Color filter substrate for liquid crystal display device and method for fabricating the same

1 . A color filter substrate comprising:

a substrate;

a plurality of black matrixes formed on the substrate;

a color filter layer including red, green, blue and white sub-color filter layers formed between the plurality of black matrixes, respectively;

a planarization layer formed on the color filter layer and having a step; and

first and second spacers formed on the planarization layer, wherein the first spacer maintains a cell gap and the second spacer compensates for the step of the planarization layer.

2 . The color filter substrate according to claim 1 , wherein the substrate is formed of a transparent insulating material.

3 . The color filter substrate according to claim 1 , wherein the second spacer is formed on the white sub-color filter.

4 . The color filter substrate according to claim 1 , wherein the first and second spacers are formed of a transparent material.

5 . The color filter substrate according to claim 3 , wherein the second spacer includes edges that are disposed over the black matrixes.

6 . A method for fabricating a color filter substrate, the method comprising:

forming a plurality of black matrixes on a substrate;

forming a color filter layer including red, green and blue sub-color filter layers between the plurality of black matrixes;

forming a planarization layer on an entire surface of the substrate including the sub-color filter layers, and simultaneously forming a white sub-color filter layer on the substrate, wherein the planarization layer includes a step; and

forming a first spacer and a second spacer on the planarization layer wherein the first spacer maintains a cell gap and a second spacer compensates for the step.

7 . The method according to claim 6 , wherein the first and second spacers are simultaneously formed.

8 . The color filter substrate according to claim 6 , wherein the second spacer is formed on the white sub-color filter layer.

9 . The method according to claim 6 , wherein the first and second spacers are formed of a transparent material.

10 . The method according to claim 6 , wherein the white sub-color filter layer is formed during the step of forming the planarization layer.

11 . The method according to claim 8 , wherein the second spacer includes edges that are disposed over the black matrixes.

12 . A method for fabricating a color filter substrate, the method comprising:

forming a plurality of black matrixes on a substrate, wherein the plurality of black matrixes includes grid spaces;

forming a color filter layer including red, green and blue sub-color filter layers in the grid spaces of the plurality of black matrixes;

forming a planarization layer on an entire surface of the substrate, wherein a first part of the planarization layer is formed on the red, green and blue sub-color filter layers, a second part of the planarization layer is formed as a white sub-color filter layer on the substrate, a step is formed between the first and second parts of the planarization layer;

forming a first spacer on the first part of the planarization layer to maintain a cell gap; and

forming a second spacer on the second part of the planarization layer to compensate the step.

13 . The method according to claim 12 , wherein the first and second spacers are simultaneously formed.

14 . The color filter substrate according to claim 12 , wherein the first and second spacers are formed of a transparent material.

15 . The method according to claim 12 , wherein the second spacer includes edges that are disposed over the black matrixes.