Patents by Inventor Wen-Tsung Chang

Wen-Tsung Chang 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: 10366896
    Abstract: A method for fabricating semiconductor device includes the steps of first forming a gate dielectric layer on a substrate; forming a gate material layer on the gate dielectric layer, and removing part of the gate material layer and part of the gate dielectric layer to form a gate electrode, in which a top surface of the gate dielectric layer adjacent to two sides of the gate electrode is lower than a top surface of the gate dielectric layer between the gate electrode and the substrate. Next, a first mask layer is formed on the gate dielectric layer and the gate electrode, part of the first mask layer and part of the gate dielectric layer are removed to form a first spacer, a second mask layer is formed on the substrate and the gate electrode, and part of the second mask layer is removed to form a second spacer.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: July 30, 2019
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: I-Fan Chang, Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, Jie-Ning Yang, Chi-Ju Lee, Chun-Ting Chiang, Bo-Yu Su, Chih-Wei Lin, Dien-Yang Lu
  • Publication number: 20190109202
    Abstract: The present invention provides a method of manufacturing a gate stack structure. The method comprises providing a substrate. A dielectric layer is then formed on the substrate and a gate trench is formed in the dielectric layer. A bottom barrier layer, a first work function metal layer and a top barrier layer are formed in the gate trench in sequence. Afterwards, a silicon formation layer is formed on the top barrier layer and filling the gate trench. A planarization process is performed, to remove a portion of the silicon formation layer, a portion of the bottom barrier layer, a portion of the first work function metal layer, and a portion of the top barrier layer. Next, the remaining silicon formation layer is removed completely, and a conductive layer is filled in the gate trench.
    Type: Application
    Filed: December 6, 2018
    Publication date: April 11, 2019
    Inventors: Chun-Ting Chiang, Chi-Ju Lee, Chih-Wei Lin, Bo-Yu Su, Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, I-Fan Chang
  • Publication number: 20190043725
    Abstract: A method for fabricating semiconductor device includes the steps of first forming a gate dielectric layer on a substrate; forming a gate material layer on the gate dielectric layer, and removing part of the gate material layer and part of the gate dielectric layer to form a gate electrode, in which a top surface of the gate dielectric layer adjacent to two sides of the gate electrode is lower than a top surface of the gate dielectric layer between the gate electrode and the substrate. Next, a first mask layer is formed on the gate dielectric layer and the gate electrode, part of the first mask layer and part of the gate dielectric layer are removed to form a first spacer, a second mask layer is formed on the substrate and the gate electrode, and part of the second mask layer is removed to form a second spacer.
    Type: Application
    Filed: August 28, 2017
    Publication date: February 7, 2019
    Inventors: I-Fan Chang, Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, Jie-Ning Yang, Chi-Ju Lee, Chun-Ting Chiang, Bo-Yu Su, Chih-Wei Lin, Dien-Yang Lu
  • Patent number: 10186594
    Abstract: The present invention provides a method of manufacturing a gate stack structure. The method comprises providing a substrate. A dielectric layer is then formed on the substrate and a gate trench is formed in the dielectric layer. A bottom barrier layer, a first work function metal layer and a top barrier layer are formed in the gate trench in sequence. Afterwards, a silicon formation layer is formed on the top barrier layer and filling the gate trench. A planarization process is performed, to remove a portion of the silicon formation layer, a portion of the bottom barrier layer, a portion of the first work function metal layer, and a portion of the top barrier layer. Next, the remaining silicon formation layer is removed completely, and a conductive layer is filled in the gate trench.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: January 22, 2019
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chun-Ting Chiang, Chi-Ju Lee, Chih-Wei Lin, Bo-Yu Su, Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, I-Fan Chang
  • Publication number: 20190006484
    Abstract: A semiconductor device includes a substrate, a gate structure, a spacer, a mask layer, and at least one void. The gate structure is disposed on the substrate, and the gate structure includes a metal gate electrode. The spacer is disposed on sidewalls of the gate structure, and a topmost surface of the spacer is higher than a topmost surface of the metal gate electrode. The mask layer is disposed on the gate structure. At least one void is disposed in the mask layer and disposed between the metal gate electrode and the spacer.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 3, 2019
    Inventors: Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, I-Fan Chang, Chun-Ting Chiang, Chih-Wei Lin, Bo-Yu Su, Chi-Ju Lee
  • Patent number: 10170573
    Abstract: A semiconductor device includes a substrate, a metal gate on the substrate, and a first inter-layer dielectric (ILD) layer around the metal gate. A top surface of the metal gate is lower than a top surface of the ILD layer thereby forming a recessed region atop the metal gate. A mask layer is disposed in the recessed region. A void is formed in the mask layer within the recessed region. A second ILD layer is disposed on the mask layer and the first ILD layer. A contact hole extends into the second ILD layer and the mask layer. The contact hole exposes the top surface of the metal gate and communicates with the void. A conductive layer is disposed in the contact hole and the void.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: January 1, 2019
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chun-Ting Chiang, Jie-Ning Yang, Chi-Ju Lee, Chih-Wei Lin, Bo-Yu Su, Yen-Liang Wu, I-Fan Chang, Jui-Ming Yang, Wen-Tsung Chang
  • Publication number: 20180358448
    Abstract: The present invention provides a method of manufacturing a gate stack structure. The method comprises providing a substrate. A dielectric layer is then formed on the substrate and a gate trench is formed in the dielectric layer. A bottom barrier layer, a first work function metal layer and a top barrier layer are formed in the gate trench in sequence. Afterwards, a silicon formation layer is formed on the top barrier layer and filling the gate trench. A planarization process is performed, to remove a portion of the silicon formation layer, a portion of the bottom barrier layer, a portion of the first work function metal layer, and a portion of the top barrier layer. Next, the remaining silicon formation layer is removed completely, and a conductive layer is filled in the gate trench.
