Color filter substrate and electro-optical device, manufacturing method for color filter substrate and manufacturing method for electro-optical device, and electronic equipment

• US 7,411,642 B2
• Filed: 04/24/2007
• Issued: 08/12/2008
• Est. Priority Date: 07/13/2001
• Status: Expired due to Term

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Takizawa, Keiji, Nakano, Tomoyuki
• Primary Examiner(s): Duong; Thoi V
• Application Number:
  US11/789,143
• Publication Number:
  US 20070195242A1
• Time in Patent Office: 476 Days
• Field of Search: 349/114, 349/106, 349/110, 349/139, 349/113, 349/112, 349/138
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133555 Transflectors

Abstract

To provide a color filter substrate and transflective type electro-optical device capable of ensuring both brightness of reflective display and saturation of transmissive display. Also, to reduce the difference in color between reflective display and transmissive display. A reflective layer 211 having openings 211a is formed on a substrate 201, and subsequently, a transmissive layer 214 is partially formed, and upon these is formed a color filter 212 having colored layers 212r, 212g, and 212b. Thick portions 212TH provided to non-formation regions of the transmissive layer 214 are formed to the colored layer.

Claims

1. A color filter substrate, comprising:

a substrate;

a reflective layer disposed on said substrate, and having a transmitting portion essentially capable of transmitting light; and

a colored layer disposed so as to overlay at least said reflective layer in a planar manner, and having a thick portion and a convex portion;

wherein said reflective layer has a reflecting portion on the perimeter of said transmitting portion;

wherein said thick portion is disposed so as to overlay said transmitting portion in a planar manner;

wherein the thickness of said thick portion is greater than the sum of the thickness of a portion of said colored layer corresponding to said reflecting portion position and the thickness of said reflecting portion and;

wherein said convex portion projects in a direction opposite to said substrate and is disposed so as to overlay said transmitting portion in a planar manner.

2. A color filter substrate according to claim 1, wherein said transmitting portion is an opening provided on said reflective layer,

comprising a light transmitting layer essentially capable of transmitting light between said reflective layer excluding said opening and said colored layer.

3. A color filter substrate according to claim 2, wherein said transmitting layer has scattering functions for scattering light.

4. A color filter substrate according to claim 1, wherein said transmitting portion is an opening provided to said reflective layer, having a foundation layer between said reflective layer excluding said opening and said substrate.

5. A color filter substrate according to claim 4, wherein the surface of said foundation layer has patterned indentations, and wherein said reflective layer has minute patterned indentations for scattering light.

6. A color filter substrate according to claim 1, wherein a first colored layer disposed in a first pixel has a first color, and a second colored layer disposed in a second pixel adjacent to said first pixel has a second color different from said first color, and

wherein a portion of each of said first colored layer and said second colored layer overlaps each other in the region between said first pixel and said second pixel, and said portion of said first colored layer extends away from said substrate.

7. An electro-optical device, comprising:

an electro-optical layer containing electro-optical material;

a substrate supporting said electro-optical layer;

a reflective layer disposed on said substrate, and having a transmitting portion essentially capable of transmitting light;

a colored layer disposed so as to overlay at least said reflective layer in a planar manner, and having a thick portion and a convex portion;

wherein said reflective layer has a reflecting portion on the perimeter of said transmitting portion;

wherein said thick portion is disposed so as to overlay said transmitting portion in a planar manner;

wherein the thickness of said thick portion is greater than the sum of the thickness of a portion of said colored layer corresponding to said reflecting portion position and the thickness of said reflecting portion; and

wherein said convex portion projects toward said electro-optical layer and is disposed so as to overlay said transmitting portion in a planar manner.

8. The electro-optical device of claim 7 which further comprises:

a pair of opposed substrates, on substrate supporting the electro-optical material and the other substrate having the colored layer disposed thereon.

9. The electro-optical device of claim 7, wherein said transmitting portion is an opening provided on said reflective layer and comprises a light transmitting layer essentially capable of transmitting light between said reflective layer excluding said opening and said colored layer.

10. The electro-optical device of claim 9, wherein said transmitting layer has scattering functions for scattering light.

11. The electro-optical device of claim 7, wherein said transmitting portion is an opening provided to said reflective layer, having a foundation layer between said reflective layer excluding said opening and said substrate.

12. The electro-optical device of claim 11, wherein the surface of said foundation layer has patterned indentations, and wherein said reflective layer has minute patterned indentations for scattering light.

13. The electro-optical device of claim 7, wherein a first colored layer disposed in a first pixel has a first color, and a second colored layer disposed in a second pixel adjacent to said first pixel has a second color different from said first color, and

wherein a portion of each of said first colored layer and said second colored layer overlaps each other in the region between said first pixel and said second pixel, and said portion of said first colored layer extends away from said substrate.