JP2004281252A - Flexible printed wiring board and portable telephone terminal - Google Patents

Flexible printed wiring board and portable telephone terminal Download PDF

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Publication number
JP2004281252A
JP2004281252A JP2003071559A JP2003071559A JP2004281252A JP 2004281252 A JP2004281252 A JP 2004281252A JP 2003071559 A JP2003071559 A JP 2003071559A JP 2003071559 A JP2003071559 A JP 2003071559A JP 2004281252 A JP2004281252 A JP 2004281252A
Authority
JP
Japan
Prior art keywords
wiring board
printed wiring
flexible printed
double
dome switch
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.)
Pending
Application number
JP2003071559A
Other languages
Japanese (ja)
Inventor
Mayumi Kanayama
真由美 金山
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite 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 Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP2003071559A priority Critical patent/JP2004281252A/en
Publication of JP2004281252A publication Critical patent/JP2004281252A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-sided flexible printed wiring board which mounts dome-switches that give a light clicking feeling on a key board of a portable telephone terminal or the like. <P>SOLUTION: In the double-sided flexible printed wiring board having conductor-circuits mounting the dome-switches, (1) the conductor width of the conductor-circuit on the opposite side to a region where a dome-switch is mounted encompasses the entire projection on the opposite side of the region where the dome-switch is mounted, and (2) the conductor-circuit encompassing the entire projection on the opposite side of the region where the dome-switch is mounted has a cross-hatched pattern. The portable telephone terminal mounts the double-sided flexible printed wiring board described in the above (1) and (2). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、ドームスイッチを搭載する導体回路を有する両面フレキシブルプリント配線板に関するものである。
【０００２】
【従来の技術】
近年における携帯電話のめざましい普及に伴い、更なる情報端末への進化の為高機能と高品質が求められている。また、携帯電話のドームスイッチ部にはクリック感触、照光、耐久性、耐環境性等の特性が求められている。その中で、ドームスイッチを搭載する導体回路を有する両面フレキシブルプリント配線板は、そのドームスイッチのクリック感、精度、フレキシブルプリント配線板の適度な硬さ、スイッチ部の平滑さが求められている。
従来、ドームスイッチを搭載する導体回路が設計された両面フレキシブルプリント配線板にあっては、ドームスイッチ搭載領域の反対面にも部品搭載領域よりも狭い導体回路が複数本設けられており、その導体回路の凹凸がドームスイッチ搭載面の導体回路に凹凸を発生させ、それがドームスイッチのクリック感を悪くする。またドームスイッチ搭載領域の反対面にある導体回路がない場合には、フレキシブルプリント配線板の剛性が十分でなく軽快なクリック感が得られずスイッチが完全に作動しているかどうか確認が取れないなどの問題があった。
【０００３】
【特許文献１】
特開平１０−０１２０８８号公報
【０００４】
【発明が解決しようとする課題】
本発明は、ドームスイッチを搭載する導体回路を有する両面フレキシブルプリント配線板において、携帯電話端末などのキーボード部のドームスイッチの軽快なクリック感をもたせた両面フレキシブルプリント配線板を提供することにある。
【０００５】
【課題を解決するための手段】
（１）ドームスイッチを搭載する導体回路を有する両面フレキシブルプリント配線板において、前記ドームスイッチ搭載領域の反対面にある導体回路の導体幅が、前記ドームスイッチ搭載領域を反対面に投影した全てを含む導体回路であることを特徴とする両面フレキシブルプリント配線板、
（２）両面フレキシブルプリント配線板において、前記ドームスイッチ搭載領域を反対面に投影した全てを含む導体回路が、クロスハッチングパターンである１項記載の両面フレキシブルプリント配線板、
（３）１項又は２項記載の、両面フレキシブルプリント配線板を搭載したことを特徴とする携帯電話端末、
である。
【０００６】
【発明の実施の形態】
以下に、本発明について説明する。
本発明の両面フレキシブルプリント配線板は、ドームスイッチの搭載領域の反対面にドームスイッチ搭載領域と同じ導体巾又はそれ以上の導体巾を設けることを特徴とする両面フレキシブルプリント配線板である。ドームスイッチ搭載領域の反対面に導体回路がないと、両面フレキシブルプリント配線板の適度な剛性や平滑さが損なわれ、クリック感が失われる。
【０００７】
前記ドームスイッチ搭載領域の反対面に設ける導体巾は、前記搭載領域と同等またはそれ以上の大きさであり、形状は前記ドームスイッチの搭載領域にに合わせて設計するのがよい。前記ドームスイッチ搭載領域の反対面に設ける導体巾は必要によりクロスハッチングパターンとするのがより望ましいが、その選定はフレキシブルプリント配線板の用途や重量を考慮し行う。
【０００８】
本発明による前記ドームスイッチ搭載領域の反対面に導体回路を設けさらにその形状をクロスハッチングすることにより、両面フレキシブルプリント配線板にドームスイッチのクリック感を保たせるための剛性と平滑さを持たせることが可能となる。
【０００９】
【実施例】
実施例
本発明による、ドームスイッチ搭載領域の反対面に導体回路を設けた形状を図１に示した。導体回路を設けることにより、両面フレキシブルプリント配線板に剛性と平滑性を持たせることにより、軽快なクリック感が得られた。
【００１０】
比較例
従来技術の一例である、ドームスイッチ搭載領域の反対面に導体回路を設けない形状を図２に示した。両面フレキシブルプリント配線板に剛性がないことにより、軽快なクリック感が得られずスイッチが完全に作動しているかどうか確認が取れなかった。
【００１１】
【発明の効果】
本発明の両面フレキシブルプリント配線板により、携帯電話端末などのキーボード部のドームスイッチの軽快なクリック感を得ることが可能となった。
【図面の簡単な説明】
【図１】本発明による、ドームスイッチ搭載領域の反対面に導体回路も設けた形状を説明する断面図。
【図２】従来技術の一例である、ドームスイッチ搭載領域の反対面に導体回路を設けない形状を説明する断面図。
【符号の説明】
１．ドームスイッチ搭載領域
２．押さえシート
３．ドームスイッチ
４．ドームスイッチ搭載面の導体回路
５．絶縁層フィルム
６．ドームスイッチ搭載領域反対面の導体回路
７．絶縁被覆[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a double-sided flexible printed wiring board having a conductor circuit on which a dome switch is mounted.
[0002]
[Prior art]
With the remarkable spread of mobile phones in recent years, high functionality and high quality are required for further evolution to information terminals. In addition, the dome switch portion of the mobile phone is required to have characteristics such as click feeling, illumination, durability, and environmental resistance. Among them, a double-sided flexible printed wiring board having a conductor circuit on which a dome switch is mounted is required to have a click feeling, accuracy, appropriate hardness of the flexible printed wiring board, and smoothness of a switch portion of the dome switch.
