Patents by Inventor Duk Ju Na

Duk Ju Na 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: 10553487
    Abstract: A semiconductor device has a semiconductor wafer and a conductive via formed partially through the semiconductor wafer. A portion of the semiconductor wafer and conductive via is removed by a chemical mechanical polishing process. The semiconductor wafer and conductive via are coplanar at first and second surfaces. A first insulating layer and a second insulating layer are formed over the conductive via and semiconductor wafer. The first insulating layer includes an inorganic material and the second insulating layer includes an organic material. An opening in the first and second insulating layers is formed over the conductive via while a second portion of the conductive via remains covered by the first and second insulating layers. A conductive layer is formed over the conductive via and first insulating layer. An interconnect structure is formed over the conductive layer. The semiconductor wafer is singulated into individual semiconductor die.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: February 4, 2020
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Xing Zhao, Duk Ju Na, Lai Yee Chia
  • Patent number: 10115701
    Abstract: A semiconductor device has a semiconductor wafer and a conductive via formed through the semiconductor wafer. A portion of the semiconductor wafer is removed such that a portion of the conductive via extends above the semiconductor wafer. A first insulating layer is formed over the conductive via and semiconductor wafer. A second insulating layer is formed over the first insulating layer. The first insulating layer includes an inorganic material and the second insulating layer includes an organic material. A portion of the first and second insulating layers is removed simultaneously from over the conductive via by chemical mechanical polishing (CMP). Alternatively, a first insulating layer including an organic material is formed over the conductive via and semiconductor wafer. A portion of the first insulating layer is removed by CMP. A conductive layer is formed over the conductive via and first insulating layer. The conductive layer is substantially planar.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 30, 2018
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Xing Zhao, Duk Ju Na, Siew Joo Tan, Pandi C. Marimuthu
  • Patent number: 9865524
    Abstract: A semiconductor device includes a plurality of semiconductor die and a plurality of conductive vias formed in the semiconductor die. An insulating layer is formed over the semiconductor die while leaving the conductive vias exposed. An interconnect structure is formed over the insulating layer and conductive vias. The insulating layer is formed using electrografting or oxidation. An under bump metallization is formed over the conductive vias. A portion of the semiconductor die is removed to expose the conductive vias. The interconnect structure is formed over two or more of the conductive vias. A portion of the semiconductor die is removed to leave the conductive vias with a height greater than a height of the semiconductor die. A second insulating layer is formed over the first insulating layer. A portion of the second insulating layer is removed to expose the conductive via.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: January 9, 2018
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Duk Ju Na, Chang Beom Yong, Pandi C. Marimuthu
  • Publication number: 20170365517
    Abstract: A semiconductor device has a semiconductor wafer and a conductive via formed partially through the semiconductor wafer. A portion of the semiconductor wafer and conductive via is removed by a chemical mechanical polishing process. The semiconductor wafer and conductive via are coplanar at first and second surfaces. A first insulating layer and a second insulating layer are formed over the conductive via and semiconductor wafer. The first insulating layer includes an inorganic material and the second insulating layer includes an organic material. An opening in the first and second insulating layers is formed over the conductive via while a second portion of the conductive via remains covered by the first and second insulating layers. A conductive layer is formed over the conductive via and first insulating layer. An interconnect structure is formed over the conductive layer. The semiconductor wafer is singulated into individual semiconductor die.
    Type: Application
    Filed: August 11, 2017
    Publication date: December 21, 2017
    Applicant: STATS ChipPAC Pte. Ltd.
