Patents Represented by Attorney, Agent or Law Firm David J. Cole
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Patent number: 8064962Abstract: A portable electronic device, for example a cellular telephone or a personal digital assistant, has an internal screen for the display of information, the electronic device also having an external screen arranged to receive information from the electronic device and being capable of displaying this information on an electro-optic medium. There is also provided a cellular telephone having a visual indicator comprising an electro-optic medium having at least two different display states, the electro-optic medium being arranged to change its display state when a call is received by the telephone.Type: GrantFiled: May 9, 2006Date of Patent: November 22, 2011Assignee: E Ink CorporationInventors: Russell J. Wilcox, Gregory L. Goldfarb, Holly G. Gates, Pehr C. Anderson
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Patent number: 8054526Abstract: A color filter array comprises orange, lime and purple sub-pixels, optionally with the addition of white sub-pixels. The color filter array is useful in electro-optic displays, especially reflective electro-optic displays. A method is provided for converting RGB images for use with the new color filter array.Type: GrantFiled: March 23, 2009Date of Patent: November 8, 2011Assignee: E Ink CorporationInventor: Alain Bouchard
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Patent number: 8049947Abstract: A display assembly comprises a backplane assembly comprising a plurality of spaced backplane areas, each backplane area comprising a plurality of electrodes, the backplane areas being separated by gutter areas free from electrodes; an adhesive layer overlying the plurality of spaced backplane areas; and a layer of a solid electro-optic medium overlying the adhesive layer in the plurality of spaced backplane areas. The display sub-assembly can be produced via a single lamination and severed to form a plurality of separate electro-optic displays. Processes for producing the display assembly are also described.Type: GrantFiled: August 31, 2009Date of Patent: November 1, 2011Assignee: E Ink CorporationInventors: Guy M. Danner, Valerie C. Northrop, Jonathan L. Zalesky, Matthew Joseph Kayal, Steven J. O'Neil
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Patent number: 8040594Abstract: A multi-color electrophoretic medium contains first, second and third species of particles, the particles having substantially non-overlapping electrophoretic mobilities and bring of three different colors. The particles are dispersed in a fluid having a fourth color. A method for driving such a display is also described.Type: GrantFiled: March 17, 2010Date of Patent: October 18, 2011Assignee: E Ink CorporationInventors: Richard J. Paolini, Jr., George G. Harris, Jonathan D. Albert, Barrett Comiskey
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Patent number: 8035886Abstract: A system of electronically active inks is described which may include electronically addressable contrast media, conductors, insulators, resistors, semiconductive materials, magnetic materials, spin materials, piezoelectric materials, optoelectronic, thermoelectric or radio frequency materials. We further describe a printing system capable of laying down said materials in a definite pattern. Such a system may be used for instance to: print a flat panel display complete with onboard drive logic; print a working logic circuit onto any of a large class of substrates; print an electrostatic or piezoelectric motor with onboard logic and feedback or print a working radio transmitter or receiver.Type: GrantFiled: November 2, 2006Date of Patent: October 11, 2011Assignee: E Ink CorporationInventor: Joseph M. Jacobson
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Patent number: 8034209Abstract: An electro-optic display is produced using a sub-assembly comprising a front sheet, an electro-optic medium; and an adhesive layer. An aperture is formed through the adhesive layer where the adhesive layer is not covered by the electro-optic medium, and the sub-assembly is adhered to a backplane having a co-operating member with the aperture engaged with a co-operating member, thus locating the sub-assembly relative to the backplane. In another form of electro-optic display, a chip extends through an aperture in the electro-optic medium and adhesive layer. In a third form, the aforementioned sub-assembly is secured to a backplane and then a cut is made through both backplane and sub-assembly to provide an aligned edge.Type: GrantFiled: June 27, 2008Date of Patent: October 11, 2011Assignee: E Ink CorporationInventors: Guy M. Danner, Valerie C. Northrop, Jonathan D. Albert, Holly G. Gates, Erik van Veenendaal, Fredericus J. Touwslager
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Patent number: 8027081Abstract: Various types of edge seals for protecting electro-optic displays against environmental contaminants are described. In one type of seal, the electro-optic layer is sandwiched between a backplane and a protective sheet and a sealing material extends between the backplane and the protective sheet. In other seals, the protective sheet is secured to the backplane or to a second protective sheet adjacent the backplane. The electro-optic layer can also be sealed between two layers of adhesive or between one layer of adhesive and the backplane. Other seals make use of flexible tapes extending around the periphery of the display.Type: GrantFiled: October 28, 2009Date of Patent: September 27, 2011Assignee: E Ink CorporationInventors: Guy M. Danner, Shamus Ford Patry, Charles Howie Honeyman, Thomas H. Whitesides, Michael D. McCreary, Gregg M. Duthaler
