Apparatus for processing substrate and method of doing the same

a technology of apparatus and substrate, applied in the direction of photomechanical apparatus, photosensitive material processing, instruments, etc., can solve the problems of resist pattern associated with portions other than channels, such as wirings, being much fused and deformed, and not suggesting an effective apparatus and method for doing, etc., to achieve accurate control of the deformation of organic film patterns

Inactive Publication Date: 2007-11-29
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an apparatus and method for processing a substrate with an organic film pattern that can prevent the pattern from having unnecessary areas and accurately control the deformation of the pattern. This is achieved by carrying out a fusion / deformation step and then removing or contracting the excess portion of the pattern using a chemical solution. The invention also includes a chemical solution that can effectively remove or contract the excess portion of the pattern. The method and apparatus can be used to reduce the number of photolithography steps and improve the accuracy of the pattern.

Problems solved by technology

However, if “chemical-solution fusion reflow” is carried out so much, a resist pattern associated with portions other than a channel, such as wirings, would be much fused and deformed.
Though there is a need for a process which is capable of reducing costs and saving energies and resources, there were not suggested an effective apparatus and method for doing so.

Method used

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  • Apparatus for processing substrate and method of doing the same
  • Apparatus for processing substrate and method of doing the same
  • Apparatus for processing substrate and method of doing the same

Examples

Experimental program
Comparison scheme
Effect test

first example

[0316]Hereinbelow is explained the method of a processing a substrate, in accordance with First Example.

[0317]The method in accordance with First Example is carried out for the following purposes (a) to (c):

[0318](a) when an underlying film (for instance, a substrate) is etched with an organic film pattern (for instance, a resist film) being used as a mask, the underlying film is etched to be tapered (for instance, see Japanese Patent Application Publication No. 2002-334830), or etched in a minute size (an organic film pattern is enlarged with respect to an area, or a contact hole is reduced with respect to a size to thereby reduce an etching size);

[0319](b) when an underlying film (for instance, a substrate) is etched with an organic film pattern (for instance, a resist film) being used as a mask, the underlying film is etched into a two-layered structure, two patterns different from each other, or a combination of a separate pattern and combined patterns (for instance, see FIGS. 2...

second example

[0511]The method in accordance with Second Example is explained hereinbelow.

[0512]The method in accordance with Second Example is carried out for the above-mentioned purposes (A) to (C), similarly to First Example. In other words, the method in accordance with Second Example relates to steps of processing an organic film pattern for the purposes (A) to (C).

[0513]FIG. 1B is a flow chart showing steps to be carried out in the method in accordance with Second Example.

[0514]As illustrated in FIG. 1B, the method includes, in sequence of, a first removal step J1, a first heating step S9 of heating a substrate and therefore an organic film pattern, a substrate-temperature controlling step S2 of controlling a temperature of the substrate and therefore the organic film pattern, a gas-atmosphere applying step S3 of applying gas atmosphere to the organic film pattern, a second heating step S4 of heating the substrate and therefore the organic film pattern, a second substrate-temperature contro...

third example

[0571]The method in accordance with Third Example is explained hereinbelow.

[0572]The method in accordance with Third Example is carried out for the above-mentioned purposes (A) to (C), similarly to First Example. In other words, the method in accordance with Third Example relates to steps of processing an organic film pattern for the purposes (A) to (C).

[0573]FIG. 1C is a flow chart showing steps to be carried out in the method in accordance with Third Example.

[0574]As illustrated in FIG. 1C, the method includes, in sequence of, a first removal step J1, a second removal step J2, a first heating step S9 of heating a substrate and therefore an organic film pattern, a substrate-temperature controlling step S2 of controlling a temperature of the substrate and therefore the organic film pattern, a gas-atmosphere applying step S3 of applying gas atmosphere to the organic film pattern, a second heating step S4 of heating the substrate and therefore the organic film pattern, a second substr...

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Abstract

An apparatus for processing a substrate includes a gas-atmosphere applying unit for applying gas atmosphere to the substrate, and a light-exposure unit for exposing the substrate to light through a lower surface of the substrate.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an apparatus for processing a substrate, a method of doing the same, and chemical solution to be used in the method.[0003]2. Description of the Related Art[0004]A wiring in a circuit has been conventionally formed, for instance, by forming an organic film pattern on a semiconductor wafer, a liquid crystal display (LCD) substrate or other substrates, and etching a film underlying the organic film pattern, that is, the substrate with the organic film pattern being used as a mask to thereby pattern the underlying film. After the underlying film has been patterned, the organic film pattern is removed.[0005]For instance, Japanese Patent Application Publications Nos. 2002-202619, 2002-334830, 2005-159292, 2005-159342, and 2005-159293 have suggested a method of processing an organic film pattern, including processing an underlying film, deforming an organic film pattern, etching the underlying ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C23F1/00H01L21/306
CPCG03F7/2022G03F7/40H01L27/1288H01L21/67225H01L29/66765H01L21/0273
InventorKIDO, SHUSAKU
OwnerNEC CORP