EP1219148A1 - Circuit imprime souple comprenant une partie arriere de connexion pouvant etre reparee - Google Patents
Circuit imprime souple comprenant une partie arriere de connexion pouvant etre repareeInfo
- Publication number
- EP1219148A1 EP1219148A1 EP00951731A EP00951731A EP1219148A1 EP 1219148 A1 EP1219148 A1 EP 1219148A1 EP 00951731 A EP00951731 A EP 00951731A EP 00951731 A EP00951731 A EP 00951731A EP 1219148 A1 EP1219148 A1 EP 1219148A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connector
- circuit
- connector elements
- edge
- elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/62—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0286—Programmable, customizable or modifiable circuits
- H05K1/0293—Individual printed conductors which are adapted for modification, e.g. fusable or breakable conductors, printed switches
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
-
- 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
- H05K2201/05—Flexible printed circuits [FPCs]
- H05K2201/053—Tails
-
- 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
- H05K2201/09009—Substrate related
- H05K2201/09127—PCB or component having an integral separable or breakable part
-
- 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
- H05K2201/09372—Pads and lands
- H05K2201/09409—Multiple rows of pads, lands, terminals or dummy patterns; Multiple rows of mounted components
-
- 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
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09709—Staggered pads, lands or terminals; Parallel conductors in different planes
-
- 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
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/0979—Redundant conductors or connections, i.e. more than one current path between two points
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0228—Cutting, sawing, milling or shearing
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/17—Post-manufacturing processes
- H05K2203/175—Configurations of connections suitable for easy deletion, e.g. modifiable circuits or temporary conductors for electroplating; Processes for deleting connections
-
- 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
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0052—Depaneling, i.e. dividing a panel into circuit boards; Working of the edges of circuit boards
-
- 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
- H05K3/22—Secondary treatment of printed circuits
- H05K3/225—Correcting or repairing of printed circuits
Definitions
- the present invention relates generally to flexible printed circuits ("flex circuits”), and more particularly to approaches for repairing flex circuits.
- FIG. 1 illustrates a typical application of flex circuits, wherein a connector tail portion of a flex circuit 987 is electrically connected to an electronic assembly 34, which may be an electronic module, a circuit board, another flex circuit, an electrical connector, or any other electrical/electronic device, component, or assembly to which it is desired to connect a flex circuit.
- an electronic assembly 34 which may be an electronic module, a circuit board, another flex circuit, an electrical connector, or any other electrical/electronic device, component, or assembly to which it is desired to connect a flex circuit.
- the flex circuit itself may be populated with electronic components, or may be part of an electrical wiring/bus system, or the like.
- Connection of the flex circuit 987 to the electronic assembly 34 is most typically carried out by soldering.
- flex circuits rather than conventional round- wire wire harnesses has become increasingly more commonplace, especially in the computer, automotive, aviation, and aerospace industries.
- one drawback of using flex circuitry is the difficulty of servicing the electronic assemblies 34 connected by the flex. That is, if a particular asse bly 34 fails and needs to be replaced, it is difficult to remove the assembly 34 from the overall circuit and connect back in a replacement assembly, without damaging the flex circuit or requiring tedious and expensive procedures for effecting replacement. It would be desirable, therefore, to provide a way of allowing flex circuits to be used while at the same time providing for an easy, effective, and inexpensive way of allowing for replacement of failed electronic assemblies 34.
- the present invention provides a flex circuit with a repairable connector tail portion.
- An article according to the present invention comprises: a generally flexible, electrically insulative substrate having a first edge thereof, and a plurality of electrically conductive circuit traces arranged on the substrate. Each circuit trace has an end thereof terminating at a first connector element thereof proximate the first edge, and at least one second connector element thereof spaced apart from the first connector element, with each of said first and second connector elements being a plated through hole, a plated blind via, or a solder pad.
- the present invention provides a connector portion for a flex circuit which facilitates both (1) connection of the flex circuit to an electronic module, another flex circuit, or the like, and (2) disconnection and reconnection of the flex circuit, such as may be needed to facilitate repairs.
- Another advantage is that the present; invention may be easily incorporated into the designs of most existing flex circuits .
- FIG. 1 is a plan view of a flex circuit and an electronic assembly prior to connection therebetween according to the prior art
- FIGS. 2-3 are plan views of a flex circuit connector tail according to the present invention, respectively before and after connection with an electronic assembly;
- FIGS. 4-5 are plan views of the circuit connection shown in FIG. 3 after cutting along a cutting line thereof, respectively before and after replacing the electronic assembly;
- FIGS. 6-7 are plan views of the circuit connection shown in FIG. 3 after cutting along an alternate cutting line thereof, respectively before and after replacing the flex circuit; and FIG. 8 is a plan view of an alternative embodiment of the present invention.
