Nova Patents
JP2007123740A

Flexible board, optical transmission/reception module and optical transmission/reception device

Abstract

[Subject] The flexible substrate which makes it possible to control a characteristic impedance by high precision, and to make path loss of signal current small is offered. [Solution means] The flexible substrate 1 has micro strip line structure, and each wiring layer and each insulating layer are laminated up and down, and it is formed. The signal wire way 13 which has predetermined width is formed in the first wiring layer, and the grounding layer 14 is formed in the second wiring layer. The position which countered the signal wire way 13 through the second insulating layer of the grounding layer 14 formed in the second wiring layer is equipped with two or more grounding layer openings 14a by which the opening was carried out to the rectangle. Each grounding layer opening 14a -- the width of the signal wire way 13 -- predetermined quantity -- it being the position which has a long side and countered the signal wire way 13 through the second insulating layer, and, The wiring direction of the signal wire way 13 and a side longer than the width of the signal wire way 13 abbreviated-cross at right angles, and it is formed at the predetermined intervals so that the central part of the direction of the neighborhood longer than the width of the signal wire way 13 may be located at the abbreviated center of the signal wire way 13. [Selection figure] Fig. 1

JP2007123740A, drawing sheet 1
Sheet 1 of 28

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Term ended

Projected expiry passed 31 October 2025, 0.9 years ago.

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14 claims: 5 independent, 9 dependent

