Patents by Inventor Tien-Chang Chang

Tien-Chang 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: 8138616
    Abstract: A bond pad structure of an integrated circuit includes a conductive pad disposed on a first dielectric layer, a first conductive block formed in a second dielectric layer below the first dielectric layer and electrically connected to the conductive pad through a first via plug formed in the first dielectric layer, and an electrically floating first conductive plate situated under the conductive pad.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: March 20, 2012
    Assignee: Mediatek Inc.
    Inventors: Tien-Chang Chang, Tao Cheng, Chien-Hui Chuang, Bo-Shih Huang
  • Publication number: 20100295146
    Abstract: A seal ring structure for an integrated circuit includes a seal ring being disposed along a periphery of the integrated circuit and being divided into at least a first portion and a second portion, wherein the second portion is positioned facing an analog and/or RF circuit block and is different from the first portion in structure. A P+ region is provided in a P substrate and positioned under the second portion. A shallow trench isolation (STI) structure surrounds the P+ region and laterally extends underneath a conductive rampart of the second portion.
    Type: Application
    Filed: August 5, 2010
    Publication date: November 25, 2010
    Inventors: Tung-Hsing Lee, Tien-Chang Chang, Yuan-Hung Chung
  • Publication number: 20100276805
    Abstract: An integrated circuit chip includes a semiconductor substrate; a first interconnection wire having a first portion and a second portion on the semiconductor substrate, wherein the second portion is separated from the first portion; a second interconnection wire situated under the first interconnection wire; a first conductive via electrically coupling the first portion with the second interconnection wire; a conductive layer situated between the first interconnection wire and the second interconnection wire; and a second conductive via electrically coupling the conductive layer with the second portion.
    Type: Application
    Filed: May 4, 2009
    Publication date: November 4, 2010
    Inventors: Chao-Chun Tu, Shih-Hung Lin, Chih-Chien Huang, Tien-Chang Chang
  • Publication number: 20100102421
    Abstract: An integrated circuit chip includes an analog and/or RF circuit block and a seal ring structure surrounding the analog and/or RF circuit block. The seal ring structure comprises a continuous outer seal ring and an inner seal ring, wherein the inner seal ring comprises a gap that is situated in front of the analog and/or RF circuit block.
    Type: Application
    Filed: December 31, 2009
    Publication date: April 29, 2010
    Inventors: Tien-Chang Chang, Shi-Bai Chen, Tao Cheng, Yu-Hua Huang
  • Publication number: 20100065943
    Abstract: A method for including decoupling capacitors into a semiconductor circuit having at least a logic circuit therein, includes: arranging a first decoupling capacitor and a second decoupling capacitor into a first area and a second area around the logic circuit respectively, wherein a gate oxide thickness of the first decoupling capacitor is different from a gate oxide thickness of the second decoupling capacitor.
    Type: Application
    Filed: September 17, 2008
    Publication date: March 18, 2010
    Inventors: Tien-Chang Chang, Ming-Tzong Yang, Tao Cheng, Cheng-Hsing Chien, Hsin-Hsin Hsiao
  • Publication number: 20100059867
    Abstract: An integrated circuit chip includes an analog and/or RF circuit block, a digital circuit, and a seal ring structure surrounding and protecting the analog and/or RF circuit block. The seal ring structure comprises a continuous outer seal ring, and a discontinuous inner seal ring divided into at least a first portion and a second portion. The second portion is situated in front of the analog and/or RF circuit block for shielding a noise from interfering the analog and/or RF circuit block.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 11, 2010
    Inventors: Tien-Chang Chang, Shi-Bai Chen, Tao Cheng
  • Patent number: 7671469
    Abstract: A semiconductor device with dummy patterns for alleviating micro-loading effect includes a semiconductor substrate having thereon a middle annular region between an inner region and an outer region; a SiGe device on the semiconductor substrate within the inner region; and a plurality of dummy patterns provided on the semiconductor substrate within the middle annular region. At least one of the dummy patterns contains SiGe.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: March 2, 2010
    Assignee: Mediatek Inc.
    Inventors: Tung-Hsing Lee, Ming-Tzong Yang, Tao Cheng, Ching-Chung Ko, Tien-Chang Chang, Yu-Tung Chang
  • Patent number: 7667302
    Abstract: An integrated circuit chip includes an analog and/or RF circuit block, a digital circuit, and a seal ring structure surrounding and protecting the analog and/or RF circuit block. The seal ring structure comprises a continuous outer seal ring, and a discontinuous inner seal ring divided into at least a first portion and a second portion. The second portion is situated in front of the analog and/or RF circuit block for shielding a noise from interfering the analog and/or RF circuit block.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: February 23, 2010
    Assignee: Mediatek Inc.
