Patents by Inventor Der-Tsyr Fan

Der-Tsyr Fan 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: 20240304692
    Abstract: A non-volatile memory device includes at least one memory cell, and the memory cell includes a substrate, a select gate, a floating gate, a floating gate cap layer, and an erase gate. The select gate is disposed on the substrate. The floating gate is disposed on the substrate and laterally spaced apart from the select gate, where the floating gate includes top edges forming a closed shape as viewed from a top-down perspective. The floating gate cap layer is disposed on a top surface of the floating gate, where an area of a top surface of the floating gate cap layer is less than an area of a bottom surface of the floating gate. The erase gate is disposed on the floating gate, and one or more of the top edges are covered with the erase gate. A control gate is covered with the erase gate.
    Type: Application
    Filed: July 27, 2023
    Publication date: September 12, 2024
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng, Yu-Ming Cheng
  • Publication number: 20240274682
    Abstract: A non-volatile memory device includes at least one memory cell including a substrate, an assist gate, a byte select gate, a floating gate, and an upper gate. The substrate includes a first doped region and a second doped region. The assist gate is disposed on the substrate and adjacent to the second doped region. The byte select gate is disposed on the substrate and adjacent to the first doped region. The floating gate is disposed on the substrate and between the assist gate and byte select gate, and the floating gate includes an upper edge higher than top surfaces of the assist gate and the byte select gate. The upper gate covers the assist gate and the floating gate, and the upper gate is spaced apart from the byte select gate. The upper edge of the floating gate is embedded in the upper gate.
    Type: Application
    Filed: February 13, 2023
    Publication date: August 15, 2024
    Applicant: IOTMEMORY TECHNOLOGY INC.
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng, Yu-Ming Cheng
  • Publication number: 20240162315
    Abstract: A non-volatile memory device includes at least one memory cell, and the memory cell includes a substrate, an assist gate structure, a tunneling dielectric layer, a floating gate, and an upper gate structure. The assist gate structure is disposed on the substrate. The floating gate includes two opposite first top edges arranged along a first direction, two opposite first sidewalls arranged along the first direction, and two opposite second sidewalls arranged along a second direction different from the first direction. The upper gate structure covers the assist gate structure and the floating gate, where at least one of the first top edges of the floating gate is embedded in the upper gate structure. Portions of the upper gate structure extend beyond the second sidewalls of the floating gate in the second direction, and the portions of the upper gate structure are disposed above the substrate.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 16, 2024
    Applicant: IOTMEMORY TECHNOLOGY INC.
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng, Yu-Ming Cheng
  • Publication number: 20240162316
    Abstract: A non-volatile memory device includes at least one memory cell and the memory cell includes a substrate, a select gate, a control gate, a floating gate, and an erase gate. The select gate is disposed on the substrate, and the control gate is disposed on the substrate and laterally spaced apart from the select gate. The control gate comprises a non-vertical surface. The floating gate includes a vertical portion and a horizontal portion. The vertical portion disposed between the select gate and the control gate and includes a first top tip laterally spaced apart from the control gate. The horizontal portion is disposed between the substrate and the control gate, where the horizontal portion includes a lateral tip laterally and vertically spaced apart from the control gate. The erase gate covers the non-vertical surface of the control gate and the lateral tip of the horizontal portion of the floating gate.
    Type: Application
    Filed: October 6, 2023
    Publication date: May 16, 2024
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng, Yu-Ming Cheng
  • Publication number: 20240162317
    Abstract: A non-volatile memory device includes a memory cell including a substrate, a select gate, a control gate, a planar floating gate, a coupling dielectric layer, an erase gate dielectric layer, and an erase gate. The select gate and the control gate are disposed on the substrate and laterally spaced apart from each other, and the control gate includes a non-vertical surface. The planar floating gate includes a lateral tip laterally spaced apart from the control gate. The coupling dielectric layer includes a first thickness (T1). The erase gate dielectric layer covers the non-vertical surface of the control gate and the lateral tip of the planar floating gate, and includes a second thickness (T2). The erase gate covers the erase gate dielectric layer and the lateral tip of the planar floating gate. The first thickness and the second thickness satisfy the following relation: (T2)<(T1)<2(T2).
    Type: Application
    Filed: October 20, 2023
    Publication date: May 16, 2024
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng, Yu-Ming Cheng, Chen-Ming Tsai
  • Publication number: 20230320088
    Abstract: A non-volatile memory device includes at least one memory cell, and the at least one memory cell includes a substrate, a stacked structure, a tunneling dielectric layer, a floating gate, a control gate structure, and an erase gate structure. The stacked structure is disposed on the substrate, and includes a gate dielectric layer, an assist gate, and an insulation layer stacked in order. The tunneling dielectric layer is disposed on the substrate at one side of the stacked structure. The floating gate is disposed on the tunneling dielectric layer and includes an uppermost edge and a curved sidewall. The control gate structure covers the curved sidewall of the floating gate. The erase gate structure covers the floating gate and the control gate structure, and the uppermost edge of the floating gate is embedded in the erase gate structure.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 5, 2023
    Applicant: IOTMEMORY TECHNOLOGY INC.
