Patents by Inventor Huy Tu

Huy Tu 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: 9076887
    Abstract: A method for fabricating a semiconductor device is provided. A method for fabricating a semiconductor device includes providing a semiconductor substrate having a first conductive type. An epitaxy layer having the first conductive type is formed on the semiconductor substrate. First trenches are formed in the epitaxy layer. First insulating liner layers are formed on sidewalls and bottoms of the first trenches. A first dopant having the first conductive type dopes the epitaxy layer from the sidewalls of the first trenches to form first doped regions. A first insulating material is filled into the first trenches. Second trenches are formed in the epitaxy layer. Second insulating liner layers are formed on sidewalls and bottoms of the second trenches. A second dopant having a second conductive type dopes the epitaxy layer from the sidewalls of the second trenches to form second doped regions.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: July 7, 2015
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Tsung-Hsiung Lee, Shang-Hui Tu, Rudy Octavius Sihombing
  • Patent number: 9076862
    Abstract: The invention provides a semiconductor device, including: a substrate having a first conductivity type, including: a body region having the first conductivity type; a source region formed in the body region; a drift region having a second conductivity type adjacent to the body region; and a drain region formed in the drift region; a multiple reduced surface field (RESURF) structure embedded in the drift region of the substrate; and a gate dielectric layer formed over the substrate; wherein the first conductivity type is opposite to the second conductivity type.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: July 7, 2015
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Priyono Tri Sulistyanto, Rudy Octavius Sihombing, Chia-Hao Lee, Shang-Hui Tu
  • Patent number: 9070763
    Abstract: A semiconductor device layout structure is provided. The semiconductor device layout structure includes an active region having a first conductivity type over a semiconductor substrate. The active region is provided with semiconductor devices formed thereon. A first super junction layout unit in the active region includes a first trench. A first doped region having a first conductivity type is formed surrounding the first trench. A second trench is formed surrounding the first doped region. A second doped region having a second conductivity type is formed surrounding the second trench. The first trench is laterally separated from the second trench through the first doped region and the second doped region in a plan view.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: June 30, 2015
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Rudy Octavius Sihombing, Shang-Hui Tu
  • Patent number: 9054129
    Abstract: The present disclosure provides a semiconductor device, including a semiconductor substrate, an epitaxial structure, a well region, a drain region and a source region respectively formed in the epitaxial structure inside and outside of the well region. At least one set of first, second and third heavily doped regions formed in the well region between source and drain regions, wherein the first, second and third heavily doped regions are adjoined sequentially from bottom to top. A gate structure disposed over the epitaxial structure. The present disclosure also provides a method for manufacturing the semiconductor device.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: June 9, 2015
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Shang-Hui Tu, Chih-Jen Huang, Jui-Chun Chang, Yu-Hao Ho, Wen-Hsin Lin, Shin-Cheng Lin
  • Publication number: 20150155379
    Abstract: The invention provides a semiconductor device, including: a semiconductor device includes: a substrate having a first conductivity type, including: a body region having the first conductivity type; a source region formed in the body region; a drift region having a second conductivity type adjacent to the body region, wherein the first conductivity type is opposite to the second conductivity type; and a drain region formed in the drift region; a trench formed in the substrate between the body and drift regions; a gate dielectric layer disposed adjacent to the trench; a liner lining the trench and adjoining with the gate dielectric layer; and a gate electrode formed over the gate dielectric layer and extending into the trench.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 4, 2015
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Manoj KUMAR, Priyono Tri SULISTYANTO, Chia-Hao LEE, Rudy Octavius SIHOMBING, Shang-Hui TU
  • Patent number: 9048115
    Abstract: A method for fabricating a semiconductor device is provided. An epitaxial layer is grown on a substrate, wherein the epitaxial layer and the substrate have a first conductivity type. A trench is formed in the epitaxial layer. A barrier region is formed at a bottom of the trench. A doped region of a second conductivity type is formed in the epitaxial layer and surrounds sidewalls of the trench, wherein the barrier region prevents a dopant used for forming the doped region from reaching the epitaxial layer under the barrier region. The trench is filled with a dielectric material. A pair of polysilicon gates is formed on the epitaxial layer and on both sides of the trench.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: June 2, 2015
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Tsung-Hsiung Lee, Shang-Hui Tu, Gene Sheu, Neelam Agarwal, Karuna Nidhi, Chia-Hao Lee, Rudy Octavius Sihombing
  • Publication number: 20150137327
    Abstract: The invention provides a semiconductor device. A buried layer is formed in a substrate. A first deep trench contact structure is formed in the substrate. The first deep trench contact structure comprises a conductor and a liner layer formed on a sidewall of the conductor. A bottom surface of the first deep trench contact structure is in contact with the buried layer.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 21, 2015
