Image display device and method of displaying image

Patent metadata

Field	Value
Publication number	US-9653041-B2
Application number	US-201514805695-A
Country	US
Kind code	B2
Filing date	Jul 22, 2015
Priority date	Jul 22, 2014
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

An image display device comprises an image display unit including first pixels and second pixels arranged in a staggered manner, the first pixels including sub-pixels arranged in a matrix in a first color gamut and second pixels including sub-pixels arranged in a matrix in a second color gamut different from the first color gamut; and a processing unit that determines an output of the sub-pixels corresponding to an input image signal. When sub-pixels including same color component are continuously lit in a straight line and there is a difference between outputs from adjacent sub-pixels including the same color component, the processing unit determines the output of the sub-pixels in the first pixel based on the first component after an adjustment component is eliminated, and determines the output of the sub-pixels included in the second pixel based on the second component and the adjustment component.

First claim

What is claimed is:

1. An image display device comprising:
an image display unit having a plurality of pixels including
a first pixel constituted of sub-pixels of four colors included in a first color gamut, and
a second pixel constituted of sub-pixels of four colors at least one color of which is different from the four colors of the sub-pixels in the first pixel, the four colors of the sub-pixels in the second pixel being included in a second color gamut different from the first color gamut,
wherein the first pixel is one of a first plurality of repeated pixels, the second pixel is one of a second plurality of repeated pixels, the first plurality of repeated pixels and the second plurality of repeated pixels are arranged in a staggered manner,

and the sub-pixels are arranged in a matrix; and
a processing unit that determines an output of each of the pixels corresponding to an input image signal,
wherein
when the processing unit determines that sub-pixels including a common color component are lit in a continuous straight line and that sub-pixels adjacent to the sub-pixels in the continuous straight line are not lit, in a condition that an output of the first pixel is set based on a first component as components of the input image signal corresponding to the first pixel and that an output of the second pixel is set based on a second component as components of the input image signal corresponding to the second pixel, the common color component being one of a red component, a green component, or a blue component and included in the first component of the first pixel and the second component of the second pixel,
the processing unit determines:
the output of the first pixel based on the first component from which an adjustment component is eliminated, the adjustment component being at least a part of the first component and including the common color component; and
the output of the second pixel based on the second component and the adjustment component.

2. The image display device according to claim 1 , wherein the adjustment component corresponds to a half of the common color component in the first component.

3. The image display device according to claim 1 , wherein three colors among the colors of the sub-pixels included in the second pixel are complementary colors of three colors among the colors of the sub-pixels included in the first pixel.

4. The image display device according to claim 3 , wherein the three colors among the colors of the sub-pixels included in the first pixel correspond to red, green, and blue.

5. The image display device according to claim 1 , wherein
the first pixel and the second pixel each include a white sub-pixel, and
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.

6. A method of displaying an image with an image display device comprising: an image display unit having a plurality of pixels including a first pixel constituted of sub-pixels of four colors included in a first color gamut and a second pixel constituted of sub-pixels of four colors at least one color of which is different from the colors of the sub-pixels in the first pixel, the colors of the sub-pixels in the second pixel being included in a second color gamut different from the first color gamut, wherein the first pixel is one of a first plurality of repeated pixels, the second pixel is one of a second plurality of repeated pixels, the first plurality of repeated pixels and the second plurality of repeated pixels are arranged in a staggered manner, and the sub-pixels are arranged in a matrix; and a processing unit that determines an output of each of the pixels corresponding to an input image signal, the method comprising:
when determining, by the processing unit, that sub-pixels including a common color component are lit in a continuous straight line and that sub-pixels adjacent to the sub-pixels in the continuous straight line are not lit, in a condition that an output of the first pixel is set based on a first component as components of an input image signal corresponding to the first pixel and that an output of the second pixel is set based on a second component as components of an input image signal corresponding to the second pixel, the common color component being one of a red component, a green component, a blue component and included in the first component of the first pixel and the second component of the second pixel,
determining, by the processing unit, the output of the first pixel based on the first component from which an adjustment component is eliminated, the adjustment component being at least a part of the first component and including the common color component; and
determining, by the processing unit, the output of the second pixel based on the second component and the adjustment component.

Assignees

• Japan Display Inc

Inventors

• Nakanishi Takayuki
• Yata Tatsuya

Classifications

• G09G2340/06

  Colour space transformation · CPC title

• G09G5/04

  using circuits for interfacing with colour displays · CPC title

• G09G3/3225

  using an active matrix · CPC title

• G09G3/2074

  using sub-pixels · CPC title

• G09G2310/0232

  Special driving of display border areas · CPC title