WO2021134261A1 - Carte de circuit imprimé flexible et dispositif électronique - Google Patents

Carte de circuit imprimé flexible et dispositif électronique Download PDF

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Publication number
WO2021134261A1
WO2021134261A1 PCT/CN2019/130038 CN2019130038W WO2021134261A1 WO 2021134261 A1 WO2021134261 A1 WO 2021134261A1 CN 2019130038 W CN2019130038 W CN 2019130038W WO 2021134261 A1 WO2021134261 A1 WO 2021134261A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
flexible circuit
grounding
ground
connecting portion
Prior art date
Application number
PCT/CN2019/130038
Other languages
English (en)
Chinese (zh)
Inventor
赵晋阳
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/130038 priority Critical patent/WO2021134261A1/fr
Publication of WO2021134261A1 publication Critical patent/WO2021134261A1/fr

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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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits

Definitions

  • This application relates to the technical field of circuit boards, and in particular to a flexible circuit board and an electronic device using the flexible circuit board.
  • Flexible circuit board is a component of various electronic products, and its grounding combination is mostly to attach the ground terminal of the bottom layer of the flexible circuit board and the ground steel sheet with hot or cold pressure conductive adhesive to achieve it.
  • the flexible circuit board itself realizes the upper and lower layers of conduction through the through holes, and the flexible circuit board components are connected to the top layer of the flexible circuit board through the solder paste, and then the conduction between the flexible circuit board and the grounding steel sheet is realized. through.
  • the purpose of the present application is to provide a flexible circuit board that can avoid some poor grounding phenomena such as abnormal grounding resistance and an electronic device using the flexible circuit board.
  • a flexible circuit board which includes a circuit board main body and a grounding reinforcement sheet
  • the circuit board main body includes a circuit part with a circuit and a connection part connecting the circuit part
  • the connection part It includes a ground terminal region, the ground terminal region is located at or extends to the edge of the connecting portion, the ground reinforcing sheet is stacked on the connecting portion, and at least part of the ground terminal region exposes the ground reinforcing sheet.
  • the ground reinforcement sheet is laminated and arranged on the connection part through conductive adhesive bonding.
  • the ground reinforcement sheet is a steel sheet.
  • the connecting portion further includes other areas connected to the grounding terminal area, the grounding terminal area includes a first portion and a second portion connected to the first portion and located at the edge of the connecting portion, the grounding complement
  • the strong sheet is overlapped and arranged in the other area and the first part, and the second part is exposed outside the ground reinforcing sheet.
  • the second part includes a first arc-shaped side located at the edge of the connecting portion, and the first arc-shaped side protrudes in a direction away from the first part.
  • the grounding reinforcement sheet includes an opening corresponding to the second part and exposing the second part outside the grounding reinforcement sheet.
  • the opening is a semi-closed gap at the edge of the grounding reinforcement sheet.
  • the grounding reinforcement sheet includes a second arc-shaped side surrounding the gap, and the second arc-shaped side protrudes toward the direction where the first part is located.
  • the ground reinforcing sheet includes other contour edges connected to both ends of the second arc-shaped side, and the other contour edges of the ground reinforcing sheet and the contour edges of the connecting portion and the connecting portion The position connected with the line part is superimposed.
  • An electronic device includes a flexible circuit board, and the flexible circuit board adopts any one of the above-mentioned technical solutions and a flexible circuit board with improved technical solutions.
  • the ground terminal area of the circuit board main body is located at or extends to the edge of the connecting portion, and at least part of the ground terminal area exposes the ground supplement
  • the strong piece during the pressing or attaching process of the grounding reinforcing piece, the gas between the grounding end area and the grounding reinforcing piece is easily discharged, avoiding the occurrence of some bad grounding phenomena such as abnormal grounding resistance, so that The flexible circuit board of the present application has high reliability.
  • grounding reinforcing sheet when the grounding reinforcing sheet is bonded to the connecting portion by conductive glue, air bubbles are likely to be generated during the bonding process by the conductive glue, and the grounding terminal area is located at the grounding portion. The edge makes the bubble gas easier to discharge.
  • the ground reinforcement sheet is a steel sheet, which is relatively common, which makes the flexible circuit board easy to implement and has strong practicability.
  • the connecting portion further includes other areas connected to the ground terminal area, and the ground terminal area includes a first portion and a second portion connected to the first portion and located at the edge of the connecting portion.
  • the grounding reinforcement sheet is superimposed on the other area and the first part, and the second part is exposed outside the grounding reinforcement sheet, so that the bubble gas located at the edge of the grounding part can be more easily discharged.
  • the second part includes a first arc-shaped side located at the edge of the connecting portion, and the first arc-shaped side protrudes in a direction away from the first part.
  • the second part of the shape facilitates the picking and placement of the flexible circuit board and the attachment of the ground reinforcement sheet.
  • the grounding reinforcement sheet includes an opening corresponding to the second part and allowing the second part to be exposed outside the grounding reinforcement sheet.
  • the opening may be a semi-closed gap located at the edge of the ground reinforcement sheet. The arrangement of the opening, especially the notch at the edge, is more conducive to the discharge of bubble gas.
  • the grounding reinforcement sheet includes a second arc-shaped side surrounding the gap, and the second arc-shaped side protrudes toward the direction where the first part is located.
  • the second arc-shaped side of the shape facilitates the pick-up and placement of the flexible circuit board and the attachment of the ground reinforcement sheet.
