WO2013183377A1 - Structure pour fixer une ligne de transmission à un substrat - Google Patents

Structure pour fixer une ligne de transmission à un substrat Download PDF

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Publication number
WO2013183377A1
WO2013183377A1 PCT/JP2013/061838 JP2013061838W WO2013183377A1 WO 2013183377 A1 WO2013183377 A1 WO 2013183377A1 JP 2013061838 W JP2013061838 W JP 2013061838W WO 2013183377 A1 WO2013183377 A1 WO 2013183377A1
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WO
WIPO (PCT)
Prior art keywords
transmission line
conductor
fixing structure
structure according
axis direction
Prior art date
Application number
PCT/JP2013/061838
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English (en)
Japanese (ja)
Inventor
加藤　登
Original Assignee
株式会社 村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社 村田製作所 filed Critical 株式会社 村田製作所
Priority to CN201390000370.4U priority Critical patent/CN204271299U/zh
Publication of WO2013183377A1 publication Critical patent/WO2013183377A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/62—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/148—Arrangements of two or more hingeably connected rigid printed circuit boards, i.e. connected by flexible means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0237—High frequency adaptations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10189—Non-printed connector

Definitions

  • the present invention relates to a structure for fixing a transmission line to a substrate, and in particular, a transmission line having a plurality of laminated flexible sheets as a base and a conductor for transmitting a signal fixed to a wiring board.
  • the present invention relates to a structure for fixing a line to a substrate.
  • Patent Document 1 An example of this type of transmission line is disclosed in Patent Document 1.
  • the main body is formed by laminating a plurality of insulating sheets made of a flexible material, and the signal line extends between the insulating sheets.
  • One ground conductor is provided in the main body so as to be positioned on the positive side in the z-axis direction from the signal line, and the other ground conductor is provided in the main body so as to be positioned on the negative direction side in the z-axis direction from the signal line. It is done.
  • ground conductors overlaps the signal line when viewed in plan from the z-axis direction.
  • a plurality of spacers made of a material harder than the insulating sheet are provided between these ground conductors. One end face of each spacer is in contact with one ground conductor, and the other end face of each spacer is in contact with the other ground conductor.
  • a connector When connecting such a thin transmission line to a high-frequency circuit or a high-frequency element, a connector is used for the connection. That is, for example, a male connector part provided at one end of a transmission line and a female connector part connected to one end of an antenna element are fitted, and a male connector part provided at the other end of the transmission line is fed with power. A form in which a female connector part connected to one end of the circuit is fitted is assumed.
  • male connector parts and female connector parts require complicated manufacturing processes such as bending metal thin plates and molding them with epoxy resin. Difficult to make (expensive).
  • a mounting process for mounting the connector on the transmission line is also required, and as the connector becomes smaller, it becomes more difficult to suppress variations in the position accuracy. Note that if the positional accuracy varies, the characteristic impedance of the transmission line also varies.
  • the method of providing the male connector part and the female connector part on the transmission line has a problem that the burden for fixing the transmission line to the substrate increases.
  • a main object of the present invention is to provide a structure for fixing a transmission line to a substrate, which can suppress a work load for fixing the transmission line to the substrate.
  • a structure for fixing a transmission line to a substrate according to the present invention includes a plurality of laminated flexible sheets (SH11 to SH13: reference numerals corresponding to the examples; the same applies hereinafter) as a base body for transmitting signals.
  • a transmission line (40, 40A) having one conductor (44, 52), and a connecting member provided on the wiring board (10) having a fitting portion (HL1) fitted to the end of the transmission line ( 20), at least a part of the first conductor is exposed at the end of the transmission line, and the connecting member is a signal of the wiring board when the end of the transmission line is fitted with the fitting part.
  • connection member is made of a plurality of laminated flexible sheets (SH1 to SH2, SH3a to SH3b, SH4).
  • the transmission line has a first hardness corresponding to the end portion and a second hardness lower than the first hardness corresponding to a portion other than the end portion.
  • the transmission line further includes a reinforcing member (54d, 58) provided at the end to ensure the first hardness.
  • the connecting member has a third hardness lower than the first hardness.
  • the transmission line further includes convex portions (CV1 to CV2) formed in the vicinity of the end portions for positioning.
  • the end portion of the transmission line has one main surface from which the first conductor is exposed and the other main surface corresponding to the back surface of the one main surface, and the fitting portion is in a state in which the end portion of the transmission line is fitted. And has a pressing portion (BS1) for pressing the other main surface.
  • BS1 pressing portion
  • the pressing portion has a protruding surface that protrudes from the other main surface toward the one main surface.
