Dichroic coloring agents for liquid crystal displays

Details Dichroic coloring agents for liquid crystal displays Dichroic coloring agents for liquid crystal displays

1988-09-09

1989-11-28

Terapane, John F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Polycyclo ring system containing anthracene configured ring...

2522991, C09K 1900, C07C10180, C09B 116, C09B 160

Patent

active

048836117

ABSTRACT:
Dichroic coloring agents which have a blue to blue-violet hue and have not been used to date for liquid crystal displays are disclosed. These coloring agents are represented by the following formula: ##STR1## wherein X is S or NH; R.sub.1 is a hydrogen atom, halogen atom, alkyl group or alkoxy group; and R.sub.2 is a hydrogen atom, alkyl group, aryl group or aralkyl group.

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