Transflective display device

• US 7,952,662 B2
• Filed: 03/28/2006
• Issued: 05/31/2011
• 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: Nakamura, Kohzoh, Taguchi, Tokio, Ueki, Shun, Itou, Akiko
• Primary Examiner(s): Nelms; David
• Assistant Examiner(s): Chien; Lucy P
• Application Number:
  US11/910,706
• Publication Number:
  US 20090128752A1
• Time in Patent Office: 1,890 Days
• Field of Search: None
• US Class Current: 349/114
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

A transflective display device capable of suppressing white balance from shifting to yellow includes filters of R, G, B, and Y, and a region corresponding to a reflective member in the Y filter is covered with a BM. Therefore, filters used in the reflective display are limited to three colors of R, G, and B, and thereby white balance can be prevented from shifting to yellow.

Claims

1. A transflective display device comprising:

transmissive regions displaying an image by transmitting light of a backlight;

reflective regions displaying an image by reflecting surrounding light; and

a color filter including a plurality of different filters having different colors being arranged in both the transmissive regions and the reflective regions;

wherein a number of the different colors of the different filters in the transmissive regions is different from a number of the different colors of the different filters in the reflective regions;

wherein the color number of the filters in the transmissive regions is larger than the color number of the filters in the reflective regions.

2. The transflective display device according to claim 1, wherein the color number of the filters in the transmissive regions is 4 and the color number of the filters in the reflective regions is 3.

3. The transflective display device according to claim 2,

wherein the filters in the transmissive regions include a red filter, a green filter, a blue filter, and a yellow filter;

and the filters in the reflective regions are a red filter, a green filter, and a blue filter.

4. A transflective display device comprising:

transmissive regions displaying an image by transmitting light of a backlight;

reflective regions displaying an image by reflecting surrounding light; and

a color filter including filters of a plurality of colors;

wherein the filters in the transmissive regions include a red filter, a green filter, a blue filter, and a yellow filter;

the filters in the reflective regions include a red filter, a green filter, and a blue filter; and

in a pixel including the yellow filter in the transmissive region, a reflective member arranged to reflect surrounding light is not formed.

5. A transflective display device arranged to perform transmissive display to display an image by transmitting light of a backlight and to perform reflective display to display an image by reflecting surrounding light, the transflective display device comprising:

a color filter including a plurality of different filters having different colors being arranged in both a transmissive display area and a reflective display area;

wherein a number of the different colors of the different filters used for the transmissive display area is different from a number of the different colors of the different filters used for the reflective display area;

wherein the color number of the filters used for the transmissive display area is larger than the color number of the filters used for the reflective display area.

6. The transflective display device according to claim 5, wherein the filters used for the transmissive display area include a red filter, a green filter, a blue filter, and a yellow filter;

and the filters used for the reflective display area are a red filter, a green filter, and a blue filter.