Organic pigments in colour filters of liquid chrystal displays

Details Organic pigments in colour filters of liquid chrystal displays Organic pigments in colour filters of liquid chrystal displays

C - Chemistry, Metallurgy

09

B

C09B 45/14 (2006.01) C09B 67/22 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01) G02F 1/13 (2006.01) G03F 7/00 (2006.01)

Patent

CA 2342465

Use of metal complexes of an azo compound which conforms to the formula (I) or to one of its tautomeric structures (see formula I) where R and R' are independently OH, NH2, NH-CN, acylamino or arylamino and R1 and R1' are independently -OH or -NH2, and which hosts at least one guest compound, the metal complexes corresponding to the mono-, di-, tri- and tetraanions of the azo compounds of the formula (I) with the metals Li, Cs, Mg, Cd, Co, Al, Cr, Sn, Pb, particularly preferably Na, K, Ca, Sr, Ba, Zn, Fe, Ni, Cu, Mn and La, as a pigment in colour filters for liquid-crystal displays.

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