Commissariat a L'energie Atomique

Stanley Electric Co., Ltd

Pixtech S.a.

Pixel International S.a.

Pixel International

Jean-Frederic Clerc

Jean-Claude Deutsch

Denis Sarrasin

Aime Perrin

Jean Dijon

Robert Meyer

Bernard Bechevet

Brigitte Montmayeul

Thierry Leroux

Anne Ghis

Michel Garcia

Andre Chenevas-Paule

Richard Pepi

Stephane Renard

Pierre Vaudaine

Marie-Dominique Bruni

Christine Ebel

Olivier Hamon

Jean-Francedillaois Boronat

Francis Muller

Denis Randet

Laurence Rabas

Sylvie Vey

Support comprising electrodes covered by a deposit and a system for reading this support. This support comprising a substrate (22) and electrodes (24) on this substrate, at least one of these electrodes being designed to be covered by a deposit capable of recognizing and capturing molecule-targets that are sensitive to a first light and that are capable of emitting a second light when they are excited by the first light. The substrate and electrodes are transparent to at least the first or the second light. The system comprises a light source (60) emitting the first light and means (62) of detecting the second light. Application to biological sensors.

Electrode support comprising at least one electrode covered by a deposit

Microsystems for biological analyses, their use for detecting analytes,

Process and devices for the electrolytic formation of a deposit on a

Information recording medium, reading apparatus for said medium and processes for implementing the apparatus. According to the invention, the material constituting the recording layer (15) is photoconducting. The apparatus comprises in particular a microprobe (20) and a light source (26) capable of subjecting the recording layer to a lit or unlit state. The resulting variations in resistivity are used to determine whether the read zone is amorphous or crystalline.

Information recording medium, reading apparatus for said medium and

Method for assembling a flat display screen

A cathode includes microtips for flat display screens, of the type including cathode conductors, between a substrate and a gate, the gate including holes inside meshes defined by the cathode conductors. An insulating layer, including wells facing the holes, is interposed between the cathode conductors and the gate. Microtips are deposited in the wells, onto a resistive layer. The cathode conductors are deposited over the resistive layer and are coated with an auxiliary insulating layer.

Flat screen cathode including microtips

A microtip cathode for flat panel display screens has a constant access resistance and includes a substrate (10), a resistive layer (19), at least one cathode conductor (13), an insulating layer (16), and a control gate (3). The microtip cathode further includes an auxiliary insulating layer (18) disposed between the cathode conductor (13) and the insulating layer (16) to suppress needle hole effects in the insulating layer (16).

Microtip cathode with auxiliary insulating layer

An electron collector having an anode constituted by a substrate (21, 40, 41) on which are deposited conductive strips or tracks (23, 43). A dielectric material layer is deposited on at least one of the edges of each conductive strip.

Electron collector having independently controllable conductive strips

Flat display screen with a high inter-electrode voltage

A photolithographic method for patterning small diameter circles at a high resolution on a layer, comprises the steps of depositing a resist layer on said layer; depositing calibrated microspheres, opaque to a radiation, on the surface of the resist layer; and irradiating said resist layer with said radiation.

Photolithographic method for high resolution circle patterning utilizing

A method for manufacturing a fluorescent display screen cathode including microtips, comprises a supporting plate bearing cathode conductors in meshed columns, a resistive layer bearing microtips, an insulating layer and a grid conductive layer in rows. The method comprises the step of simultaneously etching the three upper grid layer, insulating layer and resistive layer according to a single perforated pattern defining both the grid rows and the access resistance to the microtips through the resistive layer.

Method for manufacturing a cathode for fluorescent display screens of

A flat vacuum without pumping stem, for the manufacturing of display screens, comprises two plates made of glass, a sealing peripheral joint interrupted so as to provide an aperture for evacuation of the gases during manufacturing, a thin-film metallic pad disposed on each inner surface of the glass plates at the level of the aperture, and a sealing element made of metal having a low melting point disposed so as to contact the metallic pads.

Flat vacuum chambers without pumping stem

A microdot fluorescent screen having a reduced number of addressing circuits. This screen of N rows (16) is divided into k zones Z.sub.i, each of the N/k rows (16) belonging to N/k families of rows. The k rows (16) of the same family are electrically interconnected. Each zone Z.sub.i also comprises three series of N/k conductive bands (26) each. The bands (26) of a first series are covered by a material (28) luminescing in the red, the bands (26) of a second series are covered by a material (29) luminescing in the green and the bands (26) of a third series are covered by a material (30) luminescing in the blue. Each triplet formed by three bands (26) covered by material luminescing in the red, green and blue is aligned substantially facing a row (16) (grid). The bands (26) of each series in a zone Z.sub.i are electrically interconnected for forming three anodes A.sub.1,i, A.sub.2,i and A.sub.3,i.

Apparatus and method for addressing microtip fluorescent screen

A microdot trichromatic fluorescent screen comprising two facing substrates. The first substrate supports cathode conductors provided with microdots, grids and an insulating layer separating the same. The second substrate supports three series of parallel conductive bands. The conductive bands of each series are electrically interconnected and covered with a material luminescing in one of the three primary colors red, green and blue. Each series of conductive bands corresponds to a red, green or blue anode. The production of this screen requires no positioning between the two substrates.

Microtip trichromatic fluorescent screen

A dot matrix liquid crystal display having segment electrodes and common electrodes, a segment driver circuit and a common driver circuit, a multi-level power source, sensor resistors connected in series to the supply voltage bus lines for the segment electrodes, amplifiers for detecting and ampifying the voltage drop in the sensor resistors, and capacitors for capacitively coupling the common electrodes and the amplifiers. When the segment voltage is changed, the voltage change is sensed through the sensor resister and is fed back to the common electrode to reduce the induced noise on the common electrode.

Growing community of inventors

Saint Egreve, France

Jean-Frederic Clerc