US20010003371A1 - Unit type clip lead terminal, clip lead terminal connecting method, lead terminal connecting board, and method of producing board with lead terminals - Google Patents
Unit type clip lead terminal, clip lead terminal connecting method, lead terminal connecting board, and method of producing board with lead terminals Download PDFInfo
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- US20010003371A1 US20010003371A1 US08/818,994 US81899497A US2001003371A1 US 20010003371 A1 US20010003371 A1 US 20010003371A1 US 81899497 A US81899497 A US 81899497A US 2001003371 A1 US2001003371 A1 US 2001003371A1
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- portions
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- terminals
- board
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
-
- 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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4092—Integral conductive tabs, i.e. conductive parts partly detached from the substrate
-
- 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
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
- H01R43/205—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve with a panel or printed circuit board
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3405—Edge mounted components, e.g. terminals
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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
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09145—Edge details
- H05K2201/09163—Slotted edge
-
- 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
- H05K2201/09—Shape and layout
- H05K2201/09145—Edge details
- H05K2201/0919—Exposing inner circuit layers or metal planes at the side edge of the PCB or at the walls of large holes
-
- 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
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09536—Buried plated through-holes, i.e. plated through-holes formed in a core before lamination
-
- 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
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/1034—Edge terminals, i.e. separate pieces of metal attached to the edge of the PCB
-
- 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
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10386—Clip leads; Terminals gripping the edge of a substrate
-
- 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
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10742—Details of leads
- H05K2201/10886—Other details
- H05K2201/10924—Leads formed from a punched metal foil
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4623—Manufacturing multilayer circuits by laminating two or more circuit boards the circuit boards having internal via connections between two or more circuit layers before lamination, e.g. double-sided circuit boards
Definitions
- the present invention relates to a module in which semiconductor elements are mounted on a board, and more particularly to an unit type clip lead terminal comprising lead terminals for electrically connecting the module to the outer device.
- the invention further relates to a clip lead terminal connecting method, a lead terminal connecting board, and a method of board with lead terminals.
- Conventional clip lead terminal means to be connected to a board of a module is an unit type connecting clip lead terminal.
- This type of terminal means has a plurality of clip lead terminals aligned in the same direction and arranged in parallel with each other. The terminals are connected to each other through a tie bar and a guide member to thereby be united into one-body. Then, the unit type clip lead terminal is connected electrically to the board by sandwiching respective connecting terminals formed on an edge portion of the board by clip portions of the respective clip leads.
- the clip portion has usually a three-forked construction, then the center one portion and the both side two portions of the tree forks sandwich the edge portion of the board on which the connecting terminals are disposed. After the clip portions have been connected thereto, the respective clip lead terminals are separated by removing the tie bars and the guide members, thereby obtaining the module with the clip lead terminals.
- connecting terminals formed on the front surface of the board and connecting terminals formed on the rear surface of the board are different with respect to signals outputted therefrom.
- the connecting terminals for the front surface and the connecting terminals for the rear surface are alternately disposed on the edge portion of the board of the DIMM in order to decrease the terminal pitch by narrowing the distance between the connecting terminals.
- the clip lead terminals are constructed in such a manner that the adjacent clip portions are directed on the opposite sides, thereby preventing the adjacent clip portions from short-circuiting. That is, each of the clip portions is connected to the connecting terminal for the front surface and the connecting terminal for the rear surface of the board at the center one portion of the three forks thereof.
- the lead terminals are separated into two rows, one being connected to the connecting terminals for the front surface and the other connected to the connecting terminals for the rear surface.
- an unit type clip lead terminal is comprising a plurality of clip lead terminals, each having at one end thereof clip portions for sandwiching an end portion of a board of a module and connecting terminals formed thereon between clip members of the clip portions, to thereby be electrically connected to the connecting terminals, and having a lead portion at the other end thereof.
- the clip lead terminals are arranged so as to be spaced apart from one another in parallel with one another with leading edges of the respective clip portions aligned on a straight line, viewing from above the board.
- the lead portions are bent every other one, leading end portions of the bent lead portions and leading end portions of the non-bent lead portions are in parallel with each other viewing from a side of the board.
- the adjacent clip lead terminals are connected with each other through a connecting portion, whereby the respective clip lead terminals are united into one-body.
- the clip lead terminal for the front surface terminal (hereinafter referred to as a “front clip lead terminal”) and the clip lead terminal for the rear surface terminal (hereinafter referred to as a “rear clip lead terminal”) are united into one-body, so that both the front clip lead terminals and the rear clip lead terminals can be connected to the board at one time by one operation.
- front clip lead terminal the clip lead terminal for the front surface terminal
- rear clip lead terminal the clip lead terminal for the rear surface terminal
- the connecting portion can be made of an insulating tape.
- the connecting portions need not be cut off after the unit type clip lead terminal has been connected to the board.
- an unit type clip lead terminal comprising a plurality of first clip lead terminals for first main surface connecting terminals, and a plurality of second clip lead terminals for second main surface connecting terminals.
- Each of the first clip lead terminals has at one end thereof clip portions to be electrically connected to the first main surface connecting terminal by sandwiching an end portion of a board of a module and the first main surface connecting terminals formed thereon between clip members of the clip portions.
- the first clip lead terminal has a lead portion at the other end thereof.
- Each of the second clip lead terminals has at one end thereof clip portions electrically connected to the second main surface connecting terminal by sandwiching the end portion of the board and the second main surface connecting terminals formed thereon between clip members of the clip portions.
- the second clip lead terminal has a lead portion at the other end thereof.
- the first and second clip lead terminals are arranged so as to be spaced apart from one another in parallel with one another with leading edges of the clip portions aligned on a straight line, viewing from above the board.
- the lead portions of the first clip lead terminals are bent, and then leading end portions of the lead portions of the first clip lead terminals and leading end portions of the lead portions of the second clip lead terminals are in parallel with each other viewing from a side of the board.
- the lead portions of the first clip lead terminals and the lead portions of the second clip lead terminals, which are adjacent to each other, are connected to each other through a connecting portion at overlapping portions thereof viewing from a side of the board, whereby the first clip lead terminals and the second clip lead terminals are united into as one-body.
- the first clip lead terminal for the front surface terminal (for the first main surface connecting terminal) and the second clip lead terminal for the rear surface terminal (for the second main surface connecting terminal) are united to thereby be formed into the unit type clip lead terminal, so that both the front clip lead terminals and the rear clip lead terminals can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminals according to the first aspect of the invention.
- the connecting portion may be made of an insulating tape.
- the connecting portions need not be cut off after connecting the unit type clip lead terminal to the board.
- an unit type clip lead terminal comprising a plurality of first clip lead terminals for first main surface connecting terminals and a plurality of second clip lead terminals for second main surface connecting terminals.
- Each of the first clip lead terminals has at one end thereof clip portions to be electrically connected to the first main surface connecting terminals by sandwiching an end portion of a board of a module, and the first main surface connecting terminals formed thereon between clip members of the clip portions.
- the first clip lead terminal has a lead portion at the other end thereof.
- Each of the second clip lead terminals has at one end thereof clip portions to be electrically connected to the second main surface connecting terminals by sandwiching the end portion of the board and the second main surface connecting terminal formed thereon between clip members of the clip portions.
- the second clip lead terminal has a lead portion at the other end thereof.
- the lead portions of the first and second clip lead terminals are alternately arranged so as to be spaced apart from one another in parallel with one another with leading edges of the clip portions aligned on a straight line.
- Each of the first clip lead terminals is fixed to a first main surface of a band-like insulating spacer having substantially the same thickness as the board, and each of the second clip lead terminals is fixed to a second main surface of the insulating spacer on the opposite side of the first main surface.
- the front clip lead terminal and the rear clip lead terminal are previously united into one-body and then connected to the board, so that both the front and rear clip lead terminals can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminals according to the third aspect of the invention.
- the connecting clip lead terminals are connected to one another through the insulating spacer. Accordingly, the connecting portions need not be cut off after the unit type clip lead terminal has been connected to the board. Also, the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are connected to the opposed main surfaces of the insulating spacer, respectively, whereby the lead portions of the clip lead terminals need not be bent.
- a method of connecting clip lead terminals to a module which method comprises the steps of
- the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are previously united into one-body and then connected to the board, so that both the front and rear clip lead terminals can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting methods of the fourth aspect of the invention.
- a method of connecting clip lead terminals to a module which method comprises the steps of
- the front and rear clip lead terminals are previously united into one-body and then connected to the board, so that both the front and rear clip lead terminals can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting methods of the fifth aspect of the invention.
- a lead terminal connecting board comprising
- a multi-layer body including an insulating core layer, intermediate layers laminated on and below the core layer, respectively, and insulating layers laminated outside each of the intermediate layers, respectively;
- each of the intermediate layer being designed to receive a straight lead terminal through insertion holes formed in the intermediate layer;
- the lead terminal when the lead terminal is inserted into the insertion holes, being connected an electronic device mounted on the board through a via hole penetrating through the prepreg layer and reaching the insertion hole.
- the lead terminal connecting board has the insertion holes on the end surface of the board, so that there can be shortened the time required for connecting the clip lead terminals to DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting board of the sixth aspect of the invention.
- a seventh aspect of the invention there is provided a method of producing a board with lead terminals, which method comprises
- the multi-layer body in which the lead terminals are inserted into the insertion holes is subjected to the thermocompression bonding. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the method of producing the board with the lead terminals of the invention.
