US 12,566,283 B2Granted

Optical absorbent

AssigneeLms Co., Ltd.

InventorsJoon Ho Jung, Hee Kyeong Kim

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Abstract

The present invention provides an optical absorbent and its application. The invention provides the optical absorbent, as an organic optical absorbent, exhibiting excellent compatibility or solubility in various solvents and resin components, and having excellent heat resistance thereby providing the optical absorbent capable of stably maintaining optical properties even under high temperature condition or high temperature and high humidity conditions. The present invention can also provide an optical absorption film that obtains desired optical properties by applying the optical absorbent. The present invention may also provide applications of the optical absorbent or the optical absorption film, and may provide, for example, an optical filter, a solid-state image capturing device, and/or an infrared sensor including the optical absorbent or the optical absorption film.

Claims20

Dependent claims

An optical absorbent represented by Chemical Formula 1:

wherein
A1 to A3 are each independently hydrogen, halogen, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aryl group, or an arylalkyl group;
L1 is -U1-T1-U2-T2 U3- where T1 and T2 are each independently an oxygen atom or absent and U1 to U3 are each independently an alkylene group, an alkylidene group, an alkenylene group, an alkynylene group, or absent;
R1 and R2, R1 to R6, R3 to R6, or R5 to R8 in R1 to R8 form an absorption edge and substituents which do not form the absorption edge among R1 to R8 are each independently hydrogen, halogen, a hydroxyl group, a cyano group, a nitro group, a carboxyl group, an alkyl group, an alkoxy group, an aryl group, an arylalkyl group, an alkylcarbonylamino group, an arylalkylcarbonylamino group, a haloalkylsulfonylamino group, an alkylsulfonylamino group, an arylalkylsulfonylamino group, or an amino group;
and
two dotted lines in Chemical Formula 1 represent as either a single bond or a double bond, wherein each one of the two dotted lines represents as the single bond and the double bond, respectively, or both the two dotted lines represent as the single bond and a cation symbol in Chemical Formula 1 is absent upon both the dotted lines representing as the single bond.

3 more elements

An optical absorbent composition comprising:

a resin component;
and
an optical absorbent represented by Chemical Formula 1:
wherein
A1 to A3 are each independently hydrogen, halogen, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aryl group, or an arylalkyl group;
L1 is -U1-T1-U2-T2-U3- where T1 and T2 are each independently an oxygen atom or absent and U1 to U3 are each independently an alkylene group, an alkylidene group, an alkenylene group, an alkynylene group, or absent;
R1 and R2, R1 to R6, R3 to R6, or R5 to R8 in R1 to R8 form an absorption edge and substituents which do not form the absorption edge among R1 to R8 are each independently hydrogen, halogen, a hydroxyl group, a cyano group, a nitro group, a carboxyl group, an alkyl group, an alkoxy group, an aryl group, an arylalkyl group, an alkylcarbonylamino group, an arylalkylcarbonylamino group, a haloalkylsulfonylamino group, an alkylsulfonylamino group, an arylalkylsulfonylamino group, or an amino group;
and
two dotted lines in Chemical Formula 1 represent as either a single bond or a double bond wherein each one of the two dotted lines represents as the single bond and the double bond, respectively, or both the two dotted lines represent as the single bond and a cation symbol in Chemical Formula 1 is absent upon both the dotted lines representing as the single bond.

6 more elements

An optical absorption film comprising:

a resin component;
and
an optical absorbent represented by Chemical Formula 1:
wherein
A1 to A3 are each independently hydrogen, halogen, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aryl group, or an arylalkyl group;
L1 is -U1-T1-U2-T2-U3- where T1 and T2 are each independently an oxygen atom or absent and U1 to U3 are each independently an alkylene group, an alkylidene group, an alkenylene group, an alkynylene group, or absent;
R1 and R2, R1 to R6, R3 to R6, or R5 to R8 in R1 to R8 form an absorption edge and substituents which do not form the absorption edge among R1 to R8 are each independently hydrogen, halogen, a hydroxyl group, a cyano group, a nitro group, a carboxyl group, an alkyl group, an alkoxy group, an aryl group, an arylalkyl group, an alkylcarbonylamino group, an arylalkylcarbonylamino group, a haloalkylsulfonylamino group, an alkylsulfonylamino group, an arylalkylsulfonylamino group, or an amino group;
and
two dotted lines in Chemical Formula 1 represent as either a single bond or a double bond wherein each one of the two dotted lines represents as the single bond and the double bond, respectively, or both the two dotted lines represent as the single bond and a cation symbol in Chemical Formula 1 is absent upon both the dotted lines representing as the single bond.

6 more elements

Dependencies are inferred from the claim text.