Electro-optical device having a color filter having color layers with different hues

• US 7,932,973 B2
• Filed: 05/09/2007
• Issued: 04/26/2011
• Est. Priority Date: 05/30/2006
• Status: Expired due to Fees

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Wachi, Reiko
• Primary Examiner(s): Robinson; Mark A
• Assistant Examiner(s): Mooney; Michael P
• Application Number:
  US11/746,114
• Publication Number:
  US 20070279557A1
• Time in Patent Office: 1,448 Days
• Field of Search: None
• US Class Current: 349/108
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

Abstract

An electro-optical device includes a plurality of subpixel regions forming a display field and a color filter including a plurality of color layers of which at least one is of an additive primary color. The color layers have different color hues and at least two of the color layers are arranged in at least one of the subpixel regions so as not to overlap with each other in plan view. A method for manufacturing the electro-optical device includes forming the color layers such that at least two of the color layers are arranged in at least one of the subpixel regions so as not to overlap with each other in plan view. An electronic apparatus includes the electro-optical device.

Claims

1. An electro-optical device comprising:

a plurality of subpixel regions forming a display field;

each subpixel region including a reflective section and a transmissive section;

each subpixel region including a color filter including a first color layer having a first primary color hue selected from the group consisting of red, green, and blue formed in both the reflective section and the transmissive section; and

each subpixel region including second and third color layers that do not overlap the first color layer in plan view, the second and third color layers each having a second and third primary color hue selected from the group consisting of red, green, and blue,

wherein the second primary color layer is formed in the reflective section and the third primary color layer is formed in the transmissive section,

the second and third primary color hues each being different from the first primary color hue, and

the second and third primary colors being different from each other.

2. The electro-optical device according to claim 1, wherein at least one of the subpixel regions has an uncolored zone.

3. The electro-optical device according to claim 1, wherein a thickness of the color layers in the transmissive section is greater than a thickness of the color layers in the reflective section.

4. The electro-optical device according to claim 1, wherein a plurality of second color layers are formed in the transmissive section and a plurality of third color layers are formed in the reflective section.

5. An electronic apparatus including the electro-optical device according to claim 1.