Patents by Inventor Cristina Visani
Cristina Visani 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: 11921394Abstract: Layered dielectric materials for use in controlling dielectric strength in microelectronic devices, especially as they relate to electrophoretic and electrowetting applications. Specifically, a combination of a first atomic layer deposition (ALD) step, a sputtering step, and a second ALD step result in a layer that is chemically robust and nearly pinhole free. The dielectric layer may be disposed on the transparent common electrode of an electrophoretic display or covering the pixelated backplane electrodes, or both.Type: GrantFiled: August 15, 2022Date of Patent: March 5, 2024Assignee: Nuclera LTDInventor: Cristina Visani
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Publication number: 20230372939Abstract: A method for moving an aqueous droplet comprising providing an electrokinetic device including a first substrate having a matrix of electrodes, wherein each of the matrix electrodes is coupled to a thin film transistor, and wherein the matrix electrodes are overcoated with a functional coating comprising: a dielectric layer in contact with the matrix electrodes, a conformal layer in contact with the dielectric layer, and a hydrophobic layer in contact with the conformal layer; a second substrate comprising a top electrode; a spacer disposed between the first substrate and the second substrate and defining an electrokinetic workspace; and a voltage source operatively coupled to the matrix electrodes. The method further comprises disposing an aqueous droplet on a first matrix electrode; and providing a differential electrical potential between the first matrix electrode and a second matrix electrode with the voltage source, thereby moving the aqueous droplet.Type: ApplicationFiled: April 14, 2021Publication date: November 23, 2023Inventors: Michael Chun Hao Chen, Sumit Kalsi, Laurence Livingstone Bell, Gordon Ross McInroy, David Zhitomirsky, Luke M Slominski, RicK J Paolini, JR., Cristina Visani
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Patent number: 11806715Abstract: A method for moving an aqueous droplet comprising providing an electrokinetic device including a first substrate having a matrix of electrodes, wherein each of the matrix electrodes is coupled to a thin film transistor, and wherein the matrix electrodes are overcoated with a functional coating comprising: a dielectric layer in contact with the matrix electrodes, a conformal layer in contact with the dielectric layer, and a hydrophobic layer in contact with the confornial layer; a second substrate comprising a top electrode; a spacer disposed between the first substrate and the second substrate and defining an electrokinetic workspace; and a voltage source operatively coupled to the niatrix electrodes. The method further comprises disposing an aqueous droplet on a first matrix electrode; and providing a differential electrical potential between the first matrix electrode and a second matrix electrode with the voltage source, thereby moving the aqueous droplet.Type: GrantFiled: October 13, 2022Date of Patent: November 7, 2023Assignee: Nuclera LtdInventors: Michael Chun Hao Chen, Sumit Kalsi, Laurence Livingstone Bell, Gordon Ross McInroy, David Zhitomirsky, Luke M. Slominski, Richard J. Paolini, Jr., Cristina Visani
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Patent number: 11801510Abstract: An electrowetting system is disclosed. The system includes electrodes configured to manipulate droplets of fluid in a microfluidic space. Each electrode is coupled to circuitry operative to selectively apply a driving voltage to the electrode. The system includes a dielectric stack including a first dielectric pair comprising a first layer having a first dielectric constant and a second layer having a second dielectric constant. The second dielectric constant is larger than the first dielectric constant. The dielectric stack includes a second dielectric pair comprising a third layer having a third dielectric constant and a fourth layer having a fourth dielectric constant. The fourth dielectric constant is larger than the third dielectric constant. A ratio of a thickness of the fourth layer to a thickness of the third layer (T4:T3) is in the range from about 2:1 to about 8:1. The second dielectric pair is thinner than the first dielectric pair.Type: GrantFiled: December 16, 2022Date of Patent: October 31, 2023Assignee: Nuclera LtdInventors: Cristina Visani, Richard J. Paolini, Jr.
