Nitrogen-containing Component Patents (Class 510/178)
-
Patent number: 8957005Abstract: A silicon wafer cleaning agent includes at least a water-based cleaning liquid, and a water-repellent cleaning liquid for providing water-repellent to an uneven pattern at least at recessed portions during a cleaning process. The water-repellent cleaning liquid is a liquid composed of a water-repellent compound containing a reactive moiety which is chemically bondable to Si in the silicon wafer, and a hydrophobic group, or is a liquid wherein 0.1 mass % or more of the water-repellent compound relative to the total quantity of 100 mass % of the water-repellent cleaning liquid and an organic solvent are mixed and contained therein. A cleaning process wherein a pattern collapse is easily induced can be improved by using the cleaning agent.Type: GrantFiled: September 15, 2010Date of Patent: February 17, 2015Assignee: Central Glass Company, LimitedInventors: Soichi Kumon, Masanori Saito, Takashi Saio, Hidehisa Nanai, Yoshinori Akamatsu
-
Patent number: 8940104Abstract: A cleaning composition for removing temporary wafer bonding material is provided. The cleaning composition comprises an alkylarylsulfonic acid and an aliphatic alcohol dispersed or dissolved in a hydrocarbon solvent system. Methods of separating bonded substrates and cleaning debonded substrates using the cleaning composition are also provided. The invention is particularly useful for temporary bonding materials and adhesives. The methods generally comprise contacting the bonding material with the cleaning solution for time periods sufficient to dissolve the desired amount of bonding material for separation and/or cleaning of the substrates.Type: GrantFiled: August 2, 2011Date of Patent: January 27, 2015Assignee: Brewer Science Inc.Inventors: Xing-Fu Zhong, John Moore
-
Patent number: 8790465Abstract: One embodiment of the present invention is a method of fabricating an integrated circuit. The method includes providing a substrate having a metal and dielectric damascene metallization layer and depositing substantially on the metal a cap. After deposition of the cap, the substrate is cleaned with a solution comprising an amine to provide a pH for the cleaning solution of 7 to about 13. Another embodiment of the presented invention is a method of cleaning substrates. Still another embodiment of the present invention is a formulation for a cleaning solution.Type: GrantFiled: March 22, 2013Date of Patent: July 29, 2014Assignee: Lam Research CorporationInventors: Artur Kolics, Shijian Li, Tiruchirapalli Arunagiri, William Thie
-
Patent number: 8765653Abstract: The present invention is a method of cleaning to removal residue in semiconductor manufacturing processing, comprising contacting a surface to be cleaned with an aqueous formulation having a polymer selected from the group consisting of acrylamido-methyl-propane sulfonate) polymers, acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer and mixtures thereof and a quaternary ammonium hydroxide having greater than 4 carbon atoms or choline hydroxide with a non-acetylinic surfactant. The present invention is also a post-CMP cleaning formulation having the components set forth in the method above.Type: GrantFiled: June 10, 2010Date of Patent: July 1, 2014Assignee: Air Products and Chemicals, Inc.Inventors: Dnyanesh Chandrakant Tamboli, Madhukar Bhaskara Rao, Gautam Banerjee, Keith Randolph Fabregas
-
Patent number: 8747564Abstract: A residue-removing solution for removing residues after a dry process, which includes an amine salt of a monocarboxylic acid and/or a salt of a polycarboxylic acid that forms a 7- or more-membered ring chelate with copper, and water, the residue-removing solution containing aqueous solution (A) or (B) as described herein. Also disclosed is a method for removing residues present on a semiconductor substrate after dry etching and/or ashing. Further, a method for manufacturing semiconductor devices is further disclosed, which includes subjecting a semiconductor substrate having Cu as an interconnect material, and a low dielectric constant film as an interlayer dielectric material, to dry etching and/or ashing; and bringing the processed semiconductor substrate into contact with the above residue-removing solution.Type: GrantFiled: August 4, 2009Date of Patent: June 10, 2014Assignee: Daikin Industries, Ltd.Inventor: Shingo Nakamura
-
