Patents by Inventor Luan C. Tran

Luan C. Tran 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).

  • Publication number: 20170365617
    Abstract: Some embodiments include an integrated structure having a first opening extending through a stack of alternating insulative levels and conductive levels. A nitride structure is within the first opening and narrows the first opening to form a second opening. Detectable oxide is between the nitride structure and one or more of the conductive levels. Some embodiments include an integrated structure having a conductive material, a select device gate material over the conductive material, and vertically-stacked conductive levels over the select device gate material. A first opening extends through the vertically-stacked levels to the conductive material and has opposing sidewalls along a cross-section. Nitride liners are along the sidewalls of the first opening. Detectable oxide is between at least one of the nitride liners and one or more of the vertically-stacked conductive levels. Some embodiments include methods for forming integrated structures.
    Type: Application
    Filed: August 17, 2017
    Publication date: December 21, 2017
    Inventors: Jie Li, James Mathew, Kunal Shrotri, Luan C. Tran, Gordon A. Haller, Yangda Zhang, Hongpeng Yu, Minsoo Lee
  • Patent number: 9842847
    Abstract: Some embodiments include a string of charge storage devices formed along a vertical channel of semiconductor material; a gate region of a drain select gate (SGD) transistor, the gate region at least partially surrounding the vertical channel; a dielectric barrier formed in the gate region; a first isolation layer formed above the gate region and the dielectric barrier; a drain region of the SGD transistor formed above the vertical channel; and a second isolation layer formed above the first isolation layer and the drain region, wherein the second isolation layer includes a conductive contact in electrical contact with the drain region of the SGD transistor. Additional apparatus and methods are disclosed.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: December 12, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Hongbin Zhu, Lijing Gou, Gordon Haller, Luan C. Tran
  • Patent number: 9780102
    Abstract: Some embodiments include apparatuses and methods having a source material, a dielectric material over the source material, a select gate material over the dielectric material, a memory cell stack over the select gate material, a conductive plug located in an opening of the dielectric material and contacting a portion of the source material, and a channel material extending through the memory cell stack and the select gate material and contacting the conductive plug.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: October 3, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Fatma Arzum Simsek-Ege, Krishna K. Parat, Luan C. Tran, Meng-Wei Kuo, Yushi Hu
  • Patent number: 9773805
    Abstract: Some embodiments include an integrated structure having a first opening extending through a stack of alternating insulative levels and conductive levels. A nitride structure is within the first opening and narrows the first opening to form a second opening. Detectable oxide is between the nitride structure and one or more of the conductive levels. Some embodiments include an integrated structure having a conductive material, a select device gate material over the conductive material, and vertically-stacked conductive levels over the select device gate material. A first opening extends through the vertically-stacked levels to the conductive material and has opposing sidewalls along a cross-section. Nitride liners are along the sidewalls of the first opening. Detectable oxide is between at least one of the nitride liners and one or more of the vertically-stacked conductive levels. Some embodiments include methods for forming integrated structures.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 26, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Jie Li, James Mathew, Kunal Shrotri, Luan C. Tran, Gordon A. Haller, Yangda Zhang, Hongpeng Yu, Minsoo Lee
  • Publication number: 20170250110
    Abstract: Different portions of a continuous loop of semiconductor material are electrically isolated from one another. In some embodiments, the end of the loop is electrically isolated from mid-portions of the loop. In some embodiments, loops of semiconductor material, having two legs connected together at their ends, are formed by a pitch multiplication process in which loops of spacers are formed on sidewalls of mandrels. The mandrels are removed and a block of masking material is overlaid on at least one end of the spacer loops. In some embodiments, the blocks of masking material overlay each end of the spacer loops. The pattern defined by the spacers and the blocks are transferred to a layer of semiconductor material. The blocks electrically connect together all the loops. A select gate is formed along each leg of the loops. The blocks serve as sources/drains.
    Type: Application
    Filed: May 16, 2017
    Publication date: August 31, 2017
    Applicant: Micron Technology, Inc.
    Inventor: Luan C. Tran
  • Publication number: 20170179143
    Abstract: The present disclosure includes memory having a continuous channel, and methods of processing the same. A number of embodiments include forming a vertical stack having memory cells connected in series between a source select gate and a drain select gate, wherein forming the vertical stack includes forming a continuous channel for the source select gate, the memory cells, and the drain select gate, and removing a portion of the continuous channel for the drain select gate such that the continuous channel is thinner for the drain select gate than for the memory cells and the source select gate.
