Patents by Inventor Sanjeev Tandon
Sanjeev Tandon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220359589Abstract: The phenomenon of charge trapping and its impact on noise performance of an imaging array using thin film transistor switches can be ameliorated by compensation techniques. One such compensation technique is a recovery process by which trapped charges are detrapped through the periodic imposition of thermal, optical, and/or bias energy. Another technique involves a shield line overlying the transistor switches and connected to the gate base to reduce the gate base resistance and hence reduce changes in the RC time constant of the gate bus.Type: ApplicationFiled: May 5, 2022Publication date: November 10, 2022Inventors: Jinhui Cho, Jerome David Crocco, Sanjeev Tandon
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Patent number: 9929215Abstract: A method of forming an organic semiconductor includes forming a thin film transistor (“TFT”) backplane; forming a pixel well over the TFT backplane using a photoresist; performing a first plasma etch of the pixel well; stripping the photoresist in the pixel well; performing a second plasma etch of the pixel well; performing a first wash of the pixel well; exposing the pixel well to ultraviolet light; performing a second wash of the pixel well; and forming an organic photodiode in the pixel well.Type: GrantFiled: April 21, 2017Date of Patent: March 27, 2018Assignee: DPIX, LLCInventors: Robert Rodriquez, Shawn Michael O'Rourke, Michael Robert Johnson, Sanjeev Tandon
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Publication number: 20180019284Abstract: A method of forming an organic semiconductor includes forming a thin film transistor (“TFT”) backplane; forming a pixel well over the TFT backplane using a photoresist; performing a first plasma etch of the pixel well; stripping the photoresist in the pixel well; performing a second plasma etch of the pixel well; performing a first wash of the pixel well; exposing the pixel well to ultraviolet light; performing a second wash of the pixel well; and forming an organic photodiode in the pixel well.Type: ApplicationFiled: April 21, 2017Publication date: January 18, 2018Inventors: Robert Rodriquez, Shawn Michael O'Rourke, Michael Robert Johnson, Sanjeev Tandon
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Publication number: 20090111284Abstract: Embodiments of the invention generally provide a method for depositing silicon-containing films. In one embodiment, a method for depositing silicon-containing material film on a substrate includes heating a substrate disposed in a processing chamber to a temperature less than about 550 degrees Celsius; flowing a nitrogen and carbon containing chemical comprising (H3C)—N?N—H into the processing chamber; flowing a silicon-containing source chemical with silicon-nitrogen bonds into the processing chamber; and depositing a silicon and nitrogen containing film on the substrate.Type: ApplicationFiled: January 5, 2009Publication date: April 30, 2009Inventors: Yaxin Wang, Yuji Maeda, Thomas C. Mele, Sean M. Seutter, Sanjeev Tandon, R. Suryanarayanan Iyer
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Patent number: 7488690Abstract: An assembly comprises a multilayer nitride stack having nitride etch stop layers formed on top of one another, each of the nitride etch stop layers is formed using a film forming process. A method of making the multilayer nitride stack includes placing a substrate in a single wafer deposition chamber and thermally shocking the substrate momentarily prior to deposition. A first nitride etch stop layer is deposited over the substrate. A second nitride etch stop layer is deposited over the first nitride etch stop layer.Type: GrantFiled: July 6, 2004Date of Patent: February 10, 2009Assignee: Applied Materials, Inc.Inventors: R. Suryanarayanan Iyer, Andrew M. Lam, Yuji Maeda, Thomas Mele, Jacob W. Smith, Sean M. Seutter, Sanjeev Tandon, Randhir P. Singh Thakur, Sunderraj Thirupapuliyur
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Patent number: 7473655Abstract: Embodiments of the invention generally provide a method for depositing silicon-containing films. In one embodiment, a method for depositing silicon-containing material film on a substrate includes flowing a nitrogen and carbon containing chemical into a deposition chamber, flowing a silicon-containing source chemical having silicon-nitrogen bonds into the processing chamber, and heating the substrate disposed in the chamber to a temperature less than about 550 degrees Celsius. In another embodiment, the silicon containing chemical is trisilylamine and the nitrogen and carbon containing chemical is (CH3)3—N.Type: GrantFiled: June 17, 2005Date of Patent: January 6, 2009Assignee: Applied Materials, Inc.Inventors: Yaxin Wang, Yuji Maeda, Thomas C. Mele, Sean M. Seutter, Sanjeev Tandon, R. Suryanarayanan Iyer
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Patent number: 7465669Abstract: Embodiments of methods for fabricating a silicon nitride stack on a semiconductor substrate are provided herein. In one embodiment, a method for fabricating a silicon nitride stack on a semiconductor substrate includes depositing a base layer including silicon nitride on the substrate using a first set of process conditions that selectively control the stress of the base layer; and depositing an upper layer including silicon nitride using a second set of process conditions that selectively control at least one of an oxidation resistance and a refractive index of the upper layer.Type: GrantFiled: November 12, 2005Date of Patent: December 16, 2008Assignee: Applied Materials, Inc.Inventors: R. Suryanarayanan Iyer, Sanjeev Tandon, Kangzhan Zhang, Rubi Lapena, Yuji Maeda
