Patents by Inventor Roger Chang

Roger 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: 10676671
    Abstract: The present invention relates to a method of reducing ODF mura in liquid crystal (LC) displays of the polymer sustained alignment (PSA) type and to PSA LC displays made by this method.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 9, 2020
    Assignee: Merck Patent GmbH
    Inventors: Leo Weegels, Roger Chang, Ky Lin
  • Publication number: 20180201837
    Abstract: The present invention relates to a method of reducing ODF mura in liquid crystal (LC) displays of the polymer sustained alignment (PSA) type and to PSA LC displays made by this method.
    Type: Application
    Filed: June 23, 2016
    Publication date: July 19, 2018
    Applicant: Merck Patent GmbH
    Inventors: Leo WEEGELS, Roger CHANG, Ky LIN
  • Publication number: 20160230475
    Abstract: A drilling riser buoyancy module comprises two opposite complementary halves each having complementary co-axially extending central opening for a flow line and at least five complementary axially extending secondary openings for receiving auxiliary lines. Each complementary half comprising foam bounded by an interior surface and an exterior surface. A portion of the interior surfaces of complementary halves contact each another.
    Type: Application
    Filed: February 8, 2016
    Publication date: August 11, 2016
    Inventors: Majdi Haddad, Roger Chang, Mark Schlegel, Louis Kabelka
  • Publication number: 20130037745
    Abstract: The present invention relates to a liquid-crystalline medium, characterised in that it contains a polymerisable component (A) containing one more polymerisable compounds and a liquid-crystalline component (B) containing one more compounds of the general formula I and/or IA in which R0, X0 and L1-6 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 14, 2013
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Gavin HUNG, Roger CHANG, Kris TSAI, Glavin OYANG
  • Patent number: 7892412
    Abstract: A manufacturing process of an embedded type flexible or rigid printed circuit board includes multiple steps. First, a layer of dry film is applied to a layer of copper foil. Then a circuit pattern is formed on the copper foil through photolithography processes. An etching stop layer is electroplated on the copper foil according to the circuit pattern. The etching stop layer is then electroplated with copper. The copper foil is softened by a high temperature process after removing the dry film. Then the layer of the copper foil is etched after coating with an organic layer and the organic layer is solidified.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: February 22, 2011
    Assignee: Mutual-Tek Industries Co., Ltd.
    Inventor: Roger Chang
  • Patent number: 7844892
    Abstract: The invention provides improved mechanisms for the construction and rendering of graphical results sets for business intelligence reports derived from large volumes of data. This is achieved by various means including, determining the amount of useful data that can be rendered within the available display space while still being legible, determining the most effective way of displaying that data within the display space, and providing for limited control of the format and quantity of data displayed.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: November 30, 2010
    Assignee: International Business Machines Corporation
    Inventors: Nadia Shewchenko, Henning Hoffmann, Roger Chang, Lesley Grignon
  • Patent number: 7603771
    Abstract: A method of providing at least two multilayer circuit boards, combining the at least two multilayer circuit boards to form a combined multilayer circuit board, and forming multiple outer conductive vias, circuits and contacts on the combined multilayer circuit board. Each multilayer circuit board is fabricated by the steps of preparing a single-layer printed circuit board having multiple chip sections, attaching at least one chip to the corresponding chip section, attaching a frame having multiple enclosures to the single-layer printed circuit board, attaching a semi-fluid glue sheet to the frame, vacuum pressing a conductive layer on the semi-fluid glue sheet and forming multiple conductive inner vias through the multilayer circuit board. The at least two multilayer circuit boards are combined by steps of reversing one of the multilayer circuit boards and vacuum pressing other multilayer circuit boards on the reversed multilayer circuit board.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: October 20, 2009
    Assignee: Mutual-Tek Industries Co., Ltd.
    Inventor: Roger Chang
  • Patent number: 7505282
    Abstract: A multilayer circuit board has a bottom and an upper multilayer circuit boards, a glue layer, multiple outer contact vias and two insulating lacquer layers. The bottom and the upper multilayer circuit boards respectively have multiple conductive wires, an insulating layer, a frame, multiple chips, a press laminate, a patterned conductive layer and at least one inner contact via. The glue layer sticks the bottom and the upper multilayer circuit boards together. The multiple contact vias are formed through the bottom and the upper multilayer circuit boards to electronically interconnect the conductive wires and the patterned conductive layers in the bottom and the upper multilayer circuit boards. The insulating lacquer layers are respectively coated under and on portions of the patterned conductive layers in the bottom and the upper multilayer circuit boards to protect the patterned conductive layers, wherein the un-coated patterned conductive layers become multiple contacts.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: March 17, 2009
    Assignee: Mutual-TEK Industries Co., Ltd.