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Publication number: 20230288772Abstract: An electrophoretic display includes an electrophoretic medium having a non-polar fluid and two sets of charged pigment particles dispersed in the non-polar fluid and movable through the non-polar fluid under influence of an electric field. The two sets of charged pigment particles have different optical characteristics from each other. The display also includes a light-transmissive electrode on one side of the electrophoretic medium, a rear electrode on an opposite side of the electrophoretic medium, and a dielectric layer having a dielectric constant greater than 5 between the electrophoretic medium and the light-transmissive electrode or between the electrophoretic medium and the rear electrode configured to reduce electrode electrochemical degradation and buildup of remnant voltages in the display.Type: ApplicationFiled: April 27, 2023Publication date: September 14, 2023Inventors: Cristina VISANI, Stephen J. TELFER, Kosta LADAVAC, Kenneth R. CROUNSE, Timothy J. O'MALLEY, Teck Ping SIM
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Patent number: 11675244Abstract: Layered dielectric materials for use in controlling dielectric strength in microelectronic devices, especially as they relate to electrophoretic and electrowetting applications. Specifically, a combination of a first atomic layer deposition (ALD) step, a sputtering step, and a second ALD step result in a layer that is chemically robust and nearly pinhole free. The dielectric layer may be disposed on the transparent common electrode of an electrophoretic display or covering the pixelated backplane electrodes, or both.Type: GrantFiled: April 30, 2020Date of Patent: June 13, 2023Assignee: E Ink CorporationInventors: Cristina Visani, Stephen J. Telfer, Kosta Ladavac, Kenneth R. Crounse, Timothy J. O'Malley, Teck Ping Sim
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Publication number: 20230128171Abstract: An electrowetting system is disclosed. The system includes electrodes configured to manipulate droplets of fluid in a microfluidic space. Each electrode is coupled to circuitry operative to selectively apply a driving voltage to the electrode. The system includes a dielectric stack including a first dielectric pair comprising a first layer having a first dielectric constant and a second layer having a second dielectric constant. The second dielectric constant is larger than the first dielectric constant. The dielectric stack includes a second dielectric pair comprising a third layer having a third dielectric constant and a fourth layer having a fourth dielectric constant. The fourth dielectric constant is larger than the third dielectric constant. A ratio of a thickness of the fourth layer to a thickness of the third layer (T4:T3) is in the range from about 2:1 to about 8:1. The second dielectric pair is thinner than the first dielectric pair.Type: ApplicationFiled: December 16, 2022Publication date: April 27, 2023Inventors: Cristina Visani, Richard J. Paolini, JR.
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Publication number: 20230057330Abstract: A method for moving an aqueous droplet comprising providing an electrokinetic device including a first substrate having a matrix of electrodes, wherein each of the matrix electrodes is coupled to a thin film transistor, and wherein the matrix electrodes are overcoated with a functional coating comprising: a dielectric layer in contact with the matrix electrodes, a conformal layer in contact with the dielectric layer, and a hydrophobic layer in contact with the confornial layer; a second substrate comprising a top electrode; a spacer disposed between the first substrate and the second substrate and defining an electrokinetic workspace; and a voltage source operatively coupled to the niatrix electrodes. The method further comprises disposing an aqueous droplet on a first matrix electrode; and providing a differential electrical potential between the first matrix electrode and a second matrix electrode with the voltage source, thereby moving the aqueous droplet.Type: ApplicationFiled: October 13, 2022Publication date: February 23, 2023Inventors: Michael Chun Hao Chen, Sumit Kalsi, Laurence Livingstone Bell, Gordon Ross McInroy, David Zhitomirsky, Luke Slominski, Rick Paolini, JR., Cristina Visani
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Patent number: 11554374Abstract: A digital microfluidic device including an active matrix of propulsion electrodes controlled by thin-film-transistors. The device includes at least two areas of different propulsion electrode densities. One area may be driven by directly-driving the propulsion electrodes from a power supply or function generator. In the first, higher density region; a first dielectric layer covers the propulsion electrodes. The first dielectric layer has a first dielectric constant and a first thickness. In the second, lower density region, a second dielectric layer has a second dielectric constant and a second thickness covering the propulsion electrodes.Type: GrantFiled: January 15, 2021Date of Patent: January 17, 2023Assignee: Nuclera Nucleics Ltd.Inventors: David Zhitomirsky, Cristina Visani
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Publication number: 20220390806Abstract: Layered dielectric materials for use in controlling dielectric strength in microelectronic devices, especially as they relate to electrophoretic and electrowetting applications. Specifically, a combination of a first atomic layer deposition (ALD) step, a sputtering step, and a second ALD step result in a layer that is chemically robust and nearly pinhole free. The dielectric layer may be disposed on the transparent common electrode of an electrophoretic display or covering the pixelated backplane electrodes, or both.Type: ApplicationFiled: August 15, 2022Publication date: December 8, 2022Inventor: Cristina VISANI
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Patent number: 11353759Abstract: Active matrix backplanes including an array of hexagonal electrodes or an array of triangular electrodes. Because the backplane designs route the gate lines along the periphery of the electrodes there is less cross talk with the surface of the electrode. The disclosed designs simplify construction and control of the electrodes and improve the regularity of the electric field above the electrode. Such backplane electrode designs may be particularly useful in electrowetting on dielectric (EWoD) devices and electrophoretic displays (EPD).Type: GrantFiled: September 16, 2019Date of Patent: June 7, 2022Assignee: Nuclera Nucleics Ltd.Inventors: Annie Tsai, Ian French, Cristina Visani, David Zhitomirsky, Richard J. Paolini, Jr.