Patent number: 8404626Abstract: One embodiment of the present invention is a method of fabricating an integrated circuit. The method includes providing a substrate having a metal and dielectric damascene metallization layer and depositing substantially on the metal a cap. After deposition of the cap, the substrate is cleaned with a solution comprising an amine to provide a pH for the cleaning solution of 7 to about 13. Another embodiment of the presented invention is a method of cleaning substrates. Still another embodiment of the present invention is a formulation for a cleaning solution.Type: GrantFiled: December 13, 2008Date of Patent: March 26, 2013Assignee: Lam Research CorporationInventors: Artur Kolics, Shijian Li, Tiruchirapalli Arunagiri, William Thie
-
Patent number: 8349213Abstract: This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.Type: GrantFiled: June 6, 2011Date of Patent: January 8, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N. Swearingen
-
Publication number: 20120264667Abstract: The present invention relates to compositions comprising fluorinated olefins or fluorinated ketones, and at least one alcohol, halocarbon, hydrofluorocarbon, or fluoroether and combinations thereof. In one embodiment, these compositions are azeotropic or azeotrope-like. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: ApplicationFiled: June 22, 2012Publication date: October 18, 2012Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: BARBARA HAVILAND MINOR, MELODIE A. SCHWEITZER
-
Patent number: 8158568Abstract: It is disclosed a cleaning liquid used in a process for forming a dual damascene structure comprising steps of etching a low dielectric layer (low-k layer) accumulated on a substrate having thereon a metallic layer to form a first etched-space; charging a sacrifice layer in the first etched-space; partially etching the low dielectric layer and the sacrifice layer to form a second etched-space connected to the first etched-space; and removing the sacrifice layer remaining in the first etched-space with the cleaning liquid, wherein the cleaning liquid comprises (a) 1-25 mass % of a quaternary ammonium hydroxide, such as TMAH and choline (b) 30-70 mass % of a water soluble organic solvent, and (c) 20-60 mass % of water.Type: GrantFiled: June 9, 2010Date of Patent: April 17, 2012Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Shigeru Yokoi, Kazumasa Wakiya
-
Patent number: 8114825Abstract: Disclosed is a photoresist stripping solution consisting essentially of (a) a quaternary ammonium hydroxide (e.g., tetramethylammonium hydroxide), (b) at least one water-soluble organic solvent selected from glycols and glycol ethers (e.g., propylene glycol, ethylene glycol, diethylene glycol monobutyl ether), and (c) a non-amine water-soluble organic solvent (e.g., dimethyl sulfoxide, N-methyl-2-pyrrolidone). The photoresist stripping solution of the invention has an excellent photoresist strippability, not causing damage of swelling/coloration to acrylic transparent films used in production of liquid-crystal panels and not causing damage to electrode materials. In particular, it has an excellent photoresist strippability to remove even a thick-film negative photoresist (photosensitive dry film) used in production of semiconductor chip packages (especially, wafer-level chip size packages, W-CSP), not causing damage to copper.Type: GrantFiled: September 30, 2009Date of Patent: February 14, 2012Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Shigeru Yokoi, Atsushi Yamanouchi
-
Patent number: 8075803Abstract: The invention relates to a method for producing ionic liquids and ionic solids which takes recourse to a novel, especially modular production process. According to the inventive method, those salts from an ionic carbonate, hydrocarbonate or monoalkyl or monoaryl carbonate precursor (cationic synthesis module) are produced that comprise the desired quaternary ammonium, phosphonium, sulfonium or the analogous quaternary heteroaromatic cation. This precursor can be produced and stored efficiently and with a high degree of purity.Type: GrantFiled: August 19, 2004Date of Patent: December 13, 2011Inventor: Roland Kalb
-
Patent number: 7994108Abstract: An aqueous-based composition and process for removing hardened photoresist and/or bottom anti-reflective coating (BARC) material from a microelectronic device having same thereon. The aqueous-based composition includes at least one chaotropic solute, at least one alkaline base, and deionized water. The composition achieves high-efficiency removal of hardened photoresist and/or BARC material in the manufacture of integrated circuitry without adverse effect to metal species on the substrate, such as copper, and without damage to low-k dielectric materials employed in the microelectronic device architecture.Type: GrantFiled: January 9, 2006Date of Patent: August 9, 2011Assignee: Advanced Technology Materials, Inc.Inventors: David W. Minsek, Weihua Wang, David D. Bernhard, Thomas H. Baum, Melissa K. Rath
-