  • the ground reinforcing sheet includes other contour edges connected to both ends of the second arc-shaped side, and the other contour edges of the ground reinforcing sheet are connected to the contour edges of the connecting portion and all The connecting position of the connecting part and the line part are overlapped, and this design can achieve a better reinforcement effect.
  • FIG. 1 is a schematic structural diagram of a flexible circuit board provided by an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a flexible circuit board 10 provided by an embodiment of the present application.
  • the flexible circuit board 10 includes a circuit board main body 20 and a ground reinforcement sheet 30.
  • the circuit board main body 20 includes a circuit portion 21 having circuits and connecting portions 22 and 23 connected to the circuit portion 21.
  • the connecting portion 22 and the connecting portion 23 are respectively connected to two ends of the circuit portion 21, and can be respectively electrically connected with external circuits and other components, so as to electrically connect two different external circuit components.
  • the connecting portion 22 includes a ground terminal region 220 and other regions 223 connected to the ground terminal region, and the ground terminal region 220 is located or extends to the edge of the connecting portion 22.
  • the ground terminal area 220 includes a first portion 221 and a second portion 222 connected to the first portion 221 and located at the edge of the connecting portion 22.
  • the second portion 222 includes a first arc-shaped side 222 a located at the edge of the connecting portion 22, and the first arc-shaped side 222 a protrudes away from the first portion 22.
  • the ground reinforcing sheet 30 is overlapped and arranged on the connecting portion 22 and at least part of the ground terminal region 220 is exposed to the ground reinforcing sheet 30.
  • the ground reinforcing sheet 30 is a steel sheet, and the ground reinforcing sheet 30 is laminated and arranged on the connecting portion 22 through conductive adhesive bonding.
  • the ground reinforcement sheet 30 is superimposed on the other area 223 and the first portion 221, and the second portion 222 is exposed outside the ground reinforcement sheet 30.
  • the ground reinforcement sheet 30 includes an opening 31 a corresponding to the second portion 222 and allows the second portion 222 to be exposed outside the ground reinforcement sheet 30.
  • the opening 31a is a semi-closed gap located at the edge of the ground reinforcement sheet 30.
  • the ground reinforcement piece 30 includes a second arc-shaped side 31 surrounding the gap, and the second arc-shaped side 31 protrudes toward the direction where the first portion 221 is located.
  • the ground reinforcing sheet 30 includes other contour edges 32 connected to both ends of the second arc-shaped side 31, and the other contour edges 32 of the ground reinforcing sheet 30 and the contour edges 222b of the connecting portion 22 And the connecting position 222c between the connecting portion 22 and the line portion 21 overlaps.
  • the ground terminal area 220 of the circuit board body 20 is located or extends to the edge of the connecting portion 22, and at least part of the ground terminal area 220 is exposed.
  • the grounding reinforcement sheet 30 during the pressing or attaching process of the grounding reinforcement sheet 30, the gas between the grounding terminal area 220 and the grounding reinforcement sheet 30 is easily exhausted, so as to avoid some abnormal ground resistance values, etc. The occurrence of poor grounding makes the flexible circuit board 10 of the present application highly reliable.
  • ground reinforcing sheet 30 when the ground reinforcing sheet 30 is bonded to the connecting portion 22 by conductive adhesive, air bubbles are likely to be generated during the bonding process by the conductive adhesive, and the ground terminal region 220 is located at the The edge of the grounding portion 22 makes it easier to discharge the bubble gas.
  • the ground reinforcement sheet 30 is a steel sheet, which is relatively common, which makes the flexible circuit board 20 easy to implement and has strong practicability.
  • the connecting portion 22 further includes other regions 223 connected to the ground terminal region 220.
  • the ground terminal region 220 includes a first portion 221 and connected to the first portion 221 and located at the connecting portion 22.
  • the second part 222 of the edge, the grounding reinforcement sheet 30 is superimposed on the other area 223 and the first part 221, and the second part 222 is exposed outside the grounding reinforcement sheet 30 so as to be located.
  • the bubbling gas at the edge of the grounding portion 22 is more easily discharged.
  • the second portion 222 includes a first arc-shaped side 222a located at the edge of the connecting portion 22, and the first arc-shaped side 222a protrudes in a direction away from the first portion 221 .
  • the second part 222 of the shape facilitates the picking and placement of the flexible circuit board 10 and the attachment of the ground reinforcement sheet.
  • the ground reinforcement sheet 30 includes an opening 31 a corresponding to the second portion 222 and allows the second portion 222 to be exposed outside the ground reinforcement sheet 30.
  • the opening 31a may be a semi-closed notch located at the edge of the ground reinforcement sheet 30. The arrangement of the opening 31a, especially the notch at the edge, is more conducive to the discharge of bubble gas.
  • the grounding reinforcement sheet 30 includes a second arc-shaped side 31 surrounding the gap, and the second arc-shaped side 31 protrudes toward the direction where the first portion 221 is located.
  • the second arc-shaped side 31 of the shape facilitates the pick-up and placement of the flexible circuit board 10 and the attachment of the ground reinforcement sheet.
  • the ground reinforcement sheet 30 includes other contour edges connected to both ends of the second arc-shaped side 31, and the other contour edges 32 of the ground reinforcement sheet 30 and the connecting portion 22
  • the contour edge 222b of ⁇ and the position where the connecting portion 22 and the line portion 21 are connected are roughly overlapped. This design can achieve a better reinforcement effect.
  • the present application also provides an electronic device, which includes a flexible circuit board, the flexible circuit board adopts the flexible circuit board 10 described in the above-mentioned embodiment, and is used to electrically connect two circuit elements in the electronic device. connection.
  • the electronic device may include, but is not limited to, a mobile phone, a monitor, a desktop computer, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), Wearable Device, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