    Inventor: Roger Chang
  • Publication number: 20090056118
    Abstract: A method has acts of providing at least two multilayer circuit boards, combining the at least two multilayer circuit boards to form a combined multilayer circuit board, forming multiple outer conductive vias, circuits and contacts on the combined multilayer circuit board. Each multilayer circuit board is fabricated by steps of preparing a single-layer printed circuit board having multiple chip sections, attaching at least one chip to the corresponding chip section, attaching a frame having multiple enclosures to the single-layer printed circuit board, attaching a semi-fluid glue sheet to the frame, vacuum pressing a conductive layer on the semi-fluid glue sheet and forming multiple conductive inner vias through the multilayer circuit board. The at least two multilayer circuit boards are combined by steps of reversing one of the multilayer circuit boards and vacuum pressing other multilayer circuit boards on the reversed multilayer circuit board.
    Type: Application
    Filed: October 31, 2008
    Publication date: March 5, 2009
    Inventor: Roger CHANG
  • Publication number: 20080101044
    Abstract: A multilayer circuit board has a bottom and an upper multilayer circuit boards, a glue layer, multiple outer contact vias and two insulating lacquer layers. The bottom and the upper multilayer circuit boards respectively have multiple conductive wires, an insulating layer, a frame, multiple chips, a press laminate, a patterned conductive layer and at least one inner contact via. The glue layer sticks the bottom and the upper multilayer circuit boards together. The multiple contact vias are formed through the bottom and the upper multilayer circuit boards to electronically interconnect the conductive wires and the patterned conductive layers in the bottom and the upper multilayer circuit boards. The insulating lacquer layers are respectively coated under and on portions of the patterned conductive layers in the bottom and the upper multilayer circuit boards to protect the patterned conductive layers, wherein the un-coated patterned conductive layers become multiple contacts.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventor: Roger Chang
  • Publication number: 20080057627
    Abstract: A method has acts of providing at least two multilayer circuit boards, combining the at least two multilayer circuit boards to form a combined multilayer circuit board, forming multiple outer conductive vias, circuits and contacts on the combined multilayer circuit board. Each multilayer circuit board is fabricated by steps of preparing a single-layer printed circuit board having multiple chip sections, attaching at least one chip to the corresponding chip section, attaching a frame having multiple enclosures to the single-layer printed circuit board, attaching a semi-fluid glue sheet to the frame, vacuum pressing a conductive layer on the semi-fluid glue sheet and forming multiple conductive inner vias through the multilayer circuit board. The at least two multilayer circuit boards are combined by steps of reversing one of the multilayer circuit boards and vacuum pressing other multilayer circuit boards on the reversed multilayer circuit board.
    Type: Application
    Filed: August 29, 2006
    Publication date: March 6, 2008
    Inventor: Roger Chang
  • Publication number: 20080046805
    Abstract: The invention provides improved mechanisms for the construction and rendering of graphical results sets for business intelligence reports derived from large volumes of data. This is achieved by various means including, determining the amount of useful data that can be rendered within the available display space while still being legible, determining the most effective way of displaying that data within the display space, and providing for limited control of the format and quantity of data displayed.
    Type: Application
    Filed: August 17, 2006
    Publication date: February 21, 2008
    Applicant: Cognos Incorporated
    Inventors: Nadia Shewchenko, Henning Hoffmann, Roger Chang, Lesley Grignon
  • Publication number: 20070295606
    Abstract: A manufacturing process of an embedded type flexible or rigid printed circuit board includes multiple steps. First, a layer of dry film is applied to a layer of copper foil. Then a circuit pattern is formed on the copper foil through photolithography processes. An etching stop layer is electroplated on the copper foil according to the circuit pattern. The etching stop layer is then electroplated with copper. The copper foil is softened by a high temperature process after removing the dry film. Then the layer of the copper foil is etched after coating with an organic layer and the organic layer is solidified.
    Type: Application
    Filed: September 6, 2007
    Publication date: December 27, 2007
    Applicant: MUTUAL-TEK INDUSTRIES CO., LTD.