- FIGS. 2-8 show a repairable flex circuit 1 according to the present invention, comprising: a generally flexible, electrically insulative substrate 2 having a first edge 3 thereof, and a plurality of electrically conductive circuit traces 5 arranged on the substrate.
- Each circuit trace has an end thereof terminating at a first connector element 8 proximate the first edge 3, and at least one second connector element 13 spaced apart from the first connector element, with each of said first and second connector elements being a plated through hole, a plated blind via, or a solder pad.
- A Connector element segment of flex/tail
- the first and second connector elements 8/13 of the flex circuit connector tail 1 should be exposed (i.e., not covered over by the flex circuit's insulating polymer layer) so as to be readily interconnectable with the pins, plated through holes, solder pads, or other connector features 55 of the electronic assembly 34 to which the connector tail 1 is to be connected.
- the interconnection between the connector tail 1 and the assembly 34 is preferably effected by soldering, but may also be effected by ultrasonic welding, heat staking, crimping, pinning, laser bonding, or the like.
- interconnection is made by aligning the flex tail 1 and the electronic assembly 34 such that the connector elements 55 of the assembly 34 overlap (or are overlapped by) the connector tail's first connector elements 8, as illustrated at reference numeral 89 in FIG. 3.
- the overlapping elements 8/55 may be connected together.
- soldering is used and the connector elements 8/55 are plated through holes, it may be desirable to insert a pin through each pair of overlapping through holes 8/55 prior to soldering, in order to assist in alignment and solder joint strengthening.
- each trace 5 terminates proximate the first edge 3 at a first connector element 8.
- the connector elements 8/13 on the connector tail 1 should be arranged so as to matchingly correspond with the respective connector elements 55 of the electronic assembly 34; that is, the pattern and spacing of the connector tail's connector elements 8/13 should essentially mirror that of the corresponding assembly's connector elements 55. This is desired so that proper alignment of the overlapping connector elements can be achieved.
- each of the first and second connector elements 8/13 may be aligned -- with respect to all corresponding other of the first and second connector elements -- either (1) along a generally straight line 144 running transverse to the length of the traces 5 (see FIG. 8), or (2) along a generally zigzagged line 233 running transverse to the traces (see FIGS. 2-7).
- the connector tail 1 of the present invention serves to electrically and mechanically connect together the traces 5 of the flex circuit with the corresponding traces of the electronic assembly.
- the connector tail 1 may be cut so as to present a second set of connector elements 13 to which a new flex circuit 1' or electronic assembly 34' may be connected.
- the replacement process is illustrated m FIGS. 4-5, where the replacement of the assembly 34 is illustrated. The replacement process is begun by cutting the connector tail 1 along a cutting line 21 which runs transverse to the traces 5 between the first connector elements 5 and the ad acent set of second connector elements 13, as shown in FIG. 4. This essentially presents these second connector elements 13 so as to be the connector elements closest to the newly cut first edge 377.
- the connector tail 1 and the replacement assembly 34 ' may be aligned such that the replacement assembly's connector elements 55 ' overlap (or are overlapped by) the connector tail's second connector elements 13 proximate the newly cut first edge 377, as illustrated m FIG. 5.
- the specially configured connector tail of the present invention may not only be used to initially connect together the flex circuit 1 and an electronic assembly 34, but may also be beneficially used to remove either the flex circuit 1 or the assembly 34 from the overall circuit connection and easily replace it with a new one l'/34' . If the connector tail 1 is provided with only one set of second connector elements 13, then only one repair/replacement may be performed after the initial connection; however, if more than one set of second connector elements 13 are provided, then a like number of repairs may be made. The number of second connector element sets 13 provided should be determined according to how often repair of the circuit is anticipated.
- the present invention may in fact be used to connect together more than two circuits at a time, as illustrated m FIG. 8.
- the flex circuit 1 of the present invention is best constructed using conventional flex circuit structure (i.e., wherein the substrate 2 is made of polyester, polyimide, polyetherimide, or the like, and the circuit traces 5 are made of copper, carbon, aluminium, solder, conductive ink, or the like) , it is not required that the electronic assembly 34 or the area surrounding its connector elements 55 be made of flex.
- the present invention is equally applicable to electronic assemblies 34 made of rigid FR-4 epoxy/glass, ceramic (e.g., alumina), etched tri-layer-metal construction, and so on.
