Liquid crystal display device and method for manufacturing the same
View Patent ↗A liquid crystal display device includes a first substrate having a plurality of first electrodes, a second substrate facing the first substrate and having a plurality of second electrodes perpendicular to the first electrodes to define sub-pixels at intersection regions between the first and second electrodes, a liquid crystal layer between the first and second substrates, a plurality of color filters between the first and second substrates adapted to correspond to respective sub-pixels, the color filters including first color filters and second color filters having a different shape than the first color filters, a black matrix between the color filters, the black matrix including vertical portions, horizontal portions, and step portions, each of the step portions corresponding to a respective second color filter, and a plurality of patterned spacers between the first and second substrates, each of the patterned spacers overlaps with a respective step-portion of the black matrix.
1. A liquid crystal display (LCD) device, comprising:
a first substrate having a plurality of first electrodes;
a second substrate facing the first substrate and having a plurality of second electrodes, the second electrodes being perpendicular to the first electrodes to define sub-pixels at intersection regions between the first and second electrodes;
a liquid crystal layer between the first and second substrates;
a plurality of color filters between the first and second substrates adapted to correspond to respective sub-pixels, the color filters including first color filters and second color filters having a different shape than the first color filters;
a black matrix between the color filters, the black matrix including vertical portions, horizontal portions, and step portions, each of the step portions corresponding to a respective second color filter; and
a plurality of patterned spacers between the first and second substrates, each of the patterned spacers overlapping with a respective step-portion of the black matrix.
2. The LCD device as claimed in claim 1 , further comprising first and second alignment layers on inner surfaces of the first and second substrates, respectively.
3. The LCD device as claimed in claim 1 , wherein the black matrix is on an inner surface of the second substrate.
4. The LCD device as claimed in claim 1 , wherein the color filters include red, green, and blue color filters.
5. The LCD device as claimed in claim 4 , wherein three sub-pixels corresponding to red, green, and blue color filters define a single unit pixel with one second filter.
6. The LCD device as claimed in claim 5 , wherein the second filter is a red, green, or blue color filter.
7. The LCD device as claimed in claim 1 , wherein the second filters have a bent shape.
8. The LCD device as claimed in claim 7 , wherein the bent shape of the second filters is a shape having a missing corner portion as compared to a shape of the first color filters.
9. The LCD device as claimed in claim 8 , wherein the step portion of the black matrix is positioned to replace the missing corner portion of a respective second color filter.
10. The LCD device as claimed in claim 7 , wherein the second filters are longitudinal.
11. The LCD device as claimed in claim 1 , wherein the first color filters have a substantially same shape as the sub-pixels.
12. The LCD device as claimed in claim 1 , wherein the patterned spacers are in direct contact with the second electrodes.
13. The LCD device as claimed in claim 1 , wherein each step portion of the black matrix is in contact with the vertical and horizontal portions of the black matrix.
14. The LCD device as claimed in claim 1 , wherein the step portion of the black matrix is wider than the vertical portion of the black matrix.
15. The LCD device as claimed in claim 1 , wherein each of the patterned spacers is entirely overlapping with a respective step-portion of the black matrix.
16. The LCD device as claimed in claim 1 , wherein the step portion of the black matrix is wider than a diameter of the patterned spacer.
17. The LCD device as claimed in claim 1 , wherein the patterned spacers are positioned at equal intervals from one another.
18. A method for manufacturing a liquid crystal display (LCD) device, comprising:
forming a first substrate having a plurality of first electrodes to face a second substrate having a plurality of second electrodes, the second electrodes being perpendicular to the first electrodes to define sub-pixels at intersection regions between the first and second electrodes;
forming a liquid crystal layer between the first and second substrates;
forming a plurality of color filters between the first and second substrates to correspond to respective sub-pixels, the color filters including first color filters and second color filters having a different shape than the first color filters;
forming a black matrix between color filters, the black matrix including vertical portions, horizontal portions, and step portions, each of the step portions corresponding to a respective second color filter; and
forming a plurality of patterned spacers between the first and second substrates, each of the patterned spacers overlapping with a respective step-portion of the black matrix.
19. The method as claimed in claim 18 , wherein forming the first and second color filters includes forming the second color filters to have a bent shape having a smaller cross-sectional area than the first color filters.
20. The method as claimed in claim 18 , wherein forming the first and second color filters includes forming red, green, and blue color filters to define a single unit pixel, so each unit pixel includes two first color filters and one second color filter.