  • connection member further includes a connection conductor (24, 26a to 26b, 28, 30a to 30b, 32a to 32b, 341a to 341b, 342a to 342b, 29, 31a to 31b) connected to the signal terminal.
  • the first conductor is connected to the signal terminal via the connection conductor.
  • the second conductor has an elastic electrode member (29, 31a to 31b) that protrudes from the position facing the one main surface toward the pressing portion.
  • the first conductor includes a plurality of conductive members (52a to 52c) that are respectively connected to the plurality of terminal members, and the connection conductor is a plurality of connection members (24a) that are respectively connected to the plurality of conductive members. ⁇ 24c, including 28a ⁇ 28c).
  • the end of the transmission line has a folded portion (42bk) that prevents separation from the connection member.
  • the transmission line further includes a second conductor (54) disposed along the first conductor, and at least a part of the second conductor has an end portion of the transmission line connected to the fitting portion of the connection member.
  • the second conductor is exposed at the end of the transmission line so that the second conductor is connected to the ground terminal (16a, 16b) of the wiring board when fitted.
  • the signal terminal includes a plurality of terminal members
  • the first conductor includes a plurality of conductive members (52a to 52c) connected to the plurality of terminal members, respectively.
  • the transmission line is made of a plurality of laminated flexible sheets, when the end of the transmission line is fitted to the fitting part, the surface of the transmission line becomes the surface of the fitting part. Close contact with. This reduces the work burden for fixing the transmission line to the substrate.
  • FIG. 3 is an AA cross-sectional view of the connector shown in FIG.
  • FIG. 3 is an exploded view showing a state in which the connector shown in FIGS. 2 (A) to 2 (B) is exploded.
  • A) is a perspective view which shows the state which looked at the high frequency transmission line applied to this Example from diagonally upward
  • (B) is the state which looked at the high frequency transmission line applied to this Example from diagonally below. It is a perspective view shown.
  • FIG. 3 is an AA cross-sectional view of the connector shown in FIG.
  • FIG. 3 is an exploded view showing a state in which the connector shown in FIGS. 2 (A) to 2 (B) is exploded.
  • A) is a perspective view which shows the state which looked at the high frequency transmission line applied to this Example from diagonally upward
  • (B) is the state which looked at the high frequency transmission line applied to this Example from diagonally below. It is a perspective view shown.
  • FIG. 6 is a BB cross-sectional view of the high-frequency transmission line shown in FIGS. 5 (A) to 5 (B).
  • FIG. 6 is an exploded view showing a state in which the high-frequency transmission line shown in FIGS. 5 (A) to 5 (B) is exploded.
  • A) is a perspective view showing an example of a state where a connector is mounted on a printed wiring board, and (B) is a CC cross-sectional view of the mounting structure shown in (A).
  • (A) is a perspective view showing an example of a state in which a high-frequency transmission line is attached to a connector, and (B) is a DD cross-sectional view of the mounting structure shown in (A).
  • (A) is a top view which shows an example of the portable communication terminal which accommodated the high frequency transmission line of this Example, the connector, and the printed wiring board
  • (B) is principal part sectional drawing of the communication terminal shown to (A).
  • It is principal part sectional drawing which shows an example of the structure of the connector applied to another Example.
  • It is principal part sectional drawing which shows an example of the structure of the connector applied to another Example.
  • FIG. 20 is a perspective view illustrating an example of a state in which the high-frequency transmission line illustrated in FIG. 18 is attached to the connector illustrated in FIG. 19. It is principal part sectional drawing which shows a part of camera module which employ
  • a printed wiring board 10 of this embodiment includes an insulating (dielectric) substrate 12 having a rectangular main surface.
  • the long and short sides of the rectangle forming the main surface of the substrate 12 extend along the X axis and the Y axis, respectively, and the thickness (height) of the substrate 12 extends along the Z axis.
  • the main surface on the positive side and the main surface on the negative side in the Z-axis direction are referred to as “upper surface” and “lower surface”, respectively, as necessary.
  • a wiring conductor and a ground conductor are embedded in the substrate 12 (both not shown).
  • a single signal terminal 14 electrically connected to the wiring conductor is provided on the upper surface of the substrate 12, and two ground terminals 16 a and 16 b electrically connected to the ground conductor are further provided.
  • Each of the signal terminal 14 and the ground terminals 16a and 16b has a rectangular main surface and is formed in a plate shape.
