Method of making accurate dimension alignment film for LCD

Details Method of making accurate dimension alignment film for LCD Method of making accurate dimension alignment film for LCD

1996-02-23

2000-08-08

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Laser ablative shaping or piercing

264 137, 264 17, 264 134, 264132, 359 62, 359 76, 427162, 4271631, 428 1, B29D 1100

Patent

active

060997869

ABSTRACT:
A method of making accurate alignment layers in a liquid crystal display (LCD) cell is provided so that the LCD seal band can be placed as close to the pixel as possible. This method is implemented by ablating the apolyimide film on the glass substrates of the LCD cell to remove the alignment film where the sealing material is to be dispersed later. Thus, the sealing band can butt against the liquid crystal mixture without any clearance. In so doing, the display area is increased, and the reliability of the seal is improved.

REFERENCES:
patent: 4132464 (1979-01-01), Maeno
patent: 4158485 (1979-06-01), Mueller et al.
patent: 4235525 (1980-11-01), Berman et al.
patent: 5008049 (1991-04-01), Rose et al.
patent: 5200238 (1993-04-01), McArdle et al.
patent: 5221981 (1993-06-01), Kodera et al.

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