Conventionally, in a double-sided flexible printed wiring board on which a conductor circuit on which a dome switch is mounted is designed, a plurality of conductor circuits narrower than the component mounting area are provided on the opposite surface of the dome switch mounting area, and Irregularities in the circuit cause irregularities in the conductor circuit on the surface on which the dome switch is mounted, which degrades the clicking feeling of the dome switch. Also, if there is no conductor circuit on the opposite side of the dome switch mounting area, the rigidity of the flexible printed wiring board is not enough, a light click feeling can not be obtained, and it can not be confirmed whether the switch is fully operated etc. There was a problem.
[0003]
[Patent Document 1]
JP-A-10-012088
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a double-sided flexible printed wiring board having a conductor circuit on which a dome switch is mounted.
[0005]
[Means for Solving the Problems]
(1) In a double-sided flexible printed wiring board having a conductor circuit on which a dome switch is mounted, the conductor width of the conductor circuit on the opposite side of the dome switch mounting area includes all of the projection of the dome switch mounting area on the opposite side. A double-sided flexible printed wiring board characterized by being a conductor circuit,
(2) The double-sided flexible printed wiring board according to (1), wherein in the double-sided flexible printed wiring board, the conductor circuit including all of the dome switch mounting area projected on the opposite surface is a cross hatching pattern.
(3) A mobile phone terminal comprising the double-sided flexible printed wiring board according to the above item 1 or 2,
It is.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described.
The double-sided flexible printed wiring board according to the present invention is a double-sided flexible printed wiring board characterized in that a conductor width equal to or larger than that of the dome switch mounting area is provided on a surface opposite to the dome switch mounting area. If there is no conductor circuit on the opposite side of the dome switch mounting area, the appropriate rigidity and smoothness of the double-sided flexible printed wiring board are impaired, and the click feeling is lost.
[0007]
The conductor width provided on the opposite surface of the dome switch mounting area is equal to or larger than the mounting area, and the shape is preferably designed according to the mounting area of the dome switch. The width of the conductor provided on the opposite surface of the dome switch mounting area is more preferably a cross hatching pattern as necessary, but the selection is made in consideration of the use and weight of the flexible printed wiring board.
[0008]
A conductor circuit is provided on the opposite surface of the dome switch mounting area according to the present invention, and the shape thereof is cross-hatched, so that the double-sided flexible printed wiring board has rigidity and smoothness for maintaining a click feeling of the dome switch. Becomes possible.
[0009]
【Example】
Embodiment FIG. 1 shows a configuration in which a conductor circuit is provided on the opposite surface of the dome switch mounting area according to the present invention. By providing the conductor circuit, the double-sided flexible printed wiring board was given rigidity and smoothness, so that a light click feeling was obtained.
[0010]
Comparative Example FIG. 2 shows an example of the prior art, in which a conductor circuit is not provided on the opposite surface of the dome switch mounting area. Due to the lack of rigidity of the double-sided flexible printed wiring board, a light click feeling was not obtained and it was not possible to confirm whether the switch was fully operated.
[0011]
【The invention's effect】
The double-sided flexible printed wiring board of the present invention makes it possible to obtain a light click feeling of a dome switch of a keyboard portion of a mobile phone terminal or the like.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a shape in which a conductor circuit is also provided on a surface opposite to a dome switch mounting area according to the present invention.
FIG. 2 is a cross-sectional view illustrating a shape in which a conductor circuit is not provided on a surface opposite to a dome switch mounting area, which is an example of a conventional technique.
[Explanation of symbols]
1. 1. Dome switch mounting area Holding sheet 3. Dome switch4. 4. Conductor circuit on dome switch mounting surface 5. Insulating layer film 6. Conductor circuit on the opposite side of the dome switch mounting area Insulation coating