  • the signal terminal 14 and the ground terminals 16a and 16b are arranged in such a manner that the long sides of the rectangles forming the main surfaces are along the X axis and the ground terminals 16a and 16b sandwich the signal terminal 14 in the Y axis direction. 12 are provided at predetermined positions on the upper surface.
  • connector 20 includes a flexible insulator (dielectric) 22 as a base body, a length L1 along the X axis, and a width W1 along the Y axis. And a height T1 along the Z-axis.
  • the insulator 22 is also formed with a through hole HL1 that passes through the center of both side surfaces facing the X-axis direction.
  • the through hole HL1 has a length L1 along the X axis, a width W2 along the Y axis, and a height T2 along the Z axis.
  • the width W2 is smaller than the width W1, and the height T2 is smaller than the height T1.
  • a single signal terminal 24 and two ground terminals 26a and 26b are provided on the bottom surface of the through hole HL1.
  • Each of the signal terminal 24 and the ground terminals 26a and 26b has a rectangular main surface and is formed in a plate shape.
  • the signal terminal 24 and the ground terminals 26a and 26b are formed in a through hole in such a manner that the long sides of the rectangles forming the main surfaces are along the X axis and the ground terminals 26a and 26b sandwich the signal terminal 24 in the Y axis direction.
  • the length of the short side of the rectangle forming the main surface of each of the signal terminal 24 and the ground terminals 26a and 26b is much shorter than “W2” which is the width of the through hole HL1, and further, the length of these short sides. The total sum is also shorter than the width W2. Therefore, the signal terminal 24 and the ground terminals 26a and 26b are provided on the bottom surface of the through hole HL1 without contacting each other.
  • a single signal terminal 28 and two ground terminals 30a and 30b are provided on the lower surface of the insulator 22 .
  • the signal terminal 28 and the ground terminals 30a and 30b are also formed in a plate shape having a rectangular main surface.
  • the signal terminal 28 is provided directly below the signal terminal 24, the ground terminal 30a is provided on the positive side in the Y-axis direction from directly below the ground terminal 26a, and the ground terminal 30b is provided on the Y-axis from directly below the ground terminal 26b. Provided on the negative side of the direction.
  • plate-like conductors 32 a and 32 b are embedded in the insulator 22.
  • the plate-like conductor 32a is embedded in a position partially overlapping with the ground terminals 26a and 30a when viewed from the Z-axis direction.
  • the plate-like conductor 32b is embedded at a position partially overlapping with the ground terminals 26b and 30b when viewed from the Z-axis direction.
  • the signal terminals 24 and 28 are connected to each other through a via-hole conductor 36.
  • the ground terminal 26a is connected to the plate-like conductor 32a via the via-hole conductor 341a, and the plate-like conductor 32a is connected to the ground terminal 30a via the via-hole conductor 342a.
  • the ground terminal 26b is connected to the plate-like conductor 32b via the via-hole conductor 341b, and the plate-like conductor 32b is connected to the ground terminal 30b via the via-hole conductor 342b.
  • the insulator 22 is produced by laminating flexible insulating sheets (dielectric sheets) SH1, SH2, SH3a, SH3b, and SH4.
  • Each of the insulating sheets SH1 and SH2 has a length L1 along the X axis, a width W1 along the Y axis, and a height T3 along the Z axis.
  • Each of the insulating sheets SH3a and SH3b has a length L1 along the X axis, a width W3 along the Y axis, and a height T2 along the Z axis.
  • the insulating sheet SH4 has a length L1 along the X axis, a width W1 along the Y axis, and a height T4 along the Z axis.
  • the height T3 corresponds to “(T1-T2) / 4”
  • the height T4 corresponds to “(T1-T2) / 2”.
  • the width W3 corresponds to “(W1 ⁇ W2) / 2”.
  • the signal terminal 28 and the ground terminals 30a and 30b are formed on the lower surface of the insulating sheet SH1
  • the plate conductors 32a and 32b are formed on the upper surface of the insulating sheet SH1
  • the signal terminal 24 and the ground terminals 26a and 26b are formed on the insulating sheet. It is formed on the upper surface of SH2.
  • the via-hole conductors 341a to 341b and 342a to 342b are formed at positions indicated by broken lines.
  • the insulating sheet SH2 is laminated on the insulating sheet SH1, the insulating sheets SH3a and SH3b are laminated on the insulating sheet SH2, and the insulating sheet SH4 is laminated on the insulating sheets SH3a and SH3b.
  • the four side surfaces forming the insulating sheet SH2 are flush with the four side surfaces forming the insulating sheet SH1. Further, both side surfaces in the X-axis direction of the insulating sheet SH3a are flush with both side surfaces in the X-axis direction of the insulating sheet SH2, and the positive side surface in the Y-axis direction of the insulating sheet SH3a is the positive side in the Y-axis direction of the insulating sheet SH2. It is flush with the side surface.