Patent number: 7959828Abstract: This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.Type: GrantFiled: March 1, 2010Date of Patent: June 14, 2011Assignee: E. I. Du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N Swearingen
-
Patent number: 7923424Abstract: A method of cleaning a substrate includes contacting a surface of a semiconductor substrate with a composition comprising a superacid. The semiconductor substrate may be a wafer.Type: GrantFiled: February 10, 2006Date of Patent: April 12, 2011Assignee: Advanced Process Technologies, LLCInventor: Robert J. Small
-
Patent number: 7897325Abstract: The invention provides a novel rinse solution used in the step of rinse treatment of a patterned photoresist layer developed with an aqueous alkaline developer solution in a photolithographic process for the manufacture of semiconductor devices and liquid crystal display panels. The rinse solution provided by the invention is an aqueous solution of a nitrogen-containing heterocyclic compound such as imidazoline, pyridine and the like in a concentration up to 10% by mass. Optionally, the rinse solution of the invention further contains a water-miscible alcoholic or glycolic organic solvent and/or a water-soluble resin. The invention also provides a lithographic method for the formation of a patterned photoresist layer including a step of rinse treatment of an alkali-developed resist layer with the rinse solution defined above. The invention provides an improvement on the lithographic process in respect of the product quality and efficiency of the process.Type: GrantFiled: December 8, 2005Date of Patent: March 1, 2011Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Yoshihiro Sawada, Jun Koshiyama, Kazumasa Wakiya, Atsushi Miyamoto, Hidekazu Tajima
-
Patent number: 7851427Abstract: Resist stripping agents, useful for fabricating circuits and/or forming electrodes on semiconductor devices for semiconductor integrated circuits with reduced metal etch rates, particularly copper etch rates, are provided with methods for their use. The preferred stripping agents contain low concentrations of a copper salt with or without an added amine to improve solubility of the salt. Further provided are integrated circuit devices and electronic interconnect structures prepared according to these methods.Type: GrantFiled: February 1, 2010Date of Patent: December 14, 2010Assignee: Dynaloy, LLCInventors: Kimberly Dona Pollard, Michael T. Phenis
-
Publication number: 20100286015Abstract: The present invention relates to compositions comprising fluorinated olefins or fluorinated ketones, and at least one alcohol, halocarbon, hydrofluorocarbon, or fluoroether and combinations thereof. In one embodiment, these compositions are azeotropic or azeotrope-like. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: ApplicationFiled: July 22, 2010Publication date: November 11, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: BARBARA HAVILAND MINOR, Melodie A. Schweitzer
-
Publication number: 20100227786Abstract: The present invention relates to azeotropic or azeotrope-like compositions comprising a fluorinated olefin having the formula E- or Z-C3F7CH?CHC3F7, and at least one alcohol, halocarbon, hydrofluorocarbon, fluoroether, or alkanes and combinations thereof. In one embodiment, the one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, hydrofluorocarbons, alkanes is either methanol, ethanol, iso-propanol, n-propanol, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, n-propyl bromide, C4F9OCH3, C4F9OC2H5, HFC-43-10mee, HFC-365mfc, heptane, or combinations thereof. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: ApplicationFiled: May 19, 2010Publication date: September 9, 2010Applicant: E . I . DU PONT DE NEMOURS AND COMPANYInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
-
Patent number: 7744774Abstract: The present invention relates to azeotropic or azeotrope-like compositions comprising a fluorinated olefin having the formula E- or Z—C3F7CH?CHC3F7, and at least one alcohol, halocarbon, hydrofluorocarbon, fluoroether, or alkanes and combinations thereof. In one embodiment, the one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, hydrofluorocarbons, alkanes is either methanol, ethanol, iso-propanol, n-propanol, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, n-propyl bromide, C4F9OCH3, C4F9OC2H5, HFC-43-10mee, HFC-365mfc, heptane, or combinations thereof. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: GrantFiled: November 16, 2009Date of Patent: June 29, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
-
