Patents by Inventor Zhang-Lin Zhou

Zhang-Lin Zhou 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).

  • COPOLYMERS FOR LUMINESCENCE ENHANCEMENT IN REFLECTIVE DISPLAY APPLICATIONS
    Publication number: 20130300281
    Abstract: Copolymers for luminescent enhancement in reflective display applications comprise a functionalized fluorene moiety, including a functional group selected from water-soluble functional groups and/or alcohol-soluble functional groups, and a heterocyclic ring moiety selected from the group consisting of substituted carbazole derivatives, substituted benzothiadiazole derivatives, and substituted phenothiazine derivatives, wherein the respective substituted derivatives include a functional group selected from water-soluble functional groups and/or alcohol-soluble functional groups. Composite materials comprising the copolymers and photoluminescent dyes are also provided, as is a luminescence-based sub-pixel (100).
    Type: Application
    Filed: January 21, 2011
    Publication date: November 14, 2013
    Inventors: Zhang-Lin Zhou, Gary Gibson, Lihua Zhao
  • Reflective display utilizing luminescence
    Publication number: 20130278987
    Abstract: A reflective color display pixel has a top surface for receiving ambient light, and a plurality of sub-pixels including a first sub-pixel. The first sub-pixel has a broadband mirror and a luminescent layer disposed over the broadband mirror. The luminescent layer contains a luminescent material for absorbing a portion of the ambient light and emitting light of a first color, and a light-absorbing material for absorbing light of wavelengths longer than a wavelength of the first color.
    Type: Application
    Filed: December 20, 2010
    Publication date: October 24, 2013
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Xia Sheng, Gary Gibson, Dick Henze, Zhang-Lin Zhou
  • Electronic inks
    Patent number: 8540359
    Abstract: Electronic inks are disclosed herein. The electronic ink includes a non-polar carrier fluid, a plurality of positively charged colorant particles dispersed in the non-polar carrier fluid, and a plurality of reverse co-micelles including a basic charge director and an acidic charge controlling agent. The basic charge director has a molecular weight that is within 5000 of a molecular weight of the acidic charge controlling agent.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: September 24, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Jeffrey Todd Mabeck, Richard H. Henze
  • 2,5-DISUBSTITUTED-1,4-DIAMINOBENZENES
    Publication number: 20130237725
    Abstract: Asymmetrical 2,5-disubstituted-1,4-diaminobenzenes are provided, along with a process for forming both symmetrical and asymmetrical 2,5-disubstituted-1,4-diaminobenzenes.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Inventors: Zhang-Lin Zhou, Si-Ty Lam, Lihua Zhao
  • Modified bodipy dye matrix
    Publication number: 20130208445
    Abstract: The present disclosure is directed towards a modified BODIPY dye matrix, luminescence-based pixels, luminescence-based sub-pixels, and methods using a modified BODIPY dyes. The modified BODIPY dye matrix includes a modified BODIPY dye and a polymer matrix including a radiation absorber.
    Type: Application
    Filed: October 6, 2010
    Publication date: August 15, 2013
    Inventors: Zhang-Lin Zhou, Gary Gibson, Lihua Zhao
  • Emissive dendrimer composition
    Publication number: 20130187538
    Abstract: The present disclosure is directed towards emissive dendrimer compositions, luminescence-based pixels, luminescence-based sub-pixels, and associated methods with an emissive dendrimer having various structures as described herein.
    Type: Application
    Filed: October 7, 2010
    Publication date: July 25, 2013
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Zhang-Lin Zhou, Gary Gibson, Lihua Zhao
  • System And Method For Tri-state Electro-optical Displays
    Publication number: 20130141780
    Abstract: There is provided a display including a display including a number of display cells (400). Each of the display cells (400) includes a first electrode (414), which is transparent and disposed over a front surface of a display cell (400). A second electrode (418) is disposed opposite the first electrode (414). A dielectric layer (404) is disposed between the first electrode (414) and the second electrode (418), and is patterned to create a plurality of recessed volumes (408). A fluid is disposed in a volume defined by the first electrode (414), the dielectric layer (404), and the recessed volumes (408). The fluid (410) comprises a dye of a different color from an adjacent display cell (400). Charged particles (412) are disposed within the fluid (410).