  • Both side surfaces in the X-axis direction of the insulating sheet SH3b are flush with both side surfaces in the X-axis direction of the insulating sheet SH2, and the negative side surface in the Y-axis direction of the insulating sheet SH3b is on the negative side in the Y-axis direction of the insulating sheet SH2. Be flush with the side.
  • the positive side surface in the X-axis direction of the insulating sheet SH4 is flush with the positive side surface in the X-axis direction of the insulating sheets SH3a and SH3b, and the negative side surface in the X-axis direction of the insulating sheet SH4 is the insulating sheet SH3a. And it becomes flush with the negative side surface in the X-axis direction of SH3b.
  • the positive side surface of the insulating sheet SH4 in the Y-axis direction is flush with the positive side surface of the insulating sheet SH3a in the Y-axis direction
  • the negative side surface of the insulating sheet SH4 in the Y-axis direction is the Y side of the insulating sheet SH3b. It is flush with the negative side surface in the axial direction.
  • the connector 20 is manufactured by thermocompression bonding with the insulating sheets SH1, SH2, SH3a, SH3b, and SH4 laminated in this manner.
  • the high-frequency transmission line 40 has a flexible thin plate-like insulator (dielectric) 42 as an element body and an arbitrary length along the X axis. It has a width W4 along the Y axis and a height T5 along the Z axis. Note that the width W4 substantially coincides with the above-described width W2, and the height T5 substantially coincides with the above-described height T2.
  • a resist layer 48 having a width slightly smaller than the width W4 and extending in the X-axis direction is provided on the top surface of the insulator 42. Also on the lower surface of the insulator 42, a resist layer 50 having a width slightly smaller than the width W4 and extending in the X-axis direction is provided.
  • the resist layer 48 extends to the end on the positive side of the insulator 42 in the X-axis direction, while the resist layer 50 only extends to the near side of the end on the positive side of the insulator 42 in the X-axis direction. For this reason, the region from the positive end of the resist layer 50 in the X-axis direction to the positive end of the insulator 42 in the X-axis direction on the lower surface of the insulator 42 is exposed to the outside.
  • a signal terminal 44 and ground terminals 46a and 46b are provided.
  • the signal terminal 44 and the ground terminals 46a and 46b are also formed in a plate shape having a rectangular main surface. Further, the signal terminal 44 and the ground terminals 46a and 46b are exposed regions in such a manner that the long sides of the rectangles forming the main surfaces are along the X axis and the ground terminals 46a and 46b sandwich the signal terminal 44 in the Y axis direction. Is provided.
  • a plate-like protrusion CV1 protruding from the positive side surface in the Y-axis direction and a plate-like shape protruding from the negative side surface in the Y-axis direction.
  • the convex portion CV2 is formed.
  • the convex portions CV1 and CV2 are also flexible insulators (dielectrics) and are formed integrally with the insulator 42.
  • Both the convex portions CV1 and CV2 have a rectangular main surface, and each side of the rectangle extends along the X-axis direction or the Y-axis direction. Further, the thickness of each of the convex portions CV1 and CV2 corresponds to “T5”, the upper surfaces of the convex portions CV1 and CV2 are flush with the upper surface of the insulator 42, and the lower surfaces of the convex portions CV1 and CV2 are the same as those of the insulator 42. It is flush with the bottom surface.
  • the distance from the positive side surface in the X-axis direction of the convex portion CV1 to the positive side surface in the X-axis direction of the insulator 42 corresponds to “L2”.
  • the distance from the positive side surface in the X-axis direction of the convex CV2 to the positive side surface in the X-axis direction of the insulator 42 also corresponds to “L2”.
  • the distance L2 is slightly longer than the length L1 described above.
  • FIG. 4 An exploded view of the high-frequency transmission line 40 is shown in FIG.
  • the insulator 42 and the convex portions CV1 and CV2 are produced by laminating flexible insulating sheets (dielectric sheets) SH11 to SH13.
  • the insulating sheets SH11 to SH13 have the same size, and the vicinity of the end of each sheet has a substantially cross shape when viewed from the Z-axis direction.
  • the signal terminal 44 and the first ground layer 46 are formed on the lower surface of the insulating sheet SH11, and the reinforcing layers 58, 62a to 62b are formed on the upper surface of the insulating sheet SH11. Further, a signal conductor 52 for transmitting signals is formed on the upper surface of the insulating sheet SH12, and reinforcing layers 56a to 56b and 60a to 60b are further formed. A second ground layer 54 is formed on the upper surface of the insulating sheet SH13.