Patent number: 7700004Abstract: This invention relates to cleaning compositions comprising unsaturated fluorinated hydrocarbons. The invention further relates to use of said cleaning compositions in methods to clean, degrease, deflux, dewater, and deposit fluorolubricant. The invention further relates to novel unsaturated fluorinated hydrocarbons and their use as cleaning compositions and in the methods listed above.Type: GrantFiled: November 1, 2006Date of Patent: April 20, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N. Swearingen
-
Publication number: 20100056412Abstract: The present invention relates to azeotropic or azeotrope-like compositions comprising a fluorinated olefin having the formula E- or Z—C3F7CH?CHC3F7, and at least one alcohol, halocarbon, hydrofluorocarbon, fluoroether, or alkanes and combinations thereof. In one embodiment, the one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, hydrofluorocarbons, alkanes is either methanol, ethanol, iso-propanol, n-propanol, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, n-propyl bromide, C4F9OCH3, C4F9OC2H5, HFC-43-10mee, HFC-365mfc, heptane, or combinations thereof. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: ApplicationFiled: November 16, 2009Publication date: March 4, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
-
Patent number: 7655608Abstract: Resist stripping agents, useful for fabricating circuits and/or forming electrodes on semiconductor devices for semiconductor integrated circuits with reduced metal etch rates, particularly copper etch rates, are provided with methods for their use. The preferred stripping agents contain low concentrations of a copper or cobalt salt with or without an added amine to improve solubility of the copper or cobalt salt. Further provided are integrated circuit devices and electronic interconnect structures prepared according to these methods.Type: GrantFiled: October 30, 2007Date of Patent: February 2, 2010Assignee: Dynaloy, LLCInventors: Kimberly Dona Pollard, Michael T. Phenis
-
Patent number: 7641808Abstract: The present invention relates to azeotropic or azeotrope-like compositions comprising a fluorinated olefin having the formula E- or Z-C3F7CH?CHC3F7, and at least one alcohol, halocarbon, hydrofluorocarbon, fluoroether, or alkanes and combinations thereof. In one embodiment, the one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, hydrofluorocarbons, alkanes is either methanol, ethanol, iso-propanol, n-propanol, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, n-propyl bromide, C4F9OCH3, C4F9OC2H5, HFC-43-10mee, HFC-365mfc, heptane, or combinations thereof. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: GrantFiled: August 29, 2007Date of Patent: January 5, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
-
Patent number: 7618723Abstract: A method for producing a glass substrate for a magnetic disk by polishing a circular glass plate, which comprises a step of polishing the principal plane of the circular glass plate by using a slurry containing at least one water-soluble polymer selected from the group consisting of a water-soluble organic polymer having amino groups, a water-soluble organic polymer having amine salt groups and a water-soluble organic polymer having quaternary ammonium salt groups, and colloidal silica.Type: GrantFiled: June 20, 2007Date of Patent: November 17, 2009Assignee: Asahi Glass Company, LimitedInventors: Hiroshi Usui, Osamu Miyahara, Katsuaki Miyatani, Yoshinori Kon, Iori Yoshida
-
Publication number: 20090062170Abstract: The present invention relates to azeotropic or azeotrope-like compositions comprising a fluorinated olefin having the formula E- or Z-C3F7CH?CHC3F7, and at least one alcohol, halocarbon, hydrofluorocarbon, fluoroether, or alkanes and combinations thereof. In one embodiment, the one compound selected from the group consisting of alcohols, halocarbons, fluoroalkyl ethers, hydrofluorocarbons, alkanes is either methanol, ethanol, iso-propanol, n-propanol, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, n-propyl bromide, C4F9OCH3, C4F9OC2H5, HFC-43-10mee, HFC-365mfc, heptane, or combinations thereof. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.Type: ApplicationFiled: August 29, 2007Publication date: March 5, 2009Applicant: E.I.DUPONT DE NEMOURS AND COMPANYInventors: Melodie A. Schweitzer, Allen Capron Sievert, Joan Ellen Bartelt, Barbara Haviland Minor
-