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Patent number: 8018640Abstract: A particle for use in an electrophoretic display comprises a light-scattering inorganic core and a light-transmissive colored shell of an organic pigment. In preferred particles, the core is titania and the shell is formed of particles having an average particle size less than 700 nm. The particles are produced by treating a light-scattering inorganic pigment with a polymer which adsorbs on both the inorganic pigment and an organic pigment; and adding the organic pigment and allowing the organic pigment to mix with the polymer-coated inorganic pigment.Type: GrantFiled: July 12, 2007Date of Patent: September 13, 2011Assignee: E Ink CorporationInventors: Thomas H. Whitesides, Andrew Y. Oleson
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Patent number: 8009344Abstract: A multi-layer film, useful as a front sub-assembly in electro-optic displays, comprises, in this order: a light-transmissive electrically-conductive layer (114); a light-transmissive first protective layer (112); a light-transmissive moisture barrier layer (108); and a light-transmissive second protective layer (106). This multi-layer film can be used in forming an electro-optic display by the processes described in U.S. Pat. No. 6,982,179 or Patent Publication No. 2007/0109219.Type: GrantFiled: December 10, 2009Date of Patent: August 30, 2011Assignee: E Ink CorporationInventors: Guy M. Danner, Sandra Rifai
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Patent number: 8009348Abstract: A reflective electro-optic display (200) has a bar code display area (206) arranged to display a bar code readable by a bar code scanner.Type: GrantFiled: June 9, 2006Date of Patent: August 30, 2011Assignee: E Ink CorporationInventors: Robert W. Zehner, Barrett Comiskey, Russell J. Wilcox
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Patent number: 7999787Abstract: A dielectrophoretic display has a substrate having walls defining a cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface. A fluid is contained within the cavity; and a plurality of particles are present in the fluid. There is applied to the substrate an electric field effective to cause dielectrophoretic movement of the particles so that the particles occupy only a minor proportion of the viewing surface.Type: GrantFiled: August 31, 2005Date of Patent: August 16, 2011Assignee: E Ink CorporationInventors: Karl R. Amundson, Alexi C. Arango, Joseph M. Jacobson, Thomas H. Whitesides, Michael D. McCreary, Richard J. Paolini, Jr.
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Patent number: 7995871Abstract: Titania is a semiconductor and photocatalyst that is also chemically inert. With its bandgap of 3.0, to activate the photocatalytic property of titania requires light of about 390 nm wavelength, which is in the ultra-violet, where sunlight is very low in intensity. A method and devices are disclosed wherein stress is induced and managed in a thin film of titania in order to shift and lower the bandgap energy into the longer wavelengths that are more abundant in sunlight. Applications of this stress-induced bandgap-shifted titania photocatalytic surface include photoelectrolysis for production of hydrogen gas from water, photovoltaics for production of electricity, and photocatalysis for detoxification and disinfection.Type: GrantFiled: January 10, 2009Date of Patent: August 9, 2011Assignee: Nanoptek CorporationInventor: John M. Guerra
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Patent number: 7992528Abstract: Titania is a semiconductor and photocatalyst that is also chemically inert. With its bandgap of 3.0, to activate the photocatalytic property of titania requires light of about 390 nm wavelength, which is in the ultra-violet, where sunlight is very low in intensity. A method and devices are disclosed wherein stress is induced and managed in a thin film of titania in order to shift and lower the bandgap energy into the longer wavelengths that are more abundant in sunlight. Applications of this stress-induced bandgap-shifted titania photocatalytic surface include photoelectrolysis for production of hydrogen gas from water, photovoltaics for production of electricity, and photocatalysis for detoxification and disinfection.Type: GrantFiled: January 2, 2009Date of Patent: August 9, 2011Assignee: Nanoptek CorporationInventor: John M. Guerra
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Patent number: 7986450Abstract: A polyurethane formed from an isocyanate, a polyether diol and a polyester diol, the polyester diol having a molecular weight less than about 2000, or comprising two polyester diol segments connected by a steric hindrance group, each of the polyester diol segments having a molecular weight less than about 2000, the molar ratio of polyether diol to polyester diol being in the range of from about 1:9 to about 9:1. The polyurethane is useful as a lamination adhesive in electro-optic displays, and in components used to form such displays.Type: GrantFiled: January 12, 2009Date of Patent: July 26, 2011Assignees: E Ink Corporation, Air Products and Chemicals, Inc.Inventors: Lan Cao, David D. Miller, Richard M. Webber, Shafiq N. Fazel
