Apparatus for automatically displaying the grade of liquid crystal display device and operating method thereof

1. An apparatus for automatically displaying a grade of a liquid crystal display panel comprising:

displaying a predeterminded pattern on the liquid crystal display panel;

a grade determining unit for determining the grade of the liquid crystal panel based on said displayed pattern and for displaying a predetermined pattern on the liquid crystal display panel;

a grade inputting unit for inputting the grade of the liquid crystal display panel whose grade has been determined in the grade determining unit;

a grade discriminating unit for comparing the input grade of the liquid crystal display device from the grade inputting unit with a value of an inspected liquid crystal display panel and for transferring the grade of a corresponding liquid crystal display panel based upon receiving data input to the grade inputting unit;

a storing unit having a grade displaying unit for classifying the graded liquid crystal display panels according to grades and storing the grades; and

a robot driving unit for transferring the liquid crystal display panel to the storing unit according to instructions from the grade discriminating unit.

2. The apparatus of claim 1 , wherein the storing unit includes a plurality of storing devices for classifying the liquid crystal display panels based upon grades.

3. The apparatus of claim 2 , wherein the storing devices include a grade displaying unit.

4. The apparatus of claim 1 , wherein the grade displaying unit is an LED display device.

5. The apparatus of claim 1 , wherein grade information to be displayed on the grade displaying unit is input in the grade inputting unit.

6. A method of operating an apparatus for automatically displaying the grade of a liquid crystal display device comprising:

displaying a grade indicator on grade displaying units installed in a plurality of storing devices of a storing unit where liquid crystal display devices are to be stored;

displaying a predetermined pattern on the liquid crystal display device;

determining the grade of the liquid crystal display device based on said displayed pattern using a grade determining unit;

inputting the determined grade of the liquid crystal display device to a grade inputting unit;

comparing the input grade of the liquid crystal display device from the grade inputting unit with a value of an inspected liquid crystal display panel and transmitting the comparison information to a robotic portion; and

storing the graded liquid crystal display device in the storing device.

7. The apparatus of claim 6 , wherein storing the liquid crystal display device of which grade has been determined includes:

transmitting the grade information to a robot driving unit to transfer the liquid crystal display panel which has been inspected from the grade discriminating unit; and

transferring and storing the liquid crystal display device in the storing device using the robot driving unit.