Color filter substrate for liquid crystal display device and fabricating method thereof
View Patent ↗A color filter substrate for a liquid crystal display device includes: a substrate; red, green and blue sub-color filters made of a transcription film on the substrate and spaced apart from each other; a black matrix on the red, green and blue sub-color filters; an overcoat layer on the black matrix; and a common electrode overcoat layer.
1. A color filter substrate for a liquid crystal display device, comprising:
a substrate;
a transcription film on the substrate having red, green and blue sub-color filters spaced apart from each other wherein each of the red, green and blue sub-color filters has a substantially jagged indented edge portion;
a black matrix on the red, green and blue sub-color filters;
an overcoat layer on the black matrix; and
a common electrode on the overcoat layer,
wherein the black matrix overlaps an upper surface of the sub-color filters.
2. The substrate according to claim 1 , wherein each of the red, green and blue sub-color filters is a vacuum-pressure attached transcription film attached to the substrate.
3. The substrate according to claim 1 , wherein the black matrix is in a space between the adjacent sub-color filters.
4. The substrate according to claim 1 , wherein the black matrix includes a photosensitive organic material.
5. The substrate according to claim 4 , wherein the photosensitive organic material is one of a photosensitive resin and an epoxy resin including pigment.
6. The substrate according to claim 1 , wherein the black matrix entirely covers the substantially jagged indented edge portion.
7. The substrate according to claim 6 , wherein the black matrix has a width of about 15 μm to about 30 μm.
8. A fabricating method of a color filter substrate for a liquid crystal display device, comprising:
forming red, green and blue sub-color filters on a substrate using a thermal imaging method, the red, green and blue sub-color filters being spaced apart from each other;
forming a black matrix on the red, green and blue sub-color filters;
forming an overcoat layer on the black matrix; and
forming a common electrode on the overcoat layer.
9. The method according to claim 8 , wherein the black matrix is formed in a space between the adjacent sub-color filters.
10. The method according to claim 8 , wherein the step of forming the red, green and blue sub-color filters includes:
attaching a red transcription film on the substrate;
irradiating a laser beam onto the red transcription film corresponding to a red sub-pixel region;
removing the red transcription film from the substrate to form the red sub-color filter;
attaching a green transcription film on the substrate;
irradiating a laser beam onto the green transcription film corresponding to a green sub-pixel region;
removing the green transcription film from the substrate to form the green sub-color filter;
attaching a blue transcription film on the substrate;
irradiating a laser beam onto the blue transcription film corresponding to a blue sub-pixel region;
removing the blue transcription film from the substrate to form the blue sub-color filter; and
hardening the red, green and blue sub-color filters.
11. The method according to claim 10 , wherein the step of hardening the red, green and blue sub-color filters is performed under a temperature of about 200° C. to about 300° C.
12. The method according to claim 8 , wherein the step of forming the red, green and blue sub-color filters includes:
attaching a red transcription film on the substrate;
irradiating a laser beam onto the red transcription film corresponding to a red sub-pixel region;
removing the red transcription film from the substrate to form the red sub-color filter;
hardening the red sub-color filter;
attaching a green transcription film on the substrate;
irradiating a laser beam onto the green transcription film corresponding to a green sub-pixel region;
removing the green transcription film from the substrate to form the green sub-color filter;
hardening the green sub-color filter;
attaching a blue transcription film on the substrate;
irradiating a laser beam onto the blue transcription film corresponding to a blue sub-pixel region;
removing the blue transcription film from the substrate to form the blue sub-color filter; and
hardening the blue sub-color filter.
13. The method according to claim 8 , wherein the black matrix includes a photosensitive organic material.
14. The method according to claim 13 , wherein the photosensitive organic material is one of a photosensitive resin and an epoxy resin including pigment.
15. The method according to claim 8 , wherein each of the red, green and blue sub-color filters has an indented edge portion.
16. The method according to claim 15 , wherein the black matrix entirely covers the indented edge portion.
17. The method according to claim 16 , wherein the black matrix has a width of about 15 μm to about 30 μm.
18. A color filter substrate for a liquid crystal display device, comprising:
a substrate;
a thermal-imageable transcription film on the substrate having red, green and blue sub-color filters spaced apart from each other;
a black matrix on the red, green and blue sub-color filters;
an overcoat layer on the black matrix; and
a common electrode on the overcoat layer,
wherein the black matrix overlaps an upper surface of the sub-color filters.
19. The substrate according to claim 18 , wherein each of the red, green and blue sub-color filters has a substantially indented edge portion.