Method and apparatus for adjusting the relative positioning of planar transparent objects, such as the glass plates of a liquid crystal display, and a liquid crystal display adjusted by the method and apparatus

摘要

A method and apparatus for adjusting the relative positioning of planar transparent objects, such as the two glass plates of a liquid crystal display, (LCD). Textured transparent markings are disposed on the planar transparent objects. Thereafter a collimated light beam is passed through the transparent textured markings and refracted thereby. Images of the textured markings are observed and detected, whereupon the relative positioning of the planar transparent objects is adjusted until the detected images are aligned in a predetermined spatial orientation. Also disclosed is a novel liquid crystal display having the transparent textured markings provided on the transparent electrode layers of the LCD device.