  1. 1
    In a flexible substrate comprising one or a plurality of signal lines, a dielectric layer and a ground conductor layer, the signal line and the ground conductor layer are formed at positions facing each other via the dielectric layer, the ground conductor layer. Is an opening region in which the ground conductor portion is not formed, which is arranged at a position facing one or a plurality of the signal lines via the dielectric layer at a predetermined interval with respect to the wiring direction of the signal line. Each of the openings has a width that is a predetermined amount longer than between both ends of the signal line, and both ends in the width direction longer than between both ends of the signal line are each of the signal line. A flexible substrate formed so as to be located on both outer sides, and ground conductor portions having a width equal to or larger than a predetermined length are formed on both sides of the opening along the wiring direction of the signal line . 単数又は複数の信号線路、誘電体層及び接地導体層を備え、前記信号線路及び前記接地導体層は、前記誘電体層を介して互いに対向した位置に形成されるフレキシブル基板において、 前記接地導体層は、前記誘電体層を介して、単数又は複数の前記信号線路に対向した位置に、前記信号線路の配線方向に対して所定の間隔で配置された、接地導体部が非形成となる開口領域を有する複数の開口部を備え、 前記各開口部は、前記信号線路の両端間より所定量長い幅を有し、前記信号線路の両端間より長い幅方向の両端部が、それぞれ前記信号線路の両外部に位置するように形成され、 前記開口部の両側に、前記信号線路の配線方向に沿って、所定の長さ以上の幅で接地導体部が形成される ことを特徴とするフレキシブル基板。
  2. 11
    In an optical transmission module that converts an electric signal into an optical signal and outputs it, an optical reception module that converts an optical signal into an electric signal and outputs it, and an optical transmission / reception module provided with an optical transmission / reception circuit board, the optical transmission module and the optical Each receiving module is connected to the optical transmission / reception circuit board via a flexible substrate, and each flexible board includes one or more signal lines, a dielectric layer and a ground conductor layer, and the signal line and the ground conductor layer. Are formed at positions facing each other via the dielectric layer, and the ground conductor layer is placed at a position facing one or more of the signal lines via the dielectric layer in the wiring direction of the signal line. A plurality of openings having an opening region in which the ground conductor portion is not formed are provided at predetermined intervals with respect to the signal line, and each of the openings has a width that is a predetermined amount longer than that between both ends of the signal line. , Both ends in the width direction longer than between both ends of the signal line are formed so as to be located on both outer sides of the signal line, and predetermined on both sides of the opening along the wiring direction of the signal line. An optical transmission / reception module characterized in that a ground conductor is formed with a width greater than or equal to the length. 電気信号を光信号に変換して出力する光送信モジュール、光信号を電気信号に変換して出力する光受信モジュール、及び光送受信回路基板を備えた光送受信モジュールにおいて、 前記光送信モジュール及び前記光受信モジュールは、それぞれフレキシブル基板を介して前記光送受信回路基板に接続され、 前記各フレキシブル基板は、単数又は複数の信号線路、誘電体層及び接地導体層を備え、 前記信号線路及び前記接地導体層は、前記誘電体層を介して互いに対向した位置に形成され、 前記接地導体層は、前記誘電体層を介して、単数又は複数の前記信号線路に対向した位置に、前記信号線路の配線方向に対して所定の間隔で配置された、接地導体部が非形成となる開口領域を有する複数の開口部を備え、 前記各開口部は、前記信号線路の両端間より所定量長い幅を有し、前記信号線路の両端間より長い幅方向の両端部が、それぞれ前記信号線路の両外部に位置するように形成され、 前記開口部の両側に、前記信号線路の配線方向に沿って、所定の長さ以上の幅で接地導体部が形成される ことを特徴とする光送受信モジュール。
  3. 12
    The optical transmission / reception circuit board is composed of a rigid substrate, and each of the flexible substrate and the optical transmission / reception circuit board is configured as a flex rigid substrate in which a flexible substrate and a rigid substrate are integrally formed. Described optical transmitter / receiver module. 前記光送受信回路基板はリジット基板により構成され、 前記各フレキシブル基板及び前記光送受信回路基板は、フレキシブル基板とリジッド基板が一体に形成されたフレックスリジッド基板として構成される ことを特徴とする請求項11記載の光送受信モジュール。
  4. 13
    The optical transmission / reception module is connected to an optical transmission module that converts an electric signal into an optical signal and outputs it, an optical reception module that converts an optical signal into an electric signal and outputs it, and an optical transmission / reception module provided with an optical transmission / reception circuit board. In an optical transmission / reception device having a parent substrate, the optical transmission module and the optical reception module are each connected to the optical transmission / reception circuit board via a flexible substrate, and the optical transmission / reception circuit board is connected to the parent substrate via the flexible substrate. Each of the flexible substrates is provided with one or more signal lines, a dielectric layer and a ground conductor layer, and the signal line and the ground conductor layer are formed at positions facing each other via the dielectric layer. The ground conductor layer is provided with ground conductor portions arranged at positions facing one or a plurality of the signal lines at predetermined intervals with respect to the wiring direction of the signal lines via the dielectric layer. A plurality of openings having non-forming opening regions are provided, and each opening has a width that is a predetermined amount longer than between both ends of the signal line, and both ends in the width direction longer than between both ends of the signal line. , Each of which is formed so as to be located on both outer sides of the signal line. An optical transmission / reception device characterized in that grounding conductor portions are formed on both sides of the opening along the wiring direction of the signal line with a width of a predetermined length or more. 電気信号を光信号に変換して出力する光送信モジュール、光信号を電気信号に変換して出力する光受信モジュール、及び光送受信回路基板を備えた光送受信モジュールと、前記光送受信モジュールが接続される親基板を有する光送受信装置において、 前記光送信モジュール及び前記光受信モジュールは、それぞれフレキシブル基板を介して前記光送受信回路基板に接続され、 前記光送受信回路基板はフレキシブル基板を介して前記親基板に接続され、 前記各フレキシブル基板は、単数又は複数の信号線路、誘電体層及び接地導体層を備え、 前記信号線路及び前記接地導体層は、前記誘電体層を介して互いに対向した位置に形成され、 前記接地導体層は、前記誘電体層を介して、単数又は複数の前記信号線路に対向した位置に、前記信号線路の配線方向に対して所定の間隔で配置された、接地導体部が非形成となる開口領域を有する複数の開口部を備え、 前記各開口部は、前記信号線路の両端間より所定量長い幅を有し、前記信号線路の両端間より長い幅方向の両端部が、それぞれ前記信号線路の両外部に位置するように形成され、 前記開口部の両側に、前記信号線路の配線方向に沿って、所定の長さ以上の幅で接地導体部が形成される ことを特徴とする光送受信装置。
  5. 14
    The optical transmission / reception circuit board is composed of a rigid substrate, and each of the flexible substrate and the optical transmission / reception circuit board is configured as a flex rigid substrate in which a flexible substrate and a rigid substrate are integrally formed. The optical transmitter / receiver described. 前記光送受信回路基板はリジット基板により構成され、 前記各フレキシブル基板及び前記光送受信回路基板は、フレキシブル基板とリジッド基板が一体に形成されたフレックスリジッド基板として構成される ことを特徴とする請求項13記載の光送受信装置。
Independent claims5