Multi-Primary Color Display Device and Liquid Crystal Display Device

• US 20080316235A1
• Filed: 08/10/2005
• Published: 12/25/2008
• Est. Priority Date: 08/19/2004
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Okada, Yoshihiro, Nakamura, Kozo, Okazaki, Shoji, Nakamura, Kenji
• Granted Patent: US 7,876,339 B2
• Time in Patent Office: Days
• US Class Current: 345/694
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.

Claims

1. A display device displaying an image constituted by pixels each including sub-pixels of primary colors of n colors (n representing an integer of 4 or more),

wherein each of the pixels includes sub-pixels of m colors (m representing an integer of 3 or more, m<

n), and sub-pixels of (n−

m+1) colors among the n colors are included in one out of every (n−

m+1) pixels.

2. The display device according to claim 1,

wherein sub-pixels of (n−

m+1) colors having a small brightness ratio and/or a small difference in brightness among the n colors are included in one out of every (n−

m+1) pixels.

3. The display device according to claim 1,

wherein the pixels constituting the display device mainly include a pixel including a yellow (Y) sub-pixel.

4. The display device according to claim 3,

wherein the yellow (Y) sub-pixel is arranged in a central region of the pixel.

5. The display device according to claim 1,

wherein the pixels constituting the display device mainly include a pixel including a red (R) sub-pixel.

6. The display device according to claim 1,

wherein a sub-pixel of a color having a brightness closest to an average brightness in the pixel among the n colors is included in one out of every (n−

m+1) pixels.

7. The display device according to claim 1,

wherein the sub-pixels constituting the pixel are arranged in a stripe pattern.

8. The display device according to claim 1,

wherein (n−

m+1) or more different sub-pixel arrays are arranged in a lattice pattern.

9. The display device according to claim 1,

wherein the display device displays an image using five primary colors of red (R), green (G), blue (B), yellow (Y), and cyan (C),

each of the pixels constituting the display device includes sub-pixels of four colors, and

cyan (C) and green (G) are included in one out of every two pixels.

10. The display device according to claim 9,

wherein a pixel including cyan (C) and a pixel including green (G) are adjacently arranged.

11. The display device according to claim 9,

wherein each of the pixels constituting the display device includes sub-pixels arranged in a stripe pattern in order of red (R), yellow (Y), cyan (C), blue (B), or in order of red (R), yellow (Y), green (G), blue (B).

12. A liquid crystal display device comprising the display device of claim 1.