Commissariat a L'energie Atomique Et Aux Energies Alternatives

Thales

Stmicroelectronics S.a.

Renault S.a.s.

Essilor International (Compagnie Generale D'optique)

Commissariat a L'energie Atomique Et Aux Energies

Essilor International

Umberto Rossini

Sophie Morales

Thierry Flahaut

Ivan-Christophe Robin

Jean-Michel Leger

Christophe Martinez

Stéphane Caplet

Matthieu Le Prado

Denis Sarrasin

Stéphane Getin

Henri Doyeux

Laurence Clerc

Jaroslaw Rutkowski

Michel Marty

François Templier

Bruno Mourey

Alexei Tchelnokov

Vincent Larrey

Josep Segura Puchades

Emeric De Foucauld

Flavien Hirigoyen

Bertrand Dupont

Anthony Saugey

Bernard Aventurier

William Fourcault

Francois Bertrand

Mathieu Baicry

François Bertrand

Frédéric Sermet

Stéphanie Le Calvez

Hélène Wehbe-Alause

Maxime Favier

Martin Pertenais

Stéphane Regnier

Eva Serres

Raphaël Eleouet

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.

LED display device

The invention concerns a display device including a transfer substrate () including electric connection elements (L, L, C, C, P, P, P, P), and a plurality of semiconductor chips, wherein the transfer substrate () 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 (L, L) formed in the first conductive level; a plurality of second conductive tracks (C, C) formed in the second conductive level; and for each chip of the device, a plurality of electric connection areas (P, P, P, P) respectively connected to connection terminals of the chip, said areas being all formed in the second conductive level.

Semiconductor chip having a plurality of LED for image display

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.

Process for manufacturing an LED-based emissive display device

The invention concerns an emissive display device including: a transfer substrate including electric connection elements; and a plurality of semiconductor chips () 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 (); 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).

LED emissive image display device

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.

Method of manufacturing a screen comprising transparent portions and retroreflective portions

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.

All-optical and isotropic magnetometer

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.

Device for extending the exit pupil and head up display comprising said device

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.

Rear projection display screen and device

The invention relates to a screen comprising transparent portions and retroreflective portions distributed over all or part of the surface thereof.

System for displaying an image on a windshield

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.

Head-up display

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.

Head-up display providing an improved viewing comfort

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.

Rear-projection display device

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.

Isotropic and integrated optical pumping magnetometer

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.

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.

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Coublevie, France

Umberto Rossini