Method of repairing liquid crystal display and apparatus using t

Details Method of repairing liquid crystal display and apparatus using t Method of repairing liquid crystal display and apparatus using t

1989-10-20

1991-05-21

Albritton, C. L.

Electric heating

Metal heating

By arc

21912175, 21912176, 21912178, 21912182, 21912183, B23K 2600

Patent

active

050177559

ABSTRACT:
An apparatus for repairing a liquid crystal display comprises a common electrode, pixel electrodes facing the common electrode, and a liquid crystal sealed between the common and pixel electrodes. If the liquid crystal contains foreign matter which short-circuits the common and pixel electrodes to each other, a pixel electrode is irradiated with a laser beam such that at least a ring line region completely surrounding a portion touching the foreign matter is burnt away, whereby a region inside of the ring line region and a region outside of the ring line region are electrically insulated from each other.

REFERENCES:
patent: 3947093 (1976-03-01), Gashima et al.
patent: 3972599 (1976-08-01), Engel et al.
patent: 4190759 (1980-02-01), Hongo et al.
Technical Paper IMC 1988 Proceedings, Tokyo, May 25-27, 1988, Application of a Xenon Laser in Microelectronics and Liquid Crystal Displays--by Vu Tran.

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