Source: https://patents.google.com/patent/US8450816B2/en
Timestamp: 2019-04-25 10:57:01
Document Index: 524942312

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US8450816B2 - Method for manufacturing a microelectromechanical component; and a microelectromechanical component - Google Patents
Method for manufacturing a microelectromechanical component; and a microelectromechanical component Download PDF
US8450816B2
US8450816B2 US13/357,088 US201213357088A US8450816B2 US 8450816 B2 US8450816 B2 US 8450816B2 US 201213357088 A US201213357088 A US 201213357088A US 8450816 B2 US8450816 B2 US 8450816B2
US13/357,088
US20120119312A1 (en
2008-11-19 Priority to US12/292,435 priority patent/US8124435B2/en
2012-01-24 Application filed by Murata Electronics Oy filed Critical Murata Electronics Oy
2012-01-24 Priority to US13/357,088 priority patent/US8450816B2/en
2012-05-17 Publication of US20120119312A1 publication Critical patent/US20120119312A1/en
2013-05-28 Publication of US8450816B2 publication Critical patent/US8450816B2/en
This is a Continuation Patent Application of U.S. patent application Ser. No. 12/292,435, filed Nov. 19, 2008, now U.S. Pat. No. 8,124,435, which in turn is a Divisional patent application of U.S. patent application Ser. No. 11/430,035, filed on May 9, 2006, now U.S. Pat. No. 7,982,291. The disclosure of each of the prior applications is hereby incorporated by reference herein in their entirety.
Preferably, the first bonding members are manufactured onto the surface of the circuit part. Alternatively, the first bonding members are manufactured onto the redistribution layer of the cover part into openings in the protective layer. Further, preferably, the electronic circuit part is connected to the surface of the cover part protecting the microelectromechanical chip part by means of a flip-chip bonding method.
Preferably, the bump connectors are deposited prior to the flip-chip bonding. Alternatively, the bump connectors are deposited interleaved with the manufacturing of the flip-chip bond. Preferably, the microelectromechanical component is connected to the surface of a circuit board by the flip-chip bonding method, such that the bonding bumps will line up with connection areas of the circuit board.
Preferably, the first bonding members are manufactured onto the surface of the electronic circuit part. Alternatively, the first bonding members are manufactured on top of the redistribution layer of the cover part protecting the microelectromechanical chip part, into openings in the protective layer. Further, preferably, the microelectromechanical chip part is connected to the surface of the electronic circuit part by means of the flip-chip bonding method, the cover part facing the surface of electronic circuit part.
Preferably, the bump connectors are manufactured prior to the flip-chip bonding. Alternatively, the bump connectors are manufactured interleaved with the manufacturing of the flip-chip bond. Preferably, the microelectromechanical component is attached to the surface of a circuit board by means of the flip-chip bonding method, such that the bonding bumps line up with connection areas of the board.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, in which method a microelectromechanical chip part (46) is sealed by means of a cover part (24), (28), (33), (41), (47), (48), which cover part (24), (28), (33), (41), (47), (48) contains lead-in structures for bringing electric connections through the cover part (24), (28), (33), (41), (47), (48), in the method, a first part is one of the following, and a second part is another one than the first part and one of the following:
said microelectromechanical chip part (46) sealed by means of the cover part (24), (28), (33), (41), (47), (48), or
an electronic circuit part (64), (74),
the first part is bonded to the second part by means of first bonding members (61-63), (75-79), and that
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical component.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the cover part (24) is mainly made of glass, such that, into the cover part (24), conductive areas (25-27) extending through the glass element are manufactured out of silicon.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the cover part (28) is mainly made of silicon, and into which cover part (28) glass insulation (32) is manufactured, such that, into the cover part (28), conductive areas (29-31) extending through the glass insulation (32) are manufactured out of silicon.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the cover part (33) is mainly made of silicon, and into which cover part (33) glass insulators (37-40) are manufactured, such that the cover part (33) is divided into strip-like conducting areas (34-36).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the cover part (41) is mainly made of silicon, and into which cover part (41) glass insulation (45) is manufactured, such that the cover part (41) is divided into insular conductive areas (42-44).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the cover part (24) and/or the glass insulators (32), (37-40), (45) are made of some other known dielectric material instead of glass.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the cover part (28), (33), (41) and/or the conductive areas (25-27), (29-31), (34-36), (42-44) are made of some other known conductive material instead of silicon.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the formation of an electric connection between the conductive lead-in of the cover part (24), (28), (33), (41), (47), (48) and the microelectromechanical chip part (46) is implemented by means of a direct bond.