  • the first ground layer 46 is integrally formed by the ground terminals 46a and 46b described above and a plate-like ground conductor 46c whose main surface is rectangular and extends in the X-axis direction.
  • the thickness of the ground conductor 46c in the Z-axis direction matches the thickness of the ground terminals 46a and 46b in the Z-axis direction.
  • the upper surface of the ground conductor 46c is flush with the upper surfaces of the ground terminals 46a and 46b.
  • the lower surface is flush with the lower surfaces of the ground terminals 46a and 46b.
  • the width of the ground conductor 46c in the Y-axis direction corresponds to the distance from the end of the ground terminal 46a on the positive side in the Y-axis direction to the end of the ground terminal 46b on the negative side in the Y-axis direction.
  • one long side (long side on the positive side in the Y-axis direction) forming the upper surface or the lower surface of the ground conductor 46c is one long side (long side in the Y-axis direction) forming the upper surface or the lower surface of the ground terminal 46a. Continuous with the long side on the positive side.
  • the other long side of the rectangle forming the upper surface or the lower surface of the ground conductor 46c (the long side on the negative side in the Y-axis direction) is the other long side of the rectangle forming the upper surface or the lower surface of the ground terminal 46b (the Y-axis direction long side).
  • the long side on the negative side is continuous.
  • the ground conductor 46 c is completely covered with the resist layer 50, and the ground terminals 46 a and 46 b are partially covered with the resist layer 50.
  • the reinforcing layer 58 has a main surface that forms a rectangular ring, and is provided at a position corresponding to the end of the insulating sheet SH11 in the X-axis direction. At this time, each side of the rectangular ring extends along the X axis or the Y axis. When viewed from the Z-axis direction, two sides extending along the X-axis among the four sides forming the rectangular ring overlap with the ground terminals 46a and 46b.
  • the reinforcing layer 62a has a rectangular main surface and is provided at a position corresponding to the convex portion CV1.
  • the reinforcement layer 62b has a rectangular main surface and is provided at a position corresponding to the convex portion CV2.
  • each rectangular side forming the reinforcing layer 62a or 62b extends along the X axis or the Y axis.
  • the area of the rectangle forming the reinforcing layer 62a substantially matches the area of the main surface of the convex portion CV1
  • the area of the rectangle forming the reinforcing layer 62b substantially matches the area of the main surface of the convex portion CV2.
  • the signal conductor 52 has a remarkably smaller width than the above-described width W4, and extends in the X-axis direction at the center in the Y-axis direction on the upper surface of the insulating sheet SH2.
  • the end of the signal conductor 52 and the signal terminal 44 are electrically connected by a conductor indicated by a broken line.
  • Each of the reinforcing layers 56a and 56b has a rectangular main surface and is formed in a plate shape.
  • the reinforcing layer 56a is provided near the end in the X-axis direction of the insulating sheet SH12 in a posture where the long side of the rectangle is along the X-axis and at a position on the positive side in the Y-axis direction from the center in the Y-axis direction.
  • the reinforcing layer 56b is provided in the vicinity of the end in the X-axis direction of the insulating sheet SH12 in a posture in which the long side of the rectangle is along the X-axis, and at a position on the negative side in the Y-axis direction from the center in the Y-axis direction.
  • the size of the reinforcing layer 56a substantially matches the size of the ground terminal 46a
  • the size of the reinforcing layer 56b substantially matches the size of the ground terminal 46b.
  • the reinforcing layer 56a overlaps with the ground terminal 46a
  • the reinforcing layer 56b overlaps with the ground terminal 46b.
  • the reinforcing layer 60a has a rectangular main surface and is provided at a position corresponding to the convex portion CV1.
  • the reinforcement layer 60b has a rectangular main surface and is provided at a position corresponding to the convex portion CV2.
  • each rectangular side forming the reinforcing layer 60a or 60b extends along the X axis or the Y axis.
  • the area of the rectangle forming the reinforcing layer 60a substantially matches the area of the main surface of the convex portion CV1, and the area of the rectangle forming the reinforcing layer 60b substantially matches the area of the main surface of the convex portion CV2.
  • the second ground layer 54 has a width that is much smaller than the width W4 and extends parallel to the X-axis direction, and extends parallel to the Y-axis direction and linear conductors 54a and 54b.
  • W4 linear conductor
  • the linear conductors 54a to 54c and the reinforcing layer 54d are integrally manufactured with a common thickness. Therefore, each upper surface is flush and each lower surface is flush.
