Photosensitive film, photosensitive element, cured product and touch panel

1. A touch panel, comprising:

a base material;

a sensing region including at least one electrode provided over the base material; and

a frame region provided at a periphery of the sensing region, the frame region including metal wiring provided over the base material and being electrically connected to the at least one electrode; and

a cured product of a photosensitive resin composition disposed at least on the metal wiring,

wherein the photosensitive resin composition contains a component (A): a binder polymer, a component (B): a photopolymerizable compound, and a component (C): a photopolymerization initiator; and

the component (B) includes a di(meth)acrylate compound having at least one selected from the group consisting of a dicyclopentanyl structure and a dicyclopentenyl structure.

2. The touch panel according to claim 1 , wherein the di(meth)acrylate compound is a compound represented by the following general formula (1):

wherein in the general formula (1), X represents a dicyclopentanyl structure or a dicyclopentenyl structure; R each independently represents an alkylene group having 1 to 4 carbon atoms; R 1 and R 2 each independently represent a hydrogen atom or a methyl group; and n and m each independently represent 0 to 2; and p+q is 0 to 10.

3. The touch panel according to claim 1 , wherein the di(meth)acrylate compound includes at least one compound selected from the group consisting of dimethylol tricyclodecane di(meth)acrylate and tricyclodecanediol di(meth)acrylate.

4. The touch panel according to claim 1 , wherein the photosensitive resin composition further contains at least one compound selected from the group consisting of a triazole compound, a thiadiazole compound and a tetrazole compound.

5. The touch panel according to claim 1 , wherein the component (C) includes an oxime ester compound.

6. The touch panel according to claim 5 , wherein the oxime ester compound includes a compound represented by the general formula (2) below:

wherein, in the general formula (2), R and R 1 each represent an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 4 to 10 carbon atoms, a phenyl group or a tolyl group, and R 2 represents non-substitution, OH, COOH, O(CH 2 )OH, O(CH 2 ) 2 OH, COO(CH 2 )OH or COO(CH 2 ) 2 OH.

7. The touch panel according to claim 5 , wherein the oxime ester compound includes a compound represented by the general formula (3) below:

wherein, in the general formula (3), R 3 represents an alkyl group having 1 to 6 carbon atom, R 4 represents NO 2 or ArCO, Ar represents an aryl group, R 5 and R 6 each represent an alkyl group having 1 to 12 carbon atoms, a phenyl group or a tolyl group.

8. The touch panel according to claim 5 , wherein the oxime ester compound includes a compound represented by the general formula (4) below:

wherein, in the general formula (4), R 7 represents an alkyl group having 1 to 6 carbon atoms, R 8 is an organic group having an acetal bond, R 9 and R 10 are each an alkyl group having 1 to 12 carbon atoms, a phenyl group or a tolyl group.

9. The touch panel according to claim 5 , wherein the component (C) further includes an aromatic ketone.

10. The touch panel according to claim 1 , wherein the component (A) includes a copolymer having a constituent unit derived from (meth)acrylic acid, and a constituent unit derived from alkyl (meth)acrylate.

11. The touch panel according to claim 1 , wherein acid value of the component (A) is 75 mgKOH/g or more.

12. The touch panel according to claim 1 , wherein the component (B) further includes a polyfunctional vinyl monomer having three or more ethylenically unsaturated groups.

13. The touch panel according to claim 12 , wherein a proportion of the polyfunctional vinyl monomer having three or more ethylenically unsaturated groups is 10 parts by mass or more with respect to 100 parts by mass of the component (B).

14. The touch panel according to claim 1 , wherein a content of the component (A) is 35 to 85 parts by mass and a content of the component (B) is 15 to 65 parts by mass with respect to 100 parts by mass of a total amount of the component (A) and the component (B).

15. The touch panel according to claim 1 , wherein a content of the component (C) is 0.1 to 20 parts by mass with respect to 100 parts by mass of a total amount of the component (A) and the component (B).

16. The touch panel according to claim 1 , wherein the photosensitive resin composition further contains a tetrazole compound.

17. The touch panel according to claim 1 , wherein the photosensitive resin composition further contains a phosphoric acid ester having a photopolymerizable unsaturated bond.

18. The touch panel according to claim 1 , wherein a thickness of the cured product is 10 μm or less.

19. The touch panel according to claim 1 , wherein a thickness of the cured product is 9 μm or less.

20. The touch panel according to claim 1 , wherein the metal wiring has an ITO electrode, and a copper layer formed on the ITO electrode.

21. The touch panel according to claim 1 , wherein the component (B) comprises dimethylol-tricyclodecane diacrylate or dimethylol-tricyclodecane dimethacrylate.