- FIG. 1 is schematic diagrams for explaining one embodiment of the invention, in which FIG. 1A is a plan view of an unit type clip lead terminal of a first embodiment according to the invention, FIG. 1B is a sectional view taken along the line I-I of FIG. 1A, and FIG. 1C is a sectional view taken along the line II-II of FIG. 1A;
- FIG. 2 is schematic diagrams for explaining another embodiment of the invention, in which FIG. 2A is a plan view of an unit type clip lead terminal of a second embodiment according to the invention, FIG. 2B is a sectional view taken along the line I-I of FIG. 2A, and FIG. 2C is a sectional view taken along the line II-II of FIG. 2A;
- FIG. 3 is schematic drawings for explaining another embodiment of the present invention, in which FIG. 3A is a plan view of an unit type clip lead terminal of a third embodiment according to the invention, FIG. 3B is a sectional view taken along the line I-I of FIG. 3A, and FIG. 3C is a sectional view taken along the line II-II of FIG. 3A;
- FIGS. 4A to 4 C are explanatory views of a clip lead terminal connecting method of a fourth embodiment according to the invention, respectively;
- FIGS. 5A to 5 C are explanatory views of a clip lead terminal connecting method of a fifth embodiment according to the invention, respectively;
- FIGS. 6A to 6 C are explanatory views of a clip lead terminal connecting method of a fifth embodiment according to the invention, respectively;
- FIG. 7 is schematic diagrams for explaining one embodiment of a lead terminal connecting board of the invention, in which FIG. 7A is a sectional view of the connecting clip lead terminal on a state where the lead terminals are not inserted into insertion holes yet, of a sixth embodiment according to the invention, FIG. 7B is a sectional view taken along the line I-I of FIG. 7A, and FIG. 7C is a sectional view taken along the line II-II of FIG. 7A;
- FIG. 8 is a sectional view of a lead terminal connecting board on a state where lead terminals are inserted into the insertion holes, of a sixth embodiment according to the invention.
- FIG. 9 is schematic diagrams for explaining one embodiment of the lead terminal connecting board of the invention, in which FIG. 9A is a plan view of the lead terminal connecting board on a state where lead terminals are inserted into the insertion holes, of a sixth embodiment according to the invention, FIG. 9B is a sectional view taken along the line I-I of FIG. 9A, and FIG. 9C is a sectional view taken along the line II-II of FIG. 9A; and
- FIGS. 10A and 10B show process views of explaining a method of producing the board with lead terminals of the seventh embodiment according to the invention, respectively.
- FIG. 1A is a plan view showing an unit type clip lead terminal of the first embodiment according to the invention
- FIG. 1B is a sectional view taken along the line I-I of FIG. 1A
- FIG. 1C is a sectional view taken along the line II-II of FIG. 1A.
- a clip portion on a second main side (rear side) surface of a board is represented by a broken line, which is not a section thereof.
- FIG. 1C a clip portion on a first main side (front side) surface of the board will be represented by a broken line, which is not a section thereof.
- FIG. 1 shows a state that connecting terminals 14 arranged on an end portion or a margin 12 c of a board 12 of a DDIM type module 10 are sandwiched between clip members or clip elements of clip portions 22 of an unit type clip lead terminal 18 .
- Front surface connecting terminals 14 a and rear surface connecting terminals 14 b as the connecting terminals 14 are formed alternately on the board 12 .
- Semiconductor elements 16 (or IC chips and other electronic components) are provided onto the board 12 .
- the unit type clip lead terminal 18 comprises a plurality of clip lead terminals 20 .
- Each of the clip portions 22 has clip members or clip elements.
- the end portion or margin 12 c of the board 12 of the module 10 and the connecting terminals 14 formed thereon are sandwiched between the clip members or clip elements.
- the clip lead terminals have at the other ends thereof a lead portion, respectively.
- the clip lead terminals 20 are arranged so as to be spaced from one another in parallel with one another with leading edges of the clip portions 22 aligned on a straight line 28 .
- Each of the clip portions 22 is of a three forked construction, in which a center clip member and two side clip members of the three forks cooperate to sandwich between the center clip member and the side clip members the end portion 12 c of the board 12 together with the connecting terminals 14 formed thereon.
- the adjacent clip portions 22 are directed to the opposite sides of the board 12 , respectively, so as to prevent the adjacent clip portions 22 from short-circuiting, that is, the center clip member of the three forks of each of the clip portions 22 alternately contacts to the front surface connecting terminal 14 a and the rear surface connecting terminal 14 b on the board 12 .
- the clip portions 22 corresponding to a plurality of first clip lead terminals 20 a for first main surface connecting terminals (for front surface terminals) are called as front clip portions 22 a and the clip portions 22 corresponding to a plurality of second clip lead terminals 20 b for second main surface connecting terminals (for rear surface terminals) are called as rear clip portions 22 b directed to opposite sides of the board 12 , respectively.
- the center clip member of the first clip lead terminal 20 a is connected to the front surface connecting terminal 14 a.
- the clip portions 22 ( 22 a and 22 b ) are fixed to the connecting terminals 14 ( 14 a and 14 b ) by soldering.
- the lead portions 24 of the clip lead terminals 20 are bent on every other one.
- the lead portions 24 of the first clip lead terminals 20 a are bent at four locations thereof, thereby forming substantially “U”-like bent portion, respectively.
- leading end portions of the bent lead portions 24 a and leading end portions of the non-bent lead portions 24 b are in parallel with each other viewing from a side of the board 12 .
- the unit type clip lead terminal 18 is of one-body construction in which the clip lead terminals 20 are connected to one another through tie bars 26 a and a guide members 26 b.
- the tie bar and the guide member are called as connecting portions 26 , respectively.
- the first clip lead terminal 20 a for the front surface terminal and the second clip lead terminal 20 b for the rear surface terminal, which are adjacent to each other, are connected with each other at middle portions of the respective clip lead terminals through the tie bar 26 a.
- the tie bar 26 a connects the clip lead terminals 20 a and 20 b with each other at their portions where the lead portions of both the clip lead terminals 20 a and 20 b are positioned on the same plane.
- the clip lead terminals 20 a and 20 b may be connected to each other at portions where the lead portions of both the clip lead terminals 20 a and 20 b are not positioned on the same plane.
- the connecting portion 26 is made of the same material as the clip lead terminals 20 and then formed continuously unitedly therewith.
- the guide member 26 b makes a connection between the adjacent second clip lead terminals 20 b for the rear surface terminal to one another at leading ends of the lead portions 24 b.
- FIG. 1B a section of the first clip lead terminal 20 a for the first main surface connecting terminal (for the front surface terminal), and shown in FIG. 1C a section of the second clip lead terminal 20 b for the second main surface connecting terminal (for the rear surface terminal).
- these clip lead terminals 20 may be made of phosphor bronze similarly to the conventional lip lead terminal.
- the first clip lead terminals 20 a for the front surface terminal and the second clip lead terminals 20 b for the rear surface terminal are united into one-body to thereby obtain an unit type or connection type or coupled type construction. Accordingly, both the clip lead terminals 20 a and 20 b can be connected to the board 12 at one time by one operation, without separately connecting both the clip lead terminals 20 a and 20 b to the board 12 . As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the first embodiment.
- FIG. 2A is a plan view showing the connecting clip lead terminal of the second embodiment according to the invention
- FIG. 2B is a sectional view taken along the line I-I of FIG. 2A
- FIG. 2C is a sectional view taken along the line II-II of FIG. 2A.
- the unit type clip lead terminal according to the second embodiment has the same construction as that of the first embodiment except that the connecting portion is formed of one insulating tape instead of the tie bars 26 a and the guide members 26 b used in the first embodiment. Accordingly, in FIG. 2, the same reference numerals denote corresponding elements as those of FIG. 1, then the detail explanation thereof will be omitted.
- the connecting portion is made of an insulating tape 30 .
- This insulating tape 30 is provided over from one end side clip lead terminal to the other end side clip lead terminal in such a direction as to cross the respective clip lead terminals 20 arranged in parallel with one another.
- this insulating tape 30 may be made of polyimide or Teflon which has an electrical insulation characteristic.
- the insulating tape 30 is fixed to all the clip lead terminals 20 by an adhesive, at their middle portions where the lead portions 24 a and 24 b of both the clip lead terminals 20 a and 20 b are positioned on the same plane.
- the tape 30 contacts with the clip lead terminals 20 on a side of a second main surface 30 b of the tape 30 . Otherwise, the insulating tape 30 may connect both the clip lead terminals 20 a and 20 b at their portions where the lead portions of both the clip lead terminals 20 a and 20 b are not positioned on the same plane.
- the unit type clip lead terminal 18 fixed to the insulating tape 30 is supported by a flat plate, etc., and then connected to the board, whereby both the clip lead terminals 20 a and 20 b can be connected to the board 12 at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the second embodiment.
- the clip lead terminals 20 are insulated with each other, the connecting portions 26 need not be cut off after connecting the unit type clip lead terminal 18 to the board 12 .
- FIG. 3A is a plan view showing the connecting clip lead terminal of the third embodiment according to the invention
- FIG. 3B is a sectional view taken along the line I-I of FIG. 3A
- FIG. 3C is a sectional view taken along the line II-II of FIG. 3A.