- the word "connector tail” has been used throughout to describe the specially designed connector element arrangement of the present invention, the arrangement of the connector elements 8/13 does not necessarily have to be provided on a "tail” portion that extends outward from the general periphery of the flex circuit.
- the use of the word “tail” refers more to a portion of a flex circuit on which first and second connector elements 8/13 are arrayed according to the present invention, as opposed to defining and limiting the geometric shape of this portion per se .
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Combinations Of Printed Boards (AREA)
Abstract
L'invention concerne un circuit imprimé souple (1). Ce circuit comprend un substrat (2) électriquement isolant et généralement souple, pourvu d'un premier bord (3) et de plusieurs tracés de circuit électriquement conducteurs (5) placés sur ce substrat. Chaque tracé de circuit comporte une extrémité, se terminant au niveau d'un premier élément de connecteur (8) proche du premier bord (3) et au moins un deuxième élément de connecteur (13) espacé du premier élément de connecteur. Le premier et le deuxième élément de connexion sont formés par un trou traversant plaqué, un trou d'interconnexion borgne, ou une plage de soudure.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38720199A | 1999-08-31 | 1999-08-31 | |
PCT/GB2000/003077 WO2001017321A1 (fr) | 1999-08-31 | 2000-08-10 | Circuit imprime souple comprenant une partie arriere de connexion pouvant etre reparee |
US387201 | 2003-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1219148A1 true EP1219148A1 (fr) | 2002-07-03 |
Family
ID=23528905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00951731A Withdrawn EP1219148A1 (fr) | 1999-08-31 | 2000-08-10 | Circuit imprime souple comprenant une partie arriere de connexion pouvant etre reparee |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1219148A1 (fr) |
JP (1) | JP2003508929A (fr) |
BR (1) | BR0013605A (fr) |
MX (1) | MXPA02001737A (fr) |
WO (1) | WO2001017321A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030042295A1 (en) * | 2001-08-30 | 2003-03-06 | Wong Marvin G. | Self-adhesive flexible repair circuit |
US6830176B2 (en) * | 2002-02-01 | 2004-12-14 | Visteon Global Technologies, Inc. | System and method for repairing flex circuits |
KR102662851B1 (ko) | 2018-08-29 | 2024-05-03 | 삼성전기주식회사 | 적층 세라믹 커패시터 및 그 제조 방법 |
KR20220076933A (ko) | 2020-12-01 | 2022-06-08 | 삼성전기주식회사 | 케이블 기판 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3226473A (en) * | 1963-03-04 | 1965-12-28 | Sanders Associates Inc | Encapsulated conductive paths with readily removable insulation |
DE1893562U (de) * | 1963-08-10 | 1964-05-27 | Telefunken Patent | Leiteranordnung zum verbinden der enden der leiterzuege zweier benachbarter gedruckter leiterplatten. |
US4889275A (en) * | 1988-11-02 | 1989-12-26 | Motorola, Inc. | Method for effecting solder interconnects |
JPH03194868A (ja) * | 1989-12-22 | 1991-08-26 | Hitachi Chem Co Ltd | 異方導電フイルムを用いる回路接続方法 |
JP2727862B2 (ja) * | 1992-04-28 | 1998-03-18 | 日本電気株式会社 | 接続テープおよびフィルムキャリア型icならびに接続方法 |
JPH08203341A (ja) * | 1995-01-20 | 1996-08-09 | Acer Peripherals Inc | 信号伝送用のフラットケーブル |
JPH11167971A (ja) * | 1997-12-05 | 1999-06-22 | Olympus Optical Co Ltd | 電子機器 |
-
2000
- 2000-08-10 EP EP00951731A patent/EP1219148A1/fr not_active Withdrawn
- 2000-08-10 JP JP2001521128A patent/JP2003508929A/ja active Pending
- 2000-08-10 MX MXPA02001737A patent/MXPA02001737A/es unknown
- 2000-08-10 BR BR0013605-0A patent/BR0013605A/pt not_active IP Right Cessation
- 2000-08-10 WO PCT/GB2000/003077 patent/WO2001017321A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0117321A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003508929A (ja) | 2003-03-04 |
WO2001017321A1 (fr) | 2001-03-08 |
BR0013605A (pt) | 2002-04-30 |
MXPA02001737A (es) | 2002-09-23 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20020227 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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17Q | First examination report despatched |
Effective date: 20021204 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20030415 |
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RBV | Designated contracting states (corrected) |
Designated state(s): AT BE DE GB |