Patents by Inventor Chih-Chieh Cheng

Chih-Chieh Cheng 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).

  • Patent number: 9385240
    Abstract: A memory device includes a substrate, a first doped region, composite structures, word lines, and a charge storage layer. The first doped region is disposed on a surface of the substrate. The composite structures are disposed on the first doped region. Each composite structure includes two semiconductor fin structures and a dielectric layer. Each semiconductor fin structure includes a second doped region disposed at an upper portion of the semiconductor fin structure and a body region disposed between the second doped region and the first doped region. The dielectric layer is disposed between the semiconductor fin structures. The word lines are disposed on the substrate. Each word line covers a partial sidewall and a partial top of each composite structure. The charge storage layer is disposed between the composite structures and the word lines.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: July 5, 2016
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai, Nan-Heng Lu
  • Patent number: 9373629
    Abstract: A memory device is provided. The memory device includes a plurality of stack structures, a plurality of first stepped contacts, and a plurality of second stepped contacts. Each of the stack structures extends in a first direction, and includes a first semiconductor layer and a second semiconductor layer. The second semiconductor layer is disposed above the first semiconductor layer. Each of the first stepped contacts extends in a second direction, and a bottom surface thereof is electrically connected to the first semiconductor layers of an i+1th stack structure and an i+2th stack structure, wherein i is an odd number. Each of the second stepped contacts extends in the second direction, and a bottom surface thereof is electrically connected to the second semiconductor layers of an nth stack structure and the i+1th stack structure. The first direction is different from the second direction.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: June 21, 2016
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Shih-Guei Yan, Chih-Chieh Cheng, Wen-Jer Tsai
  • Patent number: 9349878
    Abstract: A memory structure includes a memory cell, and the memory cell includes following elements. A first gate is disposed on a substrate. A stacked structure includes a first dielectric structure, a channel layer, a second dielectric structure and a second gate disposed on the first gate, a first charge storage structure disposed in the first dielectric structure and a second charge storage structure disposed in the second dielectric structure. The first charge storage structure is a singular charge storage unit and the second charge storage structure comprises two charge storage units which are physically separated. A channel output line physically connected to the channel layer. A first dielectric layer is disposed on the first gate at two sides of the stacked structure. A first source or drain and a second source or drain are disposed on the first dielectric layer and located at two sides of the channel layer.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 24, 2016
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Cheng-Hsien Cheng, Wen-Jer Tsai, Shih-Guei Yan, Chih-Chieh Cheng, Jyun-Siang Huang
  • Patent number: 9269583
    Abstract: Provided is a method for fabricating a memory device, including the following steps. A plurality of semiconductor fin structures is formed on a substrate. Each semiconductor fin structure includes a first doped region and a body region on which the first doped region is disposed, and a trench is disposed between adjacent two semiconductor fin structures. A second doped region is formed in the substrate under the body regions of the semiconductor fin structures and the trenches. A plurality of first contacts are formed on the substrate. A plurality of second contacts are formed on the substrate. Each second contact is electrically connected with the corresponding first doped region.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 23, 2016
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Shih-Guei Yan, Chih-Chieh Cheng, Wen-Jer Tsai
  • Patent number: 9209316
    Abstract: A read only memory including a substrate, a source region and a drain region, a charge storage structure, a gate, and a local extreme doping region is provided. The source region and the drain region are disposed in the substrate, the charge storage structure is located on the substrate between the source region and the drain region, and the gate is configured on the charge storage structure. The local extreme doping region is located in the substrate between the source region and the drain region and includes a low doping concentration region and at least one high doping concentration region. The high doping concentration region is disposed between the low doping concentration region and one of the source region and the drain region, and a doping concentration of the high doping concentration region is three times or more than three times a doping concentration of the low doping concentration region.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: December 8, 2015
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Cheng-Hsien Cheng, Wen-Jer Tsai
  • Patent number: 9209198
    Abstract: Provided is a memory cell including a substrate, two doped regions of a first conductivity type, one doped region of a second conductivity type, two stacked structures, and a first isolation structure. The doped regions of the first conductivity type are respectively disposed in the substrate. The doped region of the second conductivity type is disposed in the substrate between the two doped regions of the first conductivity type. The stacked structures are disposed on the substrate and respectively cover the corresponding doped regions of the first conductivity type and a portion of the doped region of the second conductivity type. Each of the stacked structures includes one charge storage layer. The first isolation structure completely covers and is in contact with the bottom surface of each of the doped regions of the first conductivity type and the bottom surface of the doped region of the second conductivity type.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: December 8, 2015
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai
  • Publication number: 20150325584
    Abstract: Provided is a memory cell including a substrate, two doped regions of a first conductivity type, one doped region of a second conductivity type, two stacked structures, and a first isolation structure. The doped regions of the first conductivity type are respectively disposed in the substrate. The doped region of the second conductivity type is disposed in the substrate between the two doped regions of the first conductivity type. The stacked structures are disposed on the substrate and respectively cover the corresponding doped regions of the first conductivity type and a portion of the doped region of the second conductivity type. Each of the stacked structures includes one charge storage layer. The first isolation structure completely covers and is in contact with the bottom surface of each of the doped regions of the first conductivity type and the bottom surface of the doped region of the second conductivity type.
