Patents by Inventor Ana L. Lattes
Ana L. Lattes 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).
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Patent number: 11922893Abstract: Improved methods for driving an active matrix of pixel electrodes controlled with thin film transistors when the voltage on a top electrode is being altered between driving frames. The methods described increase performance by providing smaller swings in the overall voltage between the top electrode and pixel electrode while reducing stress on the thin film transistor.Type: GrantFiled: December 12, 2022Date of Patent: March 5, 2024Assignee: E Ink CorporationInventors: Kenneth R. Crounse, Stephen J. Telfer, Ana L. Lattes, Christopher L Hoogeboom, Richard J. Paolini, Jr., Seth J. Bishop
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Patent number: 11747701Abstract: A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.Type: GrantFiled: December 22, 2020Date of Patent: September 5, 2023Assignee: E Ink CorporationInventors: Stephen J. Telfer, Rosa Casado, Sergey Egorov, Erin Criswell Chang, Jay William Anseth, Ana L. Lattes, Lynne A. McCullough
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Publication number: 20230205037Abstract: A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.Type: ApplicationFiled: March 7, 2023Publication date: June 29, 2023Inventors: Stephen J. TELFER, Rosa CASADO, Sergey EGOROV, Erin Criswell CHANG, Jay William ANSETH, Ana L. LATTES, Lynne A. MCCULLOUGH
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Publication number: 20230197024Abstract: A method of driving an electro-optic display including a layer of electro-optic material disposed between a common electrode and a backplane including an array of pixel electrodes, each coupled to a transistor including a source, gate, and drain electrode. The gate electrode is coupled to a gate line, the source electrode is coupled to a scan line, and the drain electrode is coupled to the pixel electrode. A controller provides time-dependent voltages to the gate, scan, and common electrodes, including a common electrode that is the maximum voltage the controller is capable of applying, and a scan line voltage to every pixel that is the maximum voltage the controller is capable of applying. A gate voltage sufficient to activate the pixel transistor to the gate of every pixel transistor is applied, thereby applying voltage potential across the electro-optic material.Type: ApplicationFiled: December 21, 2022Publication date: June 22, 2023Inventors: Kenneth R. CROUNSE, Ana L. LATTES, Teck Ping SIM
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Publication number: 20230197025Abstract: Improved methods for driving an active matrix of pixel electrodes controlled with thin film transistors when the voltage on a top electrode is being altered between driving frames. The methods described increase performance by providing smaller swings in the overall voltage between the top electrode and pixel electrode while reducing stress on the thin film transistor.Type: ApplicationFiled: December 12, 2022Publication date: June 22, 2023Inventors: Kenneth R. CROUNSE, Stephen J. TELFER, Ana L. LATTES, Christopher L. HOOGEBOOM, Richard J. PAOLINI, Jr., Seth J. BISHOP
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Publication number: 20230005439Abstract: An electrophoretic medium comprises a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.Type: ApplicationFiled: August 30, 2022Publication date: January 5, 2023Inventors: Stephen J. TELFER, Stephen BULL, Jennifer M. MORRISON, Luke M. SLOMINSKI, David Darrell MILLER, Olga Vladimirova BARYKINA-TASSA, Christopher L. HOOGEBOOM, Ana L. LATTES, Lee YEZEK, Brandon MACDONALD, Kosta LADAVAC, Craig A. HERB
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Patent number: 11513414Abstract: An electro-optic display having a viewing surface through which a user views the display, a bistable, electrophoretic medium, and at least one electrode arranged to apply an electric field to the electrophoretic medium, the display further comprising at least 10 micromoles per square meter of the viewing surface of at least one compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8, where the compound is a sulfite salt or a salt of titanium (III), vanadium (II), iron (II), cobalt (II) or copper (I), a hydroquinone, a catechol, a dihydropyridine or a metallocene.Type: GrantFiled: December 12, 2019Date of Patent: November 29, 2022Assignee: E Ink CorporationInventors: Stephen J. Telfer, Peter Carsten Bailey Widger, Ana L. Lattes, Dan John Lauber
