Saes Getters S.p.a.

Giuseppe Urso

Daniele Martelli

Raffaello Lattuada

Corrado Carretti

Stefano Trivellato

Luisa Mantovani

Claudio Boffito

Paolo Della Porta

Mario Borghi

Plinio Innocenzi

Alessandro Martucci

Massimo Guglielmi

Marialuisa Mantovani

An evaporable getter device is provided for cathode-ray tubes (CRTs). The getter device is formed by a metallic container () containing a mixture of powders () of the compound BaAland nickel (Ni), and by two different metallic nets (), superimposed and positioned in the container over the powders. The device allows one to obtain a barium distribution in the CRT that is more uniform and wider than that obtainable with a conventional getter device.

Evaporable getter device with metallic nets

An evaporable getter device containing a mixture of nickel and BaAl,is made to have a shorter barium evaporation time by using a mixture of nickel powders in which the particles of nickel have different morphologies and different specific areas.

Evaporable getter device with reduced activation time

Nitrogenated evaporable getter devices are disclosed which are resistant to the fritting conditions of the production processes of kinescopes for times of about five hours. A process is also disclosed for the production of these devices. The nitrogenated evaporable getter material comprises: 1) BaAl.sub.4 powder, 2) nickel powder, and 3) iron nitride and/or germanium nitride particles that have been coated with a thin vitreous layer of boron oxide and silicon oxide, formed through a sol-gel process employing a starting solution wherein the atomic ratio between boron and silicon ranges from about 4:1 to 0.75:1.

Nitrogenated evaporable getter devices with high fritting resistance and

A frittable evaporable getter device includes a metallic container having a disk-shaped bottom wall and a side wall extending upwardly from the bottom wall. A powder compact having an upper surface in which at least two radial recesses are formed is disposed in the container. The powder compact is formed of a mixture of BaAl.sub.4 powder and nickel powder. A discontinuous metallic member is embedded in the powder compact such that the member does not protrude from the upper surface of the powder compact and the member is spaced apart from the bottom wall of the container. An evaporable getter device having reduced activation time includes a powder compact formed of a mixture of BaAl.sub.4 powder, nickel powder, and between about 0.3% and about 5% by weight based on the total weight of the mixture of a third component selected from aluminum, iron, titanium, and alloys thereof.

Frittable-evaporable getters having discontinuous metallic members,

The invention relates to an integrated getter device essentially consisting of at least one evaporable getter device and at least one non-evaporable getter device, wherein the different getter devices circumscribe areas at least partially superimposed or coincident, lying on essentially parallel or coincident planes and preferably arranged in a coaxial way.

Integrated getter device suitable for flat displays

An evaporable getter device for mounting in an electron tube is provided which comprises a pan-shaped container having a vertical side wall formed around the perimeter of a disc shaped bottom wall and a pulverized getter metal vapor releasing material pressed into the space formed by said side wall and said bottom wall. There is also provided a first heat transfer retarding means which delays the transfer of heat in a circumferential direction through the getter metal vapor releasing material. There is also provided a second heat transfer retarding means which delays the transfer of heat in a radial direction through the getter vapor releasing material. When the getter device is heated by currents induced from a radio frequency field created by a coil positioned outside the tube, opposite the getter device, high yields of getter metal are released in a short time without detachment of the getter material residues from the container.

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Seregno, Italy

Giuseppe Urso