    Inventors: Xing Zhao, Duk Ju Na, Lai Yee Chia
  • Patent number: 9768066
    Abstract: A semiconductor device has a semiconductor wafer and a conductive via formed partially through the semiconductor wafer. A portion of the semiconductor wafer and conductive via is removed by a chemical mechanical polishing process. The semiconductor wafer and conductive via are coplanar at first and second surfaces. A first insulating layer and a second insulating layer are formed over the conductive via and semiconductor wafer. The first insulating layer includes an inorganic material and the second insulating layer includes an organic material. An opening in the first and second insulating layers is formed over the conductive via while a second portion of the conductive via remains covered by the first and second insulating layers. A conductive layer is formed over the conductive via and first insulating layer. An interconnect structure is formed over the conductive layer. The semiconductor wafer is singulated into individual semiconductor die.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: September 19, 2017
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Xing Zhao, Duk Ju Na, Lai Yee Chia
  • Patent number: 9728415
    Abstract: A semiconductor device has a substrate including a plurality of conductive vias formed vertically and partially through the substrate. An encapsulant is deposited over a first surface of the substrate and around a peripheral region of the substrate. A portion of the encapsulant around the peripheral region is removed by a cutting or laser operation to form a notch extending laterally through the encapsulant to a second surface of the substrate opposite the first surface of the substrate. A first portion of the substrate outside the notch is removed by chemical mechanical polishing to expose the conductive vias. A second portion of the substrate is removed by backgrinding prior to or after forming the notch. The encapsulant is coplanar with the substrate after revealing the conductive vias. The absence of an encapsulant/base material interface and coplanarity of the molded substrate results in less over-etching or under-etching and fewer defects.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 8, 2017
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Vinoth Kanna Chockanathan, Xing Zhao, Duk Ju Na, Chang Bum Yong
  • Patent number: 9281274
    Abstract: An integrated circuit substrate via system, and method of manufacture therefor, includes: a substrate having a substrate via in the substrate; a buffer layer patterned over the substrate via, the buffer layer having a planar surface; and a substrate via cap patterned over the buffer layer, the substrate via cap having a planar surface based on the planar surface of the buffer layer.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: March 8, 2016
    Assignee: STATS ChipPAC Ltd.
    Inventors: Xing Zhao, Chang Bum Yong, Duk Ju Na, Kyaw Oo Aung, Ling Ji
  • Patent number: 9257382
    Abstract: A semiconductor device has a plurality of conductive vias formed into a semiconductor wafer. An insulating lining is formed around the conductive vias and a conductive layer is formed over the insulating lining. A portion of the semiconductor wafer is removed so the conductive vias extend above a surface of the semiconductor wafer. A first insulating layer is formed over the surface of the semiconductor wafer and conductive vias. A first portion of the first insulating layer is removed and a second portion of the first insulating layer remains as guard rings around the conductive vias. A conductive layer is formed over the conductive vias. A second insulating layer is formed over the surface of the semiconductor wafer, guard rings, and conductive vias. A portion of the second insulating layer is removed to expose the conductive vias and a portion of the guard rings.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 9, 2016
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Duk Ju Na, Lai Yee Chia, Chang Beom Yong
  • Publication number: 20150380339
    Abstract: A semiconductor device has a semiconductor wafer and a conductive via formed through the semiconductor wafer. A portion of the semiconductor wafer is removed such that a portion of the conductive via extends above the semiconductor wafer. A first insulating layer is formed over the conductive via and semiconductor wafer. A second insulating layer is formed over the first insulating layer. The first insulating layer includes an inorganic material and the second insulating layer includes an organic material. A portion of the first and second insulating layers is removed simultaneously from over the conductive via by chemical mechanical polishing (CMP). Alternatively, a first insulating layer including an organic material is formed over the conductive via and semiconductor wafer. A portion of the first insulating layer is removed by CMP. A conductive layer is formed over the conductive via and first insulating layer. The conductive layer is substantially planar.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Inventors: Xing Zhao, Duk Ju Na, Siew Joo Tan, Pandi C. Marimuthu
  • Publication number: 20150380310
    Abstract: A semiconductor device has a semiconductor wafer and a conductive via formed partially through the semiconductor wafer. A portion of the semiconductor wafer and conductive via is removed by a chemical mechanical polishing process. The semiconductor wafer and conductive via are coplanar at first and second surfaces. A first insulating layer and a second insulating layer are formed over the conductive via and semiconductor wafer. The first insulating layer includes an inorganic material and the second insulating layer includes an organic material. An opening in the first and second insulating layers is formed over the conductive via while a second portion of the conductive via remains covered by the first and second insulating layers. A conductive layer is formed over the conductive via and first insulating layer. An interconnect structure is formed over the conductive layer. The semiconductor wafer is singulated into individual semiconductor die.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Inventors: Xing Zhao, Duk Ju Na, Lai Yee Chia