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Patent number: 11468855Abstract: An electrophoretic medium comprises a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.Type: GrantFiled: April 27, 2020Date of Patent: October 11, 2022Assignee: E Ink CorporationInventors: Stephen J. Telfer, Stephen Bull, Jennifer M. Morrison, Luke M. Slominski, David Darrell Miller, Olga Vladimirova Barykina-Tassa, Christopher L. Hoogeboom, Ana L. Lattes, Lee Yezek, Brandon MacDonald, Kosta Ladavac, Craig A. Herb
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Patent number: 11398196Abstract: A driving method is provided for an electric-optic display having a plurality of display pixels, the method including dividing the plurality of display pixels into multiple groups of pixels, applying at least one waveform structure to the multiple groups of pixels, the at least one waveform structure having a driving section for updating the multiple groups of pixels, and updating the multiple groups of pixels in a contiguous fashion such that only one group of display pixels completes the driving section at any given time.Type: GrantFiled: November 9, 2020Date of Patent: July 26, 2022Assignee: E Ink CorporationInventors: Pierre-Yves Emelie, Ana L. Lattes, Kenneth R. Crounse, Chih-Hsiang Ho
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Patent number: 11195481Abstract: An electrophoretic display comprising a fluid including a first species of particles and a charge control agent disposed between first and second electrodes. When a first addressing impulse have an electrical polarity is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but having the same electrical polarity, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.Type: GrantFiled: September 27, 2019Date of Patent: December 7, 2021Assignee: E Ink CorporationInventors: Stephen J. Telfer, Stephen Bull, Alain Bouchard, Craig A. Herb, Kosta Ladavac, Ana L. Lattes, Jennifer M. Morrison, Richard J. Paolini, Jr., Michael Thomas Regan, Luke M. Slominski, Lee Yezek, Kenneth R. Crounse, J. Ryan Kruse, Christopher L. Hoogeboom, Jason D. Feick, David Darrell Miller
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Patent number: 11086186Abstract: Variable transmission covering systems that can be used, for example, to control the amount of light passing through a window in a building. Using transmissive electrophoretic media that can switch between a first and second optical state, the invention can be used to change the color and/or transmissivity of a structure (or structures) that is placed in front of an object. In some embodiments, the variable transmission system can change transmission and color on command.Type: GrantFiled: May 7, 2019Date of Patent: August 10, 2021Assignee: E Ink CorporationInventors: Ana L. Lattes, Stephen J. Telfer
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Publication number: 20210210026Abstract: An electrophoretic display comprising a fluid including a first species of particles and a charge control agent disposed between first and second electrodes. When a first addressing impulse have an electrical polarity is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but having the same electrical polarity, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.Type: ApplicationFiled: March 25, 2021Publication date: July 8, 2021Inventors: Stephen J. TELFER, Stephen BULL, Alain BOUCHARD, Craig A. HERB, Kosta LADAVAC, Ana L. LATTES, Jennifer M. MORRISON, Richard J. PAOLINI, JR., Michael Thomas REGAN, Luke M. SLOMINSKI, Lee YEZEK, Kenneth R. CROUNSE, J. Ryan KRUSE, Christopher L. HOOGEBOOM, Jason D. FEICK, David D. MILLER
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Publication number: 20210191226Abstract: A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.Type: ApplicationFiled: December 22, 2020Publication date: June 24, 2021Inventors: Stephen J. TELFER, Rosa CASADO, Sergey EGOROV, Erin Criswell CHANG, Jay William ANSETH, Ana L. LATTES, Lynne A. MCCULLOUGH
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Publication number: 20210056916Abstract: A driving method is provided for an electric-optic display having a plurality of display pixels, the method including dividing the plurality of display pixels into multiple groups of pixels, applying at least one waveform structure to the multiple groups of pixels, the at least one waveform structure having a driving section for updating the multiple groups of pixels, and updating the multiple groups of pixels in a contiguous fashion such that only one group of display pixels completes the driving section at any given time.Type: ApplicationFiled: November 9, 2020Publication date: February 25, 2021Inventors: Pierre-Yves EMELIE, Ana L. LATTES, Kenneth R. CROUNSE, Chih-Hsiang HO
