Abstract:
A multilayer ceramic micropump including a monolithic ceramic package formed of a plurality of ceramic layers defining therein an integrated first ball check valve, and a second ball check valve in microfluidic communication with the first ball check valve, and an actuator characterized as actuating a pumping motion, thereby pumping fluids through the first ball check valve and the second ball check valve.
Abstract:
A method for forming an electrically isolated via in a multilayer ceramic package and an electrical connection formed within the via are disclosed. The method includes punching a first via in a first layer, filling the first via with a cross-linkable paste, curing the paste to form an electrical insulator precursor and forming the via in the insulator precursor. The electrical connection formed includes an insulator made from a cross-linked paste supported by a substrate of a multilayer ceramic package and a conductive connection supported by the insulator.
Abstract:
A method of producing a glass/metal package where a glass portion of the package is built up around a provided leadframe (10) using applications of solderable and glass pastes (20) which are subsequently fired (30). The glass paste and leadframe are chosen to have similar coefficients of expansion and the leadframe is pretreated to degasify and control oxidation of the metal to promote glass adhesion to the leadframe and prevent microcracking at a glass/metal interface. A seal ring is applied to the glass paste (40) and a lid is attached to the seal ring (50). The package is used to provide a sealed inert internal environment for sensitive electronic components such as a piezoelectric element. The package may be configured for leaded or surface mounting (60).
Abstract:
Solder and a method of manufacturing the solder are disclosed wherein powdered free silver (15) is added to a solder alloy (12) with a particle size sufficient to preserve silver metallization during use and with a concentration sufficient to maximize the effectiveness and avoid adverse effects on solder reflow characteristics. Preferably, the particle size is in a range of approximately 5 mu m to 20 mu m and the powdered free silver is added in a concentration of approximately 5 % to 10 %.
Abstract:
A method for forming an electrically isolated via in a multilayer ceramic package and an electrical connection formed within the via are disclosed. The method includes punching a first via (30) in a first layer (10), filling the first via with a cross-linkable paste (40), curing the paste to form an electrical insulator precursor and forming the via in the insulator precursor. The electrical connection formed includes an insulator made from a cross-linked paste supported by a substrate of a multilayer ceramic package and a conductive connection supported by the insulator.