Sunday, February 07, 2010

US Patent 7656252 - MEMS resonator with tapered electrode

http://www.freepatentsonline.com/7656252.html

This patent is from Seiko Epson and teaches a MEMS resonator less susceptible to etching residue and current leakage by providing a tapered contact electrode. Claim 1 reads:

1. A micro-electro-mechanical-system resonator, comprising:

a substrate;

a fixed electrode formed on the substrate; and

a movable electrode, arranged facing the fixed electrode and driven by an electrostatic attracting force or an electrostatic repulsion force that acts on a gap between the fixed electrode and the movable electrode;

wherein the fixed electrode has a tapered surface on a side thereof.

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Thursday, March 13, 2008

US Patent 7342179 - Metallic nanoparticle bonding layer

http://www.freepatentsonline.com/7342179.html

This patent from Seiko Epson (priority 1/14/2004) includes some basic claims to using fused nanoparticles as a bonding material. Claim 1 reads:

1. An electronic device comprising: two components; a receiving layer on at least one of the two components, the receiving layer including at least one of conductive particles and conductive fibers; and metallic nanoparticles on the receiving layer and bonding the two components together; wherein at least some of the nanoparticles are bonded together and closely contacted with the receiving layer by fusing.

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