be reflected in an output of the sub-pixels other than the white sub-pixel of the second pixel, and
the processing unit causes the input image signal for the second pixel, from which the white component and the non-white convertible component are eliminated, to be reflected in an output of the first pixel.

2. The image display device according to claim 1 , wherein
the processing unit determines outputs of the first pixel and the second pixel so that the white sub-pixel is lit when there is a white convertible component that is convertible into white in components of the input image signal.

3. The image display device according to claim 2 , wherein an arrangement of the white sub-pixel in the first pixel is the same as an arrangement of the white sub-pixel in the second pixel.

4. An image display device comprising:
an image display unit including:
a first pixel having sub-pixels including
a first sub-pixel having a first color,
a second sub-pixel having a second color, and
a third sub-pixel having a third color,
wherein the first color, the second color, and the third color are included in a first color gamut that includes white; and

a second pixel having sub-pixels including
a fourth sub-pixel having a fourth color,
a fifth sub-pixel having a fifth color, and
a sixth sub-pixel having a sixth color,
wherein the fourth color, the fifth color, and the sixth color are included in a second color gamut that includes white and that is different from the first color gamut, and

a processing unit that determines an output of each of the subpixels in the first pixel and the second pixel based on an input image signal,
wherein
the first pixel and the second pixel are adjacent to each other, and
the processing unit is configured to:
receive the input image signal corresponding to the first color, the second color, and the third color as an input signal for the first pixel,
receive the input image signal corresponding to the first color, the second color, and the third color as an input signal for the second pixel, and
determine the output of each of the sub-pixels in the second pixel according to the input image signal for the first pixel and the input image signal for the second pixel,

each of the first pixel and the second pixel further includes a white sub-pixel,
the processing unit causes a white component that is convertible into white in components of the input image signal for the first pixel to be reflected in an output of the white sub-pixel of the first pixel,
the processing unit causes a non-white convertible component that is convertible into colors other than white in components of the input image signal for the first pixel to be reflected in an output of the sub-pixels other than the white sub-pixel of the first pixel, and
the processing unit causes a part of the white component for the first pixel or a part of the non-white component for the first pixel, to be reflected in an output of the second pixel.

5. The image display device according to claim 4 , wherein
the processing unit determines outputs of the first pixel and the second pixel so that the white sub-pixel is lit when there is a white convertible component that is convertible into white in components of the input image signal.

6. The image display device according to claim 5 , wherein an arrangement of the white sub-pixel in the first pixel is the same as an arrangement of the white sub-pixel in the second pixel.

Assignees

• Japan Display Inc

Inventors

• Nakanishi Takayuki
• Yata Tatsuya

Classifications

• G09G3/2003

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

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G09G3/2074

  using sub-pixels · 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