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the formation of an electric connection between the conductive lead-in of the cover part (24), (28), (33), (41), (47), (48) and the microelectromechanical chip part (46) is implemented by means of metal layers located on the surface.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the formation of an electric connection between the conductive lead-in of the cover part (24), (28), (33), (41), (47), (48) and the microelectromechanical chip part (46) is implemented by means of a soldering bump.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, prior to bonding the cover part (24), (28), (33), (41), (47), (48) to the microelectromechanical chip part (46), a redistribution layer (49-52), (53), (55), (57), (59) is manufactured onto the surface of the cover part (24), (28), (33), (41), (47), (48).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, after bonding the cover part (24), (28), (33), (41), (47), (48) to the microelectromechanical chip part (46), a redistribution layer (49-52), (53), (55), (57), (59) is manufactured onto the surface of the cover part (24), (28), (33), (41), (47), (48).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a conductive connection is created between the conductive areas (25-27), (29-31), (34-36), (42-44) of the cover part and first bonding members (61-63), (71-79), by means of the redistribution layer (49-52), (53), (55), (57), (59).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a conductive connection is created between the first bonding members (61-63), (71-79) and the second bonding members (66-67), (69-70), (81-82), (84-85), (86-87), by means of the redistribution layer (49-52), (53), (55), (57), (59).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, prior to manufacturing the redistribution layer (49-52), (53), (55), (57), (59), a dielectric layer (54), (56), (58) is manufactured onto the surface of the cover part (24), (28), (33), (41), (47), (48).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a protective layer (60) is manufactured on top of the redistribution layer (49-52), (53), (55), (57), (59).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the first bonding members (61-63) are manufactured onto the surface of the circuit part (64).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the first bonding members (61-63) are manufactured on top of the redistribution layer (49-52), (53), (55), (57), (59) of the cover part (24), (28), (33), (41), (47), (48), into openings in the protective layer (60).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the electronic circuit part (64) is bonded by means of a flip-chip method to the surface of the cover part (24), (28), (33), (41), (47), (48) protecting the microelectromechanical chip part (46).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the electronic circuit part (64) is smaller than the microelectromechanical chip part (46).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the narrow gap between the electronic circuit part (64) and the cover part (24), (28), (33), (41), (47), (48) of the microelectromechanical chip part (46) is filled with an underfill (65).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members (66-67) of the microelectromechanical component are implemented by means of wire connections (66-67).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a plastic cast capsule (68) is cast over the microelectromechanical component.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members (69-70) of the microelectromechanical component are implemented by means of bump connectors (69-70).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the height of the bump connectors (69-70) is at least equal to the total height of the electronic circuit part (64) and the first bonding members (61-63).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the bump connectors (69-70) are manufactured prior to the flip-chip bonding.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the bump connectors (69-70) are manufactured interleaved with the manufacturing of the flip-chip bonding. In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the microelectromechanical component is attached to the surface of a circuit board (71) by means of the flip-chip method, such that the connection bumps (69-70) line up with connection areas (72, (73) of the circuit board (71).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members of the microelectromechanical component are implemented by means of adhesive joints.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members of the microelectromechanical component are implemented by means of direct soldering joints.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members form a conductive connection to the capsule structure of the microelectromechanical component, which capsule structure is provided with conductive coatings.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the capsule structure of the microelectromechanical component is suitably designed to match the microelectromechanical component.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the first bonding members (75-79) are manufactured onto the surface of the electronic circuit part (74).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the first bonding members (75-79) are manufactured onto the redistribution layer (49-52), (53), (55), (57), (59) of the cover part (24), (28), (33), (41), (47), (48) into openings in the protective layer (60).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the microelectromechanical chip part (46), by means of the flip-chip method, is bonded to the surface of the electronic circuit part (74), the cover part (24) facing the surface of the electronic circuit part (74).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the microelectromechanical chip part (46) is smaller than the electronic circuit part (74).