Patent ID: 7905007

Claim:
A method for forming a impedance matching layer structure of an acoustical stack for an ultrasound probe, the method comprising: forming a first impedance matching layer section, for an ultrasound probe, comprising a spring layer at a bottom side of the first matching layer section and a mass layer at a top side of the first matching layer section, the bottom side of the first matching layer section configured to be attached to one of a piezoelectric layer or a quarter-wavelength matching layer, the spring layer comprising a spring material and the mass layer comprising a mass material that has higher impedance than the spring material; and forming at least one additional impedance matching layer section, for an ultrasound probe, comprising a spring layer at a bottom side of the additional matching layer section and a mass layer at a top side of the additional matching layer section, the bottom side of the additional matching layer section configured to be attached to the top side of the first matching layer section, the spring layer comprising the spring material and the mass layer comprising the mass material.