Patents by Inventor In B. Chung

In B. Chung 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: 7295278
    Abstract: A cholesteric display may be formed, in some embodiments, using a single display element to produce multi-colors for display. A cholesteric material may be sandwiched between a pair of substrates, each associated with a first pair of opposed electrodes that are arranged generally transversely to the optical axis of incident light. The first pair of electrodes produce one of two liquid crystal states and result in the reflection of light of a particular wavelength. Light of other wavelengths may be reflected when a second pair (or set) of opposed electrodes, arranged generally transversely to the first pair of electrodes, are biased appropriately. A color display may be generated from a single display element by modulating the pitch length of the cholesteric material.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 13, 2007
    Assignee: Intel Corporation
    Inventor: David B. Chung
  • Patent number: 7289176
    Abstract: A liquid crystal display system and cell configuration is disclosed. The element has a first substrate, having a first substrate electrode and a second substrate having a second substrate electrode approximately parallel to the first substrate. In between the two substrates is sandwiched a cholesteric liquid crystalline material. The pitch of the cholesteric material can be controlled by at least two interdigitized electrodes, electrically separated from each other, arranged on the second substrate.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: October 30, 2007
    Assignee: Intel Corporation
    Inventor: David B. Chung
  • Patent number: 6924870
    Abstract: A liquid crystal diffractive light valve includes: a pair of opposed substrates wherein one of the substrates is a silicon wafer with associated electronics. The other substrate has an electrode layer facing the silicon substrate. And a ultraviolet curable composite material is disposed between the substrates which is then phase separated to form polymer walls having liquid crystal directors fixed therein regardless of application of an electric field across the electrode layers, and wherein pixel regions are formed between the polymer walls. The pixel regions have liquid crystal directors which are movable when an electric field is applied across the electrode layers. Application of an electric field allows for generation of phase differences between the wall and pixel regions to allow for Liquid Crystal on Silicon devices to be used as diffractive light valves.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: August 2, 2005
    Assignee: Kent State University
    Inventors: Bin Wang, Philip Bos, David B. Chung
  • Patent number: 6909484
    Abstract: A cholesteric display may be formed, in some embodiments, using a single display element to produce multi-colors for display. A cholesteric material may be sandwiched between a pair of substrates, each associated with pairs of opposed electrodes that are arranged in general transversely to the optical axis of incident light. The first pair of electrodes produce one of two liquid crystal states and result in the reflection of light of a particular wavelength. Light of other wavelengths may be reflected when a second pair (or set) of opposed electrodes, arranged in general transversely, also to the optical axis of incident light, are biased appropriately. So does a third pair (or set) of electrodes. A black and white color display may be generated from a single display element by modulating the pitch length of the cholesteric material within each pairs (or sets).
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: June 21, 2005
    Assignee: Intel Corporation
    Inventors: David B. Chung, Daniel J. Lenehan
  • Patent number: 6774955
    Abstract: Liquid crystal on silicon (LCOS) cells include a plurality of pixel elements formed between substrates. Spacers are formed on a portion of some of the pixel elements and positioned in the cell gap. The spacers on each of these LCOS cells reflecting different colors are formed in different locations in each cell. The result is that substantially none of the spacers create overlapping dead spots in a composite image. The spacers are further distributed among these pixel elements such that spacers are absent from some pixel elements and such that there is a substantially uniform thickness in the cell gaps. The reduced severity of the dead spots in the composite image as a result of the spacers in different locations, the reduced size and number of the spacers, and the uniformity in the cell gaps provide higher optical image quality.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: August 10, 2004
    Assignee: Intel Corporation
    Inventors: David B. Chung, Michael Kozhukh, Sergei Rutman
  • Publication number: 20040125272
    Abstract: A flat panel display system includes a polymer memory provided thereon. The flat panel display may include a viewable portion and a non-viewable portion. In an embodiment, the polymer memory system may be provided on a non-viewable planar surface of the display. Owing to the large viewable area of many flat panel displays, it is expected that the polymer memory system can provide a large memory for a computer or other processor-based device without requiring any change in the device's form factor. Thus, such a system finds ready application in notebook computers, personal digital assistance and other mobile processor-based devices.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Inventors: David B. Chung, Kurt Sehnert
  • Publication number: 20040119926
    Abstract: A liquid crystal display system and cell configuration is disclosed. The element has a first substrate, having a first substrate electrode and a second substrate having a second substrate electrode approximately parallel to the first substrate. In between the two substrates is sandwiched a cholesteric liquid crystalline material. The pitch of the cholesteric material can be controlled by at least two interdigitized electrodes, electrically separated from each other, arranged on the second substrate.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Applicant: Intel Corporation
    Inventor: David B. Chung
  • Publication number: 20040075794
    Abstract: A cholesteric display may be formed, in some embodiments, using a single display element to produce multi-colors for display. A cholesteric material may be sandwiched between a pair of substrates, each associated with pairs of opposed electrodes that are arranged in general transversely to the optical axis of incident light. The first pair of electrodes produce one of two liquid crystal states and result in the reflection of light of a particular wavelength. Light of other wavelengths may be reflected when a second pair (or set) of opposed electrodes, arranged in general transversely, also to the optical axis of incident light, are biased appropriately. So does a third pair (or set) of electrodes. A black and white color display may be generated from a single display element by modulating the pitch length of the cholesteric material within each pairs (or sets).