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the narrow gap between the electronic circuit part (74) and the cover part (24) of the microelectromechanical chip part (46) is filled with an underfill (80).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members of the (81-82) of the microelectromechanical component are implemented by means of wire connections.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a plastic cast capsule (83) is cast over the microelectromechanical component.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members (84-85) of the microelectromechanical component are implemented by means of bump connectors (84-85).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the height of the bump connectors (84-85) is at least equal to the total height of the microelectromechanical chip part (46) and the first bonding member (75-79).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the bump connectors (84-85) are manufactured prior to the flip-chip bonding.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the bump connectors (84-85) are manufactured interleaved with the manufacturing of the flip-chip bonding.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the microelectromechanical component is attached to the surface of a circuit board by means of a flip-chip method, such that the connection bumps (69-70) line up with connection areas of the circuit board.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members (86-87) of the microelectromechanical component are implemented by means of adhesive joints (86-87).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the second bonding members (86-87) form a conductive connection to the capsule structure (88) of the microelectromechanical component, which capsule structure (88) is provided with conductive coatings (89-90).
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the capsule structure (88) of the microelectromechanical component is suitably designed to match the microelectromechanical component.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the electronic circuit part (64), (74) of the microelectromechanical component possesses electrical signal processing capability.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a plate-like substrate comprising a set of second parts serves as a substrate for installing a first part.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, a set of first parts are installed one by one onto the surface of the plate-like substrate comprising the set of second parts.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, only first parts having passed testing are installed only onto the surface of second parts having passed testing.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the plate-like substrate comprising a second part is diced only after the installation phases.
In a method for manufacturing a microelectromechanical component according to an embodiment of the invention, the plate-like substrate comprising a second part is diced only after final testing.
A microelectromechanical component according to an embodiment of the invention is comprising:
a microelectromechanical chip part (46) sealed by means of a cover part (24), (28), (33), (41), (47), (48), which cover part (24), (28), (33), (41), (47), (48) contains lead-in structures for bringing electric connections through the cover part (24), (28), (33), (41), (47), (48), and
said electronic circuit part (64), (74),
the first part is bonded to the second part by means of first bonding members (61-63), (75-79),
A microelectromechanical component according to an embodiment of the invention comprises a cover part (24) that is mainly made of glass, such that, into the cover part (24), conductive areas (25-27) extending through the glass element are manufactured out of silicon.
A microelectromechanical component according to an embodiment of the invention comprises a cover part (28) that is mainly made of silicon, and into which cover part (28) glass insulation (32) is manufactured, such that, into the cover part (28), conductive areas (29-31) extending through the glass insulation (32) are manufactured out of silicon.
A microelectromechanical component according to an embodiment of the invention comprises a cover part (33) that is mainly made of silicon, and into which cover part (33) glass insulators (37-40) are manufactured, such that the cover part (33) is divided into strip-like conducting areas (34-36).
A microelectromechanical component according to an embodiment of the invention comprises a cover part (41) that is mainly made of silicon, and into which cover part (41) glass insulation (45) is manufactured, such that the cover part (41) is divided into insular conductive areas (42-44).
A microelectromechanical component according to an embodiment of the invention comprises a cover part (24) and/or the glass insulators (32), (37-40), (45) are made of some other known dielectric material instead of glass.
A microelectromechanical component according to an embodiment of the invention comprises a cover part (28), (33), (41) and/or the conductive areas (25-27), (29-31), (34-36), (42-44) are made of some other known conductive material instead of silicon.
In a microelectromechanical component according to an embodiment of the invention the formation of the electric connection between the conductive lead-in of the cover part (24), (28), (33), (41), (47), (48) and the microelectromechanical chip part (46) is implemented by means of a direct bond.
In a microelectromechanical component according to an embodiment of the invention the formation of the electric connection between the conductive lead-in of the cover part (24), (28), (33), (41), (47), (48) and the microelectromechanical chip part (46) is implemented by means of metal layers located on the surface.