Publication number: 20080305979Abstract: The present invention provides a cleaning agent for removing the solder flux and method for cleaning the solder flux which exhibit the excellent cleaning property even at the time of cleaning a lead-free soldering flux, a high-melting-point solder flux or the like and, at the same time, exhibits the excellent rinsing property in the rinsing using an alcoholic solvent in a next step. Accordingly, the present invention provides a cleaning agent for removing the solder flux which sets a content of benzyl alcohol to a value which falls within a range of 70 to 99.9 weight % and a content of amino alcohol to a value which falls within a range of 0.1 to 30 weight % when a content of a glycol compound is below 1 weight % with respect to a total amount of the cleaning agent for removing the solder flux, and sets a content of benzyl alcohol to a value which falls within a range of 15 to 99 weight % and a content of amino alcohol to a value which falls within a range of 0.Type: ApplicationFiled: August 5, 2008Publication date: December 11, 2008Inventors: Shigeo Hori, Hisakazu Takahashi, Hirohiko Furui, Hiroki Nakatsukasa
-
Patent number: 7365045Abstract: A cleaning solution is provided for cleaning metal-containing microelectronic substrates, particularly for post etch, via formation and post CMP cleaning. The cleaning solution consists of a quaternary ammonium hydroxide, an organic amine, and water. A preferred cleaning solution consists of tetramethylammonium hydroxide, monoethanolamine, and water. The pH of cleaning solution is greater than 10.Type: GrantFiled: March 30, 2005Date of Patent: April 29, 2008Assignee: Advanced Tehnology Materials, Inc.Inventors: Elizabeth L. Walker, Jeffrey A. Barnes, Shahriar Naghshineh, Kevin P. Yanders
-
Patent number: 7235516Abstract: A substrate surface cleaning liquid medium and a cleaning method using the cleaning liquid medium are capable of removing finely particulate contaminants more efficiently than conventional techniques from substrates for devices in the production of semiconductor devices, display devices, etc., which cleaning liquid medium contains the following ingredients (A), (B), (C), and (D), has a pH of 9 or higher, and a content of ingredient (C) of 0.01 to 4% by weight: (A) an ethylene oxide addition type surfactant which has an optionally substituted hydrocarbon group and a polyoxyethylene group in the same molecular structure and in which the ratio of the number of carbon atoms contained in the hydrocarbon group (m) to the number of oxyethylene groups in the polyoxyethylene group (n), m/n, is m/n?1.5, (B) an alkali ingredient, (C) hydrogen peroxide, and (D) water.Type: GrantFiled: November 15, 2002Date of Patent: June 26, 2007Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Morinaga, Hideaki Mochizuki, Atsushi Itou
-
Patent number: 7087564Abstract: This disclosure discusses cleaning of semiconductor wafers after the Chemical-Mechanical Planarization (CMP) of the wafer during the manufacturing of semiconductor devices. Disclosed is an acidic chemistry for the post-CMP cleaning of wafers containing metal, particularly copper, interconnects. Residual slurry particles, particularly copper or other metal particles, are removed from the wafer surface without significantly etching the metal, leaving deposits on the surface, or imparting significant organic (such as carbon) contamination to the wafer while also protecting the metal from oxidation and corrosion. Additionally, at least one strong chelating agent is present to complex metal ions in solution, facilitating the removal of metal from the dielectric and preventing re-deposition onto the wafer. Using acidic chemistry, it is possible to match the pH of the cleaning solution used after CMP to that of the last slurry used on the wafer surface.Type: GrantFiled: October 1, 2004Date of Patent: August 8, 2006Assignee: Air Liquide America, L.P.Inventors: Ashutosh Misra, Matthew L. Fisher
-
Patent number: 7051742Abstract: A composition for removing resists and etching residue from substrates containing at least one nucleophilic amine compound having oxidation and reduction potentials, at least one organic solvent, water and, optionally, a chelating agent is described. The chelating agent is preferred to be included since it provides added stability and activity to the cleaning composition so that the composition has long term effectiveness. If a chelating agent is not present, the composition, while providing for adequate stripping and cleaning upon initial use of the composition following mixing, has only short term stability. In this latter instance, the nucleophilic amine compound and organic solvent components of the composition preferably are maintained separate from each other until it is desired to use the composition. Thereafter, the components are combined. Following use of the composition, the non-used portion of the composition can be disposed of or be reactivated by the addition of a chelating agent.Type: GrantFiled: April 19, 2004Date of Patent: May 30, 2006Assignee: EKC Technology, Inc.Inventors: Wai Mun Lee, Charles U. Pittman, Jr., Robert J. Small
-
