Patents by Inventor Umberto Rossini

Umberto Rossini 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: 11430373
    Abstract: A display device includes a support and first and second conductive electrical power supply elements, the first conductive element being arranged on the support. The display device also includes LED modules, each including at least one LED and two electrical power supply pads that are arranged on two opposite faces, respectively, of the LED module, one of which corresponds to an emissive face of the LED. The electrical power supply pads of each LED module are connected to the first and second conductive electrical power supply elements, respectively, and the connection area of an electrical power supply pad of an LED module for connection with the first conductive electrical power supply element is smaller than a receiving area of the first conductive element corresponding to the area of the first conductive element in a parallel plane to the connection areas of the power supply pads of the LED modules.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: August 30, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Ivan-Christophe Robin, Bertrand Dupont, Stephane Caplet, Emeric De Foucauld, Umberto Rossini, Alexei Tchelnokov, Francois Templier
  • Patent number: 11373978
    Abstract: The invention concerns a display device including a transfer substrate (1010) including electric connection elements (L1, L2, C1, C2, P1, P2, P3, P4), and a plurality of semiconductor chips, wherein the transfer substrate (1010) includes an insulating plate, the electric connection elements of the substrate being formed by printing, on a surface of said plate, of a first conductive level, followed by an insulating level, followed by a second conductive level, the electric connection elements of the substrate including: a plurality of first conductive tracks (L1, L2) formed in the first conductive level; a plurality of second conductive tracks (C1, C2) formed in the second conductive level; and for each chip of the device, a plurality of electric connection areas (P1, P2, P3, P4) respectively connected to connection terminals of the chip, said areas being all formed in the second conductive level.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: June 28, 2022
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventor: Umberto Rossini
  • Patent number: 11302677
    Abstract: A method of manufacturing an LED display device, including the successive steps of: a) transferring, onto a planar surface of a support plate made of a transparent material having its other surface structured and defining a plurality of microlenses, a plurality of semiconductor chips, each including at least one LED; and b) forming a network of conductive interconnection tracks contacting the chips by their surface opposite to the support plate.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: April 12, 2022
    Assignee: Commissariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Ivan-Christophe Robin, Stéphane Caplet, Umberto Rossini
  • Patent number: 11158240
    Abstract: The invention concerns an emissive display device including: a transfer substrate including electric connection elements; and a plurality of semiconductor chips (310) fastened to the substrate and connected to the electric connection elements of the substrate for the control thereof, each chip including: a plurality of LEDs (120r, 120g, 120b); a first terminal (Vdata) of connection to the substrate intended to receive, for each LED of the chip, an individual signal (Vdatar, Vdatag, Vdatab) for setting the LED, the individual signals for setting the different LEDs of the chip being temporally multiplexed on said first terminal (Vdata); and a control circuit capable of demultiplexing the signals received on said first terminal and of applying to each LED of the chip a bias signal which is a function of the individual LED setting signal received on said first terminal (Vdata).
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: October 26, 2021
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Umberto Rossini, Denis Sarrasin
  • Publication number: 20210142716
    Abstract: A display device includes a support and first and second conductive electrical power supply elements, the first conductive element being arranged on the support. The display device also includes LED modules, each including at least one LED and two electrical power supply pads that are arranged on two opposite faces, respectively, of the LED module, one of which corresponds to an emissive face of the LED. The electrical power supply pads of each LED module are connected to the first and second conductive electrical power supply elements, respectively, and the connection area of an electrical power supply pad of an LED module for connection with the first conductive electrical power supply element is smaller than a receiving area of the first conductive element corresponding to the area of the first conductive element in a parallel plane to the connection areas of the power supply pads of the LED modules.
