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US 8,053,258 B2Granted
Thick film sealing glass compositions for low temperature firing
AssigneeE. I. Du Pont de Nemours and Company
InventorsLech Wilczek, Ross Getty, Phil Lynch
Life of this patent
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Abstract
The present invention is a composition that may be used for sealing applications in the manufacture of electronic devices. The composition includes organic vehicles that may be removed upon low temperature firing in air or inert atmospheres. The present invention is further a process for the use of the composition.
Claims14
A sealing process comprising:
- (a) depositing on a substrate comprising carbon nanotubes as emitter elements a bead or patterned layer of a composition of matter comprising, in admixture, (i) glass frit, (ii) a solvent, and (iii) an organic vehicle selected from one or more members of the group consisting of a polystyrene, a polyolefin, a polyacrylate, a polyester, a polycarbonate, a polyol, a polyether, a polyacetal and a polyamide;
- wherein the organic vehicle has a molecular weight in the range of about 200 to about 1000,
- (b) volatilizing the solvent and/or organic vehicle, and
- (c) firing the bead or patterned layer in the range of 360° C. to 480° C. to sinter the glass frit and create a hermetic seal.
1 more element
A sealing process comprising:
- (a) depositing on a first substrate a bead or patterned layer of a composition of matter comprising, in admixture, (i) glass frit, (ii) a solvent, and (iii) an organic vehicle selected from one or more members of the group consisting of a polystyrene, a polyolefin, a polyacrylate, a polyester, a polycarbonate, a polyol, a polyether, a polyacetal and a polyamide;
- wherein the organic vehicle has a molecular weight in the range of about 200 to about 1000,
- (b) volatilizing the solvent and/or organic vehicle,
- (c) bringing a second substrate into contact with the bead or patterned layer, and
- (d) firing the bead or patterned layer in the range of 360° C. to 480° C. to sinter the glass frit and create a hermetic seal,
- wherein the first substrate or the second substrate comprises carbon nanotubes as emitter elements.
3 more elements
Dependencies are inferred from the claim text.