Patent number: 7026275Abstract: A method of reducing the photoelectric device leakage current caused by residual metal ions in conjugated polymer. A chelating agent is added to a conjugated polymer material, thereby the conductivity and mobility of metal ions under an electric field are reduced due to the chelation of metal ions by the chelating agent; therefore, the leakage current is reduced and the stability of devices is improved. Furthermore, the activity of metal ions is reduced after the metal ions are chelated by the chelating agent, improving the stability of the material and the devices. A conjugated polymer composition is also provided.Type: GrantFiled: August 5, 2003Date of Patent: April 11, 2006Assignee: Industrial Technology Research InstituteInventors: Kuo-Yu Chen, Chi-Shen Tuan, Wan-Jung Teng, Shinn-Jen Chang
-
Patent number: 7012051Abstract: A composition for removing resist, polymeric material and/or etching residue from a substrate comprising titanium or an alloy thereof, the composition comprising hydroxylamine or a derivative thereof and at least one compound having the general formula (I) wherein: R1 and R3 are each independently selected from H, OH, CO2H, halogen, C1–C3 alkyl, C1–C3 alkoxy or (CH2)nOH wherein n is 1, 2 or 3; and R2 is selected from C9–C16 alkyl, or C9–C16 alkoxyType: GrantFiled: April 12, 2001Date of Patent: March 14, 2006Assignee: EKC Technology, Ltd.Inventors: Jerome Daviot, Stanley Affrossman, Douglas Holmes
-
Patent number: 7001874Abstract: A non-corrosive cleaning composition for removing residues from a substrate. The composition comprises: (a) water; (b) at least one hydroxylammonium compound; (c) at least one basic compound, preferably selected from the group consisting of amines and quaternary ammonium hydroxides; (d) at least one organic carboxylic acid; and (e) optionally, a polyhydric compound. The pH of the composition is preferably between about 2 to about 6.Type: GrantFiled: May 10, 2002Date of Patent: February 21, 2006Assignee: Arch Specialty Chemicals, Inc.Inventors: Kenji Honda, Michelle Elderkin, Vincent Leon
-
Patent number: 6908892Abstract: The present invention is a photoresist remover composition used in order to remove photoresist during the manufacturing process of semiconductor devices, such as large-scale integrated circuits and very large-scale integrated circuits. The present invention comprises 2˜20 weight % of water-soluble hydroxylamine, 5˜15 weight % of oxime compound containing 2 or 3 hydroxyl groups, and 30˜55 weight % of alkyl amide. The photoresist remover composition according to the present invention can easily and quickly remove a photoresist layer that is cured by the processes of hard-bake, dry-etching, and ashing and a side-wall photoresist polymer that is produced from the lower metal film by the reaction of the photoresist with etching and ashing gases during these processes. Especially, the photoresist remover composition has a good property of removing the side-wall photoresist polymer produced from the layers of aluminum, aluminum alloy, and titanium nitride.Type: GrantFiled: June 7, 2001Date of Patent: June 21, 2005Assignee: Dongjin Semichem, Co., Ltd.Inventors: Suk-Il Yoon, Young-Woong Park, Chang-Il Oh, Sang-Dai Lee, Chong-Soon Yoo
-
Patent number: 6875288Abstract: The cleaning agent described above comprises a surfactant and an organic solvent, and the cleaning method described above is characterized by allowing the cleaning agent described above to flow on the surface of the material to be treated at a high speed to thereby clean the above surface. According to the present invention, deposits adhering firmly to a surface of a material to be treated can readily be removed without damaging the material to be treated.Type: GrantFiled: October 9, 2001Date of Patent: April 5, 2005Assignees: Tokyo Electron Limited, Mitsubishi Gas Chemical Company, Inc.Inventors: Hideto Gotoh, Takayuki Niuya, Hiroyuki Mori, Hiroshi Matsunaga, Fukusaburo Ishihara, Yoshiya Kimura, Ryuji Sotoaka, Takuya Goto, Tetsuo Aoyama, Kojiro Abe
-
Patent number: 6875733Abstract: The present invention comprises formulations for stripping wafer residues which originate from a halogen based plasma metal etching followed by oxygen plasma ashing. The formulations contain the following general components (percentages are by weight): an organic amine or mixture of amines 15-60 %, water 20-60 %, ammonium tetraborate or ammonium pentaborate 9-20 %, an optional polar organic solvent 0-15 %.Type: GrantFiled: October 14, 1998Date of Patent: April 5, 2005Assignee: Advanced Technology Materials, Inc.Inventors: William A. Wojtczak, George Guan
-
