Method of rubbing an orientation controlling film of a liquid cr

Details Method of rubbing an orientation controlling film of a liquid cr Method of rubbing an orientation controlling film of a liquid cr

1993-12-28

1995-11-07

Silbaugh, Jan H.

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

359 76, B08B 312, G02F 113

Patent

active

054644780

ABSTRACT:
A method of rubbing an orientation controlling film of a liquid crystal display, wherein a glass substrate on which an orientation controlling film is printed, is disposed in a bath, and the glass substrate is rubbed with the deionized water being supplied to be washed by means of the deionized water and ultrasonic waves, and then the deionized water is discharged from the bath and the glass substrate is dried. The production of electrostatic charge on the orientation controlling film can be restrained, and the processing step can be reduced because the rubbing and the washing are performed simultaneously, thereby the quality of the liquid crystal display element can be improved.

REFERENCES:
patent: 3898351 (1975-08-01), Kennison et al.
patent: 3973057 (1976-08-01), Channin et al.
patent: 4412724 (1983-11-01), Sandhu
patent: 4906311 (1990-03-01), Gurol
patent: 5075790 (1991-12-01), Hayashi et al.
patent: 5221981 (1993-06-01), Kodera et al.
patent: 5288333 (1994-02-01), Tanaka et al.

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