  • the linear conductor 54a is provided at a position on the positive side in the Y-axis direction with respect to the Y-axis direction center of the upper surface of the insulating sheet SH13, and the linear conductor 54b is in the Y-axis direction with respect to the Y-axis direction center of the upper surface of the insulating sheet SH13.
  • the linear conductor 54c has a length corresponding to the interval between the linear conductors 54a and 54b in the Y-axis direction, and is provided on the upper surface of the insulating sheet SH13 at regular intervals.
  • the reinforcing layer 54d has a contour corresponding to the contour of the reinforcing layer 58, and is provided at a position corresponding to the end portion in the X-axis direction. When viewed from the Z-axis direction, the contour of the reinforcing layer 54d overlaps the contour of the reinforcing layer 58.
  • the second ground layer 54 is electrically connected to the first ground layer 46 and the reinforcing layers 56a to 56b, 58 by a conductor indicated by a broken line.
  • the second ground layer 54 is also completely covered by the resist layer 48.
  • the high-frequency transmission line 40 is manufactured by thermocompression bonding with these materials laminated.
  • the cross section orthogonal to the X-axis at the end of the produced high-frequency transmission line 40 has the structure shown in FIG. Since the reinforcing layers 54d, 56a to 56b, 58 are embedded in the end portion of the high-frequency transmission line 40, the hardness of the end portion is higher than the hardness of the portion other than the end portion, and further, the insulator forming the connector 20 The hardness is higher than 22.
  • the connector 20 is mounted on the printed wiring board 10 as shown in FIGS. 8 (A) to 8 (B), and the high-frequency transmission line 40 is fixed to the connector 20 as shown in FIGS. 9 (A) to 9 (B). Is done.
  • connector 20 is printed with solder paste 62 in correspondence with the positions of signal terminal 14 and ground terminals 16a and 16b provided on printed wiring board 10. Fixed to the plate 10. As a result, the signal terminal 28 and the ground terminals 30a and 30b provided on the connector 20 are connected to the signal terminal 14 and the ground terminals 16a and 16b provided on the printed wiring board 10, respectively.
  • the end of the high-frequency transmission line 40 is inserted into the through hole HL1 formed in the connector 20.
  • “W2” that is the width of the through hole HL1 substantially coincides with “W4” that is the width of the high frequency transmission line 40
  • “T2” that is the height of the through hole HL1 is the height of the high frequency transmission line 40. It almost coincides with a certain “T5”. Therefore, the end of the inserted high-frequency transmission line 40 is fitted into the through hole HL1.
  • the convex portions CV1 and CV2 provided on the high-frequency transmission line 40 engage with the insulator 22 forming the connector 20 in order to determine the relative position between the high-frequency transmission line 40 and the connector 20.
  • the positive side surface of the protrusions CV1 and CV2 in the X-axis direction is in contact with the negative side surface of the insulator 22 in the X-axis direction.
  • the signal terminal 44 and the ground terminals 46a and 46b provided on the high-frequency transmission line 40 are connected to the signal terminal 24 and the ground terminals 26a and 26b provided on the connector 20, respectively.
  • both the insulator 22 forming the connector 20 and the insulator 42 forming the high-frequency transmission line 40 are flexible, the end of the insulator 42 inserted into the through hole HL1 is in close contact with the insulator 22. . Moreover, since the hardness of the edge part of the high frequency transmission line 40 is higher than the hardness of the insulator 22, the work burden at the time of inserting an edge part into the through-hole HL1 is reduced. Further, since the hardness of the portion other than the end portion of the high-frequency transmission line 40 is lower than the hardness of the end portion, the work burden when routing the high-frequency transmission line is reduced.
  • the printed wiring board 10 on which the connector 20 is mounted is housed in, for example, the housing CB1 of the mobile communication terminal 70.
  • the high-frequency transmission line 40 is mounted on the printed wiring board 10 as described above.
  • the circuits or elements mounted on the printed wiring board 10 are connected to each other via the high-frequency transmission line 40. Since the high-frequency transmission line 40 is thin and flexible, it is particularly useful when only a thin gap can be secured in the housing CB1.
  • the side surface that contacts the upper surface of the high-frequency transmission line 40, that is, the top surface, of the inner surface that forms the through hole HL1 is a flat surface.
  • the through hole HL1 may be formed so that the top surface forms a curved surface that protrudes downward (see FIG. 11).
  • the curved surface can also be realized by replacing the flexible insulating sheet SH4 with a leaf spring BS1 (see FIG. 12). A downward external force is applied to the end of the high-frequency transmission line 40 attached to the connector 20 by the curved surface thus formed.
