Patents by Inventor Hsing-Chao Liu

Hsing-Chao Liu 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: 11973021
    Abstract: A semiconductor device includes a first metal layer, a second metal layer, and an inter-metal dielectric layer disposed between the first metal layer and the second metal layer. The inter-metal dielectric layer includes: a first dielectric layer disposed on the first metal layer and in direct contact with the first metal layer, wherein the first dielectric layer has a stress value less than 0; a second dielectric layer disposed on the first dielectric layer, wherein the second dielectric layer has a stress value greater than 0; and a third dielectric layer disposed on the second dielectric layer, wherein the third dielectric layer has a stress value less than 0. A thickness of the third dielectric layer is greater than a thickness of the second dielectric layer, and the thickness of the second dielectric layer is greater than a thickness of the first dielectric layer.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: April 30, 2024
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Kai-Chun Chen, Shih-Ming Tseng, Hsing-Chao Liu, Hsiao-Ying Yang
  • Publication number: 20240136447
    Abstract: A semiconductor device is provided. The semiconductor device includes a semiconductor substrate, a first deep well region, at least two second well regions, at least one isolation structure and an implantation region. The first deep well region is disposed in the semiconductor substrate, wherein the first deep well region has a first conductivity type. The second well regions are disposed on the first deep well region, wherein the second well regions have a second conductivity type. The isolation structure covers a portion of the first deep well region and surrounds at least a portion of the second well regions. The implantation region is located under a top surface of the semiconductor substrate, wherein the implantation region has a discontinuous portion, and the discontinuous portion partially overlaps the first deep well region.
    Type: Application
    Filed: October 24, 2022
    Publication date: April 25, 2024
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chung-Ren LAO, Hsiao-Ying YANG, Hsing-Chao LIU, Ching-Chung CHEN
  • Publication number: 20240047460
    Abstract: A semiconductor device includes a first buried layer and a second buried layer both have a first conductivity type and are disposed in a substrate, where the second buried layer is disposed on the first buried layer. A first well region has the first conductivity type and is disposed above the second buried layer. A second well region has a second conductivity type and is adjacent to the first well region. A deep trench isolation structure is disposed in the substrate and surrounds the first and second well regions, where the bottom surface of the deep trench isolation structure is lower than the bottom surface of the first buried layer. A source region is disposed in the second well region. A drain region is disposed in the first well region. A gate electrode is disposed on the first and second well regions.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chih-Cherng Liao, Chung-Ren Lao, Hsing-Chao Liu, Chun-Wei Li, Hsueh-Chun Liao
  • Patent number: 11742389
    Abstract: A method for forming a semiconductor structure includes providing a substrate including a first region with a first gate structure and a second region with a second gate structure. First to third dielectric layers are formed on the substrate. The third dielectric layer is patterned to form a first portion in the first region and a second portion in the second region. The second region is covered and at least a portion of the first portion is removed to form a first mask. The second dielectric layer is pattern by using the first mask and the second portion as the second mask to expose a portion of the first dielectric layer. The portion of the first dielectric layer is removed to form a first stacked spacer on the first gate structure and a second stacked spacer on the second gate structure.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: August 29, 2023
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Hung-Chih Tan, Hsing-Chao Liu, Chih-Cherng Liao, Hsiao-Ying Yang, Kai-Chuan Kan, Jing-Da Li
  • Publication number: 20230105036
    Abstract: A semiconductor device includes a first metal layer, a second metal layer, and an inter-metal dielectric layer disposed between the first metal layer and the second metal layer. The inter-metal dielectric layer includes: a first dielectric layer disposed on the first metal layer and in direct contact with the first metal layer, wherein the first dielectric layer has a stress value less than 0; a second dielectric layer disposed on the first dielectric layer, wherein the second dielectric layer has a stress value greater than 0; and a third dielectric layer disposed on the second dielectric layer, wherein the third dielectric layer has a stress value less than 0. A thickness of the third dielectric layer is greater than a thickness of the second dielectric layer, and the thickness of the second dielectric layer is greater than a thickness of the first dielectric layer.
    Type: Application
    Filed: September 17, 2021
    Publication date: April 6, 2023
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Kai-Chun CHEN, Shih-Ming TSENG, Hsing-Chao LIU, Hsiao-Ying YANG
  • Publication number: 20220376052
    Abstract: A method for forming a semiconductor structure includes providing a substrate including a first region with a first gate structure and a second region with a second gate structure. First to third dielectric layers are formed on the substrate. The third dielectric layer is patterned to form a first portion in the first region and a second portion in the second region. The second region is covered and at least a portion of the first portion is removed to form a first mask. The second dielectric layer is pattern by using the first mask and the second portion as the second mask to expose a portion of the first dielectric layer. The portion of the first dielectric layer is removed to form a first stacked spacer on the first gate structure and a second stacked spacer on the second gate structure.