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Tzung-Wen Cheng
  • Publication number: 20230232623
    Abstract: A method of manufacturing a non-volatile memory includes the following steps. A stacked structure is formed on a substrate and includes a gate dielectric layer, an assist gate, an insulation layer, and a sacrificial layer stacked in order. A tunneling dielectric layer is formed at one side of the stacked structure. A floating gate is formed on the tunneling dielectric layer. The stacked structure is etched until an uppermost edge of the floating gate is higher than a top surface of the insulation layer. A dielectric material layer is formed to cover sidewalls of the floating gate. The dielectric material layer is etched to form an etched dielectric material layer and expose the uppermost edge of the floating gate. An upper gate structure is formed on the etched dielectric material layer, where a portion of the etched dielectric material layer is disposed between the upper gate structure and the substrate.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 20, 2023
    Applicant: IOTMEMORY TECHNOLOGY INC.
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Chen-Ming Tsai, Yu-Ming Cheng
  • Publication number: 20200152646
    Abstract: A non-volatile memory having memory cells is provided. The memory cell includes a source region and a drain region, a select gate, a dummy select gate, a floating gate, an erase gate, and a control gate. The select gate is disposed on the substrate between the source region and the drain region. The floating gate is disposed on the substrate between the select gate and the source region, and a top portion of the floating gate has corners in symmetry. The height of the floating gate is lower than the height of the select gate. The erase gate is provided on the source region and covers the corner at the side of the source. The control gate is disposed on the erase gate and the floating gate.
    Type: Application
    Filed: March 20, 2019
    Publication date: May 14, 2020
    Applicant: IoTMemory Technology Inc.
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Yu-Ming Cheng
  • Patent number: 10644011
    Abstract: A non-volatile memory having memory cells is provided. The memory cell includes a source region and a drain region, a select gate, a dummy select gate, a floating gate, an erase gate, and a control gate. The select gate is disposed on the substrate between the source region and the drain region. The floating gate is disposed on the substrate between the select gate and the source region, and a top portion of the floating gate has corners in symmetry. The height of the floating gate is lower than the height of the select gate. The erase gate is provided on the source region and covers the corner at the side of the source. The control gate is disposed on the erase gate and the floating gate.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: May 5, 2020
    Assignee: IoTMemory Technology Inc.
    Inventors: Der-Tsyr Fan, I-Hsin Huang, Yu-Ming Cheng
  • Patent number: 9673338
    Abstract: A non-volatile memory unit and method of manufacturing the same are disclosed. The non-volatile memory unit includes a substrate with a source region and a drain region. A first dielectric layer forms on the substrate. An erase gate, a floating gate and couple control gate are forms on the first dielectric layer. The second dielectric layer and coupled dielectric layer are formed among and above the erase gate, the floating gate and the selective gate, and formed on the couple control gate of the coupled dielectric layer.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: June 6, 2017
    Assignee: XINNOVA TECHNOLOGY LIMITED
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu
  • Patent number: 9647143
    Abstract: A non-volatile memory unit and method of manufacturing the same are disclosed. The non-volatile memory unit includes a substrate with a source region and a drain region. A first dielectric layer forms on the substrate. An erase gate, a floating gate and couple control gate are forms on the first dielectric layer. The coupled dielectric layer are formed among and above the erase gate, the floating gate and the selective gate, and formed on the couple gate of the coupled dielectric layer.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 9, 2017
    Assignee: XINNOVA TECHNOLOGY LIMITED
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu
  • Patent number: 9640403
    Abstract: A low electric field source erasable non-volatile memory unit includes a substrate having a source diffusion region and a drain diffusion region. The source diffusion region includes a heavily-doped region and a lightly-doped region extending. A first dielectric layer and a tunnel dielectric layer are formed on the substrate. The tunnel dielectric layer includes a lower face contiguous to or partially overlapped with the lightly-doped region of the source diffusion region. A select gate and a floating gate are respectively formed on the first dielectric layer and the tunnel dielectric layer. The floating gate includes a source side edge contiguous to or partially overlapped with the lightly-doped region and misaligned from the heavily-doped region by a distance. A second dielectric layer and a control gate are formed on the floating gate. The control gate and the floating gate are insulating to each other by the second dielectric layer.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: May 2, 2017
    Assignee: Xinnova Technology Ltd.
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu
  • Patent number: 9502582
    Abstract: A non-volatile memory unit includes a substrate, a first dielectric layer, an erase gate, a floating gate, a second dielectric layer, a coupled dielectric layer and a couple control gate. The substrate has a source region and a drain region, and the first dielectric layer is formed on the substrate. The erase gate, the floating gate, the second dielectric layer and the selective gate are formed on the first dielectric layer. The second dielectric layer and coupled dielectric layer are formed among and above the erase gate, the floating gate and the selective gate, and the couple control gate is formed on the coupled dielectric layer.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: November 22, 2016
    Assignee: XINNOVA TECHNOLOGY LIMITED
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu
  • Patent number: 9502513
    Abstract: This disclosure discloses a non-volatile memory component and a manufacture method of the same. The non-volatile memory component includes a substrate, a first dielectric layer on the substrate, an erase gate (EG), a floating gate (FG) and a select gate (EG). The substrate includes a source region and a drain region. The erase gate (EG), the floating gate (FG) and the select gate (EG) are formed on the first dielectric layer. Additionally, non-volatile memory component includes a coupling dielectric layer formed in the intervals and the upper region of the erase gate (EG), the floating gate (FG) and the select gate (SG), and a coupling gate (CG) formed on the coupling dielectric layer.
