Optical filter comprising transparent support and filter layer containing dye and binder polymer
AssigneeFuji Photo Film Co., Ltd.
InventorsToru Harada, Tsukasa Yamada
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Abstract
An optical filter comprises a transparent and a filter layer. The filter layer contains a dye and a binder polymer. The dye is a cyanine dye represented by the formula (I). The filter layer further contains a specific metal complex. in which each of Z1 and Z2 independently is an non-metallic atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring; each of R1 and R2 independently is an alkyl group, an alkenyl group, an aralkyl group or an aryl group; L1 is a methine chain consisting of an odd number of methines; X is an anion; and each of a, b and c independently is 0 or 1.
Claims15
An optical filter which comprises a transparent support and a filter layer containing a dye and a binder polymer, wherein the dye is a cyanine dye represented by the formula (I), and the filter layer further contains a metal complex represented by the formula (IIa):
- in which each of Z1 and Z2 independently is an non-metallic atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring;
- each of R1 and R2 independently is an alkyl group, an alkenyl group, an aralkyl group or an aryl group;
- L1 is a methine chain consisting of an odd number of methines;
- X is an anion;
- and each of a, b and c independently is 0 or 1;
- Ln1Mm1 (IIa)
- in which L is a ligand, M is a metal atom, n1 is an integer of 1 to 10, and m1 is an integer of 1 or 2.
A plasma display panel having a display surface covered with an optical filter which comprises a transparent support and a filter layer containing a dye and a binder polymer, wherein the dye is a cyanine dye represented by the formula (I), and the filter layer further contains a metal complex represented by the formula (IIa):
- in which each of Z1 and Z2 independently is an non-metallic atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring;
- each of R1 and R2 independently is an alkyl group, an alkenyl group, an aralkyl group or an aryl group;
- L1 is a methine chain consisting of an odd number of methines;
- X is an anion;
- and each of a, b and c independently is 0 or 1;
- Ln1Mm1 (IIa)
- in which L is a ligand, M is a metal atom, n1 is an integer of 1 to 10, and m1 is an integer of 1 or 2.
Dependencies are inferred from the claim text.