Method for manufacturing liquid crystal display
View Patent ↗The present invention materializes a liquid-crystal display element and a liquid-crystal display device which promise superior display performance, in which the surface of an alignment film formed on a substrate member has been subjected to rubbing in the state the surface potential of a rubbing roller has been controlled by bringing a charge control member made to have the same potential as the potential of the substrate member into contact with the rubbing roller, to keep any foreign matter from adhering to the alignment film surface.
1. A method of manufacturing a liquid-crystal display element, the method comprising:
a rubbing step of bringing a rubbing cloth provided on the surface of a rubbing roller into contact with an alignment film formed on the surface of a substrate member to subject the alignment film to rubbing;
wherein said rubbing step is feedback-controlled in accordance with a measured value obtained by measuring the surface potential of said rubbing cloth and the surface potential of said alignment film so that the surface potential of said rubbing cloth has the same polarity as the surface potential of said alignment film when said rubbing cloth comes into contact with the surface of the alignment film.
2. A liquid-crystal display device comprising the liquid-crystal display element manufactured by the method according to claim 1 .