- the unit type clip lead terminals 34 is comprised of a plurality of first clip lead terminals 36 a for first main surface connecting terminals (for front surface terminals) 14 a, and a plurality of second clip lead terminals 36 b for second main surface connecting terminals (for rear surface terminals) 14 b. Then, the first clip lead terminal 36 a has clip portions 38 at one end thereof, and a lead portion 40 a at the other end thereof. The first clip lead terminal 36 a is electrically connected to the front surface connecting terminal 14 a. This connection is attained by sandwiching the end portion or margin 12 c of the board 12 of the module 10 and the front surface connecting terminals (front surface terminals) 14 a formed thereon, between the clip members of the clip portions 38 .
- the second clip lead terminal 36 b has clip portions 38 at one end thereof, and a lead portion 40 b at the other end thereof.
- the second clip lead terminal 36 b is electrically connected to the second surface connecting terminals 14 b.
- the connection is attained by sandwiching the end portion 12 c of the board 12 of the module 10 and the second main surface connecting terminals (rear surface terminals) 14 b formed thereon between the clip members of the clip portions 38 .
- the first clip lead terminals 36 a for the first main surface connecting terminals (front surface terminals) 14 a, and the second clip lead terminals 36 b for second main front surface connecting terminals (rear surface terminals) 14 b are arranged alternately so as to be spaced apart from one another in parallel with one another with leading edges of the clip portions 38 aligned on the straight line 28 .
- the respective first clip lead terminals 36 a are fixed by an adhesive at middle portions thereof to a first main surface 32 a of a band-like insulating spacer 32 , which has an electrical insulation characteristic, having substantially the same thickness as the board 12 .
- the respective second clip lead terminals 36 b are fixed by an adhesive at middle portions thereof to a second main surface 32 b of the insulating spacer 32 on a rear side of the first main surface 32 a.
- Lead portions 40 a of the first clip lead terminals 36 a and lead portions 40 b of the second clip lead terminals 36 b are arranged in a vertical direction of the board in parallel with one another as two rows viewing from a side of the board 12 .
- the first clip lead terminals 36 a and the second clip lead terminals 36 b are connected to each other through an insulating spacer 32 to form an united, one-body construction.
- the construction may be also called as a connection type or coupled type construction. Accordingly, both the clip lead terminals 36 a and 36 b can be connected to the board 12 at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the third embodiment.
- the unit type clip lead terminals 36 are connected to one another through the insulating spacer 32 . Accordingly, the connecting portion 32 need not be cut off after the unit type clip lead terminal 34 is connected to the board 12 . Also, the first clip lead terminals 36 a for the front surface terminals 14 a and the second clip lead terminals 36 b for the rear surface terminals 14 b are connected to the opposed main surfaces of the insulating spacer 32 , respectively, whereby the lead portion 40 of the clip lead terminal 36 need not be bent.
- FIG. 4A is an explanatory view of clip lead terminal connecting method of the fourth embodiment according to the invention
- FIG. 4B is a sectional view taken along the line I-I of FIG. 4A
- FIG. 4C is a sectional view taken along the line II-II of FIG. 4A.
- the unit type clip lead terminal 18 which has been described in the above first embodiment, is first prepared.
- the clip lead terminals 20 and the connecting terminals 14 are electrically connected to one another by sandwiching the end portion and the connecting terminals 14 formed on the board 12 between clip members 22 a and 22 b of the clip portions 22 .
- portions of the tie bars 26 a and the guide members 26 b as the connecting portions 26 are cut off by the use of the die, etc.
- the cut is done along the broken lines c in FIGS. 1A and 1C.
- the broken lines c are illustrated so as to be shifted from the actual cut lines.
- FIGS. 4A to 4 C a state in which the tie bars 26 a and the guide members 26 b are removed.
- the first clip lead terminals 20 a for the front surface terminals and the second clip lead terminals 20 b for the rear surface terminals are previously united as one-body through the connecting portions 26 , so that both the clip lead terminals 20 a and 20 b can be connected to the board 12 at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting method according to the fourth embodiment.
- FIG. 5A is a plan view showing an unit type clip lead terminal in which the connecting portion is not cut yet
- FIG. 5B is a sectional view taken along the line I-I of FIG. 5A
- FIG. 5C is a sectional view taken along the line II-II of FIG. 5A
- FIG. 6A is a plan view showing a clip lead terminal in which the connecting portion has been cut
- FIG. 6B is a sectional view taken along the line I-I of FIG. 6A
- FIG. 6C is a sectional view taken along the line II-II of FIG. 6A.
- an unit type clip lead terminal 44 is first prepared.
- This unit type clip lead terminal 44 has a plurality of clip lead terminals 46 .
- Each of the clip lead terminals 46 has clip portions 48 at one end thereof and a lead portion 50 at the other end thereof.
- This clip portions 48 are electrically connected to the connecting terminal 14 by sandwiching the end portion 12 c of the board 12 of the module 10 and the connecting portions 14 formed on the end portion 12 c between the clip members 48 a and 48 b of the portions 48 .
- each of the clip portions 48 is of a three-forked construction, in which a center clip member 48 a and two side clip members 48 b of the three forks sandwich therebetween the edge portion 12 c of the board 12 and the connecting terminals 14 are provided thereon.
- the adjacent clip portions 22 are directed to the opposite sides of the board 12 , respectively, so as to prevent the adjacent clip portions 22 from short-circuiting.
- the respective clip lead terminals 46 are arranged on the same plane so as to be spaced from one another in parallel with one another with the leading edges of the clip portions 48 aligned on the straight line 28 , viewing from above the board.
- the clip lead terminals 46 are connected to one another through tie bars 42 a and guide members 42 b as connecting portions 26 , respectively, to thereby be united into one-body, thus forming an unit type or connection type or coupled type construction.
- the tie bar 42 a connects the first clip lead terminal 46 a for the front surface terminal and the second clip lead terminal 46 b for the rear surface terminal at middle portions of the clip lead terminals.
- the guide member 42 b connects both the adjacent clip lead terminals 46 a and 46 b at their lead portions 40 . That is, the connecting portions 42 are made of the same material as the clip lead terminals 46 then formed continuously unitedly therewith.
- the clip lead terminals 46 and the connecting terminals 14 are connected electrically to each other by sandwiching the end portion 12 and the connecting terminals 14 formed thereon between the clip members 48 a and 48 b of the clip portions 48 (FIGS. 5A to 5 C).
- the connecting terminals 14 of the board 12 are comprised of the front surface connecting terminals 14 a and rear surface connecting terminals 14 b, which are arranged alternately.
- portions of the tie bars 26 a and the guide members 26 b as the connecting portions 26 are cut off by the use of the die, etc., then the respective clip lead terminals 46 are separated at least electrically.
- the cut is done along the broken lines c in FIGS. 5A to 5 C. Incidentally, in FIG. 5, the broken lines c are illustrated so as to be shifted from the actual lines.
- the lead portions 50 of the clip lead terminals 46 are bent on every other one. On this occasion, the lead portions 50 a of the first clip lead terminals 46 a are bent at four locations thereof, thereby forming substantially “U”-like bent portion, respectively.
- the lead portions 50 a are bent, then the bent lead portions 50 a and the non-bent lead portions 50 b are made in parallel with each other as two rows viewing from a side of the board. Also, it is preferable that the respective leading ends of the lead portion 50 a and the lead portion 50 b are aligned on the same level (FIGS. 6A to 6 C).
- the first clip lead terminal 46 a and the second clip lead terminal 46 b are previously united as one-body through the connecting portion 42 then connected to the board 12 , so that both the clip lead terminals 46 a and 46 b can be connected to the board 12 at one time by one operation.
- the clip lead terminal can be connected easily to the board of the module by using the clip lead terminal connecting method according to the fifth embodiment.
- FIG. 7A is a diagram showing cross section of a lead terminal connecting board with lead terminals not inserted into insertion holes yet
- FIG. 7B is a diagram showing cross section taken along the line A-A of FIG. 7A.
- FIG. 8 is a diagram showing cross section of a lead terminal connecting board on a state where lead terminals are inserted into insertion holes.
- FIG. 9A is a plan view of the lead terminal connecting board on a state where the lead terminals are inserted into the insertion holes
- FIG. 9B is a side view of the lead terminal connecting board shown in FIG. 9A.
- the clip lead terminal connecting board according to the sixth embodiment has a multi-layer body or a lamination or stacked layer body 58 which is comprised of an insulating core layer 52 , intermediate layers made of a copper formed or laminated on and below the core layer 54 , and insulating prepreg layers 56 formed or laminated outside each of the intermediate layer 54 .
- the intermediate layer 54 has insertion holes 62 into each of which a lead terminal 60 is inserted.
- the prepreg layer 56 has a via hole 64 , being formed therethrough and reaching the insertion hole 62 .
- surface copper layer 66 are formed on surfaces of the prepreg layer 56 .
- another copper layer 66 a are formed on the inner surfaces of the insertion holes 62 and the inner surfaces of the via holes 64 in order to raise the reliability for the connection between the lead terminal 60 and the lamination layer body 58 .
- a conductive adhesive 68 is filled in the via hole 64 .
- the lead terminal 60 and the surface copper layer 66 are connected electrically through the conductive adhesive 68 and the copper layer 66 a (FIG. 8A).
- electronic components 16 of a module 70 shown in FIGS. 9A and 9B are connected electrically to the surface copper layer 66 .
- the lead terminal 60 is shaped in a straight line and becomes thinner toward the leading end on an insertion side to form an offset nose.