In a microelectromechanical component according to an embodiment of the invention the formation of the electric connection between the conductive lead-in of the cover part (24), (28), (33), (41), (47), (48) and the microelectromechanical chip part (46) is implemented by means of a soldering bump.
In a microelectromechanical component according to an embodiment of the invention a redistribution layer (49-52), (53), (55), (57), (59) is manufactured onto the surface of the cover part (24), (28), (33), (41), (47), (48).
In a microelectromechanical component according to an embodiment of the invention, a conductive connection is created between the conductive areas (25-27), (29-31), (34-36), (42-44) of the cover part and first bonding members (61-63), (71-79), by means of the redistribution layer (49-52), (53), (55), (57), (59).
In a microelectromechanical component according to an embodiment of the invention, a conductive connection is created between the first bonding members (61-63), (71-79) and the second bonding members (66-67), (69-70), (81-82), (84-85), (86-87), by means of the redistribution layer (49-52), (53), (55), (57), (59).
In a microelectromechanical component according to an embodiment of the invention, prior to manufacturing the redistribution layer (49-52), (53), (55), (57), (59), a dielectric layer (54), (56), (58) is manufactured onto the surface of the cover part (24), (28), (33), (41), (47), (48).
In a microelectromechanical component according to an embodiment of the invention, a protective layer (60) is manufactured on top of the redistribution layer (49-52), (53), (55), (57), (59).
In a microelectromechanical component according to an embodiment of the invention, the first bonding members (61-63) are manufactured onto the surface of the circuit part (64).
In a microelectromechanical component according to an embodiment of the invention, the first bonding members (61-63) are manufactured on top of the redistribution layer (49-52), (53), (55), (57), (59) of the cover part (24), (28), (33), (41), (47), (48) into openings in the protective layer (60).
In a microelectromechanical component according to an embodiment of the invention, the electronic circuit part (64) is bonded to the surface of the cover part (24), (28), (33), (41), (47), (48) protecting the microelectromechanical chip part (46).
In a microelectromechanical component according to an embodiment of the invention, the electronic circuit part (64) is smaller than the microelectromechanical chip part (46).
In a microelectromechanical component according to an embodiment of the invention, the narrow gap between the electronic circuit part (64) and the cover part (24), (28), (33), (41), (47), (48) of the microelectromechanical chip part (46) is filled with an underfill (65).
In a microelectromechanical component according to an embodiment of the invention, the second bonding members (66-67) of the microelectromechanical component are implemented by means of wire connections (66-67).
In a microelectromechanical component according to an embodiment of the invention, a plastic cast capsule (68) is cast over the microelectromechanical component.
In a microelectromechanical component according to an embodiment of the invention, the second bonding members (69-70) of the microelectromechanical component are implemented by means of bump connectors (69-70).
In a microelectromechanical component according to an embodiment of the invention, the height of the bump connectors (69-70) is at least equal to the total height of the electronic circuit part (64) and the first bonding members (61-63).
In a microelectromechanical component according to an embodiment of the invention, the microelectromechanical component is attached to the surface of a circuit board (71), such that the connection bumps (69-70) line up with connection areas (72, (73) of the circuit board (71).
In a microelectromechanical component according to an embodiment of the invention, the second bonding members of the microelectromechanical component are implemented by means of adhesive joints.
In a microelectromechanical component according to an embodiment of the invention, the second bonding members of the microelectromechanical component are implemented by means of direct soldering joints.
In a microelectromechanical component according to an embodiment of the invention, the second bonding members form a conductive connection to the capsule structure of the microelectromechanical component, which capsule structure is provided with conductive coatings.
In a microelectromechanical component according to an embodiment of the invention, the capsule structure of the microelectromechanical component is suitably designed to match the microelectromechanical component.
In a microelectromechanical component according to an embodiment of the invention, the first bonding members (75-79) are manufactured onto the surface of the electronic circuit part (74).
In a microelectromechanical component according to an embodiment of the invention, the first bonding members (75-79) are manufactured onto the redistribution layer (49-52), (53), (55), (57), (59) of the cover part (24), (28), (33), (41), (47), (48) into openings in the protective layer (60).
