Liquid crystal material processing device, method of processing liquid crystal material, method of manufacturing liquid crystal display panel, and liquid crystal display device
According to one embodiment, the liquid crystal material processing device includes a syringe containing contents composed of a liquid crystal material and the like, having a distal end portion constituting a first discharge pipe, an agitation mechanism agitating the contents of the syringe, a vacuum chamber having a second discharge pipe penetrating the bottom to connect to the first discharge pipe of the syringe. The agitation mechanism agitates the liquid crystal material and the pure water in the syringe, and purifies the liquid crystal material by causing water-soluble impurities to transfer to the pure water. The agitation mechanism agitates the liquid crystal material remaining in the syringe after the water layer has been discharged. The evacuation mechanism evacuates the vacuum chamber and causes the liquid crystal material to be degassed while the remaining liquid crystal material is agitated.
1. A method of processing a liquid crystal material, comprising:
agitating and mixing the liquid crystal material and pure water in a syringe accommodated in a vacuum chamber, purifying the liquid crystal material by transferring water-soluble impurities contained in the liquid crystal material to the pure water, stopping the agitation, and separating the mixture into a liquid crystal material layer of an upper layer and a water layer of a lower layer by leaving the mixture to stand still;
discharging the water layer of the lower layer from the syringe to an outside of the vacuum chamber; and
evacuating the vacuum chamber and degassing the liquid crystal material while agitating the liquid crystal material remaining in the syringe after discharging the water layer of the lower layer.
2. The method of claim 1 , wherein
the liquid crystal material and the pure water are agitated and mixed at a proportion of 1 part by weight or more and less than 5 parts by weight of pure water to 100 parts by weight of liquid crystal material.
3. The method of claim 2 , wherein
the agitation and mixing of the liquid crystal material and the pure water are performed at 5 to 100 rpm for 1 to 60 minutes.
4. The method of claim 2 , wherein
the agitation of the liquid crystal material remaining in the syringe is performed at 50 to 100 rpm for 5 to 10 hours.
5. The method of claim 2 , wherein
pure water having a specific resistance of 16MΩ·cm or more is used as the pure water.
6. The method of claim 1 , wherein
the agitation and mixing of the liquid crystal material and the pure water are performed at 5 to 100 rpm for 1 to 60 minutes.
7. The method of claim 6 , wherein
the agitation of the liquid crystal material remaining in the syringe is performed at 50 to 100 rpm for 5 to 10 hours.
8. The method of claim 6 , wherein
pure water having a specific resistance of 16MΩ·cm or more is used as the pure water.
9. The method of claim 1 , wherein
the agitation of the liquid crystal material remaining in the syringe is performed at 50 to 100 rpm for 5 to 10 hours.
10. The method of claim 9 , wherein
pure water having a specific resistance of 16MΩ·cm or more is used as the pure water.
11. The method of claim 1 , wherein
pure water having a specific resistance of 16MΩ·cm or more is used as the pure water.
12. The method of claim 1 , wherein
ultrapure water having a specific resistance of 18MΩ·cm or more and an impurity amount of 0.001 μg/L or less is used as the pure water.