Patent number: 6852682Abstract: The present invention relates to chemical compositions and methods of use for cleaning CMP equipment, including the interiors of delivery conduits caring CMP slurry to the necessary sites. The chemical compositions of the present invention are also useful for post-CMP cleaning of the wafer itself. Three classes of cleaning compositions are described, all of which are aqueous solutions. One class operates in a preferable pH range from about 11 to about 12 and preferably contains one or more non-ionic surfactants, one or more simple amines, a surfactant or sticking agent, such as one or more soluble dialcohol organic compounds, and one or more quaternary amines. A second class of cleaning composition operates in a preferable pH range of approximately 8.5 and contains one or more of citric acid, lactic acid, and oxalic acid. A third class of compositions is acidic, having a preferable pH range from about 1.Type: GrantFiled: October 16, 2002Date of Patent: February 8, 2005Assignee: EKC Technology, Inc.Inventors: Robert J. Small, Joo-Yun Lee
-
Patent number: 6818604Abstract: The invention relates generally to a system and method for improved cleaning of workpieces and workpiece cleaning tools. More specifically, the invention provides systems and methods for cleaning workpieces and sponges by manipulating the surface charge of one or more sponges by exposing them to various cleaning fluids. In one embodiment, sponges such as PVA sponges, having either positive, negative or neutral charges, are used to clean surfaces of workpieces such as semiconductor wafers. While cleaning a workpiece, a sponge may be exposed to a workpiece cleaning fluid, which may or may not alter the surface charge of the sponge. After cleaning the workpiece, the sponge may be exposed to a sponge cleaning fluid, which may or may not alter the surface charge of the sponge.Type: GrantFiled: October 4, 2001Date of Patent: November 16, 2004Assignee: SpeedFam-IPEC CorporationInventors: Ismail Emesh, Yakov Epshteyn, Periya Gopalan, Guangshum Chen, Xingbo Yang
-
Patent number: 6773873Abstract: A semi-aqueous cleaning formulation useful for removing particles from semiconductor wafer substrates formed during a dry etching process for semiconductor devices, the cleaning formulation comprising a buffering system a polar organic solvent, and a fluoride source.Type: GrantFiled: March 25, 2002Date of Patent: August 10, 2004Assignee: Advanced Technology Materials, Inc.Inventors: Ma. Fatima Seijo, William A. Wojtczak, David Bernhard, Thomas H. Baum, David Minsek
-
Publication number: 20040147421Abstract: A new cleaning chemistry based on bis-choline and tris-choline compounds, such as their hydroxides, is provided in order to address the removal of photoresist and flux while minimizing any etching of the substrate.Type: ApplicationFiled: October 22, 2003Publication date: July 29, 2004Inventors: Richard William Charm, De-Ling Zhou, Robert J. Small, Shihying Lee
-
Publication number: 20040106532Abstract: It is disclosed a cleaning liquid for stripping and dissolving a photoresist pattern having a film thickness of 10-150 &mgr;m, which contains (a) 0.5-15 mass % of a quaternary ammonium hydroxide, such as tetrapropylammonium hydroxide and tetrabutylammonium hydroxide, (b) 65-97 mass % of a water-soluble organic solvent, such as dimethylsulfoxide or a mixed solvent thereof with N-methyl-2-pyrrolidone, sulforane, etc. and (c) 0.5-30 mass % of water, and a method for treating a substrate therewith.Type: ApplicationFiled: October 9, 2003Publication date: June 3, 2004Inventors: Shigeru Yokoi, Kazumasa Wakiya, Koji Saito
-
Publication number: 20040029753Abstract: In the present invention, the concentration of dissolved oxygen in the resist stripping liquid is limited to 3 ppm or lower. Using the resist stripping liquid having such a low dissolved oxygen concentration, resist residues are removed from a substrate containing copper and/or a copper alloy without causing the corrosion of copper.Type: ApplicationFiled: June 24, 2003Publication date: February 12, 2004Inventors: Kazuto Ikemoto, Masaru Ohto
-
Publication number: 20040018949Abstract: A two carbon atom linkage alkanolamine compound composition comprises the two carbon atom linkage alkanolamine compound, chelating agent, and optionally, an aqueous hydroxylamine solution. The balance of the composition is made up of water, preferably high purity deionized water, another suitable polar solvent, or a combination thereof. A process for removing photoresist or other residue from a substrate, such as an integrated circuit semiconductor wafer including titanium metallurgy, comprises contacting the substrate with the composition for a time and at a temperature sufficient to remove the photoresist or other residue from the substrate. Use of the two carbon atom linkage alkanolamine compound in the composition and process provides superior residue removal without attacking titanium or other metallurgy, oxide or nitride layers on the substrate.Type: ApplicationFiled: May 20, 2003Publication date: January 29, 2004Applicant: Wai Mun LeeInventor: Wai Mun Lee