    Applicant: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Geeng-Lih LIN, Kwang-Ming LIN, Shang-Hui TU, Jui-Chun CHANG
  • Publication number: 20150137229
    Abstract: The invention provides a semiconductor device, including: a substrate having a first conductivity type, including: a body region having the first conductivity type; a source region formed in the body region; a drift region having a second conductivity type adjacent to the body region, wherein the first conductivity type is opposite to the second conductivity type; and a drain region formed in the drift region; a multiple reduced surface field (RESURF) structure embedded in the drift region of the substrate; and a gate dielectric layer having a thick portion formed over the substrate, wherein the gate dielectric includes at least a stepped-shape or a curved shape curved-shape formed thereon, and wherein the multiple RESURF structure is aligned with the thick portion of the gate dielectric layer.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 21, 2015
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Priyono Tri SULISTYANTO, Shang-Hui TU
  • Patent number: 9021147
    Abstract: A method and system for command queuing in disk drives may improve performance by queuing multiple commands and sequentially executing them automatically without firmware intervention. The method may use a number of queues, e.g., a staging queue for commands to be executed, an execution queue for commands currently being executed, and a holding queue for commands which have been executed but have not received a status report from a host. With the pipelined nature of queued commands, when data requested by one command are being sent to the host, the queue logic may already be fetching data for the next command. If an error occurs in the transmission, commands in the queues may backtrack and restart from the point where data were last known to have been successfully sent to the host.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: April 28, 2015
    Assignee: Marvell International Ltd.
    Inventors: Huy Tu Nguyen, William C. Wong, Kha Nguyen, Yehua Yang
  • Publication number: 20150102407
    Abstract: A lateral double diffused metal-oxide-semiconductor device includes: an epitaxial semiconductor layer disposed over a semiconductor substrate; a gate dielectric layer disposed over the epitaxial semiconductor layer; a gate stack disposed over the gate dielectric layer; a first doped region disposed in the epitaxial semiconductor layer from a first side of the gate stack; a second doped region disposed in the epitaxial semiconductor layer from a second side of the gate stack; a third doped region disposed in the first doping region; a fourth doped region disposed in the second doped region; an insulating layer covering the third doped region, the gate dielectric layer, and the gate stack; a conductive contact disposed in the insulating layer, the third doped region, the first doped region and the epitaxial semiconductor layer; and a fifth doped region disposed in the epitaxial semiconductor layer under the conductive contact.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 16, 2015
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Tsung-Hsiung LEE, Jui-Chun CHANG, Shang-Hui TU
  • Patent number: 8921202
    Abstract: The invention provides a semiconductor device. A buried layer is formed in a substrate. A first deep trench contact structure is formed in the substrate. The first deep trench contact structure comprises a conductor and a liner layer formed on a sidewall of the conductor. A bottom surface of the first deep trench contact structure is in contact with the buried layer.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: December 30, 2014
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Geeng-Lih Lin, Kwang-Ming Lin, Shang-Hui Tu, Jui-Chun Chang
  • Patent number: 8924900
    Abstract: An analytical synthesis method (ASM) for designing a higher-order voltage-mode operational trans-resistance amplifier and capacitor (OTRA-C) based filter is disclosed. A decomposition of a complicated nth-order transferring a function is converted into a set of equations corresponding to a set of sub-circuitries. Then, a circuit structure is constructed by combining said sub-circuitries.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: December 30, 2014
    Assignee: Chung Yuan Christian University
    Inventors: Chun-Ming Chang, Shu-Hui Tu
  • Publication number: 20140310672
    Abstract: An analytical synthesis method (ASM) for designing a higher-order voltage-mode operational trans-resistance amplifier and capacitor (OTRA-C) based filter is disclosed. A decomposition of a complicated nth-order transferring a function is converted into a set of equations corresponding to a set of sub-circuitries. Then, a circuit structure is constructed by combining said sub-circuitries.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 16, 2014
    Applicant: Chung Yuan Christian University
    Inventors: Chun-Ming CHANG, Shu-Hui Tu
  • Patent number: 8850136
    Abstract: The transmission of buffered data is coordinated between a storage medium and a host in response to a request from the host. One or more blocks of data are transferred from the storage medium to a buffer memory. One or more frames of data are transmitted from the buffer memory to the host, wherein the number of blocks ending in the frame is recorded in a blocks/frame register, and possibly also in a block count accumulator register. Buffer release pulses for releasing buffer space in memory are sent to the buffer memory, based on the number of blocks in the blocks/frame register, or the number of blocks accumulated in the block count accumulator register when a signal is received from the host. A pointer which points to the last block of data successfully transferred is updated in accordance with the buffer release pulses.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: September 30, 2014
    Assignee: Marvell International Ltd.
