A liquid crystal composition comprising a host liquid crystal and at least one perylene dye dissolved therein represented by the formula: <IMAGE> wherein X represents an oxygen atom or a sulfur atom, R1 and R2 each represents an aryl group when X represents an oxygen atom; or an aryl group or an alkyl group containing 1 to 18 carbon atoms when X represents a sulfur atom.
申请公布号
US4454057(A)
申请公布日期
1984.06.12
申请号
US19820392909
申请日期
1982.06.28
申请人
HITACHI LTD.;MITSUBISHI CHEMICAL INDUSTRIES LIMITED