System and method for dispensing liquid crystal material and method for fabricating liquid crystal display device using the same
A liquid crystal dispensing system in which dispensing of a liquid crystal material is paused when an earthquake or the like occurs, while restarting the dispensing of the liquid crystal material when the earthquake stops, the liquid crystal dispensing system comprising a liquid crystal dispensing apparatus for dispensing a liquid crystal material onto a substrate, a detecting unit for detecting an abnormal dispensing, and a controller for controlling the liquid crystal dispensing apparatus to pause dispensing of the liquid crystal material when an abnormal dispensing of liquid crystal material is detected.
1. A method for fabricating a liquid crystal display device comprising:
providing a first substrate and a second substrate having at least one unit panel is formed;
measuring an oscillation of a weight measurement scale to output an oscillation signal;
comparing the oscillation duration of the signal with a set oscillation value to detect an abnormal dispensing of liquid crystal material;
dispensing the liquid crystal material onto at least one of the first and second substrates; and
attaching the first and second substrates to each other.
2. The method of claim 1 , further comprising:
forming a thin film transistor on the fist substrate; and
forming a color filter layer on the second substrate.
3. The method of claim 1 , wherein the liquid crystal dispenser includes a liquid crystal discharge pump and the liquid crystal discharge pump includes:
a cylinder;
a piston inserted into the cylinder and having a groove at a lower portion, for rotating and moving upwardly and downwardly and thus intaking and discharging the liquid crystal material; and
a suction opening and a discharge opening for intaking and discharging the liquid crystal material according to the movement of the piston.
4. The method of claim 1 , wherein the detecting of the abnormal dispensing includes a signal informing of an occurrence of earthquake being inputted from an earthquake measuring device.
5. The method of claim 1 , wherein the comparing of the signal with the set value includes comparing an amplitude of the signal with a set amplitude.
6. The method of claim 5 , wherein the dispensing of the liquid crystal material is paused when the amplitude of the signal is greater than the set amplitude.
7. The method of claim 1 , wherein the dispensing of liquid crystal material is paused when the oscillation duration of the signal is greater than the set oscillation duration.
8. The method of claim 1 , further comprising pausing the dispensing of the liquid crystal material when the abnormal dispensing is detected.
9. The method of claim 8 , further comprising restarting the dispensing of the liquid crystal material when the abnormal dispensing is removed.
10. The method of claim 1 , wherein dispensing the liquid crystal material includes dispensing through a nozzle of the liquid crystal dispenser.