  • the adhesion between the signal terminal 44 and ground terminals 46a and 46b provided on the high-frequency transmission line 40 and the signal terminal 24 and ground terminals 26a and 26b provided on the connector 20 is improved.
  • both the upper and lower surfaces of the end portion of the high-frequency transmission line 40 are flat surfaces.
  • the folded portion 42bk may be formed on the upper surface or the lower surface of the end portion (see FIG. 13). Thereby, the degree of coupling between the high-frequency transmission line 40 and the connector 20 is improved.
  • the plate-like signal terminal 24 and the ground terminals 26a and 26b are provided on the bottom surface of the through hole HL1.
  • elastic electrode members (conductive plate springs) 29, 31a, 31b that protrude toward the top surface of the through hole HL1 are provided on the bottom surface of the through hole HL1 instead of the signal terminal 24 and the ground terminals 26a, 26b.
  • FIG. 1 see FIG. 1
  • the connector 20 includes conductors such as the signal terminal 24 and the ground terminals 26a and 26b.
  • the connector 20 may be formed of only a flexible insulator that forms an arch when viewed from the X-axis direction (see FIG. 15).
  • the signal terminal 44 and the ground terminals 46 a and 46 b provided on the high-frequency transmission line 40 are directly connected to the signal terminal 14 and the ground terminals 16 a and 16 b provided on the printed wiring board 10.
  • the connector 20 is mounted on the printed wiring board 10 with the through hole HL1 extending along the X axis.
  • the connector 20 may be mounted on the printed wiring board 10 with the through hole HL1 extending along the Z axis (see FIG. 16), and further the connector with the through hole HL1 extending along the Z axis. 20 may be embedded in the printed wiring board 10 (see FIG. 17).
  • both of the insulators 22 and 42 described above are made of a flexible thermoplastic resin such as polyimide or liquid crystal polymer. Since the insulating sheet made of the heat-flexible resin generates gas at the time of thermocompression bonding, a plurality of minute holes may be provided in the conductor in order to release this gas.
  • the plate-like conductors 32a to 32b are made of a metal material having silver and copper as a main component and a small specific resistance, preferably a metal foil.
  • the via-hole conductors 36, 341a to 341b, 342a to 342b can be electrically connected between the layers by being metallized at the time of thermocompression bonding of the thermoplastic resin.
  • the thickness of the insulator 42 forming the high-frequency transmission line 40 is adjusted in the range of 100 to 300 ⁇ m. Preferably, this thickness is 200 ⁇ m. Further, the line width of the signal conductor 52 provided in the high-frequency transmission line 40 is adjusted in the range of 100 to 500 ⁇ m. Preferably, the line width is 240 ⁇ m. Further, the line width of each of the linear conductors 54a to 54c forming the second ground layer 54 is adjusted in the range of 25 to 200 ⁇ m. Preferably, these line widths are 100 ⁇ m. Further, the distance between the linear conductors 54c is adjusted in the range of 1000 to 10000 ⁇ m. Preferably, this distance is 2500 ⁇ m. The size of the connector 20 is adjusted to match the size of the high-frequency transmission line 40.
  • a single signal conductor 52 is formed on the upper surface of the insulating sheet SH12 (see FIG. 7).
  • a plurality of signal conductors 52a to 52c are formed on the upper surface of the insulating sheet SH12 instead of the signal conductor 52, and a plurality of signal terminals 44a to 44c are formed in the exposed region instead of the signal terminal 44. You may make it do.
  • the high-frequency transmission line 40A illustrated in FIG. 18 will be described.
  • symbol detailed description is abbreviate
  • each of the signal conductors 52a to 52c extends in the X-axis direction on the upper surface of the insulating sheet SH12.
  • the signal conductors 52a to 52c are arranged so as to be aligned in the positive direction of the Y axis in the order of 52c, 52b, and 52a at a position sandwiched between the reinforcing layers 56a and 56b.
  • the signal terminal 44a is formed at a position overlapping the signal conductor 52a when viewed from the Z-axis direction
  • the signal terminal 44b is formed at a position overlapping with the signal conductor 52b when viewed from the Z-axis direction
  • the signal terminal 44c is formed from the Z-axis direction. It is formed at a position overlapping the signal conductor 52c as viewed.
  • the signal conductors 52a to 52c are connected to the signal terminals 44a to 44c by via-hole conductors indicated by broken lines, respectively.