    Inventors: Tien-Chang Chang, Shi-Bai Chen, Tao Cheng
  • Publication number: 20100001412
    Abstract: A bond pad structure of an integrated circuit includes a conductive pad disposed on a first dielectric layer, a first conductive block formed in a second dielectric layer below the first dielectric layer and electrically connected to the conductive pad through a first via plug formed in the first dielectric layer, and an electrically floating first conductive plate situated under the conductive pad.
    Type: Application
    Filed: July 7, 2008
    Publication date: January 7, 2010
    Inventors: Tien-Chang Chang, Tao Cheng, Chien-Hui Chuang, Bo-Shih Huang
  • Publication number: 20090294929
    Abstract: A seal ring structure disposed along a periphery of an integrated circuit. The seal ring is divided into at least a first portion and a second portion. The second portion is positioned facing and shielding an analog and/or RF circuit block from a noise. A deep N well is disposed in a P substrate and is positioned under the second portion. The deep N well reduces the substrate noise coupling.
    Type: Application
    Filed: November 19, 2008
    Publication date: December 3, 2009
    Inventors: Tung-Hsing Lee, Tien-Chang Chang, Yuan-Hung Chung
  • Publication number: 20090294897
    Abstract: A seal ring structure for an integrated circuit includes a seal ring disposed along a periphery of the integrated circuit, wherein the seal ring is divided into at least a first portion and a second portion, and wherein the second portion is positioned facing and shielding an analog and/or RF circuit block from a noise. A P+ region is provided in a P substrate and positioned under the second portion. A shallow trench isolation (STI) structure surrounds the P+ region and laterally extends underneath a conductive rampart of the second portion.
    Type: Application
    Filed: December 21, 2008
    Publication date: December 3, 2009
    Inventors: Tung-Hsing Lee, Tien-Chang Chang, Yuan-Hung Chung
  • Publication number: 20090215277
    Abstract: A dual CESL process includes: (1) providing a substrate having thereon a first device region, a second device region and a shallow trench isolation (STI) region between the first and second device regions; (2) forming a first-stress imparting film with a first stress over the substrate, wherein the first-stress imparting film does not cover the second device region; and (3) forming a second-stress imparting film with a second stress over the substrate, wherein the second-stress imparting film does not cover the first device region, an overlapped boundary between the first- and second-stress imparting films is created directly above the STI region, and wherein the overlapped boundary is placed in close proximity to the second device region in order to induce the first stress to a channel region thereof in a transversal direction.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 27, 2009
    Inventors: Tung-Hsing Lee, Ming-Tzong Yang, Ching-Chung Ko, Tien-Chang Chang, Yu-Tung Chang
  • Publication number: 20090166676
    Abstract: A semiconductor device with dummy patterns for alleviating micro-loading effect includes a semiconductor substrate having thereon a middle annular region between an inner region and an outer region; a SiGe device on the semiconductor substrate within the inner region; and a plurality of dummy patterns provided on the semiconductor substrate within the middle annular region. At least one of the dummy patterns contains SiGe.
    Type: Application
    Filed: December 31, 2007
    Publication date: July 2, 2009
    Inventors: Tung-Hsing Lee, Ming-Tzong Yang, Tao Cheng, Ching-Chung Ko, Tien-Chang Chang, Yu-Tung Chang
  • Publication number: 20090057907
    Abstract: An interconnection structure includes an inter-layer dielectric; a topmost copper metal layer inlaid into the inter-layer dielectric; an insulating layer disposed on the inter-layer dielectric and the topmost copper metal layer; a via opening in the insulating layer for exposing a top surface of the topmost copper metal layer, wherein the via opening consists of an inwardly tapered upper via portion and a lower via portion having a substantially vertical sidewall profile; and an aluminum layer filling into the via opening.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 5, 2009
    Inventors: Ming-Tzong Yang, Tien-Chang Chang
  • Publication number: 20020109105
    Abstract: The invention provides a method of ion implantation, comprising forming a shield layer over a provided substrate. After forming the shield layer, a photoresist layer is formed over the substrate and then patterned by photolithography and etching. Using the patterned photoresist layer as a mask, an ion implantation step is performed with a tilt angle of zero degree. Next, the shield layer can be removed simultaneously during the process of removing the photoresist layer.
    Type: Application
    Filed: February 13, 2001
    Publication date: August 15, 2002
    Inventors: Chien-Chih Lin, Michael WC Huang, Tien-Chang Chang