-
Patent number: 6673757Abstract: Particulate and metal ion contamination is removed from a surface, such as a semiconductor wafer containing copper damascene or dual damascene features, employing aqueous composition comprising a fluoride containing compound; a dicarboxylic acid and/or salt thereof; and a hydroxycarboxylic acid and/or salt thereof.Type: GrantFiled: March 22, 2000Date of Patent: January 6, 2004Assignee: Ashland Inc.Inventor: Emil Anton Kneer
-
Patent number: 6660701Abstract: This invention relates to improved stabilizing compositions for n-propyl bromide. More particularly, the cleaning composition includes about 0.1 to 5% Butylene oxide, about 0.1 to 5.0% t-butanol, about 0.1 to 5% acetonitrile, about 0.1 to 5% nitromethane; and the remainder n-propyl bromide. These mixtures are useful as cleaning solvents for the electronic, aerospace, and general manufacturing industries, especially in the area of vapor degreasing.Type: GrantFiled: October 22, 2001Date of Patent: December 9, 2003Assignee: Polysystems USA, Inc.Inventor: Richard Degroot
-
Patent number: 6660700Abstract: A semiconductor wafer cleaning formulation, including 2-98% wt. organic amine, 0-50% wt. water, 0.1-60% wt. 1,3-dicarbonyl compound chelating agent, 0-25% wt. of additional different chelating agent(s), 0.5-40% wt. nitrogen-containing carboxylic acid or an imine, and 2-98% wt polar organic solvent. The formulations are useful to remove residue from wafers following a resist plasma ashing step, such as inorganic residue from semiconductor wafers containing delicate copper interconnecting structures.Type: GrantFiled: November 15, 2001Date of Patent: December 9, 2003Assignee: Advanced Technologies Materials, Inc.Inventors: William A. Wojtczak, Ma. Fatima Seijo, David Bernhard, Long Nguyen
-
Patent number: 6656895Abstract: A remover composition comprising (a) 100 parts by weight of a composition obtained by adding a cyclic urea compound to water, water-soluble organic solvent, or a mixture of water and water-soluble organic solvent so that the concentration of the cyclic urea compound is from 1 to 90% by weight, wherein the cyclic urea compound is represented by the following general formula (I): wherein, R1 and R2each independently represent alkyl group which may be substituted, hydrogen atom, hydroxyl group, or carboxyl group, Z represents oxygen atom or sulfur atom, (b) 0.1 to 150 parts by weight of an organic amine, and (c) 0.001 to 100 parts by weight of a salt of an amine with an acid.Type: GrantFiled: December 21, 2001Date of Patent: December 2, 2003Assignee: Sumitomo Chemical Company, LimitedInventor: Naoki Ichiki
-
Publication number: 20030216269Abstract: A method of cleaning a microelectronic substrate is carried out by providing a cleaning fluid, the cleaning fluid comprising an adduct of hydrogen fluoride with a Lewis base in a carbon dioxide solvent; and then cleaning the substrate by contacting the substrate to the cleaning fluid for a time sufficient to clean the substrate.Type: ApplicationFiled: May 15, 2002Publication date: November 20, 2003Inventors: James P. DeYoung, Stephen M. Gross, Mark I. Wagner, James B. McClain
-
Publication number: 20030207778Abstract: A cleaning solution for removing copper complex residues from the surface of polishing pads and wafer substrates includes an amine pH-adjusting agent, which can be a unidentate or bidentate amine compound or a quartnary ammonium hydroxide compound or an amine including an alcohol group. The cleaning solution also includes an amino acid complexing agent and an inhibitor. In a preferred embodiment, the cleaning solution has a basic pH.Type: ApplicationFiled: June 5, 2003Publication date: November 6, 2003Inventors: Joseph K. So, Terence M. Thomas
-
Publication number: 20030207777Abstract: An aqueous cleaning composition comprising an alkanolamine, a tetraalkylammonium hydroxide, nonmetallic fluoride salt, a corrosion inhibitor, e.g. ascorbic acid or its derivatives alone or in combination, balance water. Such cleaning compositions are effective to remove residues from plasma process generated organic, metal-organic materials, inorganic salts, oxides, hydroxides or complexes in combination with or exclusive of organic photoresist films at low temperatures with little corrosion of copper and attack of dielectric substrates.Type: ApplicationFiled: April 16, 2003Publication date: November 6, 2003Inventors: Shahriar Naghshineh, Yassaman Hashemi