Liquid crystal display having color filters with recess structures
View Patent ↗A liquid crystal display includes a lower substrate, an upper substrate positioned parallel with the lower substrate, and a plurality of pixel units between the lower substrate and the upper substrate. Each pixel unit includes an upper transparent electrode, a liquid crystal layer, a lower transparent electrode, and a color filter with recess structures.
1. A liquid crystal display comprising:
a lower substrate;
an upper substrate positioned parallel with the lower substrate; and
a plurality of pixel units, each of the pixel units including an upper transparent electrode, a liquid crystal layer, a lower transparent electrode, and a color filter formed on the upper substrate and above the lower substrate;
wherein a surface of each color filter has a region with a plurality of curved convex structures, and each of the pixel units respectively comprises a reflection layer with at least one opening positioned between the color filter and the lower substrate and the region with a plurality of curved convex structures is only respectively formed on a reflection region.
2. The liquid crystal display of claim 1 wherein the color filter is covered with the upper transparent electrode directly.
3. The liquid crystal display of claim 1 wherein the surface of each color filter which has the region with a plurality of curved convex structures is able to scatter light.
4. The liquid crystal display of claim 1 wherein a distribution density of the curved convex structures is used to regulate brightness and a color deepness of the liquid crystal display.
5. The liquid crystal display of claim 1 being a reflective liquid crystal display.
6. The liquid crystal display of claim 1 being a semi-transmissive and semi-reflective liquid crystal display.
7. The liquid crystal display of claim 1 further comprising a plurality of thin film transistors for respectively controlling each of the pixel units.
8. The liquid crystal display of claim 7 wherein the thin film transistors are formed on the lower substrate and below the upper substrate.
9. The liquid crystal display of claim 1 wherein each of the curved convex structures comprises a smooth surface.
10. The liquid crystal display of claim 1 wherein each of the curved convex structures comprises a spherical surface.
11. The liquid crystal display of claim 1 wherein each of the pixel units comprises three of the color filters having the region with a plurality of the curved convex structure respectively.
12. The liquid crystal display of claim 1 wherein the curved convex structures have non-uniform sizes.