Color filter substrate and display device

• US 8,384,856 B2
• Filed: 03/30/2006
• Issued: 02/26/2013
• Est. Priority Date: 04/05/2005
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Itou, Akiko, Nakamura, Kohzoh, Ueki, Shun, Taguchi, Tokio
• Primary Examiner(s): CHIEN, LUCY P
• Application Number:
  US11/910,520
• Publication Number:
  US 20090141381A1
• Time in Patent Office: 2,525 Days
• Field of Search: None
• US Class Current: 349/106
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

A color filter substrate and a display device are each capable of reducing color separation of a straight line displayed with a mixed color and particularly color separation of a straight white line displayed with a mixed color on a black background. The color filter substrate is a color filter substrate including colored layers of at least four colors, arrayed inside a pixel region, wherein at least one pair of colored layers that are not next to each other when the colored layers of all the colors are arrayed in order of hue is adjacently arranged to each other inside the pixel region.

Claims

1. A display device comprising:

a backlight; and

a color filter substrate arranged to receive light from the backlight, the color filter substrate including colored layers of at least four colors, arrayed in a row inside of a pixel region;

wherein

the at least four colors include red, green, blue, and yellow;

specific physical properties of the yellow colored layer, the red colored layer, the green colored layer, and the blue colored layer are selected such that when light emitted from the backlight passes through the color filter substrate, the yellow color will have the highest luminance out of all of the at least four colors;

the colors arranged in the row are arranged such that the yellow color is adjacent to the red color, the red color is adjacent to the green color, and the green color is adjacent to the blue color; and

the green color has the second highest luminance out of all of the at least four colors.

2. The display device according to claim 1, wherein the luminance ratio between the right half of the pixel region and the left half of the pixel region is between 18:

15 and 15;

18.

3. The display device according to claim 1, wherein the colors arranged in the row are arranged such that the red color is adjacent to the green color, the green color is adjacent to the blue color, and the blue color is adjacent to the yellow color.

4. The display device according to claim 3, wherein the luminance ratio between the right half of the pixel region and the left half of the pixel region is between 18:

15 and 15;

18.

5. The display device according to claim 1, wherein the colors arranged in the row are arranged such that the blue color is adjacent to the yellow color, the yellow color is adjacent to the red color, and the red color is adjacent to the green color.

6. The display device according to claim 5, wherein the luminance ratio between the right half of the pixel region and the left half of the pixel region is between 18:

15 and 15;

18.

7. The display device according to claim 1, wherein the red color has the third highest luminance out of all of the at least four colors;

and the blue color has the fourth highest luminance out of all of the at least four colors.

8. The display device according to claim 1, wherein the specific physical properties correspond to respective thicknesses of the yellow colored layer, the red colored layer, the green colored layer, and the blue colored layer.

9. The display device according to claim 1, wherein the specific physical properties correspond to respective materials of the yellow colored layer, the red colored layer, the green colored layer, and the blue colored layer.