    Type: Application
    Filed: March 6, 2017
    Publication date: June 22, 2017
    Inventors: Luan C. Tran, Hongbin Zhu, John D. Hopkins, Yushi Hu
  • Patent number: 9666695
    Abstract: Different portions of a continuous loop of semiconductor material are electrically isolated from one another. In some embodiments, the end of the loop is electrically isolated from mid-portions of the loop. In some embodiments, loops of semiconductor material, having two legs connected together at their ends, are formed by a pitch multiplication process in which loops of spacers are formed on sidewalls of mandrels. The mandrels are removed and a block of masking material is overlaid on at least one end of the spacer loops. In some embodiments, the blocks of masking material overlay each end of the spacer loops. The pattern defined by the spacers and the blocks are transferred to a layer of semiconductor material. The blocks electrically connect together all the loops. A select gate is formed along each leg of the loops. The blocks serve as sources/drains.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: May 30, 2017
    Assignee: Micron Technology, Inc.
    Inventor: Luan C. Tran
  • Patent number: 9613973
    Abstract: The present disclosure includes memory having a continuous channel, and methods of processing the same. A number of embodiments include forming a vertical stack having memory cells connected in series between a source select gate and a drain select gate, wherein forming the vertical stack includes forming a continuous channel for the source select gate, the memory cells, and the drain select gate, and removing a portion of the continuous channel for the drain select gate such that the continuous channel is thinner for the drain select gate than for the memory cells and the source select gate.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: April 4, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Luan C. Tran, Hongbin Zhu, John D. Hopkins, Yushi Hu
  • Patent number: 9437480
    Abstract: Methods of fabricating semiconductor structures incorporating tight pitch contacts aligned with active area features and of simultaneously fabricating self-aligned tight pitch contacts and conductive lines using various techniques for defining patterns having sublithographic dimensions. Semiconductor structures having tight pitch contacts aligned with active area features and, optionally, aligned conductive lines are also disclosed, as are semiconductor structures with tight pitch contact holes and aligned trenches for conductive lines.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 6, 2016
    Assignee: Micron Technology, Inc.
    Inventor: Luan C. Tran
  • Publication number: 20160233225
    Abstract: Some embodiments include a string of charge storage devices formed along a vertical channel of semiconductor material; a gate region of a drain select gate (SGD) transistor, the gate region at least partially surrounding the vertical channel; a dielectric barrier formed in the gate region; a first isolation layer formed above the gate region and the dielectric barrier; a drain region of the SGD transistor formed above the vertical channel; and a second isolation layer formed above the first isolation layer and the drain region, wherein the second isolation layer includes a conductive contact in electrical contact with the drain region of the SGD transistor. Additional apparatus and methods are disclosed.
    Type: Application
    Filed: February 11, 2015
    Publication date: August 11, 2016
    Inventors: Hongbin Zhu, Lijing Gou, Gordon Haller, Luan C. Tran
  • Patent number: 9412591
    Abstract: Spacers are formed by pitch multiplication and a layer of negative photoresist is deposited on and over the spacers to form additional mask features. The deposited negative photoresist layer is patterned, thereby removing photoresist from between the spacers in some areas. During patterning, it is not necessary to direct light to the areas where negative photoresist removal is desired, and the clean removal of the negative photoresist from between the spacers is facilitated. The pattern defined by the spacers and the patterned negative photoresist is transferred to one or more underlying masking layers before being transferred to a substrate.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 9, 2016
    Assignee: Micron Technology, Inc.
    Inventor: Luan C. Tran
  • Patent number: 9412594
    Abstract: A method for defining patterns in an integrated circuit comprises defining a plurality of features in a first photoresist layer using photolithography over a first region of a substrate. The method further comprises using pitch multiplication to produce at least two features in a lower masking layer for each feature in the photoresist layer. The features in the lower masking layer include looped ends. The method further comprises covering with a second photoresist layer a second region of the substrate including the looped ends in the lower masking layer. The method further comprises etching a pattern of trenches in the substrate through the features in the lower masking layer without etching in the second region. The trenches have a trench width.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: August 9, 2016
    Assignee: Micron Technology, Inc.
    Inventors: Luan C. Tran, John Lee, Zengtao Liu, Eric Freeman, Russell Nielsen
  • Publication number: 20160172373
    Abstract: Some embodiments include a memory array which has a stack of alternating first and second levels. Channel material pillars extend through the stack, and vertically-stacked memory cell strings are along the channel material pillars. A common source is under the stack and electrically coupled to the channel material pillars. The common source has conductive protective material over and directly against metal silicide, with the conductive protective material being a composition other than metal silicide. Some embodiments include methods of fabricating integrated structures.