    Type: Application
    Filed: July 3, 2018
    Publication date: May 13, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Ivan-Christophe ROBIN, Bertrand DUPONT, Stephane CAPLET, Emeric DE FOUCAULD, Umberto ROSSINI, Alexei TCHELNOKOV, Francois TEMPLIER
  • Publication number: 20210111157
    Abstract: The invention concerns a display device including a transfer substrate (1010) including electric connection elements (L1, L2, C1, C2, P1, P2, P3, P4), and a plurality of semiconductor chips, wherein the transfer substrate (1010) includes an insulating plate, the electric connection elements of the substrate being formed by printing, on a surface of said plate, of a first conductive level, followed by an insulating level, followed by a second conductive level, the electric connection elements of the substrate including: a plurality of first conductive tracks (L1, L2) formed in the first conductive level; a plurality of second conductive tracks (C1, C2) formed in the second conductive level; and for each chip of the device, a plurality of electric connection areas (P1, P2, P3, P4) respectively connected to connection terminals of the chip, said areas being all formed in the second conductive level.
    Type: Application
    Filed: April 4, 2018
    Publication date: April 15, 2021
    Inventor: Umberto ROSSINI
  • Publication number: 20210110758
    Abstract: The invention concerns an emissive display device including: a transfer substrate including electric connection elements; and a plurality of semiconductor chips (310) fastened to the substrate and connected to the electric connection elements of the substrate for the control thereof, each chip including: a plurality of LEDs (120r, 120g, 120b); a first terminal (Vdata) of connection to the substrate intended to receive, for each LED of the chip, an individual signal (Vdatar, Vdatag, Vdatab) for setting the LED, the individual signals for setting the different LEDs of the chip being temporally multiplexed on said first terminal (Vdata); and a control circuit capable of demultiplexing the signals received on said first terminal and of applying to each LED of the chip a bias signal which is a function of the individual LED setting signal received on said first terminal (Vdata).
    Type: Application
    Filed: April 4, 2018
    Publication date: April 15, 2021
    Inventors: Umberto ROSSINI, Denis SARRASIN
  • Publication number: 20200194408
    Abstract: A method of manufacturing an LED display device, including the successive steps of: a) transferring, onto a planar surface of a support plate made of a transparent material having its other surface structured and defining a plurality of microlenses, a plurality of semiconductor chips, each including at least one LED; and b) forming a network of conductive interconnection tracks contacting the chips by their surface opposite to the support plate.
    Type: Application
    Filed: September 3, 2018
    Publication date: June 18, 2020
    Applicant: Commissariat à I'Énergie Atomique et aux Énergies Alternatives
    Inventors: Ivan-Christophe Robin, Stéphane Caplet, Umberto Rossini
  • Patent number: 10585280
    Abstract: The invention relates to a method of manufacturing a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: March 10, 2020
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVE
    Inventors: Christophe Martinez, Umberto Rossini
  • Patent number: 10371764
    Abstract: An optical pumping and isotropic measurement magnetometer. The magnetometer is all-optical in the sense that resonance between Zeeman sub-levels is induced by modulating the intensity or the frequency of the pump beam. Resonance is detected either using the pump beam itself or an unmodulated probe beam. The pump beam is linearly polarised and its polarisation direction is kept constant relative to the direction of the magnetic field to be measured, so that a measurement independent of the orientation of the field can be made.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: August 6, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Sophie Morales, Mathieu Baicry, Francois Bertrand, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
  • Patent number: 10247942
    Abstract: An optical device comprises a transparent plate the first surface of which is reflective; a first partially reflective and partially transmissive layer covering a second surface of the transparent plate opposite the first surface, and a second layer covering the surface of the first layer opposite the transparent plate, wherein the second layer is made of a material having an optical index which differs from the optical index of the transparent plate by less than 10% and preferably by less than 5%, and the second layer comprises, on the surface thereof opposite the first layer, structures forming a diffraction grating suitable for promoting the extraction of light towards the outside of the transparent plate.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: April 2, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Umberto Rossini
  • Publication number: 20180239135
    Abstract: The invention relates to a method of manufacturing a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Inventors: Christophe MARTINEZ, Umberto ROSSINI