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Publication number: 20220134344Abstract: An electrowetting system is disclosed. The system includes electrodes configured to manipulate droplets of fluid in a microfluidic space. Each electrode is coupled to circuitry operative to selectively apply a driving voltage to the electrode. The system includes a dielectric stack including a first dielectric pair comprising a first layer having a first dielectric constant and a second layer having a second dielectric constant. The second dielectric constant is larger than the first dielectric constant. The dielectric stack includes a second dielectric pair comprising a third layer having a third dielectric constant and a fourth layer having a fourth dielectric constant. The fourth dielectric constant is larger than the third dielectric constant. A ratio of a thickness of the fourth layer to a thickness of the third layer (T4:T3) is in the range from about 2:1 to about 8:1. The second dielectric pair is thinner than the first dielectric pair.Type: ApplicationFiled: November 4, 2021Publication date: May 5, 2022Inventors: Cristina Visani, Richard J. Paolini, JR.
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Publication number: 20210220830Abstract: A digital microfluidic device including an active matrix of propulsion electrodes controlled by thin-film-transistors. The device includes at least two areas of different propulsion electrode densities. One area may be driven by directly-driving the propulsion electrodes from a power supply or function generator. In the first, higher density region; a first dielectric layer covers the propulsion electrodes. The first dielectric layer has a first dielectric constant and a first thickness. In the second, lower density region, a second dielectric layer has a second dielectric constant and a second thickness covering the propulsion electrodes.Type: ApplicationFiled: January 15, 2021Publication date: July 22, 2021Inventors: David ZHITOMIRSKY, Cristina VISANI
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Publication number: 20200348576Abstract: Layered dielectric materials for use in controlling dielectric strength in microelectronic devices, especially as they relate to electrophoretic and electrowetting applications. Specifically, a combination of a first atomic layer deposition (ALD) step, a sputtering step, and a second ALD step result in a layer that is chemically robust and nearly pinhole free. The dielectric layer may be disposed on the transparent common electrode of an electrophoretic display or covering the pixelated backplane electrodes, or both.Type: ApplicationFiled: April 30, 2020Publication date: November 5, 2020Inventors: Cristina VISANI, Stephen J. TELFER, Kosta LADAVAC, Kenneth R. CROUNSE, Timothy J. O'MALLEY, Teck Ping SIM
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Publication number: 20200089035Abstract: Active matrix backplanes including an array of hexagonal electrodes or an array of triangular electrodes. Because the backplane designs route the gate lines along the periphery of the electrodes there is less cross talk with the surface of the electrode. The disclosed designs simplify construction and control of the electrodes and improve the regularity of the electric field above the electrode. Such backplane electrode designs may be particularly useful in electrowetting on dielectric (EWoD) devices and electrophoretic displays (EPD).Type: ApplicationFiled: September 16, 2019Publication date: March 19, 2020Inventors: Annie Tsai, Ian French, Cristina Visani, David Zhitomirsky, Richard J. Paolini, JR.