    Type: Application
    Filed: May 18, 2021
    Publication date: November 24, 2022
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Hung-Chih TAN, Hsing-Chao LIU, Chih-Cherng LIAO, Hsiao-Ying YANG, Kai-Chuan KAN, Jing-Da LI
  • Patent number: 11393921
    Abstract: A high-voltage semiconductor device includes a substrate, a first insulating structure, a gate, a drain region, a source region and a doped region. The substrate has a first conductive type, and the first insulating structure is disposed on the substrate. The drain region and the source region are disposed in the substrate. The source region has a first portion and a second portion. The first portion has the second conductive type and the second portion has the first conductive type. The gate is disposed on the substrate, between the source region and the drain region to partially cover a side of the first insulating structure. The doped region is disposed in the substrate and has a first doped region and a second doped region, and the first doped region and the second doped region both include the first conductive type and separately disposed under the first insulating structure.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 19, 2022
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Hung-Chih Tan, Hsing-Chao Liu, Hsiao-Ying Yang, Chih-Cherng Liao
  • Publication number: 20220069122
    Abstract: A high-voltage semiconductor device includes a substrate, a first insulating structure, a gate, a drain region, a source region and a doped region. The substrate has a first conductive type, and the first insulating structure is disposed on the substrate. The drain region and the source region are disposed in the substrate. The source region has a first portion and a second portion. The first portion has the second conductive type and the second portion has the first conductive type. The gate is disposed on the substrate, between the source region and the drain region to partially cover a side of the first insulating structure. The doped region is disposed in the substrate and has a first doped region and a second doped region, and the first doped region and the second doped region both include the first conductive type and separately disposed under the first insulating structure.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 3, 2022
    Inventors: Hung-Chih Tan, Hsing-Chao Liu, Hsiao-Ying Yang, Chih-Cherng Liao
  • Patent number: 10629726
    Abstract: The present disclosure provides a high-voltage semiconductor device, including: a substrate; an epitaxial layer disposed over the substrate and having a first conductive type; a gate structure disposed over the epitaxial layer; a source region and a drain region disposed in the epitaxial layer at opposite sides of the gate structure respectively; and a stack structure disposed between the gate structure and the drain region, wherein the stack structure includes: a blocking layer; an insulating layer disposed over the blocking layer; and a conductive layer disposed over the insulating layer and electrically connected the source region or the gate structure. The present disclosure also provides a method for manufacturing the high-voltage semiconductor device.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: April 21, 2020
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Chung-Ren Lao, Hsing-Chao Liu, Chu-Feng Chen, Wei-Chun Chou
  • Patent number: 10615249
    Abstract: A capacitor structure includes a first electrode plate disposed on a substrate, a first capacitor dielectric layer disposed on the first electrode plate, and a second electrode plate disposed on the first capacitor dielectric layer. A portion of the first electrode plate extends beyond an end of the second electrode plate to form a step. The capacitor structure also includes an etching stop layer, an inter-metal dielectric layer, a first via and a second via. The etching stop layer is disposed on the second electrode plate. The inter-metal dielectric layer covers the etching stop layer, the second electrode plate, the first capacitor dielectric layer and the first electrode plate. The first via penetrates through the inter-metal dielectric layer to contact the first electrode plate at the portion extending beyond the second electrode plate. The second via penetrates through the inter-metal dielectric layer to contact the second electrode plate.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: April 7, 2020
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Hsing-Chao Liu, Li-Che Chen, Chien-Hsien Song, Shu-Wei Hsu
  • Publication number: 20200027946
    Abstract: A capacitor structure includes a first electrode plate disposed on a substrate, a first capacitor dielectric layer disposed on the first electrode plate, and a second electrode plate disposed on the first capacitor dielectric layer. A portion of the first electrode plate extends beyond an end of the second electrode plate to form a step. The capacitor structure also includes an etching stop layer, an inter-metal dielectric layer, a first via and a second via. The etching stop layer is disposed on the second electrode plate. The inter-metal dielectric layer covers the etching stop layer, the second electrode plate, the first capacitor dielectric layer and the first electrode plate. The first via penetrates through the inter-metal dielectric layer to contact the first electrode plate at the portion extending beyond the second electrode plate. The second via penetrates through the inter-metal dielectric layer to contact the second electrode plate.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 23, 2020
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Hsing-Chao LIU, Li-Che CHEN, Chien-Hsien SONG, Shu-Wei HSU
  • Patent number: 10276563
    Abstract: A semiconductor device and a method for forming the same are provided. The method includes forming a patterned mask on a substrate, wherein the patterned mask includes a pad oxide layer and a silicon nitride layer over the pad oxide layer. The method also includes forming a trench in the substrate by performing a first etching process on the substrate through an opening of the patterned mask and forming a dielectric material layer in the trench, in the opening, and on the patterned mask. The method further includes performing a planarization process to remove the dielectric material layer outside of the trench, and performing a heat treatment process to form an oxidized portion at the interface of the pad oxide layer and the substrate and adjacent to the dielectric material layer.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 30, 2019
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Ying-Kai Chou, Li-Che Chen, Hsing-Chao Liu
  • Patent number: 10276679