In a microelectromechanical component according to an embodiment of the invention, the microelectromechanical chip part (46) is bonded to the surface of the electronic circuit part (74), the cover part (24) facing the surface of the electronic circuit part (74).
In a microelectromechanical component according to an embodiment of the invention, the microelectromechanical chip part (46) is smaller than the electronic circuit part (74).
In a microelectromechanical component according to an embodiment of the invention, that the narrow gap between the electronic circuit part (74) and the cover part (24) of the microelectromechanical chip part (46) is filled with an underfill (80).
In a microelectromechanical component according to an embodiment of the invention, the second bonding members of (81-82) of the microelectromechanical component are implemented by means of wire connections.
In a microelectromechanical component according to an embodiment of the invention, a plastic cast capsule (83) is cast over the microelectromechanical component.
In a microelectromechanical component according to an embodiment of the invention, the second bonding members (84-85) of the microelectromechanical component are implemented by means of bump connectors (84-85).
In a microelectromechanical component according to an embodiment of the invention, the height of the bump connectors (84-85) is at least equal to the total height of the microelectromechanical chip part (46) and the first bonding member (75-79).
In a microelectromechanical component according to an embodiment of the invention, the microelectromechanical component is attached to the surface of a circuit board, such that the connection bumps (69-70) line up with connection areas of the circuit board.
In a microelectromechanical component according to an embodiment of the invention, the second bonding members (86-87) of the microelectromechanical component are implemented by means of adhesive joints (86-87).
In a microelectromechanical component according to an embodiment of the invention, the second bonding members (86-87) form a conductive connection to the capsule structure (88) of the microelectromechanical component, which capsule structure (88) is provided with conductive coatings (89-90).
In a microelectromechanical component according to an embodiment of the invention, the capsule structure (88) of the microelectromechanical component is suitably designed to match the microelectromechanical component.
In a microelectromechanical component according to an embodiment of the invention, the electronic circuit part (64), (74) of the microelectromechanical component possesses electrical signal processing capability.
A microelectromechanical acceleration sensor according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical acceleration sensor.
A microelectromechanical sensor of angular acceleration according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical sensor of angular acceleration.
A microelectromechanical sensor of angular velocity, according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical sensor of angular velocity.
A microelectromechanical pressure sensor, according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical pressure sensor.
A microelectromechanical stabilizer of frequency of oscillation, according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical stabilizer of frequency of oscillation.
A microelectromechanical filter of an electrical signal, according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical filter of an electrical signal.
A microelectromechanical switching component for an electrical signal, according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical switching component for an electrical signal.
A microelectromechanical electric impedance matching device according to an embodiment of the invention comprises:
the second part is larger than the first part, and that, close to the first part, second bonding members (66-67), (69-70), (81-82), (84-85), (86-87) are manufactured onto the surface of the second part, for external connections of the microelectromechanical electric impedance matching device.
A microelectromechanical acceleration sensor according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
A microelectromechanical sensor of angular acceleration according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
A microelectromechanical angular velocity sensor according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
A microelectromechanical stabilizer of frequency of oscillator according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
A microelectromechanical filter of an electrical signal according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
A microelectromechanical switching component for an electrical signal according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
A microelectromechanical impedance matching device according to an embodiment of the invention comprises a microelectromechanical component according to an embodiment of the invention.
By means of methods generally used in applying the flip-chip bonding method, bonding bumps 61-63 are manufactured onto the surface of the circuit part 64 of the microelectromechanical component solution according to the invention. The bumps form a conductive connection with the signal processing circuit of the circuit part. In the solution according to the invention, the circuit part is attached by the flip-chip bonding method onto the surface of the cover part 24 protecting the microelectromechanical chip part 46, such that the bumps 61-63 line up with the openings of the protective layer 60, and form a conductive connection with the conductive areas of the redistribution layer 55 and further via the lead-in structures through the cover part 24 to the areas of the conductive layer located on top of the surface of the microelectromechanical chip part 46 or on the dielectric layer. In the solution according to the invention, the formation of a joint between the conductive lead-in of the cover part 24 of the microelectromechanical component solution and the microelectromechanical chip part 46 can occur directly, by means of metal layers on the surface, by a soldering bump, or via some other connection means, or by some other method.
