Color filter substrate and method for making the same, electro-optical device and method for making the same, and electronic apparatus

• US 6,740,457 B2
• Filed: 10/23/2002
• Issued: 05/25/2004
• Est. Priority Date: 10/31/2001
• Status: Expired due to Term

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Takizawa, Keiji
• Primary Examiner(s): McPherson, John A.
• Application Number:
  US10/278,561
• Publication Number:
  US 20030082465A1
• Time in Patent Office: 580 Days
• Field of Search: 430/7, 349/106
• US Class Current: 430/7
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence

Abstract

A color filter substrate 210 has pixel regions Pr, Pg, and Pb. Light shielding regions BR are respectively provided between these adjacent pixel regions. A red colored layer 213r is disposed on a substrate 211 inside the pixel region Pr. A green colored layer 213g is disposed on the substrate 211 inside the pixel region Pg. A blue colored layer 213b is disposed on the substrate 211 inside the pixel region Pb. Inside each of the light-shielding regions BR, a reflective light-shielding layer 212B is disposed on the substrate 211. The colored layers 213r, 213g, and 213b are stacked on the reflective light-shielding layer 212B.

Claims

1. A color filter substrate comprising:

a plurality of pixel regions;

a substrate having a reflective light-shielding layer which is arranged between the pixel regions; and

a plurality of colored layers of different colors each of which is arranged in the pixel region corresponding thereto,

wherein the plurality of colored layers of different colors are stacked in a plan view at a region between the pixel regions,

wherein the reflective light-shielding layer is entirely overlapped by the stacked colored layers in the region between the pixel regions.

2. The color filter substrate according to claim 1, wherein the reflective light-shielding layer is disposed on the substrate, and the plurality of colored layers of different colors are stacked in a plan view on the reflective light-shielding layer.

3. The color filter substrate according to claim 1, wherein a reflecting layer is formed inside a region where only one of the plurality of colored layers is provided, and the reflective light-shielding layer is either integral with the reflecting layer or composed of the same material as that of the reflecting layer.

4. The color filter substrate according to claim 1, wherein the colored layers stacked in a plan view at the reflective light-shielding layer comprise a red colored layer and a blue colored layer.

5. The color filter substrate according to claim 1, wherein only one colored layer of one color out of the plurality of colored layers is formed in a region disposed on one side of the reflective light-shielding layer, and only another colored layer of a different color out of the plurality of colored layers is formed in a region disposed on the other side of the reflective light-shielding layer,

wherein the colored layers of the one color and the different color extend over the reflective light-shielding layer so as to be stacked.

6. A method for making a color filter substrate comprising a substrate, a plurality of pixel regions, a reflective light-shielding layer which is arranged between the pixel regions, and a plurality of colored layers of different colors each of which is arranged in the pixel region corresponding thereto, the method comprising:

a step of forming the plurality of colored layers of different colors so that the colored layers are stacked in a plan view at a region between the pixel regions and the reflective light-shielding layer is entirely overlapped by the stacked colored layers in the region between the pixel region.

7. The method for making the color filter substrate according to claim 6, further comprising a step of forming the reflective light-shielding layer on the substrate, wherein the colored layers of different colors are stacked in a plan view on the reflective light-shielding layer.

8. The method for making the color filter substrate according to claim 6, wherein a reflecting layer is formed inside a region where only one of the plurality of colored layers is provided, and the reflecting layer and the reflective light-shielding layer are simultaneously formed with the same material.

9. The method for making the color filter substrate according to claim 6, wherein the colored layers stacked in a plan view at the reflective light-shielding layer comprise a red colored layer and a blue colored layer.

10. The method for making the color filter substrate according to claim 6, wherein only one colored layer of one color out of the plurality of colored layers is formed in a region on one side of the reflective light-shielding layer, and only another colored layer of a different color out of the plurality of colored layers is formed in a region on the other side of the reflective light-shielding layer,

wherein the colored layers of the one color and the different color extend over the reflective light-shielding layer so as to be stacked thereat.

11. An electro-optical device comprising:

a plurality of pixel regions;

an electro-optical layer having a reflective light-shielding layer which is arranged between the pixel regions; and

a plurality of colored layers of different colors each of which is arranged in the pixel region corresponding thereto,

wherein the plurality of colored layers of different colors are stacked in a plan view at a region between the pixel regions,

wherein the reflective light-shielding layer is entirely overlapped by the stacked colored layers in the region between the pixel regions.

12. The electro-optical device according to claim 11, further comprising a substrate, wherein the reflective light-shielding layer is disposed on the substrate, and the colored layers of different colors are stacked in a plan view on the reflective light-shielding layer.

13. The electro-optical device according to claim 11, wherein a reflecting layer is formed inside a region where only one of the plurality of colored layers is provided, and the reflective light-shielding layer is either integral with the reflecting layer, or composed of the same material as that of the reflecting layer.

14. The electro-optical device according to claim 11, wherein the colored layers stacked in a plan view at the reflective light-shielding layer comprise a red colored layer and a blue colored layer.

