Liquid crystal display element with gap controlling material and

Details Liquid crystal display element with gap controlling material and Liquid crystal display element with gap controlling material and

1981-10-16

1982-12-07

McCamish, Marion

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

1563066, C09K 334

Patent

active

043627714

ABSTRACT:
This invention relates to a liquid crystal display element comprising a pair of transparent substrates, electrodes formed on the individual surfaces thereof facing each other, a liquid crystal material layer held between the substrates, and gap controlling material for keeping the gap between the substrates, and is characterized in that the gap controlling material is dispersed and fixed on the substrate surface by an insulating coating film such as an orientation controlling film.
When the gap controlling material is thus dispersed and fixed, it does not move between the substrates, and hence the change of the gap length between the substrates is prevented, so that there can be obtained a liquid crystal display element in which the distance between the substrates is uniform. Moreover, when the insulating coating film is an orientation controlling film, the dispersion and fixation of the gap controlling material is completed simultaneously with the formation of the orientation controlling film, so that beneficial effect can be obtained also with respect to working efficiency.
When the gap controlling material is a combination of a polymer solid and an insulating material having a higher softening point and regidity than those of the polymer solid, the uniformalization and change prevention of the gap length are more effectively achieved.

REFERENCES:
patent: 4242388 (1980-12-01), Kaufmann
patent: 4297401 (1981-10-01), Chern

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