Claims (3)

ドームスイッチを搭載する導体回路を有する両面フレキシブルプリント配線板において、前記ドームスイッチ搭載領域の反対面にある導体回路の導体幅が、前記ドームスイッチ搭載領域を反対面に投影した全てを含む導体回路であることを特徴とする両面フレキシブルプリント配線板。In a double-sided flexible printed wiring board having a conductor circuit on which a dome switch is mounted, the conductor width of the conductor circuit on the opposite surface of the dome switch mounting region is a conductor circuit including all of the dome switch mounting region projected on the opposite surface. A double-sided flexible printed wiring board characterized by the following. 両面フレキシブルプリント配線板において、前記ドームスイッチ搭載領域を反対面に投影した全てを含む導体回路が、クロスハッチングパターンである請求項１記載の両面フレキシブルプリント配線板。2. The double-sided flexible printed wiring board according to claim 1, wherein in the double-sided flexible printed wiring board, a conductor circuit including all of the dome switch mounting area projected on the opposite surface is a cross hatching pattern. 請求項１又は２記載の、両面フレキシブルプリント配線板を搭載したことを特徴とする携帯電話端末A mobile phone terminal comprising the double-sided flexible printed wiring board according to claim 1 or 2.
JP2003071559A 2003-03-17 2003-03-17 Flexible printed wiring board and portable telephone terminal Pending JP2004281252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003071559A JP2004281252A (en) 2003-03-17 2003-03-17 Flexible printed wiring board and portable telephone terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003071559A JP2004281252A (en) 2003-03-17 2003-03-17 Flexible printed wiring board and portable telephone terminal

Publications (1)

Publication Number Publication Date
JP2004281252A true JP2004281252A (en) 2004-10-07

Family

ID=33287972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003071559A Pending JP2004281252A (en) 2003-03-17 2003-03-17 Flexible printed wiring board and portable telephone terminal

Country Status (1)

Country Link
JP (1) JP2004281252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101388589B1 (en) 2012-12-28 2014-04-23 박경춘 Membrane switch module and manufacturing method of the said

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101388589B1 (en) 2012-12-28 2014-04-23 박경춘 Membrane switch module and manufacturing method of the said

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