Color filter panel and its fabrication method using back exposure

1. A fabrication method for a color filter panel of a display device, comprising:

forming a black matrix layer having a first opening on a substrate;

forming a color filter layer on the substrate;

forming an organic layer on the color filter layer and in the first opening; and

forming a spacer by back-exposing the organic layer to a light through the first opening using the black matrix and the color filter layer as a photomask.

2. A fabrication method for a color filter panel of a display device, comprising:

forming a black matrix layer having first opening on substrate;

forming color filter layer on the substrate;

forming an organic layer on the color filter layer and in the first opening;

forming a spacer by back-exposing the organic layer through the first opening; and

forming a second opening on the first opening and between parts of the color filter layer, wherein the spacer is formed by back-exposing the organic layer through the first and second openings.

3. The method of claim 2 , wherein a size of the second opening is equal to or greater than a size of the first opening.

4. The method of claim 1 , further comprising:

forming an overcoat layer on the color filter layer; and

forming an alignment layer on the spacer.

5. The method of claim 1 , further comprising:

forming a common electrode on the color filter layer; and

forming an alignment layer on the common electrode and the spacer.

6. The method of claim 1 , wherein the step of forming the spacer comprises:

back exposing the organic layer through the first opening; and

developing the exposed organic layer.

7. A fabrication method for a color filter panel of a display device, comprising:

forming a black matrix layer having a first opening on a substrate;

forming color filter layer on the substrate;

forming an organic layer on the color filter layer and in the first opening; and

forming a pacer by back-exposing the organic layer through the first opening; and

wherein in the step of forming the color filter layer, the color filter layer includes an ultraviolet ray absorbent material.

8. A fabrication method for a color filter panel of a display device, comprising:

forming a black matrix layer having first opening on a substrate;

forming a color filter layer on the substrate;

forming an organic layer on the color filter layer and in the first opening; and

forming a spacer by back-exposing the organic layer through the first opening; and

wherein in the step of forming the spacer, the back-exposing is performed by using a glass filter.

9. The method of claim 8 , wherein the glass filter blocks a wavelength of at least 360 nm.

10. The method of claim 5 , wherein the spacer is formed directly on the common electrode.

11. The method of claim 6 , wherein the spacer is formed directly on a common electrode.