Abstract: An unpolarized light beam phase modulator emitting in a given wavelength range comprises at least one cell containing a liquid crystal having a helical structure and means for applying a voltage to said cell, said liquid crystal having a torsion elastic constant greater than its twisting elastic constant so as to ensure continuous stable behavior voltage-wise, said liquid crystal having a sufficient number of turns and in which the axis of the turns is in the light-propagation direction, making it possible to obtain an optical effect generated by the liquid crystal on the electrical field that is identical regardless of the direction of this electrical field, said cell being transparent in said wavelength range.

Abstract: An electrode of a light-emitting device of the OLED type adapted for forming with a second electrode, an optical cavity, including at least one layer based on a material of refraction index n1 including a structured face comprising a plurality of recesses filled with a material of refractive index n2 different from n1.

Abstract: A wheel includes a tire, an electrical device requiring power for operation, and a conversion system for providing electrical energy for powering the electrical device. The electrical energy is obtained from conversion of a difference between pressure of a gas confined under pressure within the tire and ambient pressure of air outside the tire. The conversion system includes an inlet nozzle fluidly connected to the gas confined under pressure in the tire, an outlet nozzle fluidly connected to the air outside the tire, a movable arm configured to be moved by gas expanding while flowing from the inlet nozzle to the outlet nozzle, and an electromechanical transducer capable of converting mechanical energy from movement of the arm into electrical energy used to power the electrical device.

Abstract: An unpolarized light beam phase modulator emitting in a given wavelength range comprises at least one cell containing a liquid crystal having a helical structure and means for applying a voltage to said cell, said liquid crystal having a torsion elastic constant greater than its twisting elastic constant so as to ensure continuous stable behavior voltage-wise, said liquid crystal having a sufficient number of turns and in which the axis of the turns is in the light-propagation direction, making it possible to obtain an optical effect generated by the liquid crystal on the electrical field that is identical regardless of the direction of this electrical field, said cell being transparent in said wavelength range.

Abstract: The method relates to production of a set of chips mechanically interconnected by means of a flexible connection. The chips, integrated on a substrate, each comprise a receiving area. The chips of the set are connected in series in the receiving areas by a connecting element. The chips are then released, the connecting element forming a flexible connection.

Abstract: A method for fabricating a device provided with one or more cavities filled with at least one liquid, comprising the steps of: (a) forming one or more microcavities on a support separated from each other by one or more walls, and filled with at least one given porous material; (b) filling, in at least one cavity filled with said porous material, by means of at least one given functional liquid; and (c) forming a sealing layer enabling said cavities to be sealed.

Abstract: This wheel is equipped with a tyre and an electric device (100), which needs to be supplied with power in order to operate. The device comprises a system (200) for converting the difference in pressure between the pressurized gas inside the tyre and the free air outside the tyre into electric power used for supplying the electric device.

Abstract: A microelectronic chip comprises two parallel main faces and side faces. At least one of the faces comprises a recess provided with at least one electrical connection element and forming a housing for a wire element. The wire element simultaneously constitutes both an electrical connection between the chip and the outside via said connection element and a flexible mechanical support for said chip.

Abstract: The method enables an assembly of chips, initially formed on a wafer, to be formed. Each chip comprises two parallel main faces joined by side faces. At least one of the side faces comprises at least one groove for housing a thread element. The wafer is first of all stuck onto a flexible film and the chips are then cut. The film is then deformed to space the chips apart from one another and to make the grooves accessible. A daisy chain is then formed joining the chips via at least one thread element, each chip being inserted in the daisy chain by inserting the thread in the groove of said chip and then removing the chip from the deformable film.

Abstract: A display device includes color filters and electronically aligned photo-emissive elements. The display device is achieved with a matrix of pixels. Each pixel includes a plurality of sub-pixels that are organized within the pixel in one or two directions. Each sub-pixel includes a color filter arranged facing a plurality of photo-emissive elements, an opaque area separating the color filters. In each of the organization directions of the pixel, the photo-emissive elements have a repetition pitch that is two times smaller than the pitch of the color filters. The size of each color filter is smaller than or equal to the size of the photo-emissive element in the organization direction. The display device includes a supply control circuit of the photo-emissive elements that selects the photo-emissive elements situated facing the color filter of each pixel.