    Type: Application
    Filed: May 12, 2014
    Publication date: November 12, 2015
    Applicant: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai
  • Patent number: 9070588
    Abstract: A non-volatile memory structure, including a substrate, a plurality of stacked structures, a plurality of first conductive type doped regions, at least one second conductive type doped region, a conductive layer, and a first dielectric layer, is provided. The stacked structures are disposed on the substrate, and each of the stacked structures includes a charge storage structure. The first conductive type doped regions are disposed in the substrate under the corresponding charge storage structures respectively. The second conductive type doped region is disposed in the substrate between the adjacent charge storage structures and has an overlap region with each of the charge storage structures. The conductive layer covers the second conductive type doped region. The first dielectric layer is disposed between the conductive layer and the second conductive type doped region.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 30, 2015
    Assignee: MACRONIX International Co. Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai
  • Patent number: 9048263
    Abstract: A non-volatile memory and a manufacturing method thereof are provided. In this method, a first oxide layer having a protrusion is formed on a substrate. A pair of doped regions is formed in the substrate at two sides of the protrusion. A pair of charge storage spacers is formed on the sidewalls of the protrusion. A second oxide layer is formed on the first oxide layer and the pair of charge storage spacers. A conductive layer is formed on the second oxide layer, wherein the conductive layer is located completely on the top of the pair of charge storage spacers.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: June 2, 2015
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Cheng-Hsien Cheng, Wen-Jer Tsai
  • Publication number: 20150130557
    Abstract: A switch architecture having open reflective unselected ports. Signals can be selectively coupled between a common port and at least one selectable port through series connected switches. When one or more port is selected, the remaining ports are opened. In addition, associated “shuntable” switches from each of the selectable ports to ground are always open, regardless of the ON or OFF state of the series switches; thus, there is no normally active connection of the selectable ports to ground, but the presence of the shuntable switches provides electrostatic discharge protection for all ports. Embodiments of the invention allow configurability between a traditional architecture and an open reflective unselected port architecture, and include integrated circuit and field effect transistor embodiments.
    Type: Application
    Filed: September 30, 2014
    Publication date: May 14, 2015
    Inventors: Tero Tapio Ranta, Chih-Chieh Cheng
  • Patent number: 8981459
    Abstract: A semiconductor structure uses its control gate to be the wordline for receiving an operation voltage for the semiconductor structure. The semiconductor structure has a first and a second doped region and a buried channel between the first and the second doped region, wherein the buried channel has a first length along the first direction. The semiconductor structure further has a charge trapping layer stack on the buried channel and a conductive layer on the charge trapping layer stack, wherein the conductive layer extends along the first direction. The conductive layer is configured as both the control gate and the wordline of the semiconductor structure.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: March 17, 2015
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Shih-Guei Yan, Wen-Jer Tsai, Chih-Chieh Cheng
  • Publication number: 20140346586
    Abstract: A non-volatile memory structure, including a substrate, a plurality of stacked structures, a plurality of first conductive type doped regions, at least one second conductive type doped region, a conductive layer, and a first dielectric layer, is provided. The stacked structures are disposed on the substrate, and each of the stacked structures includes a charge storage structure. The first conductive type doped regions are disposed in the substrate under the corresponding charge storage structures respectively. The second conductive type doped region is disposed in the substrate between the adjacent charge storage structures and has an overlap region with each of the charge storage structures. The conductive layer covers the second conductive type doped region. The first dielectric layer is disposed between the conductive layer and the second conductive type doped region.