    Type: Application
    Filed: July 4, 2017
    Publication date: December 13, 2018
    Inventors: Chun-Ting Chiang, Chi-Ju Lee, Chih-Wei Lin, Bo-Yu Su, Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, I-Fan Chang
  • Patent number: 10062764
    Abstract: A semiconductor device includes a substrate, a gate structure, a spacer, a mask layer, and at least one void. The gate structure is disposed on the substrate, and the gate structure includes a metal gate electrode. The spacer is disposed on sidewalls of the gate structure, and a topmost surface of the spacer is higher than a topmost surface of the metal gate electrode. The mask layer is disposed on the gate structure. At least one void is disposed in the mask layer and disposed between the metal gate electrode and the spacer.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: August 28, 2018
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, I-Fan Chang, Chun-Ting Chiang, Chih-Wei Lin, Bo-Yu Su, Chi-Ju Lee
  • Patent number: 10002966
    Abstract: A field-effect transistor includes a substrate having thereon an isolation region. A fin structure protrudes from a top surface of the isolation region. The fin structure extends along a first direction. A gate electrode strides across the fin structure and extends along a second direction. A fin corner layer wraps a lower portion of the gate electrode around the fin structure. A spacer covers a sidewall of the gate electrode and the fin corner layer.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 19, 2018
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: I-Fan Chang, Chi-Ju Lee, Yen-Liang Wu, Wen-Tsung Chang, Jui-Ming Yang, Dien-Yang Lu
  • Patent number: 9445666
    Abstract: A shelf with interlayers may include a shelf made by a plurality of connectors and panels, wherein both sides of the panel has at least one connecting portion and connecting unit, and connecting unit has a connecting groove corresponding to the panel, and the connecting groove is configured to engage with auxiliary panels to increase the variability of using an inner space of the shelf.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 20, 2016
    Inventor: Wen-Tsung Chang
  • Patent number: 9201463
    Abstract: A portable electronic device includes a host module, a display module pivoted to the host module, a pivoting component and a lifting mechanism. The pivoting component is driven by the display module to rotate simultaneously. The lifting mechanism includes a base, a linking component connected to the base, a sliding component and a pushing component. A guiding slot is formed on the sliding component, and the guiding slot sheathes the linking component. The pushing component is installed on the pivoting component for pushing the sliding component to move in a first direction after the display module pivots relative to the host module to a predetermined angle, so that the guiding slot guides the linking component to move in a second direction different from the first direction, so as to drive the base to protrude outside a bottom side of the host module to lift the host module up.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: December 1, 2015
    Assignee: Wistron Corporation
    Inventors: Wen-Tsung Chang, Ai-Chun Sun
  • Patent number: 9089212
    Abstract: An assembled structure with connectors may include a first unit and a second unit. One side of the first unit extends to protrudingly form a plurality of protruding ribs that define a plurality of horizontal and vertical long connecting slots, and the first unit and second unit engage with each other. Also, a plurality of engaging slots are formed between the first unit and second unit, and the other side of the second unit has elongated slots. Thus, a board is connected with the connector at four corners of the board, and the first unit has long connecting slots that are used to circularly form a square frame. A backboard is connected with the engaging slot and the board to form a usable assembled structure.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: July 28, 2015
    Inventor: Wen-Tsung Chang
  • Publication number: 20150076099
    Abstract: A shelf with interlayers may include a shelf made by a plurality of connectors and panels, wherein both sides of the panel has at least one connecting portion and connecting unit, and connecting unit has a connecting groove corresponding to the panel, and the connecting groove is configured to engage with auxiliary panels to increase the variability of using an inner space of the shelf.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 19, 2015
    Inventor: Wen-Tsung Chang
  • Patent number: 8827725
    Abstract: A card reader is disposed in a case body of an electronic device for connecting an electronic card. The card reader includes an electrical connection socket, at least one guiding member, at least one guiding rail and a cover. The electrical connection socket is disposed in the case body for inserting an electrical connector of the electronic card thereinto. The guiding member is disposed in the case body and provides a guiding slot extending along a guiding direction. The guiding direction is parallel to a direction in which the electrical connector is inserted into the electrical connection socket. The guiding rail includes a sliding portion sliding in the guiding slot and a lower support portion extending from the sliding portion for guiding the electronic card to pass through the insertion hole of the case body. The cover is pivoted to the guiding rail and for closing the insertion hole.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: September 9, 2014
    Assignee: Wistron Corporation
    Inventor: Wen-Tsung Chang
  • Publication number: 20140218846
    Abstract: A portable electronic device includes a host module, a display module pivoted to the host module, a pivoting component and a lifting mechanism. The pivoting component is driven by the display module to rotate simultaneously. The lifting mechanism includes a base, a linking component connected to the base, a sliding component and a pushing component. A guiding slot is formed on the sliding component, and the guiding slot sheathes the linking component. The pushing component is installed on the pivoting component for pushing the sliding component to move in a first direction after the display module pivots relative to the host module to a predetermined angle, so that the guiding slot guides the linking component to move in a second direction different from the first direction, so as to drive the base to protrude outside a bottom side of the host module to lift the host module up.
