Liquid crystal display device and method of fabricating the same
View Patent ↗A liquid crystal display device is disclosed that is capable of preventing poor alignment caused by a column spacer to improve the contrast ratio. The liquid crystal display device includes a color filter and column spacers located between a first substrate and a second substrate. The column spacers maintain the cell gap between the first and second substrates. The color filter contains pixels having multiple sub-pixels of different colors. The column spacers in regions of sub-pixels of the same color are randomly formed within the regions.
1. An IPS mode display device comprising:
a first substrate containing a plurality of column spacers; and
a second substrate, the column spacers maintaining a cell gap between the first and second substrates,
wherein one of the first and second substrates includes a color filter having sub-pixels of different colors,
a first column spacer being randomly positioned on a first gate line between first and second data lines and within a first sub-pixel of the sub-pixels, and
a second column spacer being randomly positioned on a second gate line between the first and second data lines and within a second sub-pixel of the sub-pixels,
the first and second column spacers arranged in different positions of the first sub-pixel and second sub-pixel respectively and the first sub-pixel being the same color as the second sub-pixel, and
wherein one of the first and second substrates includes a black matrix, and the column spacers are covered by the black matrix.
2. The display device according to claim 1 , wherein a pixel contains red, green, and blue sub-pixels and at least one column spacer is located in each pixel.
3. The display device according to claim 1 , wherein the first substrate includes a black matrix, the color filter formed on the black matrix, and a common electrode formed on the color filter.
4. The display device according to claim 1 , wherein the first substrate includes a black matrix, the color filter formed on the black matrix, and a planarization layer formed to cover the color filter.
5. The display device according to claim 1 , wherein the sub-pixel regions of the same color are formed in a substantially vertical direction.
6. The display device according to claim 1 , wherein one of the first and second substrates includes both pixel and common electrodes.
7. The display device according to claim 1 , further comprising an alignment layer disposed on the column spacers.
8. An IPS mode display device comprising:
a first substrate containing a plurality of column spacers; and
a second substrate, the column spacers maintaining a cell gap between the first and second substrates,
wherein one of the first and second substrates includes a color filter having sub-pixels of different colors, the column spacers being randomly disposed in regions of sub-pixels of the same color,
wherein the column spacers are only formed on the sub-pixel providing equal color, and
wherein one of the first and second substrates includes a black matrix, and the column are covered by the black matrix,
wherein the column spacers arranged in different positions of the same color sub-pixels.