    Inventors: Huy Tu Nguyen, William C Wong, Kha Nguyen
  • Patent number: 8836017
    Abstract: A semiconductor device is provided. The semiconductor device includes a plurality of first epitaxial layers, a second epitaxial layer and a gate structure. The plurality of first epitaxial layers is stacked on a substrate and has a first conductivity type. Each first epitaxial layer includes at least one first doping region and at least one second doping region adjacent thereto. The first doping region has a second conductivity and the second doping region has the first conductivity type. The second epitaxial layer is disposed on the plurality of first epitaxial layers, having the first conductivity type. The second epitaxial layer has a trench therein and a third doping region having the second conductivity type is adjacent to a sidewall of the trench. The gate structure is disposed on the second epitaxial layer above the second doping region. A method of fabricating a semiconductor device is also disclosed.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 16, 2014
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Tsung-Hsiung Lee, Shang-Hui Tu
  • Patent number: 8809950
    Abstract: A method for fabrication of a semiconductor device is provided. A first type doped body region is formed in a first type substrate. A first type heavily-doped region is formed in the first type doped body region. A second type well region and second type bar regions are formed in the first type substrate with the second type bar regions between the second type well region and the first type doped body region. The first type doped body region, the second type well region, and each of the second type bar regions are separated from each other by the first type substrate. The second type bar regions are inter-diffused to form a second type continuous region adjoining the second type well region. A second type heavily-doped region is formed in the second type well region.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: August 19, 2014
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Shang-Hui Tu, Hung-Shern Tsai
  • Publication number: 20140217501
    Abstract: The invention provides a semiconductor device, including: a substrate having a first conductivity type, including: a body region having the first conductivity type; a source region formed in the body region; a drift region having a second conductivity type adjacent to the body region; and a drain region formed in the drift region; a multiple reduced surface field (RESURF) structure embedded in the drift region of the substrate; and a gate dielectric layer formed over the substrate; wherein the first conductivity type is opposite to the second conductivity type.
    Type: Application
    Filed: February 4, 2013
    Publication date: August 7, 2014
    Applicant: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Priyono Tri SULISTYANTO, Rudy Octavius SIHOMBING, Chia-Hao LEE, Shang-Hui TU
  • Publication number: 20140207879
    Abstract: A communication system, a master device, and a communication method are provided. The communication system includes a master device and at least one slave device. The master device periodically sends a plurality of synchronous messages at intervals of a first predetermined time. The at least one slave device respectively receives the corresponding synchronous messages via wireless communication. The master device and the at least one slave device synchronously switch an operating frequency of wireless communication according to a frequency table.
    Type: Application
    Filed: March 15, 2013
    Publication date: July 24, 2014
    Applicant: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Yu-Hui Tu
  • Publication number: 20140167706
    Abstract: A charging method for a rechargeable battery and a related charging architecture are provided. The provided charging method includes following steps. A characteristic curve of the rechargeable battery related to charge cycle vs. a residual capacity of a non-constant voltage charging stage under a warranty life limitation is provided. An expected residual capacity corresponding to a condition when a terminal voltage of the rechargeable battery reaches a limited charge voltage is found from the characteristic curve related to the charge cycle vs. the residual capacity of the non-constant voltage charging stage by using a current charge cycle count of the rechargeable battery. A real residual capacity corresponding to a condition when the terminal voltage of the rechargeable battery reaches the limited charge voltage approaches to the expected residual capacity by adjusting a charging current of the rechargeable battery.
    Type: Application
    Filed: June 13, 2013
    Publication date: June 19, 2014
    Inventors: Chein-Chung Sun, Shou-Hung Ling, Chiu-Yu Liu, Ying-Hao Hsu, Heng-Hui Tu, Chung-Jen Chou
  • Patent number: 8723256
    Abstract: A semiconductor device is provided. The device includes a semiconductor substrate and a gate structure thereon. A well region is formed in the semiconductor substrate. A drain region and a source region are respectively formed in the semiconductor substrate inside and outside of the well region. At least one set of the first and second heavily doped regions is formed in the well region between the drain region and the source region, wherein the first and second heavily doped regions are stacked vertically from bottom to top and have a doping concentration which is larger than that of the well region. The semiconductor substrate and the first heavily doped region have a first conductivity type and the well region and the second heavily doped region have a second conductivity type. A method for fabricating a semiconductor device is also disclosed.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: May 13, 2014
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Wen-Cheng Lin, Shang-Hui Tu, Shin-Cheng Lin