Abstract: Disclosed is a device for grinding a liquid crystal display panel improving the efficiency of using equipment by independently operating first and second grinding units for grinding the unit liquid crystal display panel. The present invention includes a first grinding unit grinding edges of short or long sides of the unit liquid crystal display panel in a normal mode and a second grinding unit grinding the edges of the short or long sides of the unit liquid crystal display panel that are not ground by the first grinding unit in the normal mode or grinding the edges of the long and short sides of the unit liquid crystal display panel in an emergency mode.

Abstract: Disclosed is a grinding table apparatus for a liquid crystal display panel and a grinder using the adapt to various sizes of unit liquid crystal display panels for grinding edges of the corresponding liquid crystal display panel by adjusting a variable moving distance of the grinding tables instead of replacing the previous grinding table. The present invention includes at least two grinding tables displaced in a direction making the grinding tables get farther from or closer to each other to adapt to the size of the unit liquid crystal display panel to grind edges of the unit liquid crystal display panel.

Abstract: A device and a method for testing a liquid crystal display panel are disclosed in the present invention, which enable to conveniently inspect a cutting plane of an individual unit liquid crystal panel. The apparatus includes a first memory unit storing a reference image of an end portion of a reference panel taken through a camera, a second memory unit storing an observed image of an end portion of a cut unit liquid crystal display panel taken through the camera, a comparison/computation unit computing a difference value by comparing the reference image and the observed image, and a display unit displaying the difference value of the comparison/computation unit.

Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.

Abstract: An apparatus for cutting liquid crystal display panels and a cutting method using the same are disclosed in the present invention. The apparatus includes a first scribing unit sequentially forming a plurality of first scribing lines on surfaces of first and second mother substrates having unit liquid crystal display panels and cutting the first and second mother substrates along the first scribing lines, a first turning unit turning the cut first and second mother substrates by 90°, and at least two second scribing units sequentially forming a plurality of second scribing lines on the surfaces of the first and second mother substrates and cutting the first and second mother substrates along the second scribing lines.

Abstract: A method for cutting a liquid crystal display panel is disclosed in the present invention. The method includes forming a first scribing line on surfaces of first and second mother substrates using first and second wheels, cutting the first and second mother substrates along the first scribing line, forming a second scribing line on the second mother substrate using the second wheel, and removing a dummy region from the second mother substrate by cutting the second mother substrate along the second scribing line.

Abstract: A device for cutting a liquid crystal display panel includes a first scribing unit for forming a first scribing line at first and second mother substrates by using first and second wheels and pressing at least a portion of the first scribing line with a first roll, a second scribing unit for forming a second scribing line at the first and second mother substrates by using third and fourth wheels and pressing at least a portion of the second scribing line with a second roll, and a first rotating unit for rotating the first and second mother substrates to form the second scribing line.

Abstract: A device for cutting a liquid crystal display panel and a method for cutting using the same are disclosed in the present invention. The device includes a first scribing unit having first and second wheels for forming a first scribing line on surfaces of first and second mother substrates that are bonded to each other, a first breaking unit for breaking the first and second mother substrates along the first scribing line, a first rotating unit for rotating the first and second mother substrates to form a second scribing line.