    Type: Application
    Filed: August 13, 2014
    Publication date: November 27, 2014
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai
  • Publication number: 20140308791
    Abstract: A non-volatile memory and a manufacturing method thereof are provided. In this method, a first oxide layer having a protrusion is formed on a substrate. A pair of doped regions is formed in the substrate at two sides of the protrusion. A pair of charge storage spacers is formed on the sidewalls of the protrusion. A second oxide layer is formed on the first oxide layer and the pair of charge storage spacers. A conductive layer is formed on the second oxide layer, wherein the conductive layer is located completely on the top of the pair of charge storage spacers.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 16, 2014
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Cheng-Hsien Cheng, Wen-Jer Tsai
  • Publication number: 20140306282
    Abstract: A memory structure includes a memory cell, and the memory cell includes following elements. A first gate is disposed on a substrate. A stacked structure includes a first dielectric structure, a channel layer, a second dielectric structure and a second gate disposed on the first gate, a first charge storage structure disposed in the first dielectric structure and a second charge storage structure disposed in the second dielectric structure. The first charge storage structure is a singular charge storage unit and the second charge storage structure comprises two charge storage units which are physically separated. A channel output line physically connected to the channel layer. A first dielectric layer is disposed on the first gate at two sides of the stacked structure. A first source or drain and a second source or drain are disposed on the first dielectric layer and located at two sides of the channel layer.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: Cheng-Hsien Cheng, Wen-Jer Tsai, Shih-Guei Yan, Chih-Chieh Cheng, Jyun-Siang Huang
  • Publication number: 20140264543
    Abstract: A semiconductor structure uses its control gate to be the wordline for receiving an operation voltage for the semiconductor structure. The semiconductor structure has a first and a second doped region and a buried channel between the first and the second doped region, wherein the buried channel has a first length along the first direction. The semiconductor structure further has a charge trapping layer stack on the buried channel and a conductive layer on the charge trapping layer stack, wherein the conductive layer extends along the first direction. The conductive layer is configured as both the control gate and the wordline of the semiconductor structure.
    Type: Application
    Filed: April 24, 2013
    Publication date: September 18, 2014
    Applicant: Macronix International Co., Ltd.
    Inventors: Shih-Guei Yan, Wen-Jer Tsai, Chih-Chieh Cheng
  • Patent number: 8835297
    Abstract: A fabricating method for fabricating a non-volatile memory structure including the following steps is provided. A first conductive type doped layer is formed in a substrate. A plurality of stacked structures is formed on the substrate, and each of the stacked structures includes a charge storage structure. A first dielectric layer is formed on the substrate between the adjacent stacked structures. A second conductive type doped region is formed in the substrate between the adjacent charge storage structures. The second conductive type doped region has an overlap region with each of the charge storage structures. In addition, the second conductive type doped region divides the first conductive type doped layer into a plurality of first conductive type doped regions that are separated from each other. A conductive layer is formed on the first dielectric layer.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 16, 2014
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai
  • Patent number: 8796754
    Abstract: A memory structure including a memory cell is provided, and the memory cell includes following elements. A first gate is disposed on a substrate. A stacked structure includes a first dielectric structure, a channel layer, a second dielectric structure and a second gate disposed on the first gate, a first charge storage structure disposed in the first dielectric structure and a second charge storage structure disposed in the second dielectric structure. At least one of the first charge storage structure and the second charge storage structure includes two charge storage units which are physically separated. A first dielectric layer is disposed on the first gate at two sides of the stacked structure. A first source and drain and a second source and drain are disposed on the first dielectric layer and located at two sides of the channel layer.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: August 5, 2014
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Cheng-Hsien Cheng, Wen-Jer Tsai, Shih-Guei Yan, Chih-Chieh Cheng, Jyun-Siang Huang
  • Publication number: 20140209992
    Abstract: A fabricating method for fabricating a non-volatile memory structure including the following steps is provided. A first conductive type doped layer is formed in a substrate. A plurality of stacked structures is formed on the substrate, and each of the stacked structures includes a charge storage structure. A first dielectric layer is formed on the substrate between the adjacent stacked structures. A second conductive type doped region is formed in the substrate between the adjacent charge storage structures. The second conductive type doped region has an overlap region with each of the charge storage structures. In addition, the second conductive type doped region divides the first conductive type doped layer into a plurality of first conductive type doped regions that are separated from each other. A conductive layer is formed on the first dielectric layer.
    Type: Application
    Filed: January 25, 2013
    Publication date: July 31, 2014
    Applicant: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Wen-Jer Tsai
  • Patent number: 8791522
    Abstract: A non-volatile memory and a manufacturing method thereof are provided. A first oxide layer having a protrusion is formed on a substrate. A pair of doped regions is formed in the substrate at two sides of the protrusion. A pair of charge storage spacers is formed on the sidewalls of the protrusion. A second oxide layer is formed on the first oxide layer and the charge storage spacers. A conductive layer is formed on the second oxide layer.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: July 29, 2014
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Chih-Chieh Cheng, Shih-Guei Yan, Cheng-Hsien Cheng, Wen-Jer Tsai
  • Patent number: 8674424
    Abstract: A memory device is described, including a gate over a substrate, a gate dielectric between the gate and the substrate, and two charge storage layers. The width of the gate is greater than that of the gate dielectric, so that two gaps are present at both sides of the gate dielectric and between the gate and the substrate. Each charge storage layer includes a body portion in one of the gaps, a first extension portion connected with the body portion and protruding out of the corresponding sidewall of the gate, and a second extension portion connected to the first extension portion and extending along the sidewall of the gate, wherein the edge of the first extension portion protrudes from the sidewall of the second extension portion.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: March 18, 2014
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Shih-Guei Yan, Wen-Jer Tsai, Chih-Chieh Cheng