Further, preferably, in the solution according to the invention, the electronic circuit part 64 is bonded by means of the flip-chip bonding method onto the surface of the cover part 24 protecting the microelectromechanical chip part 46. The bonding bumps 61-63 manufactured onto the surface of the cover part 24 of the microelectromechanical component solution form a conductive connection between the microelectromechanical chip part 46 and the electronic circuit part 64.
FIG. 16 shows a projection view of an implementation of the microelectromechanical component solution, according to the invention, whereby an electronic circuit part is attached on top of the microelectromechanical chip part. In the solution according to the invention, an electronic circuit part 64 is bonded by means of the flip-chip bonding method onto the surface of the cover part 24 protecting the microelectromechanical chip part. In the solution according to the invention, the electronic circuit part 64 has to be smaller than the microelectromechanical chip part, so that necessary contact areas for the external connections of the microelectromechanical component solution remain on the surface of the cover part 24 protecting the microelectromechanical chip part.
FIG. 17 shows a sectional view of an underfill solution of an electronic circuit part of the microelectromechanical component solution according to the invention. In the solution according to the invention, a cover part 24 protects the microelectromechanical chip part 46 of the microelectromechanical component, on a redistribution layer 55 of which cover part 24, into openings in a protective layer 60, bonding bumps 61-63 are aligned, or, alternatively, manufactured. The electronic circuit part 64 of the microelectromechanical component is, by means of the flip-chip method, bonded to the surface of the cover part 24 protecting the microelectromechanical chip part 46.
In the solution according to the invention, the narrow gap between the electronic circuit part 64, bonded by means of the flip-chip method, and the cover part 24 of the microelectromechanical chip part 46, is filled with an underfill 65. In electronics, filling with an underfill 65 is a generally used technique, which has proved a good method for improving the reliability of a circuit solution. In the solution according to the invention, the underfill 65 serves well as a protection against various harmful materials from the environment, such as dampness. Since the electrically sensitive areas of the electronic circuit part 64 and the microelectromechanical chip part 46 are facing each other, and the space between them is sealed with the underfill 65, the microelectromechanical component can be used without a plastic cast capsule, should that be desirable.
FIG. 18 shows a sectional view of an exemplifying implementation solution of the external connections of a microelectromechanical component solution according to the invention. In the solution according to the invention, a cover part 24 protects the microelectromechanical chip part 46 of the microelectromechanical component. The electronic circuit part 64 of the microelectromechanical component is, by means of the flip-chip method, bonded to the surface of the cover part 24 protecting the microelectromechanical chip part 46. The narrow gap between the electronic circuit part 64 of the microelectromechanical component and the cover part 24 of the microelectromechanical chip part 46 is filled with an underfill 65.
FIG. 19 shows a sectional view of a bump connector solution of a microelectromechanical component solution according to the invention. In the solution according to the invention, a cover part 24 protects the microelectromechanical chip part 46 of the microelectromechanical component. Firstly, a dielectric layer 54 is manufactured onto the surface of the cover part 24, then a conductive redistribution layer 55, and further a protective layer 60 made of a dielectric material. The electronic circuit part 64 of the microelectromechanical component is, by means of the flip-chip method, bonded to the surface of the cover part 24 protecting the microelectromechanical chip part.
The cover part 24 protects the microelectromechanical chip part 46 of the microelectromechanical component solution according to the invention, on a redistribution layer 55 of which cover part 24, into openings in a protective layer 60, bonding bumps 69, 70 are manufactured for the external connections of the microelectromechanical component. In the bump connector solution of the microelectromechanical component, according to the invention, the external connections of the microelectromechanical component containing the microelectromechanical chip part 46 and the electronic circuit part 64 are implemented by means of bump connectors 69, 70. The height of the bump connectors 69, 70 is at least equal to the total height of the electronic circuit part 64 and the flip-chip bonding bumps 61-63. The bump connectors 69, 70 can also be deposited or installed before the flip-chip bonding or interleaved with the manufacturing of the flip-chip bond.
