Substrate for a liquid crystal display and a fabricating method thereof
View Patent ↗A substrate for a liquid crystal display includes a black matrix on a substrate having first, second, third and fourth sub-pixel regions, wherein the black matrix includes first, second, third and fourth openings corresponding to the first, second, third and fourth sub-pixel regions, respectively, first, second and third color filter patterns corresponding to the first, second and third openings, respectively, a first planarization layer on the first, second and third color filter patterns and filling the fourth opening, and a second planarization layer on the first planarization layer.
1. A substrate for a liquid crystal display (LCD), comprising:
a black matrix on a substrate having first, second, third and fourth sub-pixel regions, wherein the black matrix includes first, second, third and fourth openings corresponding to the first, second, third and fourth sub-pixel regions, respectively;
at least one dummy pattern in the fourth opening, wherein the at least one dummy pattern is made of the same material as the black matrix;
first, second and third color filter patterns corresponding to the first, second and third openings, respectively; and
a planarization layer on the first, second and third color filter patterns and filling the fourth opening,
wherein a total area of the dummy pattern is smaller than an area of the fourth opening excluding the dummy pattern.
2. The substrate according to claim 1 , wherein a surface of the planarization layer corresponding to the fourth opening is substantially equal to a surface of the planarization layer corresponding to the first, second and third openings.
3. The substrate according to claim 1 , wherein the planarization layer is made of transparent organic material.
4. The substrate according to claim 3 , wherein the transparent organic material includes acrylic.
5. The substrate according to claim 1 , wherein the first, second and third color filter patterns are made of red, green and blue color resins, respectively.
6. The substrate according to claim 1 , wherein a width of the at least one dummy pattern is thinner than that of the black matrix.
7. A fabricating method of a substrate for a liquid crystal display (LCD), comprising:
forming a black matrix on a substrate having first, second, third and fourth sub-pixel regions, wherein the black matrix includes first, second, third and fourth openings corresponding to the first, second, third and fourth sub-pixel regions, respectively;
forming at least one dummy pattern in the fourth opening, wherein the at least one dummy pattern is made of the same material as the black matrix;
forming first, second and third color filter patterns corresponding to the first, second and third openings, respectively; and
forming a planarization layer on the first, second and third color filter patterns, the planarization layer filling the fourth opening,
wherein a total area of the dummy pattern is smaller than an area of the fourth opening excluding the dummy pattern.
8. The method according to claim 7 , wherein a surface of the planarization layer corresponding to the fourth opening is substantially equal to a surface of the planarization layer corresponding to the first, second and third openings.
9. The method according to claim 7 , wherein the planarization layer is made of transparent organic material.
10. The method according to claim 9 , wherein the transparent organic material includes acrylic.
11. The method according to claim 7 , wherein the first, second and third color filter patterns are made of red, green and blue color resins, respectively.
12. The method according to claim 7 , wherein a width of the at least one dummy pattern is thinner than that of the black matrix.