- the offset nose structure prevents the lead terminal 60 from being excessively inserted into the insertion hole 62 .
- the lead terminal connecting board according to the sixth embodiment has the insertion holes 62 arranged in upper and lower rows on an end face of the board comprised of the lamination layer body 58 . Therefore, due to the insertion of the lead terminals into the insertion holes 62 , there can be shortened the time required for connecting the clip lead terminals to DIMM. Accordingly, the clip lead terminal can be connected easily to the board of the module by using the clip lead terminal connecting board according to the sixth embodiment.
- FIG. 10 is comprised of FIGS. 10A and 10B, which show process views of explaining a method of producing the board with the lead terminals according to the seventh embodiment.
- intermediate layers 54 having insertion holes 62 into which lead terminals 60 are inserted along the intermediate layers 54 are formed or laminated on and below an insulating core layer 52 , respectively.
- copper layers 66 a are formed on the inner surfaces of the insertion holes or recesses 62 in order to raise the reliability for the connection between the lead terminal 60 and the laminated layer 58 .
- the lead terminals 60 are inserted into the insertion holes or recesses 62 .
- Prepreg layers 56 have formed therethrough via holes 64 each penetrating through the prepreg layers 56 and reaching the insertion holes 62 , respectively.
- the prepreg layers 56 are formed or laminated outside each of the intermediate layer 54 .
- the surface copper layers 66 are provided on the surfaces of the prepreg layers 56 and the inner surface of the via holes 64 .
- the pressure and heat are applied to the lamination layer body 58 constituted by the core layer 52 , the intermediate layers 54 and the prepreg layers 56 , from outside the prepreg layers 56 so as to attain the thermocompression-bonding therebetween.
- the thermocompression-bonding is carried out by pressing e.g. the soldering iron the prepreg layer 56 under the temperature condition of about 180° C. or a temperature higher than 180° C. Due to this thermocompression bonding, there can be obtained the board with the lead terminal shown in FIG. 9.
- the first clip lead terminal for the front surface terminal (for the first main surface connecting terminal) and the second clip lead terminal for the rear surface terminal (for the second main surface connecting terminal) are united to form an unit type clip lead terminal, so that both the clip lead terminals for the front surface terminal and the clip lead terminals for the rear surface terminal can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to present invention.
- the connecting portions need not be cut off after the unit type clip lead terminal has been connected to the board.
- the clip lead terminal for the front surface terminal (for the first main surface connecting terminal) and the clip lead terminal for the rear surface terminal (for the second main surface connecting terminal) are united to thereby obtain the unit type clip lead terminal, so that both the clip lead terminals for the front surface terminal and the clip lead terminals for the rear surface terminal can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminals according to the third aspect of the invention.
- the clip lead terminals are connected to each other through an insulating spacer. Accordingly, the connecting portion need not be cut off after the unit type clip lead terminal has been connected to the board. Also, the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are connected to the opposed main surfaces of the insulating spacer, respectively, whereby the lead portions of the clip lead terminals need not be bent.
- the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are previously united into one-body and then connected to the board, so that both the clip lead terminals for the front surface terminal and the clip lead terminals for the rear surface terminal can be connected to the board at one time by one operation.
- the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting methods of the fourth aspect and the fifth aspect of the invention.
- the lead terminal connecting board has the insertion holes on the end surface of the board, so that there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting board of the sixth aspect of the invention.
- the lamination layer body in which the lead terminals are inserted into the insertion holes is subjected to the thermocompression bonding, so that there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the method of producing the board with the lead terminals of the seventh aspect of the invention.
Abstract
Description
- 1. Field of the Invention
- The present invention relates to a module in which semiconductor elements are mounted on a board, and more particularly to an unit type clip lead terminal comprising lead terminals for electrically connecting the module to the outer device. The invention further relates to a clip lead terminal connecting method, a lead terminal connecting board, and a method of board with lead terminals.
- 2. Description of the Related Art
- Conventional clip lead terminal means to be connected to a board of a module is an unit type connecting clip lead terminal. This type of terminal means has a plurality of clip lead terminals aligned in the same direction and arranged in parallel with each other. The terminals are connected to each other through a tie bar and a guide member to thereby be united into one-body. Then, the unit type clip lead terminal is connected electrically to the board by sandwiching respective connecting terminals formed on an edge portion of the board by clip portions of the respective clip leads. The clip portion has usually a three-forked construction, then the center one portion and the both side two portions of the tree forks sandwich the edge portion of the board on which the connecting terminals are disposed. After the clip portions have been connected thereto, the respective clip lead terminals are separated by removing the tie bars and the guide members, thereby obtaining the module with the clip lead terminals.
- In the DIMM (Dual Inline Memory Module), connecting terminals formed on the front surface of the board and connecting terminals formed on the rear surface of the board are different with respect to signals outputted therefrom. The connecting terminals for the front surface and the connecting terminals for the rear surface are alternately disposed on the edge portion of the board of the DIMM in order to decrease the terminal pitch by narrowing the distance between the connecting terminals.
- However, when the pitch between the connecting terminals are decreased, there is raised a fear that the clip portions of the adjacent clip lead terminals are short-circuited. Accordingly, in the DIMM, the clip lead terminals are constructed in such a manner that the adjacent clip portions are directed on the opposite sides, thereby preventing the adjacent clip portions from short-circuiting. That is, each of the clip portions is connected to the connecting terminal for the front surface and the connecting terminal for the rear surface of the board at the center one portion of the three forks thereof.
- Also, in the DIMM, since the connecting terminal for the front surface and the connecting terminal for the rear surface board are different with respect to the signals outputted therefrom, the lead terminals are separated into two rows, one being connected to the connecting terminals for the front surface and the other connected to the connecting terminals for the rear surface.
- Therefore, in a case where the clip lead terminals are connected to the DIMM, it is not appropriate to use the conventional unit type clip lead terminal used for the SIMM (Single Inline Memory Module), which is made narrow in pitch. Accordingly, as for a DIMM, there are prepared two unit type the clip lead terminals, one for the front surface and the other for the rear surface. Then, one of the two unit type clip lead terminals is separately connected to the connecting terminals for the front surface and the other to the connecting terminals for the rear surface of the DIMM.
- However, since the two unit type clip lead terminals for the front surface and for the rear surface are separately connected to the DIMM, there is a problem that the working time for the connection is increased compared with a case where only one connecting clip lead terminal is connected to the SIMM.
- It is therefore an object of the present invention to provide a technique of connecting easily lead terminals to a board of a module.
- According to a first aspect of the invention, there is provided an unit type clip lead terminal is comprising a plurality of clip lead terminals, each having at one end thereof clip portions for sandwiching an end portion of a board of a module and connecting terminals formed thereon between clip members of the clip portions, to thereby be electrically connected to the connecting terminals, and having a lead portion at the other end thereof. The clip lead terminals are arranged so as to be spaced apart from one another in parallel with one another with leading edges of the respective clip portions aligned on a straight line, viewing from above the board. The lead portions are bent every other one, leading end portions of the bent lead portions and leading end portions of the non-bent lead portions are in parallel with each other viewing from a side of the board. And the adjacent clip lead terminals are connected with each other through a connecting portion, whereby the respective clip lead terminals are united into one-body.
- According to the above unit type clip lead terminal of the present invention, the clip lead terminal for the front surface terminal (hereinafter referred to as a “front clip lead terminal”) and the clip lead terminal for the rear surface terminal (hereinafter referred to as a “rear clip lead terminal”) are united into one-body, so that both the front clip lead terminals and the rear clip lead terminals can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the invention.
- Also, in the unit type clip lead terminal according to the invention, the connecting portion can be made of an insulating tape. By thus using the insulating tape as the connecting portion, the connecting portions need not be cut off after the unit type clip lead terminal has been connected to the board.
- According to a second aspect of the invention, there is provided an unit type clip lead terminal comprising a plurality of first clip lead terminals for first main surface connecting terminals, and a plurality of second clip lead terminals for second main surface connecting terminals. Each of the first clip lead terminals has at one end thereof clip portions to be electrically connected to the first main surface connecting terminal by sandwiching an end portion of a board of a module and the first main surface connecting terminals formed thereon between clip members of the clip portions. The first clip lead terminal has a lead portion at the other end thereof. Each of the second clip lead terminals has at one end thereof clip portions electrically connected to the second main surface connecting terminal by sandwiching the end portion of the board and the second main surface connecting terminals formed thereon between clip members of the clip portions. The second clip lead terminal has a lead portion at the other end thereof.
- The first and second clip lead terminals are arranged so as to be spaced apart from one another in parallel with one another with leading edges of the clip portions aligned on a straight line, viewing from above the board. The lead portions of the first clip lead terminals are bent, and then leading end portions of the lead portions of the first clip lead terminals and leading end portions of the lead portions of the second clip lead terminals are in parallel with each other viewing from a side of the board. The lead portions of the first clip lead terminals and the lead portions of the second clip lead terminals, which are adjacent to each other, are connected to each other through a connecting portion at overlapping portions thereof viewing from a side of the board, whereby the first clip lead terminals and the second clip lead terminals are united into as one-body.
- According to the unit type clip lead terminal of the invention, the first clip lead terminal for the front surface terminal (for the first main surface connecting terminal) and the second clip lead terminal for the rear surface terminal (for the second main surface connecting terminal) are united to thereby be formed into the unit type clip lead terminal, so that both the front clip lead terminals and the rear clip lead terminals can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminals according to the first aspect of the invention.