15. The electro-optical device according to claim 11, wherein only one colored layer of one color out of the plurality of colored layers is formed in a region disposed on one side of the reflective light-shielding layer, and only another colored layer of a different color out of the plurality of colored layers is formed in a region disposed on the other side of the reflective light-shielding layer,

wherein the colored layers of the one color and the different color extend over the reflective light-shielding layer so as to be stacked thereat.

16. The electro-optical device according to claim 11, wherein the reflective light-shielding layer is disposed at the plurality of colored layers stacked in a plan view, on the side thereof opposite to a viewing side of the device.

17. An electronic apparatus comprising the electro-optical device according to claim 11 and a controlling unit for controlling the electro-optical device.

18. A method for making an electro-optical device comprising a plurality of pixel regions, an electro-optical layer, a reflective light-shielding layer which is arranged between the pixel regions, and a plurality of colored layers of different colors each of which is arranged in the pixel region corresponding thereto, the method comprising:

a step of forming the plurality of colored layers of different colors so that the plurality of colored layers are stacked in a plan view at a region between the pixel regions,

and the reflective light-shielding layer is entirely overlapped by the stacked colored layers in the region between the pixel regions.

19. The method for making the electro-optical device according to claim 18, further comprising a step of forming the reflective light shielding layer on a substrate, wherein the colored layers of different colors are formed on the reflective light-shielding layer so that the colored layers of different colors are stacked in a plan view thereon.

20. The method for making the electro-optical device according to claim 18, wherein a reflecting layer is formed inside a region where only one of the plurality of colored layers is provided, and the reflecting layer and the reflective light-shielding layer are simultaneously formed with the same material.

21. The method for making the electro-optical device according to claim 18, wherein the colored layers stacked in a plan view at the reflective light-shielding layer comprise a red colored layer and a blue colored layer.

22. The method for making the electro-optical device according to claim 18, wherein only one color layer of one color out of the plurality of colored layers is formed in a region on one side of the reflective light-shielding layer, and only another colored layer of a different color out of the plurality of colored layers is formed in a region on the other side of the reflective light-shielding layer,

wherein the colored layers of the one color and the different color extend over the reflective light-shielding layer so as to be stacked.

23. A color filter substrate comprising:

a substrate having a reflective light-shielding layer; and

a plurality of colored layers of different colors,

wherein three of the colored layers are stacked in a plan view at the reflective light-shielding layer.

24. The color filter substrate according to claim 23, wherein three colored layers of different colors are stacked in a plan view at the reflective light-shielding layer.

25. A method for making a color filter substrate comprising a substrate, a reflective light-shielding layer, and a plurality of colored layers of different colors, the method comprising:

a step of forming the plurality of colored layers of different colors so that three of the colored layers are stacked in a plan view at the reflective light-shielding layer.

26. The method for making the color filter substrate according to claim 25, wherein three colored layers of different colors are stacked in a plan view at the reflective light-shielding layer.

27. An electro-optical device comprising:

an electro-optical layer having a reflective light-shielding layer; and

a plurality of colored layers of different colors,

wherein three of the colored layers are stacked in a plan view at the reflective light-shielding layer.

28. The electro-optical device according to claim 27, wherein three colored layers of different colors are stacked in a plan view at the reflective light-shielding layer.

29. A method for making an electro-optical device comprising an electro-optical layer, a reflective light-shielding layer, and a plurality of colored layers of different colors, the method comprising:

a step of forming the plurality of colored layers of different colors so that three of the colored layers are stacked in a plan view at the reflective light-shielding layer.

30. The method for making the electro-optical device according to claim 29, wherein three colored layers of different colors are stacked in a plan view at the reflective light-shielding layer.

31. A color filter substrate comprising:

a substrate having a reflective light-shielding layer;

a plurality of colored layers of different colors, the plurality of colored layers of different colors being stacked in a plan view at the reflective light-shielding layer; and

a reflecting layer formed inside a region where only one of the plurality of colored layers is provided,

wherein the reflective light-shielding layer is integral with the reflecting layer and composed of the same material as the reflecting layer.

32. The color filter substrate according to claim 31, wherein the reflecting layer extends across a majority of the region.

33. The color filter substrate according to claim 32, wherein the reflecting layer extends across an entirety of the region.

34. A method for making a color filter substrate comprising a substrate, a reflective light-shielding layer, a reflecting layer, and a plurality of colored layers of different colors, the method comprising:

a step of simultaneously forming with the same material the reflective light-shielding layer and the reflecting layer; and

a step of forming the plurality of colored layers of different colors so that the colored layers are stacked in a plan view at the reflective light-shielding layer,

wherein the reflecting layer is formed inside a region where only one of the plurality of colored layers is provided.

35. The method for making the color filter substrate according to claim 34, wherein the reflecting layer is formed to extend across a majority of the region.

36. The method for making the color filter substrate according to claim 35, wherein the reflecting layer is formed to extend across an entirety of the region.