Apparatus and method for correcting grinding amount of liquid crystal display panel

#This application claims the benefit of Korean Patent Application No. 2002-15455, filed on Mar. 21, 2002, which is hereby incorporated by reference for all purposes as if fully set forth herein.

#1. Field of the Invention

#The present invention relates to an apparatus and a method for correcting a grinding amount of a liquid crystal display panel. In more detail, in cutting liquid crystal display panels formed on a mother substrate having large area into individual unit liquid crystal display panels and grinding the edge of each unit liquid crystal display panel, the present invention relates to an apparatus and a method for correcting a grinding amount of a liquid crystal display panel capable of facilitating measurement and correction of a grinding amount thereof.

#The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

#In the drawings:

#FIG. 1 is an exemplary view illustrating a sectional view of multiple liquid crystal display panels fabricated by attaching a first mother substrate having thin film transistor array substrates to a second mother substrate having color filter substrates;

#Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

#FIG. 6 is a block diagram illustrating an apparatus for correcting a grinding amount of a liquid crystal display panel in accordance with an embodiment of the present invention.

#As shown in FIG. 6, the apparatus for correcting a grinding amount of a liquid crystal display panel in accordance with the exemplary embodiment includes a grinding unit 101 for grinding the edge of a unit liquid crystal display panel; a camera 102 disposed in the grinding unit 101 for recording grinding images along the ground edge of the unit liquid crystal display panel; a first memory unit 103 disposed in the grinding unit 101 storing the grinding pictures and a second memory unit 104 disposed in the grinding unit 101 storing a reference picture; a comparing unit 105 disposed in the grinding unit 101, comparing the grinding pictures with the reference picture respectively stored in the first and second memory units 103, 104; and a control unit 106 disposed in the grinding unit 101, changing a set value of the grinding unit 101 according to an error value of the comparing unit 105, returning the unit liquid crystal display device to the grinding apparatus via a returning unit 107, and controlling the grinding unit 101 to regrind the unit liquid crystal display panel.