Structure of color elements for a color filter
View Patent ↗A structure of color elements for a color filter. At least a first, second, and third color element are disposed in a delta-type arrangement. An overlapping portion is formed between two adjacent color elements to serve as a light-blocking area. At least one color element is octagonal, having four straight sides and four beveled sides.
1. A structure of color elements for a color filter, comprising:
at least a first color element, a second color element adjacent to the first color elements, and a third color element adjacent to first and second color elements, in which an overlap is formed between each two adjacent color elements to serve as a light-blocking area preventing light leakage between the color elements;
wherein at least one color element substantially comprises a polygonal portion having at least five sides, and
wherein each of the first color element, the second color element, and the third color element comprises a gradual rim between two adjacent color elements and a steep rim among the first color element, the second color element and the third color element.
2. The structure of color elements for a color filter as claimed in claim 1 , wherein at least one color element is substantially an octagon, having four straight sides and four beveled sides.
3. The structure of color elements for a color filter as claimed in claim 2 , wherein a length of the beveled side is less than 8 μm and greater than 0.
4. The structure of color elements for a color filter as claimed in claim 2 , wherein an included angle between each beveled side and each straight side is less than 90° and greater than 0°.
5. The structure of color elements for a color filter as claimed in claim 2 , wherein an overlap at the rim of each color element is within a range of approximately 0˜10 μm.
6. A photo mask for fabrication the color filter as claimed in claim 1 , comprising:
a plurality of mask elements, each mask element comprising a first opening, wherein the first opening is a polygonal opening with at least five sides.
7. The photo mask for fabrication a color filter as claimed in claim 6 , wherein the mask element further comprises a plurality of second openings disposed in a beveled end-point region of the polygonal first opening.
8. The photo mask for fabrication a color filter as claimed in claim 7 , wherein the first opening is an octagonal first opening, and the second openings are disposed in four beveled end-point regions of the octagonal first opening.
9. The photo mask as claimed in claim 8 , wherein the second openings are not connected to the first opening.
10. The photo mask as claimed in claim 9 , wherein the second openings are a plurality of circular openings.
11. The photo mask as claimed in claim 9 , wherein the second openings are a plurality of strip-shaped openings.
12. The photo mask as claimed in claim 8 , wherein the second openings are connected to the first opening.
13. The photo mask as claimed in claim 12 , wherein the second openings are a plurality of strip-shaped openings.
14. The photo mask as claimed in claim 12 , wherein the second openings are saw-toothed profile openings.
15. The photo mask as claimed in claim 12 , wherein the second openings are faceted profile openings.
16. A method for fabricating the color filter as claimed in claim 1 , comprising:
providing a first substrate comprising a plurality of pixel regions, each pixel region further comprising three sub-pixel regions;
sequentially forming a first color element, a second color element, and a third color element layer using a photo mask on each sub-pixel region of the first substrate;
wherein the photo mask comprises a plurality of mask elements, each mask element comprising a first opening, wherein the first opening is a polygonal opening with at least five sides.
17. The method as claimed in claim 16 , wherein the mask element further comprises a plurality of second openings disposed in a beveled end-point region of the polygonal first opening.
18. The method as claimed in claim 17 , wherein the first opening is an octagonal first opening, and the second openings are disposed in four beveled end-point regions of the octagonal first opening.
19. The method as claimed in claim 18 , wherein the second openings are not connected to the first opening.
20. The method as claimed in claim 19 , wherein the second openings are a plurality of circular openings.
21. The method as claimed in claim 19 , wherein the second openings are a plurality of strip-shaped openings.
22. The method as claimed in claim 18 , wherein the second openings are connected to the first opening.
23. The method as claimed in claim 22 , wherein the second openings are a plurality of strip-shaped openings.
24. The method as claimed in claim 22 , wherein the second openings are saw-toothed profile openings.
25. The method as claimed in claim 22 , wherein the second openings are faceted profile openings.
26. A structure of color elements for a color filter, comprising:
at least a first color element, a second color element adjacent to the first color element, and a third color element adjacent to the first and second color elements, in which an overlap is formed between a side of each two adjacent color elements to serve as a light-blocking area preventing light leakage between the overlapping sides;
wherein at least the first color element substantially comprises a polygonal first portion having at least five sides, and a plurality of spatially separated second portions disposed in a beveled end-point region of the polygonal first portion adjacent to the second and third color elements, wherein the separation between the second portions defines a plurality of gaps in the material continuity of the first color element.
27. A structure of color elements for a color filter as claimed in claim 26 , wherein the polygonal first portion of the color element is an octagonal first portion, and the second portions are disposed in four beveled end-point regions of the octagonal first portion.
28. A structure of color elements for a color filter as claimed in claim 27 , wherein the second portions are not connected to the octagonal first portion.
29. The structure of color elements for a color filter as claimed in claim 28 , wherein the second portions of the color element comprises a plurality of circular portions.
30. The structure of color elements for a color filter as claimed in claim 28 , wherein the second portions of the color element comprises a plurality of strip-shaped portions.
31. A structure of color elements for a color filter as claimed in claim 27 , wherein the second portions are connected to the octagonal first portion, such that the profile of the first color element at the beveled end-point region of the polygonal first portion includes a plurality of indentations defined by the claps between the second portions.
32. The structure of color elements for a color filter as claimed in claim 31 , wherein the second portions of the color element comprises a plurality of strip-shaped portions.
33. The structure of color elements for a color filter as claimed in claim 31 , wherein the second portions of the color element are of a saw-toothed profile.
34. The structure of color elements for a color filter as claimed in claim 31 , wherein the second portions of the color element are of a faceted profile.
35. The structure of color elements for a color filter as claimed in claim 27 , wherein an overlap at the rim of each color element is within a range of approximately 0˜10 μm.
36. A structure of color elements for a color filter as claimed in claim 26 , wherein the second portions are arranged to reduce an open area of a non-overlapping portion between the first, second and third color elements.