摘要:
A method and apparatus for vacuum-mounting at least one micro electro mechanical system (MEMS) on a substrate includes a gas injecting section for injecting an inert gas into a vacuum chamber; a substrate aligning section for aligning a semiconductor substrate and a cover, the cover having a cavity formed therein and a getter attached to an interior surface of the cavity; a bonding section for bonding the semiconductor substrate and the cover together; and a controlling section for controlling the substrate aligning section to align the semiconductor and the cover, for controlling the gas injecting section to inject the inert gas into the vacuum chamber, and for controlling the bonding section to bond the semiconductor substrate and the cover together after the inert gas is injected.
摘要:
A film bulk acoustic resonator (FBAR) includes a resistance layer (112,114) deposited on the upper surface of a semiconductor substrate (111) and having a recess (130) therein, a membrane layer (116) on the upper surfaces of the resistance layer (112,114) and the recess, thereby forming an air gap between the membrane layer (116) and the semiconductor substrate (111), and a resonator (120) having a lower electrode (117), a piezoelectric layer (118), and an upper electrode (119) deposited on the membrane layer (116). The resistance layer (112,114) may include first (112) and second (114) resistance layers, the first resistance layer (112) having the recess (130) therein and the second resistance layer (114) being deposited on the upper surfaces of the recess (130). Thus, the air gap is formed without etching the semiconductor substrate (111), enhancing the resonant characteristics of the FBAR. Active and/or passive devices can be formed underneath the air gap to be integrated with the FBAR.
摘要:
A method of fabricating an air gap type Film Bulk Acoustic Resonator (FBAR) is provided. The FBAR fabrication method includes: (a) depositing and patterning a sub-electrode on a semiconductor substrate; (b) depositing and patterning a piezoelectric material layer on the sub-electrode; (c) depositing and patterning an upper electrode on the piezoelectric material layer; (d) forming a hole which passes through the upper electrode, the piezoelectric material layer and the sub-electrode; and (e) injecting a fluorine compound into the hole so that an air gap can be formed on the semiconductor substrate, and non-plasma etching the semiconductor substrate. Since the FBAR fabrication method does not include forming and eliminating the sacrificial layer in the fabrication process, the fabrication process is simplified. In addition, the air gap having the limitless frequency selectivity can be formed and the performance of the FBAR can be enhanced.
摘要:
A resistance layer (112) is formed on a semiconductor substrate (111). A membrane layer is formed on the resistance layer over a recess (112') to form an air gap. One electrode is formed on the upper portion of the membrane layer. A piezoelectric layer is formed on the upper portions of the membrane layer and the electrode. Another electrode is formed on the upper portion of the piezoelectric layer. An independent claim is also included for a film bulk acoustic resonator manufacturing method.
摘要:
There are provided an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes a substrate through which an ink feed hole for supplying ink is formed; a chamber layer stacked above the substrate and including a plurality of ink chambers filled with ink supplied from the ink feed hole; and a nozzle layer stacked on the chamber layer, wherein a plurality of nozzles through which ink is ejected and a plurality of via holes are formed in the nozzle layer.
摘要:
Disclosed is a method for forming a plurality of metal structures having different heights on a semiconductor substrate. The disclosed method for manufacturing a metal structure having different heights includes: forming a plurality of seed layers (20'a,20'b,20c), to have heights corresponding to the metal structure to be formed, on a semiconductor substrate so that those layers can be electrically separated, performing a plating process using a plating mold, and applying different currents to the respective seed layers so that the plating thickness can be adjusted for each of the seed layers. Accordingly, a plurality of metal structures having different heights can be obtained by a plating mold forming process and a plating process that are performed just once, respectively.
摘要:
A metal wiring method for an undercut in a MEMS packaging process includes disposing a MEMS element on a silicon substrate, welding a glass wafer to an upper portion of the silicon substrate having the MEMS element disposed thereon, the glass wafer having a hole formed therein for connecting a metal wiring, depositing a thin metal film for the metal wiring in the hole, and ion-milling the deposited thin metal film. By the ion-milling, the method is capable of connecting a metal wiring to a via hole having an undercut.
摘要:
A method and apparatus for vacuum-mounting at least one micro electro mechanical system (MEMS) on a substrate includes a gas injecting section for injecting an inert gas into a vacuum chamber; a substrate aligning section for aligning a semiconductor substrate and a cover, the cover having a cavity formed therein and a getter attached to an interior surface of the cavity; a bonding section for bonding the semiconductor substrate and the cover together; and a controlling section for controlling the substrate aligning section to align the semiconductor and the cover, for controlling the gas injecting section to inject the inert gas into the vacuum chamber, and for controlling the bonding section to bond the semiconductor substrate and the cover together after the inert gas is injected.
摘要:
Disclosed is a method for forming a plurality of metal structures having different heights on a semiconductor substrate. The disclosed method for manufacturing a metal structure having different heights includes: forming a plurality of seed layers (20'a,20'b,20c), to have heights corresponding to the metal structure to be formed, on a semiconductor substrate so that those layers can be electrically separated, performing a plating process using a plating mold, and applying different currents to the respective seed layers so that the plating thickness can be adjusted for each of the seed layers. Accordingly, a plurality of metal structures having different heights can be obtained by a plating mold forming process and a plating process that are performed just once, respectively.