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Patent number: 7416995Abstract: A method for fabricating a multiple layer silicon nitride film on a semiconductor substrate is provided herein. In one embodiment, a method for fabricating a multiple layer silicon nitride film on a semiconductor substrate includes providing a substrate over which the multiple layer silicon nitride film is to be formed; and forming the multiple layer silicon nitride film in a single processing reactor by: (a) depositing a base layer comprising silicon nitride on the base structure; (b) depositing a middle layer comprising a stress-controlling material on the base layer; and (c) depositing a top layer comprising silicon nitride on the middle layer. The stress-controlling material selectively increases or reduces the stress of the multiple layer silicon nitride film as compared to silicon nitride alone.Type: GrantFiled: November 12, 2005Date of Patent: August 26, 2008Assignee: Applied Materials, Inc.Inventors: R. Suryanarayanan Iyer, Sanjeev Tandon, Jacob W. Smith
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Patent number: 7365029Abstract: Embodiments of the invention generally provide a method for depositing a film containing silicon (Si) and nitrogen (N). In one embodiment, the method includes heating a substrate disposed in a processing chamber to a temperature less than about 650 degrees Celsius, flowing a nitrogen-containing gas into the processing chamber, flowing a silicon-containing gas into the processing chamber, and depositing a SiN-containing layer on a substrate. The silicon-containing gas is at least one of a gas identified as NR2—Si(R?2)—Si(R?2)—NR2 (amino(di)silanes), R3—Si—N?N?N (silyl azides), R?3—Si—NR—NR2 (silyl hydrazines) or 1,3,4,5,7,8-hexamethytetrasiliazane, wherein R and R? comprise at least one functional group selected from the group of a halogen, an organic group having one or more double bonds, an organic group having one or more triple bonds, an aliphatic alkyl group, a cyclical alkyl group, an aromatic group, an organosilicon group, an alkyamino group, or a cyclic group containing N or Si.Type: GrantFiled: June 14, 2005Date of Patent: April 29, 2008Assignee: Applied Materials, Inc.Inventors: R. Suryanarayanan Iyer, Sean M. Seutter, Sanjeev Tandon, Errol Antonio C. Sanchez, Shulin Wang
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Publication number: 20080063798Abstract: The present invention generally comprises an apparatus for depositing high k dielectric or metal gate materials in which toxic, flammable, or pyrophoric precursors may be used. Exhaust conduits may be placed on the liquid precursor or solid precursor delivery cabinet, the gas panel, and the water vapor generator area. The exhaust conduits permit a technician to access the apparatus without undue exposure to toxic, pyrophoric, or flammable gases that may collect within the liquid deliver cabinet, gas panel, and water vapor generator area.Type: ApplicationFiled: August 29, 2007Publication date: March 13, 2008Inventors: Shreyas Kher, Son Nguyen, Pravin Narwankar, Sanjeev Tandon, Steve Jumper, Vincent Sermona
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Patent number: 7294581Abstract: Embodiments of methods for fabricating a spacer structure on a semiconductor substrate are provided herein. In one embodiment, a method for fabricating a spacer structure on a semiconductor substrate includes providing a substrate containing a base structure over which the spacer structure is to be formed. The spacer structure may be formed over the base structure by depositing a first layer comprising silicon nitride on the base structure, depositing a second layer comprising a silicon-based dielectric material on the first layer, and depositing a third layer comprising silicon nitride on the second layer. The first, second, and third layers are deposited in a single processing reactor.Type: GrantFiled: October 17, 2005Date of Patent: November 13, 2007Assignee: Applied Materials, Inc.Inventors: R. Suryanarayanan Iyer, Sanjeev Tandon
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Publication number: 20070111538Abstract: Embodiments of methods for fabricating a silicon nitride stack on a semiconductor substrate are provided herein. In one embodiment, a method for fabricating a silicon nitride stack on a semiconductor substrate includes depositing a base layer comprising silicon nitride on the substrate using a first set of process conditions that selectively control the stress of the base layer; and depositing an upper layer comprising silicon nitride using a second set of process conditions that selectively control at least one of an oxidation resistance and a refractive index of the upper layer.Type: ApplicationFiled: November 12, 2005Publication date: May 17, 2007Inventors: R. Iyer, Sanjeev Tandon, Kangzhan Zhang, Rubi Lapena, Yuji Maeda