    Type: Application
    Filed: October 17, 2002
    Publication date: April 22, 2004
    Inventors: David B. Chung, Daniel J. Lenehan
  • Publication number: 20040012750
    Abstract: Liquid crystal on silicon (LCOS) cells include a plurality of pixel elements formed between substrates. Spacers are formed on a portion of some of the pixel elements and positioned in the cell gap. The spacers on each of these LCOS cells reflecting different colors are formed in different locations in each cell. The result is that substantially none of the spacers create overlapping dead spots in a composite image. The spacers are further distributed among these pixel elements such that spacers are absent from some pixel elements and such that there is a substantially uniform thickness in the cell gaps. The reduced severity of the dead spots in the composite image as a result of the spacers in different locations, the reduced size and number of the spacers, and the uniformity in the cell gaps provide higher optical image quality.
    Type: Application
    Filed: July 15, 2003
    Publication date: January 22, 2004
    Applicant: Intel Corporation
    Inventors: David B. Chung, Michael Kozhukh, Sergei Rutman
  • Patent number: 6642987
    Abstract: Liquid crystal on silicon (LCOS) cells include a plurality of pixel elements formed between substrates. Spacers are formed on a portion of some of the pixel elements and positioned in the cell gap. The spacers on each of these LCOS cells reflecting different colors are formed in different locations in each cell. The result is that substantially none of the spacers create overlapping dead spots in a composite image. The spacers are further distributed among these pixel elements such that spacers are absent from some pixel elements and such that there is a substantially uniform thickness in the cell gaps. The reduced severity of the dead spots in the composite image as a result of the spacers in different locations, the reduced size and number of the spacers, and the uniformity in the cell gaps provide higher optical image quality.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: November 4, 2003
    Assignee: Intel Corporation
    Inventors: David B. Chung, Michael Kozhukh, Sergei Rutman
  • Publication number: 20030174268
    Abstract: A cholesteric display may be formed, in some embodiments, using a single display element to produce multi-colors for display. A cholesteric material may be sandwiched between a pair of substrates, each associated with a first pair of opposed electrodes that are arranged generally transversely to the optical axis of incident light. The first pair of electrodes produce one of two liquid crystal states and result in the reflection of light of a particular wavelength. Light of other wavelengths may be reflected when a second pair (or set) of opposed electrodes, arranged generally transversely to the first pair of electrodes, are biased appropriately. A color display may be generated from a single display element by modulating the pitch length of the cholesteric material.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 18, 2003
    Inventor: David B. Chung
  • Publication number: 20030176221
    Abstract: A generalized game device may be used as any or all of a game timing device, a game management device (e.g., scoring), and a game randomization device. Internal memory includes programming that allows user inputs of selectable parameters, such as time allowed and number of dice to be simulated. In one embodiment, the device is a “game tool” that features a display and various controls for setting the selectable parameters. The device includes an input/output arrangement to enable network connectivity with at least one peer device, so that timing operations of the peer devices are synchronized. In a second embodiment, the device is a “game tool hub” that is better suited for games requiring a “Master of Ceremonies.” Any of a number of game tools may be connected to the game tool hub, such as simple lock-in buttons and a “Master of Ceremonies” keypad.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Inventor: Andrew B. Chung
  • Patent number: 6611377
    Abstract: A micromechanical reflection phase grating may be formed of spring-like ribbon reflectors that are secured to a transparent cover positioned over a substrate such as a silicon substrate. The ribbon reflectors are formed independently of the silicon substrate. If a defect occurs in the phase grating and particularly the ribbon reflectors, the top plate assembly can be reworked or discarded without sacrificing the relatively expensive silicon substrate.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: August 26, 2003
    Assignee: Intel Corporation
    Inventor: David B. Chung
  • Publication number: 20030053023
    Abstract: Liquid crystal on silicon (LCOS) cells include a plurality of pixel elements formed between substrates. Spacers are formed on a portion of some of the pixel elements and positioned in the cell gap. The spacers on each of these LCOS cells reflecting different colors are formed in different locations in each cell. The result is that substantially none of the spacers create overlapping dead spots in a composite image. The spacers are further distributed among these pixel elements such that spacers are absent from some pixel elements and such that there is a substantially uniform thickness in the cell gaps. The reduced severity of the dead spots in the composite image as a result of the spacers in different locations, the reduced size and number of the spacers, and the uniformity in the cell gaps provide higher optical image quality.
