Liquid crystal display panel capable of minimizing a defect rate caused by bright point and repairing method thereof
View Patent ↗A liquid crystal display penel includes a substrate, a hole disposed in the substrate, and an opaque substance filling in the hole. The hole is configured to be located in an area corresponding to a bright point. The liquid crystal display penel may minimize a defect ratio and improve a yield by darkening the bright point.
1. A liquid crystal display panel including an upper substrate and a lower substrate, comprising:
a hole disposed in one of the upper substrate and the lower substrate, the hole configured to be located in an area corresponding to a bright point;
an opaque substance partially filling in a lower part of the hole; and
a transparent substance filling in an upper part of the hole, wherein the transparent substance includes a transparent pigment and is formed on the opaque substance.
2. The liquid crystal display panel according to claim 1 , further comprising a black matrix and a color filter on the upper substrate.
3. The liquid crystal display panel according to claim 2 , wherein the opaque substance includes a colored metal substance.
4. The liquid crystal display panel according to claim 3 , wherein the colored metal substance is the same substance as the black matrix.
5. The liquid crystal display panel according to claim 1 , wherein the opaque substance includes a colored pigment.
6. The liquid crystal display penel according to claim 5 , wherein the colored pigment includes a substance realizing the same color as the color filter.
7. The liquid crystal display panel according to claim 5 , wherein the colored pigment includes the same substance as the color filter.
8. The liquid crystal display panel according to claim 5 , wherein the colored pigment comprises a substance realizing one of black color and gray color.
9. The liquid crystal display panel according to claim 1 , wherein the hole has a diameter of 20 μm to 500 μm.
10. A method for repairing a liquid crystal display panel having a an upper substrate and a lower substrate, comprising:
sensing an area corresponding to a bright point;
forming a hole in one of the upper substrate and the lower substrate, the hole configured to be located in the area corresponding to the bright point;
partially filling an opaque substance in a lower part of the hole; and
filling a transparent substance in an upper part of the hole, wherein the transparent substance includes a transparent pigment and is formed on the opaque substance.
11. The method according to claim 10 , wherein forming the hole comprises forming the hole with at least one of a micro drill, a micro milling, or a laser.
12. The method according to claim 11 , wherein forming the hole comprises supplying a light having a wavelength of about 50 nm to 300 nm with the laser.
13. The method according to claim 10 , wherein the partially filling the opaque substance in the lower part of the hole comprises:
filling in an entire hole with the opaque substance; and
partially removing the opaque substance with an etchant.
14. The method according to claim 10 , wherein filling in the hole comprises forming the opaque substance with the same substance as one of a black matrix and a color filter.
15. The method according to claim 14 , wherein filling in the hole comprises forming the opaque substance with a substance realizing the same color as the color filter.
16. The method according to claim 10 , wherein filling in the hole comprises forming the opaque substance with one of a colored pigment and a colored metal substance.
17. The method according to claim 16 , wherein forming the opaque substance comprises performing one of a vacuum deposition, a spraying process and a sputtering.