Organic processing liquid for patterning chemical amplification resist film, container for organic processing liquid for patterning chemical amplification resist film, and pattern forming method, method of manufacturing electronic device, and electronic device using the same

1. A pattern forming method comprising:

(A) forming a film from a chemical amplification resist composition by applying the chemical amplification resist composition on a substrate;

(B) pattern exposing the film; and

(C) developing the exposed film using an organic developer, the organic developer being butyl acetate,

wherein the organic developer contains 1 ppm or less of alkylolefin having a carbon number of 22 or less, and 5 ppm or less of metal element concentration of each of Na, K, Ca, Fe, Cu, Mg, Mn, Li, Al, Cr, Ni and Zn;

the organic developer is stored in a container before developing, the container having an inner wall contacting with the organic developer, the inner wall being made from a perfluoro resin; and

the organic developer is filtered through a polytetrafluoroethylene filter before the developing step (C).

2. The pattern forming method according to claim 1 , further comprising:

performing a washing by using an organic rinsing liquid after the developing of the exposed film using the organic developer,

wherein the organic rinsing liquid is the organic processing liquid containing 1 ppm or less of alkylolefin having, a carbon number of 22 or less, and 5 ppm or less of a metal element concentration of each of Na, K, Ca, Fe, Cu, Mg, Mn, Li, Al, Cr, Ni, and Zn.

3. The pattern forming method according to claim 2 ,

wherein the organic developer and the organic rinsing liquid is an organic processing liquid for patterning a chemical amplification resist film, containing 1 ppm or less of alkylolefin having a carbon number of 22 or less, and 5 ppm or less of a metal element concentration of each of Na, K, Ca, Fe, Cu, Mg, Mn, Li, Al, Cr, Ni, and Zn, and

the organic rinsing liquid is 4-methyl-2-pentanol or butyl acetate.

4. The pattern forming method according to claim 2 , wherein the organic rinsing liquid is stored in a second container before performing a washing, the second container having an inner wall contacting with the organic rinsing liquid, the inner wall being made from a perfluoro resin; and

the rinsing liquid is filtered through a polytetrafluoroethylene tetrafluoroethylene filter before performing the washing.

5. The pattern forming method according to claim 2 , wherein the organic rinsing liquid contains at least one selected from the group consisting of a ketone-based solvent, an ester-based solvent, an alcohol-based solvent, an amide-based solvent and an ether based solvent.

6. The pattern forming method according to claim 2 , wherein the organic rinsing liquid is 4-methyl-2-pentanol or butyl acetate.

7. The pattern forming method according to claim 1 ,

wherein the developing of the exposed film using the organic developer is performed by using a developing apparatus mounted with a filter for a processing liquid, and

the organic developer passes through the filter for the processing liquid.

8. A method of manufacturing an electronic device, the method comprising the pattern forming method according to claim 1 .

9. An electronic device manufactured by the method according to claim 8 .

10. The pattern forming method according to claim 1 ,

wherein the polytetrafluoroethylene filter has a pore size of 0.1 μm or less.

11. The pattern forming method according to claim 1 ,

wherein the polytetrafluoroethylene filter has a pore size of 0.05 μm or less.

12. The pattern forming method according to claim 1 ,

wherein the organic developer is stored in a container for one or more days before developing.