- Also, in the unit type clip lead terminal according to the invention, the connecting portion may be made of an insulating tape. By thus using the insulating tape as the connecting portion, the connecting portions need not be cut off after connecting the unit type clip lead terminal to the board.
- Further, according to a third aspect of the invention, there is provided an unit type clip lead terminal comprising a plurality of first clip lead terminals for first main surface connecting terminals and a plurality of second clip lead terminals for second main surface connecting terminals. Each of the first clip lead terminals has at one end thereof clip portions to be electrically connected to the first main surface connecting terminals by sandwiching an end portion of a board of a module, and the first main surface connecting terminals formed thereon between clip members of the clip portions. The first clip lead terminal has a lead portion at the other end thereof. Each of the second clip lead terminals has at one end thereof clip portions to be electrically connected to the second main surface connecting terminals by sandwiching the end portion of the board and the second main surface connecting terminal formed thereon between clip members of the clip portions. The second clip lead terminal has a lead portion at the other end thereof. The lead portions of the first and second clip lead terminals are alternately arranged so as to be spaced apart from one another in parallel with one another with leading edges of the clip portions aligned on a straight line. Each of the first clip lead terminals is fixed to a first main surface of a band-like insulating spacer having substantially the same thickness as the board, and each of the second clip lead terminals is fixed to a second main surface of the insulating spacer on the opposite side of the first main surface.
- According to the unit type clip lead terminal of the invention, the front clip lead terminal and the rear clip lead terminal are previously united into one-body and then connected to the board, so that both the front and rear clip lead terminals can be connected to the board at one time by one operation. As a result, there can be shortened the time required for unit type the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminals according to the third aspect of the invention.
- Furthermore, according to the unit type clip lead terminal of the invention, the connecting clip lead terminals are connected to one another through the insulating spacer. Accordingly, the connecting portions need not be cut off after the unit type clip lead terminal has been connected to the board. Also, the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are connected to the opposed main surfaces of the insulating spacer, respectively, whereby the lead portions of the clip lead terminals need not be bent.
- According to a fourth aspect of the invention, there is provided a method of connecting clip lead terminals to a module, which method comprises the steps of
- preparing an unit type clip lead terminal wherein a plurality of clip lead terminals, each having at one end thereof clip portions for sandwiching an end portion of a board of a module and connecting terminals formed thereon between clip members of the clip portions to thereby be electrically connected to said connecting terminals, and having a leading portion at the other end thereof, are arranged so as to be spaced apart from one another in parallel with one another with leading edges of said clip portions aligned on a straight line, viewing from above said board, said lead portions are bent every other one, leading end portions of said bent lead portions and lead end portions of said non-bent portions are in parallel with each other viewing from a side of said board, and said adjacent clip lead terminals are connected with each other at overlapping portions thereof viewing from a side of said board through a connecting portion, whereby said respective clip lead terminals are united into one-body;
- electrically connecting said respective clip portions with said connecting terminals by sandwiching said end portion of said board between the clip members of said respective clip portions, respectively; and
- separating said respective clip lead terminals by removing said connecting portion, after said connection.
- According to the clip lead terminal connecting method of the invention, the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are previously united into one-body and then connected to the board, so that both the front and rear clip lead terminals can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting methods of the fourth aspect of the invention.
- According to a fifth aspect of the invention, there is provided a method of connecting clip lead terminals to a module, which method comprises the steps of
- preparing an unit type clip lead terminal wherein a plurality of clip lead terminals, each having at one end thereof clip portions for sandwiching an end portion of a board of a module and connecting terminals formed thereon between clip members of the clip portions to thereby be electrically connected to said connecting terminals, and having a lead portion at the other end thereof, are arranged so as to be spaced apart from one another in parallel with one another with leading edges of said clip portions aligned on a straight line, viewing from above said board, and said adjacent clip lead terminals are connected with each other through a connecting portion, whereby said respective clip lead terminals are united into one-body;
- electrically connecting said respective clip portions with said connecting terminals by sandwiching said end portion by said respective clip portions, respectively;
- separating said respective clip lead terminals by removing said connecting portion, after said connection; and
- bending said lead portions of said separated clip lead terminals every other one in such a manner that leading end portions of said bent lead portions and leading end portions of said non-bent lead portions are in parallel with each other viewing from a side of said board.
- According to the clip lead terminal connecting method of a fifth aspect of the invention, the front and rear clip lead terminals are previously united into one-body and then connected to the board, so that both the front and rear clip lead terminals can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting methods of the fifth aspect of the invention.
- According to a sixth aspect of the invention, there is provided a lead terminal connecting board comprising
- a multi-layer body including an insulating core layer, intermediate layers laminated on and below the core layer, respectively, and insulating layers laminated outside each of the intermediate layers, respectively;
- insertion holes, each of the intermediate layer being designed to receive a straight lead terminal through insertion holes formed in the intermediate layer; and
- the lead terminal, when the lead terminal is inserted into the insertion holes, being connected an electronic device mounted on the board through a via hole penetrating through the prepreg layer and reaching the insertion hole.
- According to the sixth aspect of the invention, the lead terminal connecting board has the insertion holes on the end surface of the board, so that there can be shortened the time required for connecting the clip lead terminals to DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting board of the sixth aspect of the invention.
- According to a seventh aspect of the invention, there is provided a method of producing a board with lead terminals, which method comprises
- laminating intermediate layers each having formed therein insertion holes in which lead terminals are inserted along the intermediate layer, on and below an insulating core layer;
- inserting straight lead terminals into the insertion holes, respectively;
- laminating insulating prepreg layers having formed therethrough via holes reaching the insertion hole outside the respective intermediate layers; and
- applying a pressure to a multi-layer body comprised of the core layer, the intermediate layers and the prepreg layers, from outside the prepreg layers, to thermocompression-bond the core layer, the intermediate layers, the lead terminals and the prepreg layers.
- According to the method of producing the board with the lead terminals of the seventh aspect of the invention, the multi-layer body in which the lead terminals are inserted into the insertion holes is subjected to the thermocompression bonding. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the method of producing the board with the lead terminals of the invention.
- The foregoing and other objects, features and advantages of the present invention will be better understood from the following description taken in connection with accompanying drawings.
- FIG. 1 is schematic diagrams for explaining one embodiment of the invention, in which FIG. 1A is a plan view of an unit type clip lead terminal of a first embodiment according to the invention, FIG. 1B is a sectional view taken along the line I-I of FIG. 1A, and FIG. 1C is a sectional view taken along the line II-II of FIG. 1A;
- FIG. 2 is schematic diagrams for explaining another embodiment of the invention, in which FIG. 2A is a plan view of an unit type clip lead terminal of a second embodiment according to the invention, FIG. 2B is a sectional view taken along the line I-I of FIG. 2A, and FIG. 2C is a sectional view taken along the line II-II of FIG. 2A;
- FIG. 3 is schematic drawings for explaining another embodiment of the present invention, in which FIG. 3A is a plan view of an unit type clip lead terminal of a third embodiment according to the invention, FIG. 3B is a sectional view taken along the line I-I of FIG. 3A, and FIG. 3C is a sectional view taken along the line II-II of FIG. 3A;
- FIGS. 4A to4C are explanatory views of a clip lead terminal connecting method of a fourth embodiment according to the invention, respectively;
- FIGS. 5A to5C are explanatory views of a clip lead terminal connecting method of a fifth embodiment according to the invention, respectively;
- FIGS. 6A to6C are explanatory views of a clip lead terminal connecting method of a fifth embodiment according to the invention, respectively;
- FIG. 7 is schematic diagrams for explaining one embodiment of a lead terminal connecting board of the invention, in which FIG. 7A is a sectional view of the connecting clip lead terminal on a state where the lead terminals are not inserted into insertion holes yet, of a sixth embodiment according to the invention, FIG. 7B is a sectional view taken along the line I-I of FIG. 7A, and FIG. 7C is a sectional view taken along the line II-II of FIG. 7A;
- FIG. 8 is a sectional view of a lead terminal connecting board on a state where lead terminals are inserted into the insertion holes, of a sixth embodiment according to the invention;
- FIG. 9 is schematic diagrams for explaining one embodiment of the lead terminal connecting board of the invention, in which FIG. 9A is a plan view of the lead terminal connecting board on a state where lead terminals are inserted into the insertion holes, of a sixth embodiment according to the invention, FIG. 9B is a sectional view taken along the line I-I of FIG. 9A, and FIG. 9C is a sectional view taken along the line II-II of FIG. 9A; and
- FIGS. 10A and 10B show process views of explaining a method of producing the board with lead terminals of the seventh embodiment according to the invention, respectively.
- The inventions will now be described hereinbelow with reference to the drawings showing respective embodiments. Incidentally, the drawings to be referred show merely schematic arrangements of the respective constituent elements on such a level that the inventions can be understood. Accordingly, these inventions are not limited to the illustrated embodiments.
- First Embodiment
- A connecting clip lead terminal of a first embodiment according to the invention will be described with reference to FIG. 1, in which FIG. 1A is a plan view showing an unit type clip lead terminal of the first embodiment according to the invention, FIG. 1B is a sectional view taken along the line I-I of FIG. 1A, and FIG. 1C is a sectional view taken along the line II-II of FIG. 1A. Also, in FIG. 1B, a clip portion on a second main side (rear side) surface of a board is represented by a broken line, which is not a section thereof. Then, in FIG. 1C, a clip portion on a first main side (front side) surface of the board will be represented by a broken line, which is not a section thereof.
