WO2015101256A1 - 一种柔性电路板 - Google Patents

一种柔性电路板 Download PDF

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Publication number
WO2015101256A1
WO2015101256A1 PCT/CN2014/095332 CN2014095332W WO2015101256A1 WO 2015101256 A1 WO2015101256 A1 WO 2015101256A1 CN 2014095332 W CN2014095332 W CN 2014095332W WO 2015101256 A1 WO2015101256 A1 WO 2015101256A1
Authority
WO
WIPO (PCT)
Prior art keywords
area
bonding area
board
flexible circuit
circuit board
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.)
Ceased
Application number
PCT/CN2014/095332
Other languages
English (en)
French (fr)
Inventor
安乐平
王龙
高明
洪耀
浦斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Visionox Display Co Ltd
Original Assignee
Kunshan Visionox Display Co Ltd
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 Kunshan Visionox Display Co Ltd filed Critical Kunshan Visionox Display Co Ltd
Priority to EP14876888.0A priority Critical patent/EP3071002A4/en
Priority to JP2016558255A priority patent/JP2017500759A/ja
Priority to US15/109,423 priority patent/US20160330829A1/en
Priority to KR1020167019110A priority patent/KR20160099665A/ko
Publication of WO2015101256A1 publication Critical patent/WO2015101256A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0215—Grounding of printed circuits by connection to external grounding means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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

Definitions

  • the present invention relates to a flexible circuit board, and more particularly to a grounded flexible board that is in contact with a shield of a touch screen on a flexible circuit board and that prevents falling off.
  • the portion of the grounding soft board bonded to the shielding layer is generally straight (as shown in A of FIG. 1), and the bonding area 10 at the end is provided with a window leakage copper 11 inside, as shown in FIG.
  • the bonding area of the grounding soft board and the shielding layer is the area of the bonding area 10 and the copper leakage area 11 of the window, because the bonding area is small, the stress point is relatively concentrated, and the grounding soft board is in a straight strip shape, External force F (the direction of the arrow is the direction of the force) ⁇ , the direction of the force is single, and the direction of the force is along the direction of the body of the grounding soft board. Therefore, the grounding soft board that is in contact with the shielding layer is easy to fall off during bending and transportation.
  • the present invention provides a flexible circuit board including a base and a grounded soft board extending from the base, the grounded soft board including a board body connected to the base and The contact end is disposed at a contact end of the free end of the plate body, and the contact end comprises a bonding area and a copper leakage area disposed inside the bonding area, wherein the plate body has a curved shape.
  • the plate body is S-shaped or W-shaped.
  • the grounding soft board is used to contact the shielding layer of the touch screen, and the bonding area of the bonding area and the shielding layer is more than twice the bonding area of the copper leakage area and the shielding layer of the window.
  • the bonding zone is L-shaped, T-shaped or cross-shaped.
  • the bonding region and the copper leakage area of the window are coated with an anisotropic conductive film.
  • the present invention can avoid the connection by improving the shape of the grounded soft board by using a method of dispersing bending stress.
  • ground soft board falls off during the bending process and in contact with the shielding layer during transportation.
  • FIG. 1 is a schematic structural view of a current grounded flexible board in a straight strip shape
  • FIG. 2 is an enlarged view of a portion A in FIG. 1;
  • FIG. 3 is a schematic structural view of a grounded soft board in the present invention.
  • Figure 4 is an enlarged view of a portion B of Figure 3;
  • FIG. 5 is a view showing a force receiving direction of a grounded soft board in the present invention.
  • the flexible circuit board of the present invention comprises a base 1 and a grounding soft board B extending from the base 1.
  • the grounding soft board B is used for contacting the shielding layer of the touch screen, and the grounding soft board is used.
  • B includes a plate body 2 connected to the base portion 1 and a contact end disposed at a free end portion of the plate body 2, the contact end including a bonding region 20 and a window leakage copper region 21 disposed inside the bonding region 20, The bonding region 20 and the copper leakage region 21 of the window are coated with an anisotropic conductive film.
  • the bonding region 20 of the present invention may have an L shape, and the bonding of the present invention is compared to a square or rectangular bonding region.
  • the junction region 20 has a larger area, which can increase the area of the bonding of the grounding soft board B and the shielding layer, so that the bonding area of the bonding area 20 and the shielding layer is the bonding area of the copper leakage area 21 and the shielding layer of the window. More than 2 times, thereby increasing the adhesion between the grounding soft board B and the shielding layer, and avoiding the grounding soft board B from being separated from the shielding layer during transportation.
  • the bonding region 20 in the present invention is not limited to the L shape, and may have a shape such as a T shape or a cross shape which can increase the bonding area.
  • the plate body 2 of the grounding flexible board B of the present invention has a curved shape. As shown in FIG. 3 and FIG. 4, the board body 2 is S-shaped, and the grounding soft board B is subjected to an actual external force F, and the grounding soft board B is The F is dispersed along the tangential direction of the edge of the plate body 2 into bending stresses F1, F 2, F3, F4, and F5 in various directions (as shown in FIG. 5), so that the local force of the plate body 2 is weakened, so The grounding soft board B of the invention is subjected to bending during the bending and transportation process, and the grounding soft board B is adhered to the shielding layer. The knot is not easy to fall off.
  • the plate body 2 of the grounding flexible board B of the present invention is not limited to the S shape, and may have other curved shapes such as a W shape.
  • the invention improves the bonding area of the grounded soft board and the shielding layer and the shape of the soft board, and adopts a method of increasing the bonding force and dispersing the bending stress, thereby avoiding the grounding soft board during the bending process and during transportation.
  • the area in contact with the shield is peeled off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Structure Of Printed Boards (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

