Pixtech S.a.

Stephane Mougin

Jean-Marc Sol

Francis Courreges

Lionel Riviere-Cazaux

Bernard Bancal

Olivier Hamon

Guy Reynaud

Maurice Lobet

Pascal Chassagne

Shinji Kanagawa

Philippe Catania

Catherine Oules-Chaton

The present invention relates to a method of assembly, in a furnace in vacuum conditions or under a neutral atmosphere, of two parallel plates leaving a closed internal space, consisting, in a first step, of performing a peripheral sealing by means of a first seal fusible at a first temperature, while maintaining open at least one opening of communication with the internal space and, in a second step, of closing the opening by means of a closing element with the interposition of a second seal fusible at a second temperature lower than the first temperature.

Method for vacuum assembling a flat display screen

A flat microtip display screen including a cathode provided with active areas of electron emission microtips; a cathodoluminescent anode provided, at least in front of the active microtip areas, with active areas of phosphor elements; a main grid of extraction of electrons emitted by the active microtips towards the phosphor elements; and on the cathode side, at least one sacrificial area of microtips adapted to being addressed, outside screen operation periods and independently from the active areas.

Ion pumping of a flat microtip screen

The present invention relates to a flat display screen anode of the type including at least two sets of alternate parallel bands of anode conductors coated with phosphor elements to be excited by primary electrons, these bands being separated from one another by insulating bands including, at least at the surface, a material with a secondary emission coefficient which is lower than or equal to unity, at least in the energy range of the primary electrons.

Implementation of a flat display screen anode

The present invention relates to a method and device for assembling two elements spaced apart by means of a peripheral seal, consisting of adding a seal on a surface of a first element facing a surface to be assembled of a second element, bringing the assembly thus constituted, in vacuum conditions, to a temperature enabling the melting of the seal while temporarily maintaining, by means of spacers having a thickness higher than the thickness of the seal and distributed outside the seal, the surface of the second element distant from the seal, and enabling the elements to come closer to each other to assemble them, sealably, by means of the melting seal.

Method and device for assembling a flat display screen

A flat display screen includes a cathode (1) with microtips (2) for the electron bombardment of the anode (5) having phosphor elements (7r, 7g, 7b), the cathode (1) and the anode (5) separated by a vacuum space (12) containing a progressive hydrogen release source comprised of a thin layer of hydrogenated material. The progressive hydrogen release source may comprise a resistive layer (11) of the cathode (1) on which the microtips (2) are arranged. The progressive hydrogen release source provides the microtips (2) with a substantially constant emitting power.

Flat display screen with hydrogen source

The present invention relates to a flat display screen anode of the type including an active area having phosphor elements, the active area being surrounded with at least one track in a material having a secondary emission coefficient lower than or equal to one.

Flat display screen anode with protection ring for collecting secondary

An anode (5) for a flat display screen includes at least one group of phosphor strips (7) deposited over corresponding electrode strips (17) separated one from another by an insulating layer (8) etched out in front of the phosphor strips (7), and at least one conductor (21) interconnecting the electrode strips (17) of the group of phosphor strips (7). Each of the electrode strips (17) is formed by a resistive strip (18) for receiving one phosphor strip (7) and at least one biasing strip (19) which is parallel to and joins the interconnecting conductor (21). The biasing strip (19) has a low resistivity with respect to the resistivity of the associated resistive strip (18). The biasing strip (19) is parallel to, laterally borders, and is in contacting engagement with the resistive strip (18). The anode (5) eliminates the risk of electrical arcs between the anode (5) and gate (3) or between adjacent phosphor strips (7) of the anode (5), without impairing the brightness of the screen.

Growing community of inventors

Castelnau le Lez, France

Stephane Mougin