Composition for forming insulating layer and insulating film

Abstract

Such a composition for forming an insulating layer improved in insulating property is to be obtained. A composition for forming an insulating layer of an electronic device is provided, and the composition contains at least one polymer selected from a polyamic acid and a derivative of a polyamic acid, and a compound having a functional group capable of reacting with a carboxyl group contained in a constitutional unit of the polymer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic cross sectional view showing an example of a structure of an electronic device according to the invention.

FIG. 2 is a schematic cross sectional view showing another example of a structure of an electronic device according to the invention.

FIG. 3 is a diagram showing a constitution of a device for evaluating a volume resistivity.

Claims

1. A composition, which is used for forming an insulating layer of an electronic device, comprising at least one polymer selected from the group consisting of a polyamic acid and a derivative of a polyamic acid, and a compound having a functional group capable of reacting with a carboxyl group contained in a constitutional unit of the polymer.

2. The composition according to claim 1, wherein the compound having a functional group capable of reacting with a carboxyl group is a compound having two or more of the functional groups in a molecule.

3. The composition according to claim 1, wherein the compound having a functional group capable of reacting with a carboxyl group is a compound having oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO in a molecule.

4. The composition according to claim 1, wherein the compound having a functional group capable of reacting with a carboxyl group is a homopolymer or a copolymer of an addition-polymerizable monomer; and the functional group is oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO.

5. The composition according to claim 1, wherein the compound having a functional group capable of reacting with a carboxyl group is an N-phenylmaleimide-glycidyl methacrylate copolymer.

6. The composition according to claim 1, wherein the polymer is at least one selected from polyamic acids obtained by reacting at least one tetracarboxylic acid derivative selected from the group consisting of tetracarboxylic dianhydrides represented by the following formulae (1) to (40) and derivatives of the tetracarboxylic dianhydrides, or a mixture of the tetracarboxylic acid derivative(s) and at least one other tetracarboxylic acid derivatives, with a diamine; and the compound having a functional group capable of reacting with a carboxyl group contained in a constitutional unit of the polymer is a compound having oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO in a molecule:

7. The composition according to claim 6, wherein the compound having a functional group capable of reacting with a carboxyl group is a homopolymer or a copolymer of an addition-polymerizable monomer; and the functional group is oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO.

8. The composition according to claim 6, wherein the compound having a functional group capable of reacting with a carboxyl group is an N-phenylmaleimide-glycidyl methacrylate copolymer.

9. The composition according to claim 1, wherein the polymer is at least one selected from polyamic acids obtained by reacting at least one tetracarboxylic acid derivative selected from the group consisting of tetracarboxylic dianhydrides represented by the following formulae (1) to (58) and derivatives of the tetracarboxylic dianhydrides, with at least one diamine having a side chain or a mixture of the diamine(s) and at least one diamine having no side chain; and the compound having a functional group capable of reacting with a carboxyl group contained in a constitutional unit of the polymer is a compound having oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO in a molecule:

10. The composition according to claim 9, wherein the compound having a functional group capable of reacting with a carboxyl group is a homopolymer or a copolymer of an addition-polymerizable monomer; and the functional group is oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO.

11. The composition according to claim 9, wherein the compound having a functional group capable of reacting with a carboxyl group is an N-phenylmaleimide-glycidyl methacrylate copolymer.

12. The composition according to claim 1, wherein the polymer is at least one selected from polyamic acids obtained by reacting at least one tetracarboxylic acid derivative selected from the group consisting of tetracarboxylic dianhydrides represented by the following formulae (1) to (58) and derivatives of the tetracarboxylic dianhydrides, with at least one diamine, which has a side chain, selected from the group consisting of compounds represented by the following formulae (I) to (V), or a mixture of the diamine(s) and at least one diamine having no side chain; and the compound having a functional group capable of reacting with a carboxyl group contained in a constitutional unit of the polymer is a compound having oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO in a molecule:

13. The composition according to claim 12, wherein the compound having a functional group capable of reacting with a carboxyl group is a homopolymer or a copolymer of an addition-polymerizable monomer; and the functional group is oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO.

14. The composition according to claim 12, wherein the compound having a functional group capable of reacting with a carboxyl group is an N-phenylmaleimide-glycidyl methacrylate copolymer.

15. The composition according to claim 1, wherein the polymer is a mixture of a polyamic acid obtained by reacting at least one tetracarboxylic acid derivative selected from the group consisting of tetracarboxylic dianhydrides represented by the following formulae (1) to (40) and derivatives of the tetracarboxylic dianhydrides, or a mixture of the tetracarboxylic acid derivative(s) and at least one other tetracarboxylic acid derivatives, with a diamine, and a polyamic acid obtained by reacting at least one tetracarboxylic acid derivative selected from the group consisting of tetracarboxylic dianhydrides represented by the following formulae (1) to (58) and derivatives of the tetracarboxylic dianhydrides, with at least one diamine, which has a side chain, selected from the group consisting of compounds represented by the following formulae (I) to (V), or a mixture of the diamine(s) and at least one diamine having no side chain; and the compound having a functional group capable of reacting with a carboxyl group contained in a constitutional unit of the polymer is a compound having oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO in a molecule:

16. The composition according to claim 15, wherein the compound having a functional group capable of reacting with a carboxyl group is a homopolymer or a copolymer of an addition-polymerizable monomer; and the functional group is oxiranyl, oxiranylene, oxetanyl, thiiranyl, aziridinyl, oxazolinyl or —NCO.

17. The composition according to claim 15, wherein the compound having a functional group capable of reacting with a carboxyl group is an N-phenylmaleimide-glycidyl methacrylate copolymer.

18. The composition according to claim 15, wherein the polymer is a mixture of a polyamic acid obtained by reacting at least one tetracarboxylic dianhydride represented by the formulae (1) to (40) with a diamine, and a polyamic acid obtained by reacting at least one tetracarboxylic dianhydride represented by the formulae (1) to (58) with at least one diamine represented by the formula (I).

19. The composition according to claim 15, wherein the polymer is a mixture of a polyamic acid obtained by reacting a tetracarboxylic dianhydride represented by the formula (1) and a tetracarboxylic dianhydride represented by the formula (7) with 4,4′-diaminodiphenylmethane, and a polyamic acid obtained by reacting a tetracarboxylic dianhydride represented by the formula (1) with a diamine represented by the following formula (I-25):

20. A thin film obtained by using the composition according to claim 1.

21. An insulating layer provided on a substrate by using the composition according to claim 1.

22. An electronic device containing the insulating layer according to claim 21.