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Patent number: 7956841Abstract: Novel addressing schemes for controlling electronically addressable displays include a scheme for rear-addressing displays, which allows for in-plane switching of the display material. Other schemes include a rear-addressing scheme which uses a retroreflecting surface to enable greater viewing angle and contrast. Another scheme includes an electrode structure that facilitates manufacture and control of a color display. Another electrode structure facilitates addressing a display using an electrostatic stylus. Methods of using the disclosed electrode structures are also disclosed. Another scheme includes devices combining display materials with silicon transistor addressing structures.Type: GrantFiled: December 21, 2007Date of Patent: June 7, 2011Assignee: E Ink CorporationInventors: Jonathan D. Albert, Barrett Comiskey, Joseph M. Jacobson
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Patent number: 7957053Abstract: An electro-optic display comprises first and second substrates and a lamination adhesive layer and a layer of an electro-optic material disposed between the first and second substrates, the lamination adhesive layer having a thickness of from about 14 to about 25 ?m.Type: GrantFiled: October 26, 2009Date of Patent: June 7, 2011Assignee: E Ink CorporationInventors: Charles Howie Honeyman, Harit Doshi, Seungman Sohn, Eva Chen, Richard D. LeCain, Simon Pang, Gregg M. Duthaler
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Patent number: 7952790Abstract: Ink jet printing can be used in the production of electro-optic displays for (a) forming a layer of a polymer-dispersed electrophoretic medium on a substrate; (b) forming a color electro-optic layer; (c) forming a color filter; and (d) printing electrodes and/or associated conductors on a layer of electro-optic material.Type: GrantFiled: March 21, 2007Date of Patent: May 31, 2011Assignee: E Ink CorporationInventors: Charles Howie Honeyman, Guy M. Danner
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Patent number: 7952557Abstract: Waveforms for driving electro-optic displays, especially bistable electro-optic displays, are modified by one or more of insertion of at least one balanced pulse pair into a base waveform; excision of at least one balanced pulse pair from the base waveform; and insertion of at least one period of zero voltage into the base waveform. Such modifications permit fine control of gray levels.Type: GrantFiled: August 13, 2005Date of Patent: May 31, 2011Assignee: E Ink CorporationInventors: Karl R. Amundson, Robert W. Zehner, Theodore Sjodin
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Patent number: 7947221Abstract: Titania is a semiconductor and photocatalyst that is also chemically inert. With its bandgap of 3.0, to activate the photocatalytic property of titania requires light of about 390 nm wavelength, which is in the ultra-violet, where sunlight is very low in intensity. A method and devices are disclosed wherein stress is induced and managed in a thin film of titania in order to shift and lower the bandgap energy into the longer wavelengths that are more abundant in sunlight. Applications of this stress-induced bandgap-shifted titania photocatalytic surface include photoelectrolysis for production of hydrogen gas from water, photovoltaics for production of electricity, and photocatalysis for detoxification and disinfection.Type: GrantFiled: October 22, 2009Date of Patent: May 24, 2011Inventor: John M. Guerra
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Patent number: 7910175Abstract: A coating of an encapsulated electrophoretic medium is formed on a substrate (106) by dispersing in a fluid (104) a plurality of electrophoretic capsules (102), contacting at least a portion of a substrate (106) with the fluid (104); and applying a potential difference between at least a part of the portion of the substrate (106) contacting the fluid (104) and a counter-electrode (110) in electrical contact with the fluid (104), thereby causing capsules (102) to be deposited upon at least part of the portion of the substrate (106) contacting the fluid (102). Patterned coatings of capsules containing different colors may be deposited in registration with electrodes using multiple capsule deposition steps. Alternatively, patterned coatings of capsules may be formed by applying a fluid form of an electrophoretic medium to a substrate, and applying a temporally varying voltage between an electrode and the substrate. The process may be repeated to allow for deposition of full color displays.Type: GrantFiled: August 3, 2007Date of Patent: March 22, 2011Assignee: E Ink CorporationInventors: Richard M. Webber, Thomas H. Whitesides, Craig A. Herb, Guy M. Danner, Charles Howie Honeyman, Michael D. McCreary, Shamus Ford Patry, Richard J. Paolini, Jr., Michael D. Walls, Stephen P. Dudek