- Further, FIG. 1 shows a state that connecting
terminals 14 arranged on an end portion or amargin 12 c of aboard 12 of aDDIM type module 10 are sandwiched between clip members or clip elements ofclip portions 22 of an unit typeclip lead terminal 18. Frontsurface connecting terminals 14 a and rearsurface connecting terminals 14 b as the connectingterminals 14 are formed alternately on theboard 12. Semiconductor elements 16 (or IC chips and other electronic components) are provided onto theboard 12. - The unit type
clip lead terminal 18 according to this embodiment comprises a plurality ofclip lead terminals 20. Each of theclip portions 22 has clip members or clip elements. The end portion ormargin 12 c of theboard 12 of themodule 10 and the connectingterminals 14 formed thereon are sandwiched between the clip members or clip elements. The clip lead terminals have at the other ends thereof a lead portion, respectively. Theclip lead terminals 20 are arranged so as to be spaced from one another in parallel with one another with leading edges of theclip portions 22 aligned on astraight line 28. Each of theclip portions 22 is of a three forked construction, in which a center clip member and two side clip members of the three forks cooperate to sandwich between the center clip member and the side clip members theend portion 12 c of theboard 12 together with the connectingterminals 14 formed thereon. On this occasion, theadjacent clip portions 22 are directed to the opposite sides of theboard 12, respectively, so as to prevent theadjacent clip portions 22 from short-circuiting, that is, the center clip member of the three forks of each of theclip portions 22 alternately contacts to the frontsurface connecting terminal 14 a and the rearsurface connecting terminal 14 b on theboard 12. - In FIG. 1A, the
clip portions 22 corresponding to a plurality of firstclip lead terminals 20 a for first main surface connecting terminals (for front surface terminals) are called asfront clip portions 22 a and theclip portions 22 corresponding to a plurality of secondclip lead terminals 20 b for second main surface connecting terminals (for rear surface terminals) are called asrear clip portions 22 b directed to opposite sides of theboard 12, respectively. The center clip member of the firstclip lead terminal 20 a is connected to the frontsurface connecting terminal 14 a. The clip portions 22 (22 a and 22 b) are fixed to the connecting terminals 14 (14 a and 14 b) by soldering. - Besides, the
lead portions 24 of theclip lead terminals 20 are bent on every other one. On this occasion, thelead portions 24 of the firstclip lead terminals 20 a are bent at four locations thereof, thereby forming substantially “U”-like bent portion, respectively. Then, leading end portions of thebent lead portions 24 a and leading end portions of thenon-bent lead portions 24 b are in parallel with each other viewing from a side of theboard 12. - Furthermore, the unit type
clip lead terminal 18 is of one-body construction in which theclip lead terminals 20 are connected to one another through tie bars 26 a and aguide members 26 b. The tie bar and the guide member are called as connectingportions 26, respectively. The firstclip lead terminal 20 a for the front surface terminal and the secondclip lead terminal 20 b for the rear surface terminal, which are adjacent to each other, are connected with each other at middle portions of the respective clip lead terminals through thetie bar 26 a. In this embodiment, thetie bar 26 a connects theclip lead terminals clip lead terminals clip lead terminals clip lead terminals portion 26 is made of the same material as theclip lead terminals 20 and then formed continuously unitedly therewith. - The
guide member 26 b makes a connection between the adjacent secondclip lead terminals 20 b for the rear surface terminal to one another at leading ends of thelead portions 24 b. - Furthermore, there is shown in FIG. 1B a section of the first
clip lead terminal 20 a for the first main surface connecting terminal (for the front surface terminal), and shown in FIG. 1C a section of the secondclip lead terminal 20 b for the second main surface connecting terminal (for the rear surface terminal). Also, theseclip lead terminals 20 may be made of phosphor bronze similarly to the conventional lip lead terminal. - As described above, according to the unit type clip lead terminal of the first embodiment, the first
clip lead terminals 20 a for the front surface terminal and the secondclip lead terminals 20 b for the rear surface terminal are united into one-body to thereby obtain an unit type or connection type or coupled type construction. Accordingly, both theclip lead terminals board 12 at one time by one operation, without separately connecting both theclip lead terminals board 12. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the first embodiment. - Second Embodiment
- An unit type clip lead terminal of a second embodiment according to the invention will be described with reference to FIG. 2, in which FIG. 2A is a plan view showing the connecting clip lead terminal of the second embodiment according to the invention, FIG. 2B is a sectional view taken along the line I-I of FIG. 2A, and FIG. 2C is a sectional view taken along the line II-II of FIG. 2A.
- The unit type clip lead terminal according to the second embodiment has the same construction as that of the first embodiment except that the connecting portion is formed of one insulating tape instead of the tie bars26 a and the
guide members 26 b used in the first embodiment. Accordingly, in FIG. 2, the same reference numerals denote corresponding elements as those of FIG. 1, then the detail explanation thereof will be omitted. - In the unit type
clip lead terminal 18 according to the second embodiment, the connecting portion is made of an insulatingtape 30. This insulatingtape 30 is provided over from one end side clip lead terminal to the other end side clip lead terminal in such a direction as to cross the respectiveclip lead terminals 20 arranged in parallel with one another. Also, this insulatingtape 30 may be made of polyimide or Teflon which has an electrical insulation characteristic. - The insulating
tape 30 is fixed to all theclip lead terminals 20 by an adhesive, at their middle portions where thelead portions clip lead terminals tape 30 contacts with theclip lead terminals 20 on a side of a secondmain surface 30 b of thetape 30. Otherwise, the insulatingtape 30 may connect both theclip lead terminals clip lead terminals - Then, the unit type
clip lead terminal 18 fixed to the insulatingtape 30 is supported by a flat plate, etc., and then connected to the board, whereby both theclip lead terminals board 12 at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the second embodiment. - Furthermore, by using the insulating
tape 30 as the connecting portion, theclip lead terminals 20 are insulated with each other, the connectingportions 26 need not be cut off after connecting the unit typeclip lead terminal 18 to theboard 12. - Third Embodiment
- An unit type clip lead terminal of a third embodiment according to the invention will be described with reference to FIG. 3, in which FIG. 3A is a plan view showing the connecting clip lead terminal of the third embodiment according to the invention, FIG. 3B is a sectional view taken along the line I-I of FIG. 3A, and FIG. 3C is a sectional view taken along the line II-II of FIG. 3A.
- The unit type
clip lead terminals 34 according to the third embodiment is comprised of a plurality of firstclip lead terminals 36 a for first main surface connecting terminals (for front surface terminals) 14 a, and a plurality of secondclip lead terminals 36 b for second main surface connecting terminals (for rear surface terminals) 14 b. Then, the firstclip lead terminal 36 a hasclip portions 38 at one end thereof, and alead portion 40 a at the other end thereof. The firstclip lead terminal 36 a is electrically connected to the frontsurface connecting terminal 14 a. This connection is attained by sandwiching the end portion ormargin 12 c of theboard 12 of themodule 10 and the front surface connecting terminals (front surface terminals) 14 a formed thereon, between the clip members of theclip portions 38. - Besides, the second
clip lead terminal 36 b hasclip portions 38 at one end thereof, and alead portion 40 b at the other end thereof. The secondclip lead terminal 36 b is electrically connected to the secondsurface connecting terminals 14 b. The connection is attained by sandwiching theend portion 12 c of theboard 12 of themodule 10 and the second main surface connecting terminals (rear surface terminals) 14 b formed thereon between the clip members of theclip portions 38. - The first
clip lead terminals 36 a for the first main surface connecting terminals (front surface terminals) 14 a, and the secondclip lead terminals 36 b for second main front surface connecting terminals (rear surface terminals) 14 b are arranged alternately so as to be spaced apart from one another in parallel with one another with leading edges of theclip portions 38 aligned on thestraight line 28. - The respective first
clip lead terminals 36 a are fixed by an adhesive at middle portions thereof to a firstmain surface 32 a of a band-like insulatingspacer 32, which has an electrical insulation characteristic, having substantially the same thickness as theboard 12. The respective secondclip lead terminals 36 b are fixed by an adhesive at middle portions thereof to a secondmain surface 32 b of the insulatingspacer 32 on a rear side of the firstmain surface 32 a. - Lead
portions 40 a of the firstclip lead terminals 36 a andlead portions 40 b of the secondclip lead terminals 36 b are arranged in a vertical direction of the board in parallel with one another as two rows viewing from a side of theboard 12. - As described above, according to the unit type clip lead terminal of the third embodiment, the first
clip lead terminals 36 a and the secondclip lead terminals 36 b are connected to each other through an insulatingspacer 32 to form an united, one-body construction. The construction may be also called as a connection type or coupled type construction. Accordingly, both theclip lead terminals board 12 at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to the third embodiment. - Furthermore, according to the unit type clip lead terminal of the third embodiment, the unit type
clip lead terminals 36 are connected to one another through the insulatingspacer 32. Accordingly, the connectingportion 32 need not be cut off after the unit typeclip lead terminal 34 is connected to theboard 12. Also, the firstclip lead terminals 36 a for thefront surface terminals 14 a and the secondclip lead terminals 36 b for therear surface terminals 14 b are connected to the opposed main surfaces of the insulatingspacer 32, respectively, whereby thelead portion 40 of theclip lead terminal 36 need not be bent. - Fourth Embodiment
- A clip lead terminal connecting method of a fourth embodiment according to the invention will be described with reference to FIG. 1, and FIG. 4. FIG. 4A is an explanatory view of clip lead terminal connecting method of the fourth embodiment according to the invention, FIG. 4B is a sectional view taken along the line I-I of FIG. 4A, and FIG. 4C is a sectional view taken along the line II-II of FIG. 4A.