  • Publication number: 20150348861
    Abstract: A semiconductor device has a semiconductor die disposed over the substrate. A conductive via is formed partially through the substrate. An encapsulant is deposited over the semiconductor die and substrate. An insulating layer is formed over the semiconductor die and encapsulant. The insulating layer includes an organic or inorganic insulating material. An adhesive layer is deposited over the insulating layer. The adhesive layer contacts only the insulating layer. A carrier is bonded to the adhesive layer. The insulating layer provides a single CTE across the entire bonding interface between the adhesive layer and semiconductor die and encapsulant. The constant CTE of the insulating layer reduces stress across the bonding interface. A portion of the substrate is removed by backgrinding to expose the conductive via. An insulating layer is formed over the substrate around the conductive via. An interconnect structure is formed over the conductive via.
    Type: Application
    Filed: May 28, 2014
    Publication date: December 3, 2015
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Lai Yee Chia, Duk Ju Na
  • Patent number: 9184104
    Abstract: A semiconductor device has a semiconductor die disposed over the substrate. A conductive via is formed partially through the substrate. An encapsulant is deposited over the semiconductor die and substrate. An insulating layer is formed over the semiconductor die and encapsulant. The insulating layer includes an organic or inorganic insulating material. An adhesive layer is deposited over the insulating layer. The adhesive layer contacts only the insulating layer. A carrier is bonded to the adhesive layer. The insulating layer provides a single CTE across the entire bonding interface between the adhesive layer and semiconductor die and encapsulant. The constant CTE of the insulating layer reduces stress across the bonding interface. A portion of the substrate is removed by backgrinding to expose the conductive via. An insulating layer is formed over the substrate around the conductive via. An interconnect structure is formed over the conductive via.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: November 10, 2015
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Lai Yee Chia, Duk Ju Na
  • Patent number: 9076655
    Abstract: A semiconductor device can be formed by first providing a semiconductor wafer, and forming a conductive via into the semiconductor wafer. A portion of the semiconductor wafer can be removed so that the conductive via extends above a surface of the semiconductor wafer. A first insulating layer can be formed over the surface of the semiconductor wafer and the conductive via, followed by a second insulating layer, the second insulating layer having a different material composition than the first insulating layer. Portions of the insulating layers can be removed to expose the conductive via.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: July 7, 2015
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Duk Ju Na, Calvert Tan, Chang Beom Yong
  • Publication number: 20150179544
    Abstract: A semiconductor device has a substrate including a plurality of conductive vias formed vertically and partially through the substrate. An encapsulant is deposited over a first surface of the substrate and around a peripheral region of the substrate. A portion of the encapsulant around the peripheral region is removed by a cutting or laser operation to form a notch extending laterally through the encapsulant to a second surface of the substrate opposite the first surface of the substrate. A first portion of the substrate outside the notch is removed by chemical mechanical polishing to expose the conductive vias. A second portion of the substrate is removed by backgrinding prior to or after forming the notch. The encapsulant is coplanar with the substrate after revealing the conductive vias. The absence of an encapsulant/base material interface and coplanarity of the molded substrate results in less over-etching or under-etching and fewer defects.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 25, 2015
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Vinoth Kanna Chockanathan, Xing Zhao, Duk Ju Na, Chang Bum Yong
  • Publication number: 20140300002
    Abstract: A semiconductor device includes a plurality of semiconductor die and a plurality of conductive vias formed in the semiconductor die. An insulating layer is formed over the semiconductor die while leaving the conductive vias exposed. An interconnect structure is formed over the insulating layer and conductive vias. The insulating layer is formed using electrografting or oxidation. An under bump metallization is formed over the conductive vias. A portion of the semiconductor die is removed to expose the conductive vias. The interconnect structure is formed over two or more of the conductive vias. A portion of the semiconductor die is removed to leave the conductive vias with a height greater than a height of the semiconductor die. A second insulating layer is formed over the first insulating layer. A portion of the second insulating layer is removed to expose the conductive via.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 9, 2014
    Applicant: STATS ChipPAC, Ltd.