公开了一种柔性电路板。所述柔性电路板包括基部（1）及自所述基部（1）延伸的接地软板（B），所述接地软板（B）包括与所述基部（1）连接的板体（2）及设置于所述板体（2）自由端部的接触端，所述接触端包括粘结区（20）及设于粘结区（20）内部的开窗漏铜区（21），所述板体（2）为曲线形。

Description

一种柔性电路板 技术领域
[0001] 本发明有关一种柔性电路板， 特别是指一种柔性电路板上与触摸屏的屏蔽层接 触且防止脱落的接地软板。
背景技术
[0002] 目前， 在 FPC (Flexible Printed Circuit, 软性线路板） 外形、 结构及线路设计中
， 与屏蔽层粘结的接地软板部分外形一般为直条形 （如图 1中 A所示） ， 其端部 的粘结区 10内部设有幵窗漏铜区 11， 如图 2所示， 接地软板与屏蔽层粘结面积为 粘结区 10与幵窗漏铜区 11的面积， 因其粘结面积小， 受力点比较集中， 由于该 接地软板为直条形， 在受到外力 F (箭头方向为受力方向） 吋， 受力方向单一， 并且受力方向沿接地软板本体方向， 因此与屏蔽层接触的接地软板在有弯折和 运输过程中容易脱落。
技术问题
[0003] 有鉴于此， 本发明的主要目的在于提供一种可增大粘结力的柔性电路板。
问题的解决方案
技术解决方案
[0004] 为达到上述目的， 本发明提供一种柔性电路板， 所述柔性电路板包括基部及自 所述基部延伸的接地软板， 所述接地软板包括与所述基部连接的板体及设置于 所述板体自由端部的接触端， 该接触端包括粘结区及设于粘结区内部的幵窗漏 铜区， 所述板体为曲线形。
[0005] 所述板体为 S形或 W形。
[0006] 所述接地软板用于与触摸屏的屏蔽层接触， 所述粘结区与屏蔽层粘结面积是所 述幵窗漏铜区与屏蔽层粘结面积的 2倍以上。
[0007] 所述粘结区为 L形、 T形或十字形。
[0008] 所述粘结区及幵窗漏铜区上涂覆有异方性导电胶膜。
发明的有益效果 有益效果
[0009] 本发明通过改善接地软板的外形， 采用分散弯折应力的方法， 可避免接
[0010] 地软板在弯折过程中及运输过程中与屏蔽层接触的地方脱落。
对附图的简要说明
附图说明
[0011] 图 1为目前接地软板为直条形的结构示意图；
[0012] 图 2为图 1中 A部分放大图；
[0013] 图 3为本发明中的接地软板的结构示意图；
[0014] 图 4为图 3中 B部分放大图；
[0015] 图 5为本发明中的接地软板的受力方向图。
本发明的实施方式
[0016] 为便于对本发明的结构及达到的效果有进一步的了解， 现结合附图并举较佳实 施例详细说明如下。
[0017] 如图 3与图 4所示， 本发明的柔性电路板包括基部 1及自该基部 1延伸的接地软板 B， 该接地软板 B用于与触摸屏的屏蔽层接触， 接地软板 B包括与基部 1连接的板 体 2及设置于所述板体 2自由端部的接触端， 该接触端包括有粘结区 20及设于粘 结区 20内部的幵窗漏铜区 21， 该粘结区 20及幵窗漏铜区 21上涂覆有异方性导电 胶膜， 本发明的粘结区 20可为 L形， 相较于方形或矩形的粘结区， 本发明的粘结 区 20具有更大的面积， 可增大接地软板 B与屏蔽层粘结处的面积， 使粘结区 20与 屏蔽层粘结面积是幵窗漏铜区 21与屏蔽层粘结面积的 2倍以上， 从而增大了接地 软板 B与屏蔽层接触吋的粘结力， 可避免在运输过程中接地软板 B与屏蔽层脱离 。 本发明中的粘结区 20不限于 L形， 还可以为 T形、 十字形等其他可增大粘结面 积的形状。
[0018] 本发明的接地软板 B的板体 2为曲线形， 如图 3与图 4所示， 板体 2为 S形， 在接地 软板 B受到实际外力 F实吋， 接地软板 B将该 F实沿着板体 2边缘切线方向分散为各 个方向的弯折应力 Fl、 F2、 F3、 F4及 F5 (如图 5所示） ， 使板体 2局部受力减弱 ， 因此， 本发明的接地软板 B在弯折和运输过程受力吋， 接地软板 B与屏蔽层粘 结处不易脱落。 本发明的接地软板 B的板体 2不限于 S形， 还可为 W形等其他曲线 形状。
[0019] 本发明通过改善接地软板与屏蔽层粘结面积和软板的外形， 采用增大粘结力和 分散弯折应力的方法， 可避免接地软板在弯折过程中及运输过程中与屏蔽层接 触的地方脱落。
[0020] 以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保护范围。

