Alignment device and rubbing cloth for alignment with respect to

Details Alignment device and rubbing cloth for alignment with respect to Alignment device and rubbing cloth for alignment with respect to

1996-07-24

1999-03-09

Lorin, Francis J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156295, 349126, 492 29, G02F 11337

Patent

active

058794972

ABSTRACT:
An alignment device for aligning a liquid crystal display device-use substrate is a rubbing device provided with a rubbing roller, the rubbing roller being composed of a rotary roller and a rubbing cloth, the rubbing cloth being provided around the circumferential surface of the rotary roller. The rubbing device carries out alignment by rotating the rubbing roller so as to rub an alignment film formed on the surface of the liquid crystal display device-use substrate, in a specific direction with piles provided on the rubbing cloth. One of the directions of the pile lines of the rubbing roller provided around the rotary roller is tilted to the rotation direction of the rotary roller. With this arrangement, "irregular display with stripes" occurring to a liquid crystal display device is restrained, which is caused by uneven strength of touches of the piles to the alignment film, such uneven strength of touches resulting from positions of the piles which are provided in the rubbing cloth provided in the rubbing roller.

REFERENCES:
patent: 3771428 (1973-11-01), Horner et al.
patent: 4402999 (1983-09-01), Tatsumichi et al.
patent: 5221981 (1993-06-01), Kodera et al.
patent: 5422750 (1995-06-01), Kodera et al.
patent: 5455695 (1995-10-01), Kodera et al.

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