摘要:
The piezoelectric vibrator manufacturing method of the invention is a method for manufacturing a plurality of piezoelectric vibrators in which a piezo-electric vibration member is sealed up in a cavity formed between a base substrate and a lid substrate bonded to each other, all at once by utilizing a base substrate wafer and a lid substrate wafer, and the method comprises a recess forming step of forming, in the lid substrate wafer, a plurality of cavity recesses for forming cavities when the two wafers are overlaid; a through-electrode forming step of forming a plurality of through-electrodes in and through the base substrate wafer; a routing electrode forming step of forming a plurality of routing electrodes connected electrically with the through-electrodes, on the upper face of the base substrate wafer; a mounting step of bonding the plural piezoelectric vibration members to the upper face of the base substrate wafer via the routing electrodes; an overlaying step of overlaying the base substrate wafer and the lid substrate wafer thereby to house the piezoelectric vibration members in the cavities surrounded by the recesses and the two wafers; a bonding step of bonding the base substrate wafer and the lid substrate wafer thereby to seal up the piezoelectric vibration members in the cavities; an external electrode forming step of forming a plurality of external electrodes connected electrically with the through-electrodes, on the lower face of the base substrate wafer; and a cutting step of cutting the two bonded wafers thereby to shred them into the plural piezoelectric vibrators. The through-electrode forming step includes a through-hole forming step of forming a plurality of through-holes in and through the base substrate wafer; a setting step of disposing electroconductive core members which are formed to have two flat ends and a thickness substantially equal to that of the base substrate wafer, in those plural through-holes, and disposing connection members between the core mem-bers and the through-holes; and a firing step of firing the connection members at a predetermined temperature to thereby integrally fix the through-hole, the connection member and the core member to each other.
摘要:
The piezoelectric vibrator of the invention comprises a base substrate, a lid substrate in which cavity recesses are formed and which is bonded to the base substrate in such a state that the recesses face the base substrate, a piezoelectric vibration member bonded to the upper face of the base substrate in such a state that it is housed in the cavity formed of the recess between the base substrate and the lid substrate, an external electrode formed on the lower face of the base substrate, a through-electrode formed in and through the base substrate and electrically connected with the external electrode with keeping the airtightness inside the cavity, and a routing electrode formed on the upper face of the base substrate to electrically connect the through-electrode to the bonded piezoelectric vibration member; wherein the through-electrode is formed through hardening of a paste containing a plurality of metal fine particles and a plurality of glass beads.
摘要:
The piezoelectric vibrator comprises a base substrate; a lid substrate in which cavity recesses are formed and which is bonded to the base substrate in such a state that the recesses face the base substrate; a piezoelectric vibration member bonded to the upper face of the base substrate in such a state that it is housed in the cavity formed of the recess between the base substrate and the lid substrate; an external electrode formed on the lower face of the base substrate; a through-electrode formed in and through the base substrate and electrically connected with the external electrode with keeping the airtightness inside the cavity; and a routing electrode formed on the upper face of the base substrate to electrically connect the through-electrode to the bonded piezoelectric vibration member; wherein the through-electrode is formed of a cylindrical body, which is formed of a glass material to have two flat ends and a thickness substantially equal to that of the base substrate, and is implanted in the through-hole running through the base substrate; and an electroconductive core member which is formed to have two flat ends and a thickness substantially equal to that of the base substrate and is inserted into the center hole of the cylindrical body; and the through-hole, the cylindrical body and the core member are integrally fixed to each other by firing.
摘要:
A piezoelectric vibrator according to the invention includes a base substrate and a lid substrate which are connected to each other and have a cavity formed therebetween; a piezoelectric vibrating reed that is mounted on the base substrate in the cavity; an external electrode that is formed on a lower surface of the base substrate; and a through electrode which is formed so as to pass through the base substrate, maintain the airtightness in the cavity, and electrically connect the piezoelectric vibrating reed with the external electrode. The through electrode is formed by a press molding by a forming mold having a pin, and includes a through hole of a taper-shaped section, in which a taper angle is in the range of 15° or more and 20° or less, and a conductive paste that is hardened after being filled in the through hole.