  • the connector 20A to which such a high-frequency transmission line 40A is attached is configured as shown in FIG. According to FIG. 19, the signal terminals 24a, 24b and 24c are formed on the upper surface of the insulating sheet SH2 instead of the signal terminal 24, and the signal terminals 28a, 28b and 28c are formed on the lower surface of the insulating sheet SH2 instead of the signal terminal 28. Is done. More specifically, each of the signal terminals 24a to 24c extends in the X-axis direction on the upper surface of the insulating sheet SH1. Each of the signal terminals 28a to 28c also extends in the X-axis direction on the lower surface of the insulating sheet SH1.
  • the signal terminals 24a to 24c are provided at positions where they contact the signal conductors 52a to 52c when the high-frequency transmission line 40A is attached to the connector 20A.
  • the signal terminal 28a is provided at a position overlapping the signal terminal 24a when viewed from the Z-axis direction
  • the signal terminal 28b is provided at a position overlapping with the signal terminal 24b when viewed from the Z-axis direction
  • the signal terminal 28c is provided from the Z-axis direction. It is provided at a position overlapping the signal terminal 24c as viewed.
  • the signal terminals 28a to 28c are respectively connected to the signal terminals 24a to 24c by via hole conductors indicated by broken lines. *
  • the high-frequency transmission line 40A is attached to or connected to the connector 20A in the manner shown in FIG. Further, the high frequency transmission line 40A and the connector 20A are mounted on, for example, the camera module 80 in the manner shown in FIG. According to FIG. 21, the camera module 80 includes a thermoplastic module substrate 82 that is formed by a number of layers that is greater than the number of layers of the high-frequency transmission line 40 and that is slightly harder than the number of layers of the high-frequency transmission line 40. .
  • the connector 20 is mounted on such a module substrate 82.
  • an image sensor IC 84 and a lens unit 86 having a lens 88 are mounted on the module substrate 82.
  • the module substrate 82 further incorporates passive elements such as the inductor element 90.
  • the connector 20A shown in FIG. 19 may be provided with the leaf spring BS1 shown in FIG. 12, or the leaf springs 29, 31a, and 31b shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

La présente invention porte sur une ligne de transmission à haute fréquence (40) qui comprend une pluralité de feuilles flexibles stratifiées sous la forme d'un élément de base, une borne de signal (44) et des bornes de masse (46a, 46b). Un connecteur (20) avec un trou traversant (HL1) dans lequel une extrémité de la ligne de transmission à haute fréquence (40) est adaptée est disposé sur une carte à circuits imprimés (10). La carte à circuits imprimés (10) comprend une borne de signal (14) et des bornes de masse (16a, 16b). Une borne de signal (44) et les bornes de masse (46a, 46b) sont exposées à l'extrémité de la ligne de transmission à haute fréquence (40). Le connecteur (20) est disposé de telles sorte que, quand l'extrémité de la ligne de transmission à haute fréquence (40) est insérée dans le trou traversant (HL1), la borne de signal (44) et les bornes de masse (46a, 46b) sont connectés à la borne de signal (14) et aux bornes de masse (16a, 16b) respectivement.
PCT/JP2013/061838 2012-06-06 2013-04-23 Structure pour fixer une ligne de transmission à un substrat WO2013183377A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201390000370.4U CN204271299U (zh) 2012-06-06 2013-04-23 传输线路在基板上的固定结构

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012128633A JP2015156255A (ja) 2012-06-06 2012-06-06 伝送線路の基板への固定構造
JP2012-128633 2012-06-06

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WO2013183377A1 true WO2013183377A1 (fr) 2013-12-12

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CN (1) CN204271299U (fr)
WO (1) WO2013183377A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020137723A1 (fr) * 2018-12-27 2020-07-02 株式会社村田製作所 Élément connecteur et ensemble de connecteurs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002237343A (ja) * 2001-02-09 2002-08-23 Hitachi Cable Ltd フラットケーブル及びその製造方法
JP2005093269A (ja) * 2003-09-18 2005-04-07 Fujikura Ltd コネクタ
JP2011258343A (ja) * 2010-06-07 2011-12-22 Yamaichi Electronics Co Ltd ケーブル接続構造、および、ケーブル用コネクタ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002237343A (ja) * 2001-02-09 2002-08-23 Hitachi Cable Ltd フラットケーブル及びその製造方法
JP2005093269A (ja) * 2003-09-18 2005-04-07 Fujikura Ltd コネクタ
JP2011258343A (ja) * 2010-06-07 2011-12-22 Yamaichi Electronics Co Ltd ケーブル接続構造、および、ケーブル用コネクタ

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CN204271299U (zh) 2015-04-15

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