    Abstract: A semiconductor device including a substrate, a first doped region, a second doped region, a gate, and a gate dielectric layer is provided. The substrate has a first conductive type. The first doped region is formed in the substrate and has a second conductive type. The second doped region is formed in the substrate and has the second conductive type. The gate is formed on the substrate and is disposed between the first and second doped regions. The gate dielectric layer is formed on the substrate and is disposed between the gate and the substrate. The gate dielectric layer includes a first region and a second region. The depth of the first region is different from the depth of the second region.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 30, 2019
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Chien-Wei Chiu, Hsing-Chao Liu, Chun-Fu Liu, Ying-Kai Chou
  • Publication number: 20180350931
    Abstract: A semiconductor device including a substrate, a first doped region, a second doped region, a gate, and a gate dielectric layer is provided. The substrate has a first conductive type. The first doped region is formed in the substrate and has a second conductive type. The second doped region is formed in the substrate and has the second conductive type. The gate is formed on the substrate and is disposed between the first and second doped regions. The gate dielectric layer is formed on the substrate and is disposed between the gate and the substrate. The gate dielectric layer includes a first region and a second region. The depth of the first region is different from the depth of the second region.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 6, 2018
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chien-Wei CHIU, Hsing-Chao LIU, Chun-Fu LIU, Ying-Kai CHOU
  • Patent number: 9978861
    Abstract: A semiconductor device is disclosed. The semiconductor device includes a substrate having an isolation region and an active region defined by the isolation region. At least one trench is formed in the active region and extends along a first direction. A gate layer is disposed on the active region and extends along a second direction, wherein the gate layer conformably fills the at least one trench and covers a bottom surface and sidewalls of the at least one trench. The disclosure also provides a method for manufacturing the semiconductor device.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: May 22, 2018
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Chung-Ren Lao, Hsing-Chao Liu, Chih-Jen Huang
  • Patent number: 9972534
    Abstract: A semiconductor device includes a through-substrate via structure, a first metal layer, an electronic component over the through-substrate via structure, a second metal layer and another electronic component below the through-substrate via structure. The through-substrate via structure includes a through hole penetrating from a first surface to an opposite second surface of a semiconductor substrate, and an acute angle is included between a sidewall of the through hole and the second surface on a side of the semiconductor substrate. The through-substrate via structure also includes a conductive layer that fills the through hole, and a semiconductor layer disposed in the through hole and interposed between the conductive layer and the semiconductor substrate.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: May 15, 2018
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Li-Che Chen, Tzu-Hsuan Chen, Hsing-Chao Liu
  • Publication number: 20180076282
    Abstract: A semiconductor device and a method for forming the same are provided. The method includes forming a patterned mask on a substrate, wherein the patterned mask includes a pad oxide layer and a silicon nitride layer over the pad oxide layer. The method also includes forming a trench in the substrate by performing a first etching process on the substrate through an opening of the patterned mask and forming a dielectric material layer in the trench, in the opening, and on the patterned mask. The method further includes performing a planarization process to remove the dielectric material layer outside of the trench, and performing a heat treatment process to form an oxidized portion at the interface of the pad oxide layer and the substrate and adjacent to the dielectric material layer.
    Type: Application
    Filed: September 12, 2016
    Publication date: March 15, 2018
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Ying-Kai CHOU, Li-Che CHEN, Hsing-Chao LIU
  • Patent number: 9799601
    Abstract: A fuse element includes a metal layer disposed on a substrate. The metal layer includes an intermediate segment, a first block and a second block. The first block and the second block are electrically connected to two respective ends of the intermediate segment. The fuse element also includes a dielectric layer covering the intermediate segment, the first block and the second block, a first passivation layer disposed on the dielectric layer, and a second passivation layer disposed on the first passivation layer. The fuse element further includes an opening penetrating through the first passivation layer, the second passivation layer and a portion of the dielectric layer, and located above the intermediate segment. In addition, a protective film is disposed on a bottom and a portion of a sidewall of the opening, and covers the first passivation layer exposed by the opening.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: October 24, 2017
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Ming-Sheng Hsu, Li-Che Chen, Hsing-Chao Liu
  • Patent number: 9525020
    Abstract: A semiconductor device including a substrate having an isolation structure therein is disclosed. A capacitor is disposed on the isolation structure and includes a polysilicon electrode, an insulating layer disposed on the polysilicon electrode, and a metal electrode disposed on the insulating layer. A method for forming the semiconductor device is also disclosed.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: December 20, 2016
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Chung-Ren Lao, Hsing-Chao Liu, Tzung-Hsian Wu, Chih-Jen Huang
  • Publication number: 20160172490
    Abstract: The present disclosure provides a high-voltage semiconductor device, including: a substrate; an epitaxial layer disposed over the substrate and having a first conductive type; a gate structure disposed over the epitaxial layer; a source region and a drain region disposed in the epitaxial layer at opposite sides of the gate structure respectively; and a stack structure disposed between the gate structure and the drain region, wherein the stack structure includes: a blocking layer; an insulating layer disposed over the blocking layer; and a conductive layer disposed over the insulating layer and electrically connected the source region or the gate structure. The present disclosure also provides a method for manufacturing the high-voltage semiconductor device.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 16, 2016
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chung-Ren LAO, Hsing-Chao LIU, Chu-Feng CHEN, Wei-Chun CHOU