  • Patent number: 9989841
    Abstract: The present invention involves a rear projection display screen, including at least one assembly including: a film having a surface facing the back of the screen including ridges defining prisms; and an element of controllable refraction index, coating the ridged surface of said film.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: June 5, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Umberto Rossini
  • Patent number: 9977240
    Abstract: The invention relates to a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: May 22, 2018
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Christophe Martinez, Umberto Rossini
  • Patent number: 9910277
    Abstract: The invention concerns a head-up display, comprising at least one combination of a laser source, a movable mirror, a fixed mirror, a diffuser and an optical sub-system, the movable mirror being positioned to divert the beam originating from the laser source towards the fixed mirror in such a way that the beam from the fixed mirror scans the surface of the diffuser before reaching the optical sub-system.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: March 6, 2018
    Assignee: Commissariat a l'Energie Atomique at aux Energies Alternatives
    Inventors: Umberto Rossini, Stéphane Getin
  • Patent number: 9829705
    Abstract: A head-up display including a display screen including an array of display pixels arranged in rows and in columns, where the display screen is pivoted, around an axis perpendicular to the screen, by an inclination angle between 10 and 80 degrees, with respect to the position of the display screen for which a group of adjacent activated display pixels of a same row appears to an observer as being directed along the horizontal or vertical direction.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: November 28, 2017
    Assignee: Commissariat À L'Énergie Atomique et aux Énergies Alternatives
    Inventors: Umberto Rossini, Henri Doyeux, Denis Sarrasin
  • Patent number: 9804482
    Abstract: A rear-projection display device comprises a mobile light source supplying a light beam of at least one wavelength, a holographic mirror reflecting only said at least one wavelength, an absorbent screen and a transmissive diffuser, the absorbent screen being placed on the rear face of the holographic mirror, the elements being arranged such that the beam from the light source is reflected on the holographic mirror in order to sweep the surface of the transmissive diffuser.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: October 31, 2017
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, RENAULT S.A.S.
    Inventors: Umberto Rossini, Stéphane Getin, Martin Pertenais, Frédéric Sermet, Stéphane Regnier
  • Patent number: 9709642
    Abstract: A magnetic resonance optical pumping isotropic magnetometer including a laser, a gas filled cell, a HF discharge circuit, RF magnetic field generating coils surrounding the cell, a first frequency regulating mechanism of an RF generator, a second polarization regulating mechanism of the laser beam, and a third regulating mechanism of the direction of the RF magnetic field. The direction of polarization of the laser beam at an inlet of the cell is orthogonally aligned with the magnetic field to be measured by virtue of a liquid crystal polarization rotator. The magnetometer is well-adapted to an integrated arrangement.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: July 18, 2017
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Sophie Morales, Laurence Clerc, William Fourcault, Matthieu Le Prado, Jean-Michel Leger, Umberto Rossini, Jaroslaw Rutkowski
  • Patent number: 9703137
    Abstract: The present invention involves a rear projection display screen, including: a transmissive diffuser; a liquid crystal layer arranged on the rear surface side of the diffuser; and on the side of a first surface of said layer, first and second alternated parallel conductive strips regularly distributed across the entire surface of the screen, the first strips being interconnected, and the second strips being interconnected without being connected to the first strips.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: July 11, 2017
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventor: Umberto Rossini
  • Patent number: 9634448
    Abstract: In the field of active matrix liquid crystal displays and, more particularly, to microdisplays produced using collective fabrication technologies, a matrix comprises, for each pixel, a transparent electrode and opaque regions resulting from the presence in the pixel of at least one row conductor, one column conductor, and one control transistor for the pixel connected to the electrode of the pixel. The pixel comprises at least three possible geometrical configurations, the position of the transistor with respect to the rows and to the columns being different in the various configurations, the various configurations being distributed in a pseudo-random manner within at least one region of the matrix.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 25, 2017
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Umberto Rossini