Method of photoresist removal in the presence of a...

Etching a substrate: processes – Gas phase etching of substrate – Application of energy to the gaseous etchant or to the...

Reexamination Certificate

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C216S069000, C438S725000, C438S727000, C438S731000

Reexamination Certificate

active

06991739

ABSTRACT:
A method of photoresist removal is described. A substrate is located in a processing chamber. A mixture of gases is excited, the mixture comprising a majority component of a reducing process gas and a minority component of between 0.1% and 10% by volume of an oxidizing process gas. Reactive gas species are thereby generated. A photoresist layer with an exposed dielectric layer on the substrate in the chamber is then exposed to the reactive gas mixture to selectively remove the photoresist layer from the dielectric layer.

REFERENCES:
patent: 4431898 (1984-02-01), Reinberg et al.
patent: 5174856 (1992-12-01), Hwang et al.
patent: 5200031 (1993-04-01), Latchford et al.
patent: 5221424 (1993-06-01), Rhoades
patent: 5385624 (1995-01-01), Amemiya et al.
patent: 5403436 (1995-04-01), Fujimura et al.
patent: 5545289 (1996-08-01), Chen et al.
patent: 5773201 (1998-06-01), Fujimura et al.
patent: 5968275 (1999-10-01), Lee et al.
patent: 6007671 (1999-12-01), Fujimura et al.
patent: 6024045 (2000-02-01), Kikuchi et al.
patent: 6150628 (2000-11-01), Smith et al.
patent: 6203657 (2001-03-01), Collison et al.
patent: 6235453 (2001-05-01), You et al.
patent: 2001/0024769 (2001-09-01), Donoghue et al.
patent: 2002/0185151 (2002-12-01), Qingyuan et al.
patent: 0 463 870 (1992-01-01), None
patent: WO 01/11650 (2001-02-01), None
Kikuchi, et al., “Effects of H2O on Atomic Hydrogen Generation in Hydrogen Plasma,” Jun. 1993,Jpn. J. Appl Phys.vol. 32 (1993) Part 1, No. 6B, pp. 3120-3124.
Chang, et al., “Suppression of Copper Diffusion Through Barrier Metal-Free Hydrogen Silsesquioxane Dielectrics by NH3Plasma Treatment,” Jun. 2, 1999,Electrochemical and Solid State Letters, pp 634-636.
Nakagawa, et al., “RIE-Lag-Less Etching by CH4/N2Plasma for Organic Low-k Dielectric,” 2000, 2000Dry Process Symposium, ULSI Process Technology Development Center, Semiconductor Company, Matsushita Electronics Corp., *In stitute for Semiconductor Technologies, ULVAC Japan Ltd., pp. 257-262.
Morikawa, et al., “Organic Low-k Etching Process in Low Pressure and High Density NLD Plasma”, 2000, 2000Dry Process Symposium, pp. 263-268.
Janowiak, et al., “Etching of organic low dielectric constant material SiLK™ on the Lam Research Corporation 4520XLE™,” J. Vac. Sci. Technol., Jul./Aug. 2000, 2000American Vacuum Society, pp. 1859-1863.
Chang, et al., “The Novel Improvement of Low Dielectric Constant Methylsilsesquioxane by N2O Plasma Treatment,” Journal of The Electrochemical Society, Oct. 20, 1998, pp. 3802-3806.
Louis, et al., “Improved Post Etch Cleaning for low-k and copper integration for 0.18 μm Technology,” Microelectronic Engineering 46(1999), pp. 307-310.
Kikuchi, et al., “Native Oxide Removal on Si Surfaces by NF3-Added Hydrogen and Water Vapor Plasma Downstream Treatment,” Jpn. J. Appl. Phys.vol. 33 (1994), Part 1, No. 4B, Apr. 1994, pp. 2207-2211.
Kikuchi, et al., “Cleaning of Silicon Surfaces by NF3- Added Hydrogen and Water-Vapor Plasma Downstream Treatment,” Jpn J. Appl. Phys.vol. 35 (1996), Part 1, No. 2B, Feb. 1996, pp. 1022-1026.

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