    Type: Application
    Filed: February 21, 2016
    Publication date: June 16, 2016
    Inventors: John M. Meldrim, Yushi Hu, Rita J. Klein, John D. Hopkins, Hongbin Zhu, Gordon A. Haller, Luan C. Tran
  • Publication number: 20160133638
    Abstract: Some embodiments include apparatuses and methods having a source material, a dielectric material over the source material, a select gate material over the dielectric material, a memory cell stack over the select gate material, a conductive plug located in an opening of the dielectric material and contacting a portion of the source material, and a channel material extending through the memory cell stack and the select gate material and contacting the conductive plug.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 12, 2016
    Inventors: Fatma Arzum Simsek-Ege, Krishna K. Parat, Luan C. Tran, Meng-Wei Kuo, Yushi Hu
  • Patent number: 9324668
    Abstract: A package includes a package component and a second package component. A first elongated bond pad is at a surface of the first package component, wherein the first elongated bond pad has a first length in a first longitudinal direction, and a first width smaller than the first length. A second elongated bond pad is at a surface of the second package component. The second elongated bond pad is bonded to the first elongated bond pad. The second elongated bond pad has a second length in a second longitudinal direction, and a second width smaller than the second width. The second longitudinal direction is un-parallel to the first longitudinal direction.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: April 26, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Luan C. Tran, Yeur-Luen Tu, Ching-Chun Wang
  • Publication number: 20160099252
    Abstract: The present disclosure includes memory having a continuous channel, and methods of processing the same. A number of embodiments include forming a vertical stack having memory cells connected in series between a source select gate and a drain select gate, wherein forming the vertical stack includes forming a continuous channel for the source select gate, the memory cells, and the drain select gate, and removing a portion of the continuous channel for the drain select gate such that the continuous channel is thinner for the drain select gate than for the memory cells and the source select gate.
    Type: Application
    Filed: August 20, 2015
    Publication date: April 7, 2016
    Inventors: Luan C. Tran, Hongbin Zhu, John D. Hopkins, Yushi Hu
  • Patent number: 9287379
    Abstract: Some embodiments include a memory array which has a stack of alternating first and second levels. Channel material pillars extend through the stack, and vertically-stacked memory cell strings are along the channel material pillars. A common source is under the stack and electrically coupled to the channel material pillars. The common source has conductive protective material over and directly against metal silicide, with the conductive protective material being a composition other than metal silicide. Some embodiments include methods of fabricating integrated structures.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: March 15, 2016
    Assignee: Micron Technology, Inc.
    Inventors: John M. Meldrim, Yushi Hu, Rita J. Klein, John D. Hopkins, Hongbin Zhu, Gordon A. Haller, Luan C. Tran
  • Patent number: 9269762
    Abstract: Embodiments of MIM capacitors may be embedded into a thick IMD layer with enough thickness (e.g., 10 K?˜30 K?) to get high capacitance, which may be on top of a thinner IMD layer. MIM capacitors may be formed among three adjacent metal layers which have two thick IMD layers separating the three adjacent metal layers. Materials such as TaN or TiN are used as bottom/top electrodes & Cu barrier. The metal layer above the thick IMD layer may act as the top electrode connection. The metal layer under the thick IMD layer may act as the bottom electrode connection. The capacitor may be of different shapes such as cylindrical shape, or a concave shape. Many kinds of materials (Si3N4, ZrO2, HfO2, BST . . . etc.) can be used as the dielectric material. The MIM capacitors are formed by one or two extra masks while forming other non-capacitor logic of the circuit.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: February 23, 2016
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kuo-Chyuan Tzeng, Luan C. Tran, Chen-Jong Wang, Kuo-Chi Tu, Hsiang-Fan Lee
  • Publication number: 20160005601
    Abstract: A method for defining patterns in an integrated circuit comprises defining a plurality of features in a first photoresist layer using photolithography over a first region of a substrate. The method further comprises using pitch multiplication to produce at least two features in a lower masking layer for each feature in the photoresist layer. The features in the lower masking layer include looped ends. The method further comprises covering with a second photoresist layer a second region of the substrate including the looped ends in the lower masking layer. The method further comprises etching a pattern of trenches in the substrate through the features in the lower masking layer without etching in the second region. The trenches have a trench width.
    Type: Application
    Filed: September 16, 2015
    Publication date: January 7, 2016
    Inventors: Luan C. Tran, John Lee, Zengtao Liu, Eric Freeman, Russell Nielsen
  • Publication number: 20150333143
    Abstract: Some embodiments include a memory array which has a stack of alternating first and second levels. Channel material pillars extend through the stack, and vertically-stacked memory cell strings are along the channel material pillars. A common source is under the stack and electrically coupled to the channel material pillars. The common source has conductive protective material over and directly against metal silicide, with the conductive protective material being a composition other than metal silicide. Some embodiments include methods of fabricating integrated structures.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 19, 2015
    Applicant: Micron Technology, Inc.
    Inventors: John M. Meldrim, Yushi Hu, Rita J. Klein, John D. Hopkins, Hongbin Zhu, Gordon A. Haller, Luan C. Tran