When, in the solution according to the invention, the bump connectors 69, are manufactured onto the microelectromechanical component, a microelectromechanical component is obtained suitable for a soldering process without any separate encapsulation.
FIG. 20 shows a sectional view of attaching a microelectromechanical component solution, according to the invention, to a circuit board by means of a bump connector solution. In the solution according to the invention, a cover part 24 protects the microelectromechanical chip part 46 of the microelectromechanical component. The electronic circuit part 64 of the microelectromechanical component is, by means of, for example, the flip-chip method, bonded to the surface of the cover part 24 protecting the microelectromechanical chip part 46.
Bump connectors 69, 70 are manufactured onto the surface of he cover part 24 of the microelectromechanical component solution, according to the invention, for connecting the microelectromechanical component to a circuit board. The height of the bump connectors 69, 70 is at least equal to the total height of the electronic circuit part 64 and the flip-chip bonding bumps 61-63. In the solution according to the invention, the microelectromechanical component solution is connected to the surface of a circuit board 71 by the flip-chip method, for example, such that the bonding bumps 69, 70 in a suitable manner line up with connection areas 72, 73 of the circuit board 71.
Onto suitable spots of the surface of the electronic circuit part 74 of the microelectromechanical component solution according to the invention, bonding bumps 75-79 are manufactured, or, alternatively, the bonding bumps 75-79 are manufactured onto the surface of the cover part 24 protecting the microelectromechanical chip part 46 onto the redistribution layer 55 into openings of the protective layer 60. In the solution according to the invention, the microelectromechanical chip part 46 is bonded, by means of the flip-chip method, to the surface of the electronic circuit part 74 the cover part 24 facing the surface of the electronic circuit part 74. The bonding bumps 75-79 of the microelectromechanical component solution form a conductive connection between the microelectromechanical chip part 46 and the electronic circuit part 74. The narrow gap between the electronic circuit part 74 and the cover part 24 of the microelectromechanical chip part 46 is filled with an underfill 80.
FIG. 22 shows a projection view of an implementation of an alternative microelectromechanical component solution according to the invention, whereby the microelectromechanical chip part is attached on top of the electronic circuit part. In the solution according to the invention, the microelectromechanical chip part 46 is bonded to the surface of the electronic circuit part 74 by means of the flip-chip method. In the solution according to the invention, the microelectromechanical chip part 46 must be smaller than the electronic circuit part 74, so that the necessary contact areas remain on the surface of the electronic circuit part 74 for the external connections of the microelectromechanical component solution.
FIG. 23 shows a sectional view of an exemplifying external connection implementation solution of the alternative microelectromechanical component solution according to the invention. In the solution according to the invention, the microelectromechanical chip part 46 of the microelectromechanical component is bonded to the surface of the electronic circuit part 74 by means of the flip-chip method. The narrow gap between the electronic circuit part 74 and the cover part of the microelectromechanical chip part 46 is filled with an underfill 80.
FIG. 24 shows a sectional view of a bump connector solution of the alternative microelectromechanical component solution according to the invention. In the solution according to the invention, the microelectromechanical chip part 46 is bonded to the surface of the electronic circuit part 74 by means of the flip-chip method. Onto suitable spots on the surface of the electronic circuit part 74 of the microelectromechanical component solution according to the invention, bump connectors 84, 85 are manufactured for the external connections of the microelectromechanical component.
In the alternative bump connector solution of the microelectromechanical component solution according to the invention, the external connections of the microelectromechanical component containing the microelectromechanical chip part 46 and the electronic circuit part 74 are implemented by means of bump connectors 84, 85. The height of the bump connectors 84, 85 is at least equal to the total height of the microelectromechanical chip part 46 and the flip-chip bonding bumps 75-79. The bump connectors 84, 85 can also be deposited or installed before the flip-chip bonding or interleaved with the manufacturing of the flip-chip bonding.