    Inventors: Duk Ju Na, Chang Beom Yong, Pandi C. Marimuthu
  • Publication number: 20140199838
    Abstract: A semiconductor device can be formed by first providing a semiconductor wafer, and forming a conductive via into the semiconductor wafer. A portion of the semiconductor wafer can be removed so that the conductive via extends above a surface of the semiconductor wafer. A first insulating layer can be formed over the surface of the semiconductor wafer and the conductive via, followed by a second insulating layer, the second insulating layer having a different material composition than the first insulating layer. Portions of the insulating layers can be removed to expose the conductive via.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 17, 2014
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Duk Ju Na, Calvert Tan, Chang Beom Yong
  • Publication number: 20130299998
    Abstract: A semiconductor device has a plurality of conductive vias formed into a semiconductor wafer. An insulating lining is formed around the conductive vias and a conductive layer is formed over the insulating lining. A portion of the semiconductor wafer is removed so the conductive vias extend above a surface of the semiconductor wafer. A first insulating layer is formed over the surface of the semiconductor wafer and conductive vias. A first portion of the first insulating layer is removed and a second portion of the first insulating layer remains as guard rings around the conductive vias. A conductive layer is formed over the conductive vias. A second insulating layer is formed over the surface of the semiconductor wafer, guard rings, and conductive vias. A portion of the second insulating layer is removed to expose the conductive vias and a portion of the guard rings.
    Type: Application
    Filed: July 10, 2013
    Publication date: November 14, 2013
    Inventors: Duk Ju Na, Lai Yee Chia, Chang Beom Yong
  • Patent number: 8558389
    Abstract: A semiconductor device has a plurality of conductive vias formed into a semiconductor wafer. An insulating lining is formed around the conductive vias and a conductive layer is formed over the insulating lining. A portion of the semiconductor wafer is removed so the conductive vias extend above a surface of the semiconductor wafer. A first insulating layer is formed over the surface of the semiconductor wafer and conductive vias. A first portion of the first insulating layer is removed and a second portion of the first insulating layer remains as guard rings around the conductive vias. A conductive layer is formed over the conductive vias. A second insulating layer is formed over the surface of the semiconductor wafer, guard rings, and conductive vias. A portion of the second insulating layer is removed to expose the conductive vias and a portion of the guard rings.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: October 15, 2013
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Duk Ju Na, Lai Yee Chia, Chang Beom Yong
  • Publication number: 20130147055
    Abstract: A semiconductor device has a plurality of conductive vias formed into a semiconductor wafer. An insulating lining is formed around the conductive vias and a conductive layer is formed over the insulating lining. A portion of the semiconductor wafer is removed so the conductive vias extend above a surface of the semiconductor wafer. A first insulating layer is formed over the surface of the semiconductor wafer and conductive vias. A first portion of the first insulating layer is removed and a second portion of the first insulating layer remains as guard rings around the conductive vias. A conductive layer is formed over the conductive vias. A second insulating layer is formed over the surface of the semiconductor wafer, guard rings, and conductive vias. A portion of the second insulating layer is removed to expose the conductive vias and a portion of the guard rings.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 13, 2013
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Duk Ju Na, Lai Yee Chia, Chang Beom Yong