Claims

权利要求书
[权利要求 1] 一种柔性电路板， 其特征在于， 所述柔性电路板包括基部及自所 述基部延伸的接地软板， 所述接地软板包括与所述基部连接的板 体及设置于所述板体自由端部的接触端， 该接触端包括粘结区及 设于粘结区内部的幵窗漏铜区， 所述板体为曲线形。
[权利要求 2] 如权利要求 1所述的柔性电路板， 其特征在于， 所述板体为 S形或
W形。
[权利要求 3] 如权利要求 1所述的柔性电路板， 其特征在于， 所述接地软板用于 与触摸屏的屏蔽层接触， 所述粘结区与屏蔽层粘结面积是所述幵 窗漏铜区与屏蔽层粘结面积的 2倍以上。
[权利要求 4] 如权利要求 3所述的柔性电路板， 其特征在于， 所述粘结区为 L形
、 T形或十字形。
[权利要求 5] 如权利要求 1所述的柔性电路板， 其特征在于， 所述粘结区及幵窗 漏铜区上涂覆有异方性导电胶膜。
PCT/CN2014/095332 2013-12-30 2014-12-29 一种柔性电路板 Ceased WO2015101256A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14876888.0A EP3071002A4 (en) 2013-12-30 2014-12-29 FLEXIBLE PRINTED CIRCUIT
JP2016558255A JP2017500759A (ja) 2013-12-30 2014-12-29 フレキシブルプリント配線板
US15/109,423 US20160330829A1 (en) 2013-12-30 2014-12-29 Flexible printed circuit
KR1020167019110A KR20160099665A (ko) 2013-12-30 2014-12-29 플랙시블 회로기판

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201320879733.8U CN203775513U (zh) 2013-12-30 2013-12-30 一种柔性电路板
CN201320879733.8 2013-12-30

Publications (1)

Publication Number Publication Date
WO2015101256A1 true WO2015101256A1 (zh) 2015-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/095332 Ceased WO2015101256A1 (zh) 2013-12-30 2014-12-29 一种柔性电路板

Country Status (7)

Country Link
US (1) US20160330829A1 (zh)
EP (1) EP3071002A4 (zh)
JP (1) JP2017500759A (zh)
KR (1) KR20160099665A (zh)
CN (1) CN203775513U (zh)
TW (1) TWM499734U (zh)
WO (1) WO2015101256A1 (zh)

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EP3071002A1 (en) 2016-09-21
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CN203775513U (zh) 2014-08-13
EP3071002A4 (en) 2016-12-07
TWM499734U (zh) 2015-04-21

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