- The unit type
clip lead terminal 18, which has been described in the above first embodiment, is first prepared. - The
clip lead terminals 20 and the connectingterminals 14 are electrically connected to one another by sandwiching the end portion and the connectingterminals 14 formed on theboard 12 betweenclip members clip portions 22. - Next, after the above connection, portions of the tie bars26 a and the
guide members 26 b as the connectingportions 26 are cut off by the use of the die, etc. The cut is done along the broken lines c in FIGS. 1A and 1C. Incidentally, in FIG. 1, the broken lines c are illustrated so as to be shifted from the actual cut lines. Then, there are shown in FIGS. 4A to 4C a state in which the tie bars 26 a and theguide members 26 b are removed. - As described above, according to the clip lead terminal connecting method of the fourth embodiment, the first
clip lead terminals 20 a for the front surface terminals and the secondclip lead terminals 20 b for the rear surface terminals are previously united as one-body through the connectingportions 26, so that both theclip lead terminals board 12 at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting method according to the fourth embodiment. - Fifth Embodiment
- Another clip lead terminal connecting method of a fifth embodiment according to the invention will be described with reference to FIG. 5, and FIG. 6, which are explanatory views of another clip lead connecting method of the fifth embodiment according to the invention. FIG. 5A is a plan view showing an unit type clip lead terminal in which the connecting portion is not cut yet, FIG. 5B is a sectional view taken along the line I-I of FIG. 5A, and FIG. 5C is a sectional view taken along the line II-II of FIG. 5A. FIG. 6A is a plan view showing a clip lead terminal in which the connecting portion has been cut, FIG. 6B is a sectional view taken along the line I-I of FIG. 6A, and FIG. 6C is a sectional view taken along the line II-II of FIG. 6A.
- In the clip lead terminal connecting method according to the fifth embodiment, an unit type
clip lead terminal 44 is first prepared. This unit typeclip lead terminal 44 has a plurality ofclip lead terminals 46. Each of theclip lead terminals 46 hasclip portions 48 at one end thereof and alead portion 50 at the other end thereof. Thisclip portions 48 are electrically connected to the connectingterminal 14 by sandwiching theend portion 12 c of theboard 12 of themodule 10 and the connectingportions 14 formed on theend portion 12 c between theclip members portions 48. Further, each of theclip portions 48 is of a three-forked construction, in which acenter clip member 48 a and twoside clip members 48 b of the three forks sandwich therebetween theedge portion 12 c of theboard 12 and the connectingterminals 14 are provided thereon. On this occasion, theadjacent clip portions 22 are directed to the opposite sides of theboard 12, respectively, so as to prevent theadjacent clip portions 22 from short-circuiting. - The respective
clip lead terminals 46 are arranged on the same plane so as to be spaced from one another in parallel with one another with the leading edges of theclip portions 48 aligned on thestraight line 28, viewing from above the board. - Moreover, the
clip lead terminals 46 are connected to one another through tie bars 42 a andguide members 42 b as connectingportions 26, respectively, to thereby be united into one-body, thus forming an unit type or connection type or coupled type construction. Thetie bar 42 a connects the firstclip lead terminal 46 a for the front surface terminal and the secondclip lead terminal 46 b for the rear surface terminal at middle portions of the clip lead terminals. Moreover, theguide member 42 b connects both the adjacentclip lead terminals lead portions 40. That is, the connectingportions 42 are made of the same material as theclip lead terminals 46 then formed continuously unitedly therewith. - Next, the
clip lead terminals 46 and the connectingterminals 14 are connected electrically to each other by sandwiching theend portion 12 and the connectingterminals 14 formed thereon between theclip members terminals 14 of theboard 12 are comprised of the frontsurface connecting terminals 14 a and rearsurface connecting terminals 14 b, which are arranged alternately. - After the above connection, portions of the tie bars26 a and the
guide members 26 b as the connectingportions 26 are cut off by the use of the die, etc., then the respectiveclip lead terminals 46 are separated at least electrically. The cut is done along the broken lines c in FIGS. 5A to 5C. Incidentally, in FIG. 5, the broken lines c are illustrated so as to be shifted from the actual lines. - The
lead portions 50 of theclip lead terminals 46 are bent on every other one. On this occasion, thelead portions 50 a of the firstclip lead terminals 46 a are bent at four locations thereof, thereby forming substantially “U”-like bent portion, respectively. - Besides, the
lead portions 50 a are bent, then thebent lead portions 50 a and thenon-bent lead portions 50 b are made in parallel with each other as two rows viewing from a side of the board. Also, it is preferable that the respective leading ends of thelead portion 50 a and thelead portion 50 b are aligned on the same level (FIGS. 6A to 6C). - As described above, according to the clip lead terminal connecting method of the fifth embodiment, the first
clip lead terminal 46 a and the secondclip lead terminal 46 b are previously united as one-body through the connectingportion 42 then connected to theboard 12, so that both theclip lead terminals board 12 at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminal can be connected easily to the board of the module by using the clip lead terminal connecting method according to the fifth embodiment. - Sixth Embodiment
- A lead terminal connecting board of a sixth embodiment according to the invention will be described with reference to FIG. 7 to FIG. 9. FIG. 7A is a diagram showing cross section of a lead terminal connecting board with lead terminals not inserted into insertion holes yet, FIG. 7B is a diagram showing cross section taken along the line A-A of FIG. 7A.
- FIG. 8 is a diagram showing cross section of a lead terminal connecting board on a state where lead terminals are inserted into insertion holes.
- FIG. 9A is a plan view of the lead terminal connecting board on a state where the lead terminals are inserted into the insertion holes, and FIG. 9B is a side view of the lead terminal connecting board shown in FIG. 9A.
- The clip lead terminal connecting board according to the sixth embodiment has a multi-layer body or a lamination or stacked
layer body 58 which is comprised of an insulatingcore layer 52, intermediate layers made of a copper formed or laminated on and below thecore layer 54, and insulating prepreg layers 56 formed or laminated outside each of theintermediate layer 54. Theintermediate layer 54 has insertion holes 62 into each of which alead terminal 60 is inserted. Theprepreg layer 56 has a viahole 64, being formed therethrough and reaching theinsertion hole 62. - Further, in this embodiment,
surface copper layer 66 are formed on surfaces of theprepreg layer 56. Also, in this embodiment, anothercopper layer 66 a are formed on the inner surfaces of the insertion holes 62 and the inner surfaces of the via holes 64 in order to raise the reliability for the connection between thelead terminal 60 and thelamination layer body 58. - Furthermore, after the
lead terminal 60 has been inserted into theinsertion hole 62, aconductive adhesive 68 is filled in the viahole 64. Thelead terminal 60 and thesurface copper layer 66 are connected electrically through theconductive adhesive 68 and thecopper layer 66 a (FIG. 8A). Then,electronic components 16 of amodule 70 shown in FIGS. 9A and 9B are connected electrically to thesurface copper layer 66. Thelead terminal 60 is shaped in a straight line and becomes thinner toward the leading end on an insertion side to form an offset nose. The offset nose structure prevents the lead terminal 60 from being excessively inserted into theinsertion hole 62. - As described above, the lead terminal connecting board according to the sixth embodiment has the insertion holes62 arranged in upper and lower rows on an end face of the board comprised of the
lamination layer body 58. Therefore, due to the insertion of the lead terminals into the insertion holes 62, there can be shortened the time required for connecting the clip lead terminals to DIMM. Accordingly, the clip lead terminal can be connected easily to the board of the module by using the clip lead terminal connecting board according to the sixth embodiment. - Seventh Embodiment
- Next, referring to FIG. 10, there is shown a method of producing the board with the lead terminals, of the seventh embodiment according to the seventh embodiment. FIG. 10 is comprised of FIGS. 10A and 10B, which show process views of explaining a method of producing the board with the lead terminals according to the seventh embodiment.
- In the method of producing the board with the clip lead terminals, according to the seventh embodiment,
intermediate layers 54 having insertion holes 62 into which leadterminals 60 are inserted along theintermediate layers 54, are formed or laminated on and below an insulatingcore layer 52, respectively. Then, in this embodiment, copper layers 66 a are formed on the inner surfaces of the insertion holes or recesses 62 in order to raise the reliability for the connection between thelead terminal 60 and thelaminated layer 58. - Then, the
lead terminals 60 are inserted into the insertion holes or recesses 62. - Prepreg layers56 have formed therethrough via
holes 64 each penetrating through the prepreg layers 56 and reaching the insertion holes 62, respectively. The prepreg layers 56 are formed or laminated outside each of theintermediate layer 54. In this embodiment, the surface copper layers 66 are provided on the surfaces of the prepreg layers 56 and the inner surface of the via holes 64. - Next, the pressure and heat are applied to the
lamination layer body 58 constituted by thecore layer 52, theintermediate layers 54 and the prepreg layers 56, from outside the prepreg layers 56 so as to attain the thermocompression-bonding therebetween. On this occasion, the thermocompression-bonding is carried out by pressing e.g. the soldering iron theprepreg layer 56 under the temperature condition of about 180° C. or a temperature higher than 180° C. Due to this thermocompression bonding, there can be obtained the board with the lead terminal shown in FIG. 9. - In the above mentioned respective embodiments, the inventions have been described by the use of the embodiments of the specific materials and the specific conditions, however, these inventions can be much changed and modified. For example, in the above embodiments, the DIMM is used as the module, but these inventions can also be applied to the SIMM.
