Color filter substrate and method for fabricating thereof
A method of fabricating a color filter substrate of an LCD is disclosed. By forming the color filter layer from a hydrophobic material, a fluid black matrix material deposited on the surface of the substrate including the color filter layer flows from the surface of the color filter layer and accumulates between sub-color filters of the color filter layer. The black matrix material is then hardened, permitting the black matrix to be formed between the sub-color filters but not on the color filter layer. Accordingly, the number of mask processes for forming a black matrix is reduced. Further, since the black matrix is only disposed between the sub-color filters, an overcoat layer to eliminate the step difference due to the color filters need not be formed.
1. A method for fabricating a color filter, the method comprising:
forming color filter layers on a substrate;
forming an organic layer between the color filter layers; and
forming a black matrix by hardening the organic layer, wherein the black matrix is formed on the substrate without using a mask.
2. A method for fabricating a color filter, the method comprising:
forming hydrophobic color filter layers on a substrate;
forming an organic layer between the hydrophobic color filter layers; and
forming a black matrix by hardening the organic layer.
3. The method of claim 2 , wherein forming the color filter layers comprises:
forming a first sub-color filter layer;
forming a second sub-color filter layer separated from the first sub-color filter layer; and
forming a third sub-color filter layer separated from both the first sub-color filter layer and the second sub-color filter layer.
4. The method of claim 2 , wherein forming the black matrix comprises hardening the organic layer by heating.
5. The method of claim 2 , further comprising forming a common electrode on the substrate.
6. The method of claim 5 , further comprising forming the common electrode in contact with the black matrix and color filter layers.
7. The method of claim 2 , wherein the black matrix and color filter layers are planar when initially provided on the substrate.
8. The method of claim 2 , further comprising:
forming a spacer on the substrate; and
forming an alignment layer on the spacer.
9. The method of claim 2 , wherein the color filter layer includes at least one of polypropylene oxide, polybutylene oxide, polytetramethylene oxide, polylactide, polyglycollide, lactide-glycollide copolymer, and polybutylade.
10. The method of claim 2 , further comprising providing the organic layer over substantially an entire surface of the substrate and permitting the organic layer to flow from a surface of the color filter layer to between the color filter layer.
11. The method of claim 2 , wherein the black matrix is formed on the substrate without using a mask.
12. A color filter substrate comprising:
a hydrophobic color filter layer including sub-color filter layers on a substrate;
a black matrix between the sub-color filter layers, the black matrix containing an organic layer;
a common electrode in contact with the black matrix and sub-color filter layers; and
an alignment layer on the sub-color filter layers and the black matrix layer.
13. The substrate of claim 12 , wherein the sub-color filter layers include Red, Green and Blue sub-color filters separated from each other.
14. The substrate of claim 12 , wherein the black matrix and sub-color filter layers are planar when initially provided on the substrate.
15. The substrate of claim 12 , further comprising a spacer on the substrate.
16. A method for fabricating a color filter, the method comprising:
forming hydrophobic color filter layers on a substrate; providing a fluid material between the color filter layers; and
forming a black matrix by hardening the fluid material.
17. The method of claim 16 , wherein forming the black matrix comprises hardening the fluid material by heating.
18. The method of claim 16 , further comprising forming a common electrode on the substrate.
19. The method of claim 18 , wherein the common electrode is in contact with the black matrix and color filter layers.
20. The method of claim 16 , wherein the black matrix and color filter layers are planar when initially provided on the substrate.
21. The method of claim 16 , further comprising:
forming a spacer on the substrate; and
forming an alignment layer on the spacer.
22. The method of claim 16 , wherein the color filter layer includes at least one of polypropylene oxide, polybutylene oxide, polytetramethylene oxide, polylactide, polyglycollide, lactide-glycollide copolymer, and polybutylade.
23. The method of claim 16 , further comprising providing the fluid material over substantially an entire surface of the substrate.
24. The method of claim 16 , wherein the fluid material is formed on the substrate without using a mask.
25. The method of claim 16 , wherein the fluid material flows across a surface of the color filter layers to between the color filter layers.
26. A substrate comprising:
a hydrophobic color filter layer including sub-color filter layers on the substrate;
a black matrix between the sub-color filter layers;
a common electrode in contact with the black matrix and sub-color filter layers; and
an alignment layer on the sub-color filter layers and the black matrix layer, wherein the hydrophobic sub-color filter layers are substantially uniform.
27. The substrate of claim 26 , further comprising a spacer on the common electrode.
28. The substrate of claim 27 , wherein the spacer is disposed above the black matrix between the alignment layer and the common electrode.
29. The substrate of claim 26 , wherein the black matrix and sub-color filter layers are planar.