Composition for black matrix and method for producing black matrix using the same

1. A composition for a black matrix comprising

(I) a siloxane polymer having a repeating unit represented by the following general formulae (Ia) and/or (Ib):

wherein,

R 1 represents hydrogen, a monovalent to trivalent, linear, branched or cyclic, saturated or unsaturated C 1-30 aliphatic hydrocarbyl, or a monovalent to trivalent C 6-30 aromatic hydrocarbyl,

in said aliphatic hydrocarbyl and said aromatic hydrocarbyl, one or more methylenes are substituted by oxy, imide or carbonyl, or unsubstituted;

one or more hydrogens are substituted by fluorine, hydroxy or alkoxy, or unsubstituted; or one or more carbons are substituted by silicon, or unsubstituted,

when R 1 is divalent or trivalent, R 1 connects silicons contained in a plurality of repeating units,

here, the ratio x in all the repeating units of the general formula (Ia) is 50 mol % to 100 mol %, and the ratio y in all the repeating units of the general formula (Ib) is 0 mol % to 50 mol %,

(II) a silanol condensation catalyst which is selected from the group consisting of a thermal base generator, and a thermal acid generator,

(III) a black colorant, and

(IV) a solvent and

the ratio Mw/Mn of the mass average molecular weight (Mw) to the number average molecular weight (Mn) in terms of styrene is 2.5 or less.

2. The composition for a black matrix according to claim 1 , wherein a repeating unit of said general formula (Ia) in which R 1 is a phenyl is comprised, and said x is 50 mol % to 95 mol %.

3. The composition for a black matrix according to claim 2 , wherein the mass ratio of said black colorant to said siloxane polymer is in the range of the black colorant: the siloxane polymer=10:90 to 70:30.

4. The composition for a black matrix according to claim 3 , wherein the mass average molecular weight of the siloxane polymer is 200 to 10,000, and the ratio Mw/Mn of the mass average molecular weight (Mw) to the number average molecular weight (Mn) in terms of styrene is 2.5 or less.

5. A method for producing a black matrix, comprising applying the composition according to claim 4 onto a substrate to form a coating film, and curing said coating film.

6. The composition for a black matrix according to claim 1 , wherein said silanol condensation catalyst is non-photosentive and is a thermal acid generator.

7. The composition for a black matrix according to claim 6 , wherein either boiling point of, decomposition temperature of or sublimation temperature of the acid generated from said silanol condensation catalyst is 300° C. or lower.

8. The composition for a black matrix according to claim 1 , wherein the mass ratio of said black colorant to said siloxane polymer is in the range of the black colorant: the siloxane polymer=10:90 to 70:30.

9. The composition for a black matrix according to claim 1 , wherein the mass average molecular weight of the siloxane polymer is 200 to 10,000.

10. A method for producing a black matrix, comprising applying the composition according to claim 1 onto a substrate to form a coating film, and curing said coating film.

11. A method for producing a black matrix composite, comprising coating the black matrix produced by the method according to claim 10 with a layer, wherein said layer is formed by applying and curing a composition comprising a siloxane polymer having a repeating unit represented by the general formulae (Ia) and/or (Ib).

12. A method for manufacturing a display device, comprising applying the composition according to claim 1 onto a substrate to form a coating film, and curing the coating film to form a black matrix.

13. The composition for a black matrix according to claim 1 , wherein said silanol condensation catalyst is non-photosentive and is a thermal base generator.

14. A composition for a black matrix comprising

(I) a siloxane polymer having a repeating unit represented by the following general formulae (Ia) and/or (Ib):

wherein,

R 1 represents hydrogen, a monovalent to trivalent, linear, branched or cyclic, saturated or unsaturated C 1-30 aliphatic hydrocarbyl, or a monovalent to trivalent C 6-30 aromatic hydrocarbyl,

in said aliphatic hydrocarbyl and said aromatic hydrocarbyl, one or more methylenes are substituted by oxy, imide or carbonyl, or unsubstituted;

one or more hydrogens are substituted by fluorine, hydroxy or alkoxy, or unsubstituted; or one or more carbons are substituted by silicon, or unsubstituted,

when R 1 is divalent or trivalent, R 1 connects silicons contained in a plurality of repeating units,

here, the ratio x in all the repeating units of the general formula (Ia) is 50 mol % to 100 mol %, and the ratio y in all the repeating units of the general formula (Ib) is 0 mol % to 50 mol %,

(II) a silanol condensation catalyst which is a thermal base generator or thermal acid generator,

(III) a black colorant, and

(IV) a solvent and the siloxane polymer having a linear structure is 30 mol % or less of the total siloxane

polymer and the ratio Mw/Mn of the mass average molecular weight (Mw) to the number average molecular weight (Mn) in terms of styrene is 2.5 or less.

15. The composition for a black matrix according to claim 14 , wherein a repeating unit of said general formula (Ia) in which R 1 is a phenyl is comprised, and said x is 50 mol % to 95 mol %.

16. The composition for a black matrix according to claim 14 , wherein the mass ratio of said black colorant to said siloxane polymer is in the range of the black colorant: the siloxane polymer=10:90 to 70:30.

17. The composition for a black matrix according to claim 14 , wherein the mass average molecular weight of the siloxane polymer is 200 to 10,000.

18. A method for producing a black matrix, comprising applying the composition according to claim 14 onto a substrate to form a coating film, and curing said coating film.

19. A method for producing a black matrix composite, comprising coating the black matrix produced by the method according to claim 18 with a layer, wherein said layer is formed by applying and curing a composition comprising a siloxane polymer having a repeating unit represented by the general formulae (Ia) and/or (Ib).

20. A method for manufacturing a display device, comprising applying the composition according to claim 14 onto a substrate to form a coating film, and curing the coating film to form a black matrix.

21. The composition for a black matrix according to claim 14 , wherein said silanol condensation catalyst is a thermal base generator.

22. The composition for a black matrix according to claim 21 , wherein either boiling point of, decomposition temperature of or sublimation temperature of the acid generated from said silanol condensation catalyst is 300° C. or lower.

23. A composition for a black matrix comprising

(I) a siloxane polymer having a repeating unit represented by the following general formulae (Ia) and/or (Ib):

wherein,

R 1 represents hydrogen, a monovalent to trivalent, linear, branched or cyclic, saturated or unsaturated C 1-30 aliphatic hydrocarbyl, or a monovalent to trivalent C 6-30 aromatic hydrocarbyl,

in said aliphatic hydrocarbyl and said aromatic hydrocarbyl, one or more methylenes are substituted by oxy, imide or carbonyl, or unsubstituted;

one or more hydrogens are substituted by fluorine, hydroxy or alkoxy, or unsubstituted; or one or more carbons are substituted by silicon, or unsubstituted,

when R 1 is divalent or trivalent, R 1 connects silicons contained in a plurality of repeating units,

here, the ratio x in all the repeating units of the general formula (Ia) is 50 mol % to 100 mol %, and the ratio y in all the repeating units of the general formula (Ib) is 0 mol % to 50 mol %,

(II) a silanol condensation catalyst which is a thermal base generator,

(III) a black colorant, and

(IV) a solvent, and

the ratio Mw/Mn of the mass average molecular weight (Mw) to the number average molecular weight (Mn) in terms of styrene is 2.5 or less, and

wherein the mass ratio of said black colorant to said siloxane polymer is in the range of the black colorant: the siloxane polymer=10:90 to 70:30.