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Patent number: 10832622Abstract: A driving method is provided for an electric-optic display having a plurality of display pixels, the method including dividing the plurality of display pixels into multiple groups of pixels, applying at least one waveform structure to the multiple groups of pixels, the at least one waveform structure having a driving section for updating the multiple groups of pixels, and updating the multiple groups of pixels in a contiguous fashion such that only one group of display pixels completes the driving section at any given time.Type: GrantFiled: April 4, 2018Date of Patent: November 10, 2020Assignee: E Ink CorporationInventors: Pierre-Yves Emelie, Ana L. Lattes, Kenneth R. Crounse, Chih-Hsiang Ho
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Publication number: 20200264488Abstract: An electrophoretic medium comprises a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.Type: ApplicationFiled: April 27, 2020Publication date: August 20, 2020Inventors: Stephen J. TELFER, Stephen BULL, Jennifer M. MORRISON, Luke M. SLOMINSKI, David Darrell MILLER, Olga Vladimirova BARYKINA-TASSA, Christopher L. HOOGEBOOM, Ana L. LATTES, Lee YEZEK, Brandon MACDONALD, Kosta LADAVAC, Craig A. HERB
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Patent number: 10678111Abstract: An electrophoretic medium comprises a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.Type: GrantFiled: December 26, 2017Date of Patent: June 9, 2020Assignee: E Ink CorporationInventors: Stephen J. Telfer, Stephen Bull, Jennifer M. Morrison, Luke M. Slominski, David Darrell Miller, Olga Vladimirova Barykina-Tassa, Christopher L. Hoogeboom, Ana L. Lattes, Lee Yezek, Brandon MacDonald, Kosta Ladavac, Craig A. Herb
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Publication number: 20200117069Abstract: An electro-optic display having a viewing surface through which a user views the display, a bistable, non-electrochromic electro-optic medium, and at least one electrode arranged to apply an electric field to the electro-optic medium, the display further comprising at least 10 micromoles per square meter of the viewing surface of at least one compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8, where the compoundType: ApplicationFiled: December 12, 2019Publication date: April 16, 2020Inventors: Stephen J. TELFER, Peter Carsten Bailey WIDGER, Ana L. LATTES, Dan John LAUBER
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Publication number: 20200035171Abstract: An electrophoretic display comprising a fluid including a first species of particles and a charge control agent disposed between first and second electrodes. When a first addressing impulse have an electrical polarity is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but having the same electrical polarity, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.Type: ApplicationFiled: September 27, 2019Publication date: January 30, 2020Inventors: Stephen J. TELFER, Stephen BULL, Alain BOUCHARD, Craig A. HERB, Kosta LADAVAC, Ana L. LATTES, Jennifer M. MORRISON, Richard J. PAOLINI, JR., Michael Thomas REGAN, Luke M. SLOMINSKI, Lee YEZEK, Kenneth R. CROUNSE, J. Ryan KRUSE, Christopher L. HOOGEBOOM, Jason D. FEICK, David Darrell MILLER
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Patent number: 10520786Abstract: An electro-optic display having a viewing surface through which a user views the display, a bistable, non-electrochromic electro-optic medium, and at least one electrode arranged to apply an electric field to the electro-optic medium, the display further comprising at least 10 micromoles per square meter of the viewing surface of at least one compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8, where the compound having the oxidation potential comprises one or more compounds of Formulae I below: where in Formulae I, R1-R4 may be substituted or unsubstituted alkyl or aryl groups, or heteroatomic groups containing hetero atoms of Groups V-VII of the periodic table, and substituents R1 and R2 (taken together), and/or R3 and R4, may form a ring.Type: GrantFiled: June 30, 2017Date of Patent: December 31, 2019Assignee: E Ink CorporationInventors: Stephen J. Telfer, Peter Carsten Bailey Widger, Ana L. Lattes, Dan John Lauber