Abstract: This overhead projector comprises: a screen (4) equipped with a frame and a translucent panel tautened on this frame, the translucent panel having a front face (20) on which the images are displayed and a rear face (8) on which the images are projected, the screen (4) being capable of being shifted between a retracted position and a stretched position in which the surface area of the panel is increased by at least 10% relatively to the surface area of the panel in its retracted position an apparatus (5) for projecting images on the rear face of the translucent panel this apparatus (5) being capable of adapting the size of the projected images to the retracted position as well as to the stretched position of the screen.

Abstract: The light-emitting device includes a base substrate and preferably three light-emitting diodes respectively associated with three primary colors and emitting a part of their signal in the direction of the base substrate. The device includes three chromatic photodetectors formed in the base substrate constituting a semiconducting substrate, and each arranged under an associated light-emitting diode. Each chromatic photodetector includes superposed first, second and third layers. The first layer and third layer have a first type of conductivity and the second layer has a second type of conductivity. The device includes a control component connected to the chromatic photodetectors and to the light-emitting diodes to control the global color of the light emitted by the device.

Abstract: An electrode of a light-emitting device of the OLED type adapted for forming with a second electrode, an optical cavity, including at least one layer based on a material of refraction index n1 including a structured face comprising a plurality of recesses filled with a material of refractive index n2 different from n1.

Abstract: A method for fabricating a device provided with one or more cavities filled with at least one liquid, comprising the steps of : (a) forming one or more microcavities on a support separated from each other by one or more walls, and filled with at least one given porous material; (b) filling, in at least one cavity filled with said porous material, by means of at least one given functional liquid; and (c) forming a sealing layer enabling said cavities to be sealed.

Abstract: The method relates to production of a set of chips mechanically interconnected by means of a flexible connection. The chips, integrated on a substrate, each comprise a receiving area. The chips of the set are connected in series in the receiving areas by a connecting element. The chips are then released, the connecting element forming a flexible connection.

Abstract: In the fabrication of a thin-film flexible electronic device of the screen type that includes a plurality of thin-film components on a glass support a starting support is prepared, including a rigid bulk substrate and a glass sheet fastened to the rigid bulk substrate by reversible direct bonding so as to obtain a removable interface. The plurality of thin-film components are fabricated on the glass sheet. The glass sheet is separated from the rigid bulk substrate by disassembling the interface and, the glass sheet and the plurality of thin-film components are transferred to a final support.

Abstract: The method enables an assembly of chips, initially formed on a wafer, to be formed. Each chip comprises two parallel main faces joined by side faces. At least one of the side faces comprises at least one groove for housing a thread element. The wafer is first of all stuck onto a flexible film and the chips are then cut. The film is then deformed to space the chips apart from one another and to make the grooves accessible. A daisy chain is then formed joining the chips via at least one thread element, each chip being inserted in the daisy chain by inserting the thread in the groove of said chip and then removing the chip from the deformable film.

Abstract: A microelectronic chip comprises two parallel main faces and side faces. At least one of the faces comprises a recess provided with at least one electrical connection element and forming a housing for a wire element. The wire element simultaneously constitutes both an electrical connection between the chip and the outside via said connection element and a flexible mechanical support for said chip.

Abstract: The display device is achieved with a matrix of pixels. Each pixel comprises a plurality of sub-pixels that are organized within the pixel in one or two directions. Each sub-pixel comprises a color filter arranged facing a plurality of photo-emissive elements, an opaque area separating the color filters. In each of the organization directions of the pixel, the photo-emissive elements have a repetition pitch that is two times smaller than the pitch of the color filters. The size of each color filter is smaller than or equal to the size of the photo-emissive element in said direction. The device comprises a supply control circuit of the photo-emissive elements that comprises means for selecting the photo-emissive elements situated facing the color filter of each pixel.

Abstract: The light-emitting device includes a base substrate and preferably three light-emitting diodes respectively associated with three primary colors and emitting a part of their signal in the direction of the base substrate. The device includes three chromatic photodetectors formed in the base substrate constituting a semiconducting substrate, and each arranged under an associated light-emitting diode. Each chromatic photodetector includes superposed first, second and third layers. The first layer and third layer have a first type of conductivity and the second layer has a second type of conductivity. The device includes a control component connected to the chromatic photodetectors and to the light-emitting diodes to control the global color of the light emitted by the device.