    Inventor: Roger Chang
  • Patent number: 7297285
    Abstract: A manufacturing process of an emboss type flexible or rigid printed circuit board includes multiple steps. First, a layer of dry film is applied to a layer of copper foil. Then a circuit pattern is formed on the copper foil through photolithography processes. An etching stop layer is electroplated on the circuit pattern. The etching stop layer is then electroplated with copper. The copper foil is softened by a high temperature process after removing the dry film. Then the layer of the copper foil is etched after coating with an organic surface layer and the organic surface layer is solidified.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 20, 2007
    Inventor: Roger Chang
  • Publication number: 20070029204
    Abstract: A manufacturing process of an emboss type flexible or rigid printed circuit board includes multiple steps. First, a layer of dry film is applied to a layer of copper foil. Then a circuit pattern is formed on the copper foil through photolithography processes. An etching stop layer is electroplated on the circuit pattern. The etching stop layer is then electroplated with copper. The copper foil is softened by a high temperature process after removing the dry film. Then the layer of the copper foil is etched after coating with an organic surface layer and the organic surface layer is solidified.
    Type: Application
    Filed: August 5, 2005
    Publication date: February 8, 2007
    Inventor: Roger Chang
  • Publication number: 20060005112
    Abstract: A conditional layout system for rendering and formatting content in a report is provided. The conditional layout system comprises an element receiving unit for receiving a variable element referenced in a report element, a condition processing unit for calculating a condition value based upon an expression in the variable element, and an element rendering unit for conditionally rendering and formatting report elements based upon the condition value.
    Type: Application
    Filed: July 2, 2004
    Publication date: January 5, 2006
    Inventors: David Lilly, Eric McCully, Roger Chang
  • Patent number: 6978817
    Abstract: A method for manufacturing a fluoropolymer compound plate comprises the steps of: combining a fluoropolymer sheet and a medium plate as a fluoropolymer compound plate; transferring the fluoropolymer compound plate to a preheat section for being heated uniformly in a lower tension, transferring the fluoropolymer compound plate to a melting section for heating the fluoropolymer sheet of the fluoropolymer compound plate; transferring the fluoropolymer compound plate to a pressing section by rollers; and compressing and annealing the fluoropolymer compound plate. A device for performing the method comprises a plurality of tension adjusting axial seats; a plurality of roller; a pair of first guide wheels; an upper and a lower layer radiating heater; a third guide wheel set; an upper and a lower layer high temperature radiating heater; a guiding roller; a shaping heater; a plurality of temperature controller roller sets and a product winding wheel.
    Type: Grant
    Filed: February 17, 2003
    Date of Patent: December 27, 2005
    Assignee: Allied Supreme Corp
    Inventors: Amber Ho, Roger Chang
  • Publication number: 20050275081
    Abstract: An embedded chip semiconductor has a substrate, at least one chip, an encapsulant, two circuit patterns and multiple contact vias. The substrate has a top surface, a bottom surface and at least one chip recess. The at least one chip has multiple terminals and is mounted in a corresponding chip recess. The thickness of the chip is equal to or less than the thickness of the substrate. The encapsulant is formed in the chip recess to hold the chip. The circuit patterns are respectively formed on the top and bottom surfaces of the substrate and one of the circuit patterns is connected to the multiple terminals of the chip. The two circuit patterns on two surfaces of the substrate are connected through the multiple contact vias. Therefore, the semiconductor has dual electronic connection faces to be suitable for different applications.
    Type: Application
    Filed: June 12, 2004
    Publication date: December 15, 2005
    Inventor: Roger Chang
  • Publication number: 20050248259
    Abstract: A bent lead light emitting diode device having a heat dissipating capability mainly has a flat chip seat, a horizontal and vertical separation layers, at least two bent leads, at least one light emitting diode chip and a transparent cover. A tapered recess is defined in an upper flat surface of the chip seat where the light emitting diode chip is mounted. The bent leads arranged around the chip seat are separated from the chip seated by the horizontal and vertical separation layers and connected to the chip wire bondings. When the bent lead light emitting diode device is operating, heat is conducted away by the chip seat. The chip seat is flat so the horizontal and vertical separation layers between the chip seat and the bent leads do not have to be a specific shape.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Inventor: Roger Chang
  • Publication number: 20050248029
    Abstract: An embedded chip semiconductor has a substrate, at least one chip, an insulation boundary and a circuit pattern. The substrate has a thickness, a top surface, a bottom surface and at least one chip recess. The at least one chip has a thickness, a top face, a bottom face, outer edges and multiple terminals and is mounted in a corresponding chip recess. The thickness of the chip is equal to or less than the thickness of the substrate. The insulation boundary is formed in the chip recess around the edges of the chip. The circuit pattern is formed on the bottom surface of the nonmetallic substrate and connected to the multiple terminals of the chip. Therefore, a printed circuit board making process is employed to mass-produce the semiconductors. Further, the chip connected to the circuit pattern does not the wire bondings so the semiconductor fabrication process has good yield.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Inventor: Roger Chang