- According to the first aspect and the second aspect of the invention, the first clip lead terminal for the front surface terminal (for the first main surface connecting terminal) and the second clip lead terminal for the rear surface terminal (for the second main surface connecting terminal) are united to form an unit type clip lead terminal, so that both the clip lead terminals for the front surface terminal and the clip lead terminals for the rear surface terminal can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminal according to present invention.
- According to the unit type clip lead terminal of the present invention, since the insulating tape is used as the connecting portion, the connecting portions need not be cut off after the unit type clip lead terminal has been connected to the board.
- According to the third aspect of the invention, the clip lead terminal for the front surface terminal (for the first main surface connecting terminal) and the clip lead terminal for the rear surface terminal (for the second main surface connecting terminal) are united to thereby obtain the unit type clip lead terminal, so that both the clip lead terminals for the front surface terminal and the clip lead terminals for the rear surface terminal can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the unit type clip lead terminals according to the third aspect of the invention.
- Furthermore, according to the unit type clip lead terminal of the invention, the clip lead terminals are connected to each other through an insulating spacer. Accordingly, the connecting portion need not be cut off after the unit type clip lead terminal has been connected to the board. Also, the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are connected to the opposed main surfaces of the insulating spacer, respectively, whereby the lead portions of the clip lead terminals need not be bent.
- According the clip lead terminal connecting methods of the fourth aspect and the fifth aspect according to the invention, the clip lead terminal for the front surface terminal and the clip lead terminal for the rear surface terminal are previously united into one-body and then connected to the board, so that both the clip lead terminals for the front surface terminal and the clip lead terminals for the rear surface terminal can be connected to the board at one time by one operation. As a result, there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting methods of the fourth aspect and the fifth aspect of the invention.
- According to the sixth aspect of the invention, the lead terminal connecting board has the insertion holes on the end surface of the board, so that there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the clip lead terminal connecting board of the sixth aspect of the invention.
- According to the method of producing the board with lead terminals of the seventh aspect of the invention, the lamination layer body in which the lead terminals are inserted into the insertion holes is subjected to the thermocompression bonding, so that there can be shortened the time required for connecting the clip lead terminals to the DIMM. Accordingly, the clip lead terminals can be connected easily to the board of the module by using the method of producing the board with the lead terminals of the seventh aspect of the invention.
- Many widely different embodiments of the invention may be constructed without departing from the spirit and scope of the invention. It should be understood that the invention is not limited to the specific embodiments described in the specification, except as defined in the appended claims.
Claims (9)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8201643A JPH1050919A (en) | 1996-07-31 | 1996-07-31 | Clip lead terminal bundle, connection of clip lead terminal, lead terminal connecting board and manufacture of board with lead terminals |
JP8-201643 | 1996-07-31 | ||
JP201643/96 | 1996-07-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010003371A1 true US20010003371A1 (en) | 2001-06-14 |
US6320247B2 US6320247B2 (en) | 2001-11-20 |
Family
ID=16444493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/818,994 Expired - Fee Related US6320247B2 (en) | 1996-07-31 | 1997-03-17 | Unit type clip lead terminal, clip lead terminal connecting method, lead terminal connecting board, and method of producing board with lead terminals |
Country Status (4)
Country | Link |
---|---|
US (1) | US6320247B2 (en) |
EP (1) | EP0822737A3 (en) |
JP (1) | JPH1050919A (en) |
KR (1) | KR100366733B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008138898A1 (en) * | 2007-05-09 | 2008-11-20 | Continental Automotive Gmbh | Circuit board with integrated press-fit pin |
JP2012243426A (en) * | 2011-05-16 | 2012-12-10 | Tyco Electronics Japan Kk | Circuit board and electrical connector |
US9927575B2 (en) | 2015-06-25 | 2018-03-27 | Huawei Technologies Co., Ltd. | Optical coupling using polarization beam displacer |
CN114600211A (en) * | 2019-11-07 | 2022-06-07 | 罗伯特·博世有限公司 | Contact system with a joining aid and method for joining |
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US6071139A (en) | 1998-03-31 | 2000-06-06 | Micron Technology, Inc. | Locking assembly for securing semiconductor device to carrier substrate |
US6398573B1 (en) | 1998-03-31 | 2002-06-04 | Micron Technology, Inc. | Locking assembly for securing semiconductor device to carrier substrate |
US6535393B2 (en) * | 1998-12-04 | 2003-03-18 | Micron Technology, Inc. | Electrical device allowing for increased device densities |
US7135335B2 (en) * | 1999-05-28 | 2006-11-14 | Stemcell Technologies Inc. | Method for separating cells using immunorosettes |
KR20150100388A (en) * | 2014-02-25 | 2015-09-02 | 삼성전자주식회사 | Memory module and method for performing selective recessed reference plane |
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US4257668A (en) * | 1979-01-02 | 1981-03-24 | Gte Automatic Electric Laboratories, Inc. | Edge clip terminal for mounting thick film hybrid circuits in printed circuit boards |
US4712850A (en) * | 1982-01-04 | 1987-12-15 | North American Specialties Corp. | Terminal strip with attached support and method of manufacture |
KR950006432B1 (en) * | 1986-02-21 | 1995-06-15 | 가부시기가이샤 히다찌세이사꾸쇼 | Hybrid intergrated circuit device and method of and lead facturing the same |
JPS63283051A (en) * | 1987-05-14 | 1988-11-18 | Nec Corp | Substrate for hybrid integrated circuit device |
US4855866A (en) * | 1987-06-06 | 1989-08-08 | Murata Manufacturing Co., Ltd. | Capacitor network |
JPH01199497A (en) * | 1987-11-10 | 1989-08-10 | Ibiden Co Ltd | Electronic component mounting substrate |
US4985747A (en) * | 1988-06-09 | 1991-01-15 | Oki Electric Industry Co., Ltd. | Terminal structure and process of fabricating the same |
JP2588956B2 (en) * | 1988-11-09 | 1997-03-12 | 三菱電機株式会社 | Zigzag in-line type module and method of manufacturing zig-zag in-line type module |
US4985742A (en) * | 1989-07-07 | 1991-01-15 | University Of Colorado Foundation, Inc. | High temperature semiconductor devices having at least one gallium nitride layer |
JPH03175660A (en) * | 1989-12-04 | 1991-07-30 | Nec Corp | Single in-line module device |
US5030144A (en) * | 1990-04-13 | 1991-07-09 | North American Specialties Corporation | Solder-bearing lead |
DE69119381T2 (en) * | 1990-12-21 | 1996-11-14 | Whitaker Corp | Procedure for attaching a connector to a circuit element and solder connection frame therefor |
JPH04286397A (en) * | 1991-03-15 | 1992-10-12 | Mitsubishi Electric Corp | Hybrid integrated circuit device |
US5249355A (en) * | 1991-10-31 | 1993-10-05 | Hughes Aircraft Company | Method of fabricating a multilayer electrical circuit structure |
JPH0648477A (en) * | 1992-07-27 | 1994-02-22 | Murata Mfg Co Ltd | Taping electronic part |
JPH06306194A (en) * | 1993-04-26 | 1994-11-01 | Matsushita Electric Works Ltd | Production of prerreg for multilayer printed wiring board |
JP2586098Y2 (en) * | 1993-05-24 | 1998-12-02 | 株式会社村田製作所 | Electronic components and their mounting structures |
JP3396541B2 (en) * | 1993-08-30 | 2003-04-14 | 株式会社東芝 | Circuit board mounted with hybrid integrated circuit device |
JPH10509835A (en) * | 1994-11-30 | 1998-09-22 | ミネソタ・マイニング・アンド・マニュファクチュアリング・カンパニー | Multilayer laminated electrical connector assembly and manufacturing method |
-
1996
- 1996-07-31 JP JP8201643A patent/JPH1050919A/en not_active Withdrawn
-
1997
- 1997-03-13 EP EP97104268A patent/EP0822737A3/en not_active Withdrawn
- 1997-03-17 US US08/818,994 patent/US6320247B2/en not_active Expired - Fee Related
- 1997-04-17 KR KR1019970014259A patent/KR100366733B1/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008138898A1 (en) * | 2007-05-09 | 2008-11-20 | Continental Automotive Gmbh | Circuit board with integrated press-fit pin |
JP2012243426A (en) * | 2011-05-16 | 2012-12-10 | Tyco Electronics Japan Kk | Circuit board and electrical connector |
US9927575B2 (en) | 2015-06-25 | 2018-03-27 | Huawei Technologies Co., Ltd. | Optical coupling using polarization beam displacer |
CN114600211A (en) * | 2019-11-07 | 2022-06-07 | 罗伯特·博世有限公司 | Contact system with a joining aid and method for joining |
Also Published As
Publication number | Publication date |
---|---|
EP0822737A3 (en) | 2000-05-10 |
JPH1050919A (en) | 1998-02-20 |
US6320247B2 (en) | 2001-11-20 |
EP0822737A2 (en) | 1998-02-04 |
KR100366733B1 (en) | 2003-03-03 |
KR980012372A (en) | 1998-04-30 |
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