Liquid crystal display device and color filter substrate of the same
View Patent ↗A color filter substrate is disclosed, including a substrate, a black matrix disposed on the substrate and multiple color resist blocks separated by the black matrix and disposed on the substrate. Each color resist block is filled with a color resist material, the color resist material includes pigment molecules, including at least one photosensitive substituent. A liquid crystal display device having the same is also disclosed. Utilizing an UV irradiation step in the CF process, the pigment molecules are aligned directionally, which can increase the transmittance of the color filter substrate, the utilization rate of the backlight, and decrease the power consumption. Under the same display brightness, the thickness of the color filter substrate can be decreased; the pigment molecules aligned directionally can make an emitting light to be along a same direction to reduce the light interference between adjacent sub-pixels having different colors to greatly decrease the color shift.
1. A liquid crystal display device, comprising:
a liquid crystal panel and a backlight module disposed oppositely, wherein, the backlight module provides a display light source to the liquid crystal panel such that the liquid crystal panel displays an image; wherein, the liquid crystal panel includes a thin-film transistor array, a liquid crystal layer and a color filter substrate along a direction away from the backlight module, wherein the color filter substrate comprises:
a substrate disposed above the liquid crystal layer;
a black matrix disposed on the substrate; and
multiple color resist blocks separated by the black matrix and disposed on the substrate, each color resist block is filled with a color resist material, the color resist material includes pigment molecules, and the pigment molecules include at least one photosensitive substituent;
wherein the multiple color resist blocks are separated from the liquid crystal layer by the substrate; and
wherein emergent directions of polarized lights emitted from the color filter substrate are the same.
2. The liquid crystal display device according to claim 1 , wherein, the photosensitive substituent in the pigment molecules of the color filter substrate makes the pigment molecules to be aligned directionally under a function of an ultraviolet light.
3. The liquid crystal display device according to claim 2 , wherein, a wavelength of the ultraviolet light is in a range of 250 nm˜370 nm.
4. The liquid crystal display device according to claim 2 , wherein, the photosensitive substituent carries out a photoisomerization reaction, a photolysis reaction or a photodimerization reaction under a function of an ultraviolet light.
5. The liquid crystal display device according to claim 4 , wherein, photosensitive substituent has a structural formula as following formula (1), formula (2) or formula (3):
6. The liquid crystal display device according to claim 5 , wherein, the multiple color resist blocks in the color filter substrate include a red color resist block, a green color resist block and a blue color resist block.
7. The liquid crystal display device according to claim 5 , wherein, the multiple color resist blocks are sequentially ranged as the red color resist block, the green color resist block and the blue color resist block.