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Publication number: 20070111546Abstract: A method for fabricating a multiple layer silicon nitride film on a semiconductor substrate is provided herein. In one embodiment, a method for fabricating a multiple layer silicon nitride film on a semiconductor substrate includes providing a substrate over which the multiple layer silicon nitride film is to be formed; and forming the multiple layer silicon nitride film in a single processing reactor by: (a) depositing a base layer comprising silicon nitride on the base structure; (b) depositing a middle layer comprising a stress-controlling material on the base layer; and (c) depositing a top layer comprising silicon nitride on the middle layer. The stress-controlling material selectively increases or reduces the stress of the multiple layer silicon nitride film as compared to silicon nitride alone.Type: ApplicationFiled: November 12, 2005Publication date: May 17, 2007Inventors: R. Iyer, Sanjeev Tandon, Jacob Smith
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Publication number: 20070087575Abstract: Embodiments of methods for fabricating a spacer structure on a semiconductor substrate are provided herein. In one embodiment, a method for fabricating a spacer structure on a semiconductor substrate includes providing a substrate containing a base structure over which the spacer structure is to be formed. The spacer structure may be formed over the base structure by depositing a first layer comprising silicon nitride on the base structure, depositing a second layer comprising a silicon-based dielectric material on the first layer, and depositing a third layer comprising silicon nitride on the second layer. The first, second, and third layers are deposited in a single processing reactor.Type: ApplicationFiled: October 17, 2005Publication date: April 19, 2007Inventors: R. Iyer, Sanjeev Tandon
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Publication number: 20060286818Abstract: Embodiments of the invention generally provide a method for depositing silicon-containing films. In one embodiment, a method for depositing silicon-containing material film on a substrate includes flowing a nitrogen and carbon containing chemical into a deposition chamber, flowing a silicon-containing source chemical having silicon-nitrogen bonds into the processing chamber, and heating the substrate disposed in the chamber to a temperature less than about 550 degrees Celsius. In another embodiment, the silicon containing chemical is trisilylamine and the nitrogen and carbon containing chemical is (CH3)3—N.Type: ApplicationFiled: June 17, 2005Publication date: December 21, 2006Inventors: Yaxin Wang, Yuji Maeda, Thomas Mele, Sean Seutter, Sanjeev Tandon, R. Iyer
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Publication number: 20060009041Abstract: An assembly comprises a multilayer nitride stack having nitride etch stop layers formed on top of one another, each of the nitride etch stop layers is formed using a film forming process. A method of making the multilayer nitride stack includes placing a substrate in a single wafer deposition chamber and thermally shocking the substrate momentarily prior to deposition. A first nitride etch stop layer is deposited over the substrate. A second nitride etch stop layer is deposited over the first nitride etch stop layer.Type: ApplicationFiled: July 6, 2004Publication date: January 12, 2006Inventors: R. Iyer, Andrew Lam, Yuji Maeda, Thomas Mele, Faran Nouri, Jacob Smith, Sean Seutter, Sanjeev Tandon, Randhir Singh Thakur, Sunderraj Thirupapuliyur
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Publication number: 20050255714Abstract: Embodiments of the invention generally provide a method for depositing a film containing silicon (Si) and nitrogen (N). In one embodiment, the method includes heating a substrate disposed in a processing chamber to a temperature less than about 650 degrees Celsius, flowing a nitrogen-containing gas into the processing chamber, flowing a silicon-containing gas into the processing chamber, and depositing a SiN-containing layer on a substrate. The silicon-containing gas is at least one of a gas identified as NR2—Si(R?2)—Si(R?2)—NR2 (amino(di)silanes), R3—Si—N?N?N (silyl azides), R?3—Si—NR—NR2 (silyl hydrazines) or 1,3,4,5,7,8-hexamethytetrasiliazane, wherein R and R? comprise at least one functional group selected from the group of a halogen, an organic group having one or more double bonds, an organic group having one or more triple bonds, an aliphatic alkyl group, a cyclical alkyl group, an aromatic group, an organosilicon group, an alkyamino group, or a cyclic group containing N or Si.Type: ApplicationFiled: June 14, 2005Publication date: November 17, 2005Inventors: R. Iyer, Sean Seutter, Sanjeev Tandon, Errol Sanchez, Shulin Wang
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Publication number: 20050109276Abstract: A method and apparatus for a CVD chamber that provides uniform heat distribution, efficient precursor delivery, uniform distribution of process and inert chemicals, and thermal management of residues in the chamber and exhaust surfaces by changing the mechanical design of a single wafer thermal CVD chamber. The improvements include a processing chamber comprising a chamber body and a chamber lid defining a processing region, a substrate support disposed in the processing region, a gas delivery system mounted on the chamber lid, the gas delivery system comprising a lid, an adapter ring and two blocker plates that define a gas mixing region, and a face plate fastened to the adapter ring, a heating element positioned to heat the adapter ring to a desired temperature, and a temperature controlled exhaust system.Type: ApplicationFiled: August 4, 2004Publication date: May 26, 2005Inventors: R. Iyer, Sean Seutter, Jacob Smith, Gregory Dibello, Alexander Tam, Binh Tran, Sanjeev Tandon