    Type: Application
    Filed: September 19, 2001
    Publication date: March 20, 2003
    Inventors: David B. Chung, Michael Kozhukh, Sergei Rutman
  • Publication number: 20010049635
    Abstract: The present invention includes an interactive user interface in the form of a banner advertisement having various data form elements and action form elements for receiving input and data provided by a user. The advertisement additionally includes commercial information relating to the product or service that is the primary subject of the advertisement. The advertisement is embedded in one or more web pages of a website so that when such web page is displayed, the advertisement is presented to a user. Upon encountering the advertisement, the user may enter ordering data, preferably by way of a wallet file created by a wallet program and resident on the client computer, into data form elements of the advertisement, thereby defining an order. The wallet program and the wallet file permit the user to populate all of the data form elements of the advertisement simultaneously.
    Type: Application
    Filed: March 29, 2001
    Publication date: December 6, 2001
    Applicant: PEOPLEPUBLISH, INC.
    Inventor: Jeff B. Chung
  • Patent number: 6036882
    Abstract: The present invention provides an improved liquid crystal material comprising a liquid crystal material dispersed in a polymer matrix. The polymeric matrix can be a thermal-based system such as an epoxy-based thermal polymeric system or a UV-curable system such as an acrylate-based polymeric system. The polymeric matrix has a crosslinking density which minimizes the driving voltage while maintaining a good contrast ratio. A process using dynamic mechanical analyzer (DMA) testing identifies a T.sub.g and crosslinking density which are employed to determine the optimum degree of crosslinking.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: March 14, 2000
    Assignee: Fujitsu Limited
    Inventor: David B. Chung
  • Patent number: 6017468
    Abstract: A polymer dispersed liquid crystal material comprising a polymer matrix, a liquid crystal and a diffusing agent.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: January 25, 2000
    Assignee: Fujitsu Limited
    Inventors: David B. Chung, Hideaki Tsuda, Hidefumi Yoshida, Kazutaka Hanaoka, Kimiaki Nakamura, Hideo Chida
  • Patent number: 5942216
    Abstract: Water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating a surfactant system capable of forming liquid crystals as an emulsifier. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: August 24, 1999
    Assignee: Helene Curtis, Inc.
    Inventors: Craig A. Herb, Liang Bin Chen, Judy B. Chung, Michelle A. Long, Wei Mei Sun
  • Patent number: 5614180
    Abstract: A method of treating hair and a hair shampoo-conditioner composition comprising a cleansing surfactant, a water-insoluble primary amine, a sufficient amount of a suitable-acid and a carrier comprising water, are disclosed. The shampoo-conditioner compositions effectively clean and condition the hair.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: March 25, 1997
    Assignee: Helene Curtis, Inc.
    Inventor: Judy B. Chung
  • Patent number: 5589177
    Abstract: Rinse-off, water-in-oil-in-water multiple emulsion compositions are disclosed. The multiple emulsion compositions comprise an external aqueous phase optionally incorporating an emulsifier and/or a second topically-active compound. The internal phase comprises a primary water-in-oil emulsion, wherein the primary emulsion comprises a first topically-active compound, a surfactant phase, an oil phase, and water.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: December 31, 1996
    Assignee: Helene Curtis, Inc.
    Inventors: Craig A. Herb, Liang B. Chen, Judy B. Chung, Michelle A. Long, Wei M. Sun, Gerald P. Newell, Kimberly Kamis, Richard M. Brucks