摘要:
Provided is a method for manufacturing a high-quality piezoelectric vibrator in which reliable air-tightness of the inside of the cavity is maintained, and stable conduction between the piezoelectric vibrating reed and the outer electrodes is secured. The manufacturing method includes a penetration hole forming step of forming a plurality of penetration holes 30 on a base substrate wafer 40; a core portion insertion step of inserting core portions 7 of a rivet member 9 into the penetration holes from one side of the wafer; a melting step of bringing the rear surface of the base portion 8 of the rivet member into contact with the wafer to close the opening end on the one side of the penetration holes, heating the wafer while pressing the other side of the wafer so as to melt a surface portion on the other side of the wafer to produce a liquid base substrate material 41, and causing the material to flow into gaps between the inner circumferential walls of the penetration holes and the rivet member from the other side of the penetration holes so as to close the gaps; a curing step of cooling and curing the material poured into the gaps; and a polishing step of removing the base portion and polishing the wafer and the rivet member so that the base substrate wafer and the core portion are planarized.
摘要:
A package manufacturing method capable of preventing recess portions from being formed in penetration electrodes. The package manufacturing method includes an electrode member forming step of inserting core portions made of a metallic material into cylindrical members made of a first glass material and heating the cylindrical members so as to weld the cylindrical members to the core portions, thus forming electrode members; a hole forming step of forming holes, in which the electrode members 8 are disposed, on a penetration electrode forming board wafer made of a second glass material; an electrode member disposing step of disposing the electrode members in the holes formed on the wafer; a welding step of heating the wafer and the electrode members so as to be welded to each other; and a cooling step of cooling the wafer and the electrode members. In the welding step, a pressurizing mold is placed on the surface of the wafer, the wafer is pressed by the pressurizing mold, and the wafer and the electrode members are heated to a temperature higher than the softening point of the first glass material and the softening point of the second glass material, whereby the wafer and the electrode members are welded to each other.
摘要:
To efficiently fabricate a high quality piezoelectric vibrating piece regardless of an accuracy of an outer shape of a wafer, there is provided a method of fabricating a plurality of piezoelectric vibrating pieces at a time utilizing a wafer S, the method including a step of forming two or more of through holes 40 and forming outer shapes of a plurality of piezoelectric plates 10 simultaneously with the through holes by constituting reference points G by centers of the through holes by etching the wafer by a photolithography technology, a step of preparing a jig for a wafer having inserting pins formed to project by a number the same as a number of the through holes from above a flat plate portion, thereafter, mounting the wafer on the flat plate portion in a state of inserting the inserting pin into the through hole, a step of forming an electrode on outer surfaces of the plurality of piezoelectric plates, and a step of cutting to separate the plurality of piezoelectric plates from the wafer to fragment, and in the electrode forming step and the cutting step, positioning to the wafer is carried out by constituting the reference point by the center of the through hole.
摘要:
This package manufacturing method is a method for manufacturing a package using a rivet having a flat plate-shaped head portion and a core portion protruding from a rear surface of the head portion. The package includes: a plurality of substrates that are bonded to each other: a cavity that houses an object to be housed in an airtightly sealed state; the core portion which is disposed in a through hole that penetrates a base substrate and which electrically connects the object to be housed with the outside; and a glass frit that is filled between the through hole and the core portion and is fired to form a seal between the through hole and the core portion. The package manufacturing method includes: a rivet disposing step of inserting the core portion into the through hole until the rear surface of the head portion comes into contact with a first surface of the base substrate; a glass frit filling step of filling the glass frit in a paste form between the through hole and the core portion; and a firing step of integrally fixing the through hole, the rivet and the glass frit by firing the filled glass frit, and sealing between the through hole and the core portion. A gas relief passage, which leads from a base end of the core portion to a side surface or a front surface of the head portion, is formed on the rear surface of the head portion of the rivet.
摘要:
A method of manufacturing a piezoelectric vibrator according to the invention includes the steps of: inserting a core portion of a conductive rivet member, which includes a planar base portion and the core portion extending in a direction vertical to the surface of a base portion, into a penetration hole of the base substrate and bringing the base portion of the rivet member into contact with a first surface of the base substrate; applying a paste-like glass frit on a second surface of the base substrate and moving a first squeegee which comes into contact with the second surface with an attack angle in one direction to thereby fill the glass frit in the penetration hole; and moving a second squeegee which comes into contact with the second surface with an attack angle in a direction opposite to the one direction to thereby fill the glass frit applied redundantly on the second surface in the penetration hole.