    Type: Application
    Filed: August 9, 2010
    Publication date: June 6, 2013
    Inventors: Yoocharn Jeon, Richard H. Henze, Jong-Souk Yeo, Gary Gibson, Jeffrey Todd Mabeck, Pavel Kornilovich, Gregg Alan Combs, Zhang-Lin Zhou
  • CHARGE TRANSPORT LAYER FOR ORGANIC PHOTOCONDUCTORS
    Publication number: 20130137027
    Abstract: An organic photoconductor includes an inner charge generation layer for generating charges and an outer charge transport layer for facilitating charge transport. The charge transport layer comprises a semi-interpenetrating hole-transport polymer or oligomer network in which the polymer or oligomer is cross-linked. A process for forming a charge transport layer in an organic photoconductor is also provided.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Inventors: Zhang-Lin Zhou, Krzysztof Nauka, Hou T. Ng
  • DUAL COLOR ELECTRONICALLY ADDRESSABLE INK
    Publication number: 20130071690
    Abstract: A dual color electronically addressable ink includes a non-polar carrier fluid; a first colorant of a first color; and a second colorant of a second color that is different than the first color. The first colorant includes a first particle core, and a first functional group attached to a surface of the particle core. The first functional group is capable of carrying a positive charge and is chosen from a base or a salt of the base. The second colorant includes a particle core, and a second functional group attached to a surface of the particle core. The second functional group is capable of carrying a negative charge and is chosen from an acid or a salt of the acid. The ink further includes an additive chosen from polyhydroxystearic amide salt, polyhydroxystearic acid, aromatic butyric acid, and combinations thereof.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 21, 2013
    Inventors: Qin Liu, Zhang-Lin Zhou, Yaron Grinwald, Gil Bar-Haim
  • Electronic inks and displays and image displaying methods
    Patent number: 8356752
    Abstract: An electronic ink containing charged particles includes a combination of resin particles, a pigment, and a charge director. The resin particles exhibit an average particle size less than 1.0 micron and contain a resin that exhibits a molecular weight of 500 to 20,000. The pigment is loaded on the resin particles. The charge director can physically associate with the resin particles. The charged particles may be negative or positive.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: January 22, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaron Grinwald, Stella Stolin Roditi, Yigal Berson, Zhang-Lin Zhou, Gregg Alan Combs, Jeffrey Todd Mabeck, Albert Teishev
  • TRANSFLECTIVE DISPLAYS
    Publication number: 20120320308
    Abstract: A transflective display includes a backlight and a display stack. The display stack includes a liquid crystal layer and an addressing layer operatively connected to the liquid crystal layer. A white electro-optic layer is positioned between the backlight and the display stack.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 20, 2012
    Inventors: Jong-Souk Yeo, Zhang-Lin Zhou, Jeffrey Todd Mabeck
  • Pigment-based inks
    Patent number: 8331014
    Abstract: A pigment-based ink includes a non-polar carrier fluid and pigment particles suspended in the non-polar carrier fluid. The pigment particles have surface functionalized anionic groups. A combination of an electronic display and an electronic ink is provided, as is a method for modifying the pigment particles.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: December 11, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Qin Liu, Zhang-Lin Zhou
  • INKS INCLUDING BLOCK COPOLYMER GRAFTED PIGMENTS VIA AZIDE CHEMISTRY
    Publication number: 20120300284
    Abstract: Pigment based inks are provided. The inks include a non-polar carrier fluid; and a surface-functionalized pigment particle including a nitrogen-inked moiety to the surface of the pigment particle through a nitrogen link at one end of the nitrogen-linked moiety and a block copolymer having at least two blocks attached at another end, the pigment particle suspended in the non-polar carrier fluid. A combination of an electronic display and an electronic ink employing the pigment and a process for making the pigment-based inks are also provided.
