Patent Number: 7,820,071

Title: Light modulating material and light modulating method

Abstract: A light modulating material comprising at least one kind of dichroic dye having a substituent represented by the following Formula (1) and at least one kind of host liquid crystal between a pair of electrodes, and changing the transmittance of incident light. In the formula (1), Het is oxygen atom or sulfur atom; B.sup.1 and B.sup.2 each independently represent an arylene group, a heteroarylene group or a bivalent cyclic aliphatic hydrocarbon group; Q.sup.1 represents a bivalent linking group; C.sup.1 represents an alkyl group, a cycloalkyl group, an alkoxy group, an alkoxycarbonyl group, an acyl group, or an acyloxy group; j represents 0 or 1; p, q and r each independently represent an integer from 0 to 5; n represents an integer from 1 to 3; (p+r).times.n is an integer from 3 to 10. -(Het).sub.j-{(B.sup.1).sub.p-(Q.sup.1).sub.q-(B.sup.2).sub.r}.sub.n-- -C.sup.1 Formula (1):

Inventors: Kato; Takashi (Kanagawa, JP), Takaku; Koji (Kanagawa, JP), Hayashi; Naoyuki (Kanagawa, JP), Osaku; Akihide (Kanagawa, JP)

Assignee: Fujifilm Corporation

International Classification: C09K 19/00 (20060101); G02F 1/13 (20060101); G02F 1/03 (20060101); C09K 19/06 (20060101); C09K 19/52 (20060101)

Expiration Date: 2018-10-26 0:00:00