L'invention concerne une carte de circuit imprimé flexible (10), et un dispositif électronique employant la carte de circuit imprimé flexible (10). La carte de circuit imprimé flexible (10) comprend un corps principal (20) de carte de circuit imprimé et et une plaque de renfort de masse (30). Le corps principal (20) de carte de circuit imprimé comprend une partie de circuit (21) comportant des circuits, et une partie de connexion (22, 23) connectée à la partie de circuit (21) et comprenant une zone d'extrémité de masse (220). La zone d'extrémité de masse (220) est située au niveau d'un bord de la partie de connexion (22, 23) ou s'étend vers ce bord. La plaque de renfort de masse (30) est disposée au-dessus de la partie de connexion (22, 23) et est superposée à cette dernière, et au moins une partie de la zone d'extrémité de masse (220) est exposée par la plaque de renfort de masse (30). La carte de circuit imprimé flexible (10) peut éviter l'existence d'une mauvaise connexion à la masse telle qu'une anomalie de résistance à la masse.
PCT/CN2019/130038 2019-12-30 2019-12-30 Carte de circuit imprimé flexible et dispositif électronique WO2021134261A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/130038 WO2021134261A1 (fr) 2019-12-30 2019-12-30 Carte de circuit imprimé flexible et dispositif électronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/130038 WO2021134261A1 (fr) 2019-12-30 2019-12-30 Carte de circuit imprimé flexible et dispositif électronique

Publications (1)

Publication Number Publication Date
WO2021134261A1 true WO2021134261A1 (fr) 2021-07-08

Family

ID=76686078

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/130038 WO2021134261A1 (fr) 2019-12-30 2019-12-30 Carte de circuit imprimé flexible et dispositif électronique

Country Status (1)

Country Link
WO (1) WO2021134261A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050254175A1 (en) * 2004-05-14 2005-11-17 Hutchinson Technology Incorporated Method for making noble metal conductive leads for suspension assemblies
CN101321434A (zh) * 2008-07-17 2008-12-10 深圳市中兴新宇软电路有限公司 柔性线路板的屏蔽及接地结构
CN101472398A (zh) * 2007-12-28 2009-07-01 比亚迪股份有限公司 多层柔性印刷线路板及其制造方法
KR20120076968A (ko) * 2010-12-30 2012-07-10 엘지디스플레이 주식회사 가요성인쇄회로기판
CN202979459U (zh) * 2012-12-17 2013-06-05 江西鑫力华数码科技有限公司 Ic背面刚性补强上带透气孔的柔性线路板
CN203554793U (zh) * 2013-10-23 2014-04-16 深圳市凯木金科技有限公司 电路板软板防起泡变形结构及电路板
CN204929391U (zh) * 2015-09-16 2015-12-30 深圳市双林宏电子有限公司 一种具有补强钢片的柔性印刷线路板
CN105323339A (zh) * 2015-09-22 2016-02-10 广东欧珀移动通信有限公司 一种柔性电路板和移动终端

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050254175A1 (en) * 2004-05-14 2005-11-17 Hutchinson Technology Incorporated Method for making noble metal conductive leads for suspension assemblies
CN101472398A (zh) * 2007-12-28 2009-07-01 比亚迪股份有限公司 多层柔性印刷线路板及其制造方法
CN101321434A (zh) * 2008-07-17 2008-12-10 深圳市中兴新宇软电路有限公司 柔性线路板的屏蔽及接地结构
KR20120076968A (ko) * 2010-12-30 2012-07-10 엘지디스플레이 주식회사 가요성인쇄회로기판
CN202979459U (zh) * 2012-12-17 2013-06-05 江西鑫力华数码科技有限公司 Ic背面刚性补强上带透气孔的柔性线路板
CN203554793U (zh) * 2013-10-23 2014-04-16 深圳市凯木金科技有限公司 电路板软板防起泡变形结构及电路板
CN204929391U (zh) * 2015-09-16 2015-12-30 深圳市双林宏电子有限公司 一种具有补强钢片的柔性印刷线路板
CN105323339A (zh) * 2015-09-22 2016-02-10 广东欧珀移动通信有限公司 一种柔性电路板和移动终端

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