Ink composition usable in solar battery manufacturing process, and method of forming pattern using the same

Patent metadata

Field	Value
Publication number	US-9302466-B2
Application number	US-201314126189-A
Country	US
Kind code	B2
Filing date	May 3, 2013
Priority date	May 3, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

Provided are an ink composition usable in a solar battery manufacturing process, a method of forming a pattern using the ink composition, an insulation film formed of the ink composition, and an etching mask formed of the ink composition. The ink composition includes: a) a polymerizable compound having an ethylenically unsaturated bond; b) a fluorinated surfactant; and c) a solvent, wherein the ink composition has a solid content of 45 parts by weight to 99.99 parts by weight.

First claim

The invention claimed is:

1. An ink composition usable in a solar battery manufacturing process, every 100 parts by weight of the ink composition comprising:
a) 60 parts by weight to 98 parts by weight of a polymerizable compound having an ethylenically unsaturated bond;
b) 0.01 parts by weight to 1.0 part by weight of a fluorinated surfactant; and
c) 0.001 parts by weight to 55 parts by weight of a solvent,
wherein the ink composition has a solid content of 45 parts by weight to 99.99 parts by weight based on the total weight of the ink composition.

2. An ink composition usable in a solar battery manufacturing process,
the ink composition comprising:
a) a polymerizable compound having an ethylenically unsaturated bond;
b) a fluorinated surfactant; and
c) a solvent,
wherein the ink composition has a solid content of 63 parts by weight to 99.99 parts by weight based on the total weight of the ink composition.

3. The ink composition of claim 1 , wherein the polymerizable compound having an ethylenically unsaturated bond comprises a mixture of at least two selected from the group consisting of dipentaerythritol hexaacrylate, dipropylene glycol diacrylate, trimethylolpropane triacrylate, and tripropylene glycol diacrylate.

4. The ink composition of claim 1 , wherein the fluorinated surfactant comprises polyethylene glycol and a perfluorocarbon.

5. The ink composition of claim 1 , wherein a toluene solution comprising 0.1 wt % of the fluorinated surfactant has a surface tension of 20 mN/m to 30 mN/m.

6. The ink composition of claim 1 , wherein a toluene solution comprising 0.1 wt % of the fluorinated surfactant has a surface tension of 23 mN/m to 27 mN/m.

7. The ink composition of claim 1 , wherein a propylene glycol methyl ether solution comprising 0.1 wt % of the fluorinated surfactant has a surface tension of 20 mN/m to 30 mN/m.

8. The ink composition of claim 1 , wherein a propylene glycol methyl ether solution comprising 0.1 wt % of the fluorinated surfactant has a surface tension of 24 mN/m to 28 mN/m.

9. The ink composition of claim 1 , wherein the solvent comprises at least one selected from the group consisting of diethylene glycol methyl butyl ether, diethylene glycol monobutyl ether acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether, diethylene glycol monoethyl ether acetate, dipropylene glycol methyl ether acetate, butyl lactate, ethoxyethyl acetate, ethylene glycol monobutyl ether, ethylene glycol monobutyl ether acetate, ethyl ethoxy propionate, propylene glycol methyl ether acetate, propylene glycol monoethyl ether, and propylene glycol butyl ether.

10. The ink composition of claim 1 , further comprising an adhesion promoter.

11. The ink composition of claim 10 , wherein the adhesion promoter comprises a substituent forming a silanol group through hydrolysis, or molecules of the adhesion promoter comprise a methoxy silyl group or an ethoxy silyl group, and the ink composition comprises 0.1 parts by weight to 5.0 parts by weight of the adhesion promoter based on the total weight of the ink composition.

12. The ink composition of claim 1 , further comprising at least one additive selected from the group consisting of a polymerization initiator and a binder.

13. The ink composition of claim 1 , wherein the ink composition makes contact with a glass substrate at a contact angle of 30° to 60°.

14. A method of forming a pattern, comprising:
applying the ink composition of claim 1 or claim 2 using an inkjet printer; and
thermally treating the applied ink composition at a temperature of 130° C. to 250° C.

15. The method of claim 14 , wherein the applying of the ink composition comprises heating a print head of the inkjet printer to a temperature of 40° C. to 80° C. so as to adjust viscosity of the ink composition to a range of 10 cP to 20 cP.

16. The method of claim 14 , wherein the thermal treating is performed at a temperature of 160° C. to 200° C.

17. The method of claim 14 , wherein the thermal treating is performed at a temperature of 220° C. to 250° C.

18. An etching mask formed using the ink composition of claim 1 .

19. An insulation film formed using the ink composition of claim 1 .

20. The ink composition of claim 2 , wherein every 100 parts by weight of the ink composition comprises:
a) 60 parts by weight to 98 parts by weight of the polymerizable compound having an ethylenically unsaturated bond;
b) 0.01 parts by weight to 1.0 part by weight of the fluorinated surfactant; and
c) 0.001 parts by weight to 55 parts by weight of the solvent.

Assignees

• Lg Chemical Ltd

Inventors

• Yu Min-A
• Goo Yong-Sung
• Kim Joon-Hyung

Classifications

• H10F71/121

  The active layers comprising only Group IV materials · CPC title

• H10F19/00

  Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules · CPC title

• G03F7/20

  Exposure; Apparatus therefor (photographic printing apparatus for making copies G03B27/00) · CPC title

• C09D11/101 Primary

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title