    Type: Grant
    Filed: January 30, 2016
    Date of Patent: November 22, 2016
    Assignee: XINNOVA TECHNOLOGY LIMITED
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu
  • Publication number: 20160240622
    Abstract: This disclosure discloses a non-volatile memory component and a manufacture method of the same. The non-volatile memory component includes a substrate, a first dielectric layer on the substrate, an erase gate (EG), a floating gate (FG) and a select gate (EG). The substrate includes a source region and a drain region. The erase gate (EG), the floating gate (FG) and the select gate (EG) are formed on the first dielectric layer. Additionally, non-volatile memory component includes a coupling dielectric layer formed in the intervals and the upper region of the erase gate (EG), the floating gate (FG) and the select gate (SG), and a coupling gate (CG) formed on the coupling dielectric layer.
    Type: Application
    Filed: January 30, 2016
    Publication date: August 18, 2016
    Inventors: DER-TSYR FAN, CHIH-MING CHEN, JUNG-CHANG LU
  • Publication number: 20160204274
    Abstract: A non-volatile memory unit and method of manufacturing the same are disclosed. The non-volatile memory unit includes a substrate with a source region and a drain region. A first dielectric layer forms on the substrate. An erase gate, a floating gate and couple control gate are forms on the first dielectric layer. The coupled dielectric layer are formed among and above the erase gate, the floating gate and the selective gate, and formed on the couple gate of the coupled dielectric layer.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Inventors: DER-TSYR FAN, CHIH-MING CHEN, JUNG-CHANG LU
  • Publication number: 20160204273
    Abstract: A non-volatile memory unit and method of manufacturing the same are disclosed. The non-volatile memory unit includes a substrate with a source region and a drain region. A first dielectric layer forms on the substrate. An erase gate, a floating gate and couple control gate are forms on the first dielectric layer. The second dielectric layer and coupled dielectric layer are formed among and above the erase gate, the floating gate and the selective gate, and formed on the couple control gate of the coupled dielectric layer.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Inventors: DER-TSYR FAN, CHIH-MING CHEN, JUNG-CHANG LU
  • Publication number: 20160204272
    Abstract: A non-volatile memory unit includes a substrate, a first dielectric layer, an erase gate, a floating gate, a second dielectric layer, a coupled dielectric layer and a couple control gate. The substrate has a source region and a drain region, and the first dielectric layer is formed on the substrate. The erase gate, the floating gate, the second dielectric layer and the selective gate are formed on the first dielectric layer. The second dielectric layer and coupled dielectric layer are formed among and above the erase gate, the floating gate and the selective gate, and the couple control gate is formed on the coupled dielectric layer.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Applicant: Xinnova Technology limited
    Inventors: DER-TSYR FAN, CHIH-MING CHEN, JUNG-CHANG LU
  • Publication number: 20150243795
    Abstract: A low electric field source erasable non-volatile memory unit includes a substrate having a source diffusion region and a drain diffusion region. The source diffusion region includes a heavily-doped region and a lightly-doped region extending. A first dielectric layer and a tunnel dielectric layer are formed on the substrate. The tunnel dielectric layer includes a lower face contiguous to or partially overlapped with the lightly-doped region of the source diffusion region. A select gate and a floating gate are respectively formed on the first dielectric layer and the tunnel dielectric layer. The floating gate includes a source side edge contiguous to or partially overlapped with the lightly-doped region and misaligned from the heavily-doped region by a distance. A second dielectric layer and a control gate are formed on the floating gate. The control gate and the floating gate are insulating to each other by the second dielectric layer.
    Type: Application
    Filed: January 16, 2015
    Publication date: August 27, 2015
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu
  • Publication number: 20150214315
    Abstract: A non-volatile memory unit includes a substrate on which a source diffusion region and a drain diffusion region are formed. A first dielectric layer and a tunnel dielectric layer are formed between the source diffusion region and the drain diffusion region, are respectively on the drain diffusion region side and the source diffusion region side, and are connected to each other. A select gate is formed on the first dielectric layer. A source insulating layer is formed on the source diffusion region. The tunnel dielectric layer extends to the source diffusion region and is connected to the source insulating layer. A floating gate is formed on a face of the tunnel dielectric layer and a face of the thicker source insulating layer. A control gate is formed on the floating gate. The control gate and the floating gate are insulating to each other by the second dielectric layer.
    Type: Application
    Filed: January 13, 2015
    Publication date: July 30, 2015
    Inventors: Der-Tsyr Fan, Chih-Ming Chen, Jung-Chang Lu