FIG. 25 shows a sectional view of an adhesive joint solution of an alternative microelectromechanical component solution according to the invention. In the solution according to the invention, the microelectromechanical chip part 46 of the microelectromechanical component is bonded to the surface of the electronic circuit part 74 by means of the flip-chip method. Onto the surface of the electronic circuit part 74 of the microelectromechanical component solution according to the invention, adhesive joints 86, 87 are manufactured in suitable spots for the external connections of the microelectromechanical component.
1. A microelectromechanical component, whereby a microelectromechanical chip part is attached on top of an electronic circuit part, wherein the microelectromechanical chip part is sealed by a cover part, and wherein the cover part has lead-in structures for bringing electric connections through the cover part.
2. A microelectromechanical component, whereby a microelectromechanical chip part is attached on top of an electronic circuit part, wherein the microelectromechanical chip part is sealed by a cover part, and wherein a dielectric layer is manufactured on a surface of the cover part.
3. The microelectromechanical component according to claim 2 wherein there is a conductive redistribution layer manufactured after said dielectric layer.
4. The microelectromechanical component according to claim 3 further comprising a protection layer made of a dielectric material on the conductive redistribution layer.
5. The microelectromechanical component according to a claim 1 comprising bonding bumps on at least one spot of the surface of the electronic circuit part.
6. The microelectromechanical component according to a claim 1 comprising bonding bumps on at least one spot of the surface of the cover part.
7. The microelectromechanical component according to a claim 1 comprising bonding bumps on at least one spot of the surface of the cover part, wherein the microelectromechanical chip part is bonded to the electronic circuit part, by means of the flip-chip method.
8. The microelectromechanical component according to a claim 7 wherein said bonding is made so that the surface of the electronic circuit part is bonded to the cover part facing the surface of the electronic circuit part.
9. The microelectromechanical component according to a claim 8, wherein the bonding bumps of the microelectromechanical component form a conductive connection between the microelectromechanical chip part and the electronic circuit part.
10. The microelectromechanical component according to a claim 9, comprising a narrow gap between the electronic circuit part and the cover part of the microelectromechanical chip part.
11. The microelectromechanical component according to a claim 10, wherein said gap is filled with an underfill.
12. A microelectromechanical component, whereby the microelectromechanical chip part is attached on top of the electronic circuit part so that the chip part is bonded to the surface of the electronic circuit part by means of the flip-chip method, wherein the microelectromechanical chip part is smaller than the electronic circuit part, wherein the microelectromechanical chip part is sealed by a cover part, and wherein the cover part has lead-in structures for bringing electric connections through the cover part.
13. A microelectromechanical component according to claim 12, wherein the contact areas remain on the surface of the electronic circuit part for external connections of the microelectromechanical component.
14. A microelectromechanical component according to claim 1, whereby the microelectromechanical chip part is attached on top of the electronic circuit part so that the chip part is bonded to the surface of the electronic circuit part by means of the flip-chip method.
15. The microelectromechanical component according to a claim 14, comprising a narrow gap between the electronic circuit part and a cover part of the microelectromechanical chip part.
16. The microelectromechanical component according to a claim 15, wherein said gap is filled with an underfill.
17. The microelectromechanical component according to a claim 14, wherein external connections, of the microelectromechanical component containing the microelectromechanical chip part and the electronic circuit part, are implemented by means of wire connections.
18. The microelectromechanical component according to a claim 14, wherein external connections, of the microelectromechanical component containing the microelectromechanical chip part and the electronic circuit part, are implemented by means of at least one of the following: bump connectors, conducting adhesive joints, or a direct soldering solution.
19. A microelectromechanical acceleration sensor comprising a microelectromechanical component according to according to claim 1.
20. A microelectromechanical sensor of angular acceleration comprising a microelectromechanical component according to according to claim 1.
21. A microelectromechanical angular velocity sensor comprising a microelectromechanical component according to according to claim 1.
22. A microelectromechanical stabilizer of frequency of oscillator comprising a microelectromechanical component according to according to claim 1.
23. A microelectromechanical filter of an electrical signal comprising a microelectromechanical component according to according to claim 1.
24. A microelectromechanical switching component for an electrical signal comprising a microelectromechanical component according to according to claim 1.
25. A microelectromechanical impedance matching device comprising a microelectromechanical component according to according to claim 1.
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