    Type: Application
    Filed: May 25, 2011
    Publication date: November 29, 2012
    Inventors: Zhang-Lin Zhou, Qin Liu
  • NITROGEN-LINKED SURFACE FUNCTIONALIZED PIGMENTS FOR INKS
    Publication number: 20120275012
    Abstract: A pigment-based ink is disclosed. The ink includes a non-polar carrier fluid and a nitrogen-linked surface functionalized pigment particle, wherein the nitrogen-linked surface functionalized pigment particle is suspended in the non-polar carrier fluid and includes an azide moiety linked to the surface of a pigment particle. The azide moiety further includes an acidic or a basic functional group bonded to it. An electronic display utilizing the pigment-based ink and a method of formulating the pigment-based ink are also disclosed.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Inventors: Zhang-Lin Zhou, Qin Liu
  • INKS WITH FLUORINATED MATERIAL-SURFACE MODIFIED PIGMENTS
    Publication number: 20120268806
    Abstract: Pigment-based inks with fluorinated material-surface modified pigments are provided. The inks include a non-polar carrier fluid, and pigment particles suspended in the non-polar carrier fluid. The pigment particles either have fluorinated acidic functional groups, which are charged through basic charge directors to give negatively charged pigment dispersions, or have fluorinated basic functional groups, which are charged thorough acidic charge directors to give positively charged pigment dispersions. A combination of an electronic display and an electronic ink is also provided, as is a method for modifying the pigment particles.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 25, 2012
    Inventors: Zhang-Lin Zhou, Jong-Souk Yeo, Qin Liu
  • Acid-functionalized hydrophobic monomer emulsions, latexes, and associated latexes
    Patent number: 8283413
    Abstract: The present invention is drawn to an aqueous emulsion composition. The composition includes an aqueous phase and a hydrophobic phase dispersed in the aqueous phase, which includes a plurality of hydrophobic monomers. The monomers are acid-functionalized and hydrophobic, with less than 10% solubility in water. In one aspect, the monomers can be aromatic. Such monomers can be polymerized with other monomers to form latex particulates. A latex can include latex particulates dispersed in an aqueous fluid medium. In one embodiment, latex particulates can include from about 0.1 wt % to about 25 wt % of polymerized hydrophobic acid-functionalized monomer, and at least one other polymerized film-forming monomer. The latex can be formulated as an ink-jet ink.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: October 9, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Zhang-Lin Zhou
  • ELECTRONIC INKS
    Publication number: 20120241695
    Abstract: Electronic inks are disclosed herein. The electronic ink includes a non-polar carrier fluid, a plurality of positively charged colorant particles dispersed in the non-polar carrier fluid, and a plurality of reverse co-micelles including a basic charge director and an acidic charge controlling agent. The basic charge director has a molecular weight that is within 5000 of a molecular weight of the acidic charge controlling agent.
    Type: Application
    Filed: October 16, 2009
    Publication date: September 27, 2012
    Inventors: Zhang-Lin Zhou, Jeffrey Todd Mabeck, Richard H. Henze
  • Functionalized latex polymer and method of forming the same
    Patent number: 8273933
    Abstract: A method for forming a functionalized latex polymer includes polymerizing a heterogeneous dispersion of water insoluble monomers in water, thereby forming a latex polymer. An at least partially water soluble halogenated non-ionic group is reacted with the latex polymer, whereby a halogen is displaced from the non-ionic group, thereby forming an at least partially water soluble non-ionic group that attaches to the latex polymer.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 25, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Zhang-Lin Zhou, Kent Vincent
  • DUAL COLOR ELECTRONICALLY ADDRESSABLE INK
    Publication number: 20120190782
    Abstract: A dual color electronically addressable ink includes a non-polar carrier fluid, a first colorant of a first color, and a second colorant of a second color that is different than the first color. The first colorant includes a particle core, and a basic functional group attached to a surface of the particle core. The second colorant includes a particle core, and an acidic functional group attached to a surface of the particle core. The acidic functional group and the basic functional group are configured to interact within the non-polar carrier fluid to generate a charge on the first colorant and an opposite charge on the second colorant.
    Type: Application
    Filed: October 16, 2009
    Publication date: July 26, 2012
    Inventors: Zhang-Lin Zhou, Jeffrey Todd Mabeck, Richard H. Henze
  • PROCESS FOR PRODUCING POSITIVELY CHARGED POLYMER ENCAPSULATED PARTICLES
    Publication number: 20120187346
    Abstract: A process for producing positively charged polymer encapsulated particles which have a size of less than 5 ?m and which include a positively charged polymer shell surrounding a core of particle. The process includes the steps of, firstly, dispersing the core particles in an aqueous solution; adding a mixture of monomers either before or after the dispersion step; then, polymerizing the monomers in view of obtaining polymer encapsulated particles, wherein the polymer shell of the particle includes polymers or co-polymers that have a functional group FG. Finally, the process includes the step of dispersing the encapsulated particles with surfactants and charge directors in view of obtaining positively charged encapsulated particle dispersions.
    Type: Application
    Filed: October 16, 2009
    Publication date: July 26, 2012
    Inventors: Doris Pik-Yiu Chun, Hou T. Ng, Zhang-Lin Zhou