    Type: Application
    Filed: November 4, 2013
    Publication date: August 7, 2014
    Applicant: Wistron Corporation
    Inventors: Wen-Tsung Chang, Ai-Chun Sun
  • Publication number: 20140080335
    Abstract: A card reader is disposed in a case body of an electronic device for connecting an electronic card. The card reader includes an electrical connection socket, at least one guiding member, at least one guiding rail and a cover. The electrical connection socket is disposed in the case body for inserting an electrical connector of the electronic card thereinto. The guiding member is disposed in the case body and provides a guiding slot extending along a guiding direction. The guiding direction is parallel to a direction in which the electrical connector is inserted into the electrical connection socket. The guiding rail includes a sliding portion sliding in the guiding slot and a lower support portion extending from the sliding portion for guiding the electronic card to pass through the insertion hole of the case body. The cover is pivoted to the guiding rail and for closing the insertion hole.
    Type: Application
    Filed: November 20, 2013
    Publication date: March 20, 2014
    Applicant: Wistron Corporation
    Inventor: Wen-Tsung CHANG
  • Patent number: 8662905
    Abstract: A card reader is disposed in a case body of an electronic device for connecting an electronic card. The card reader includes an electrical connection socket, at least one guiding member, at least one guiding rail and a cover. The electrical connection socket is disposed in the case body for inserting an electrical connector of the electronic card thereinto. The guiding member is disposed in the case body and provides a guiding slot extending along a guiding direction. The guiding direction is parallel to a direction in which the electrical connector is inserted into the electrical connection socket. The guiding rail includes a sliding portion sliding in the guiding slot and a lower support portion extending from the sliding portion for guiding the electronic card to pass through the insertion hole of the case body. The cover is pivoted to the guiding rail and for closing the insertion hole.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 4, 2014
    Assignee: Wistron Corporation
    Inventor: Wen-Tsung Chang
  • Patent number: 8654247
    Abstract: An image-capturing device includes a fixing element, an image-capturing module, and a resilient friction element. The fixing element includes a fixed friction face. The image-capturing module includes a journal portion connected rotatably to the fixing element, and a main body connected to the journal portion and having a lens. The journal portion has an outer surface facing the friction face and rotatable relative to the friction face, and at least one accommodating groove formed in the outer surface. The resilient friction element is disposed on the outer surface of the journal portion, and includes at least one friction portion spanning the accommodating groove. The friction portion is in frictional contact with the friction face, and is deformed and compressed into the accommodating groove by the friction face.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 18, 2014
    Assignee: Wistron Corporation
    Inventor: Wen-Tsung Chang
  • Publication number: 20130137290
    Abstract: A card reader is disposed in a case body of an electronic device for connecting an electronic card. The card reader includes an electrical connection socket, at least one guiding member, at least one guiding rail and a cover. The electrical connection socket is disposed in the case body for inserting an electrical connector of the electronic card thereinto. The guiding member is disposed in the case body and provides a guiding slot extending along a guiding direction. The guiding direction is parallel to a direction in which the electrical connector is inserted into the electrical connection socket. The guiding rail includes a sliding portion sliding in the guiding slot and a lower support portion extending from the sliding portion for guiding the electronic card to pass through the insertion hole of the case body. The cover is pivoted to the guiding rail and for closing the insertion hole.
    Type: Application
    Filed: May 11, 2012
    Publication date: May 30, 2013
    Inventor: Wen-Tsung CHANG
  • Patent number: D742669
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: November 10, 2015
    Inventor: Wen-Tsung Chang