JP2770673B2 - Fiber cable embedded printed wiring board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board used for signal transmission in a device, and more particularly to a fiber cable embedded printed wiring board suitable for high-speed signal transmission.

[0002]

2. Description of the Related Art Conventionally, printed wiring boards of this kind include:
Generally, a copper wiring pattern formed by etching a copper plate is provided, and a signal transmission in a printed wiring board is performed by the copper wiring pattern.

[0003]

In the conventional printed wiring board, when transmitting a high-speed electric signal, the thickness and thickness of the copper wiring pattern, the routing of the copper wiring pattern, There is a problem that it is complicated to secure a ground plane and the like, and for these reasons, a multilayer printed wiring board must be formed.

In view of the above, it is an object of the present invention to embed a fiber cable in a printed wiring board and to provide optical lenses at both ends of the fiber cable, so that signals can be transmitted and received within the apparatus regardless of the signal speed. It is another object of the present invention to provide a fiber cable embedded type printed circuit board which can be performed and can eliminate the complexity of designing a copper wiring pattern corresponding to the signal speed of the printed circuit board.

Another object of the present invention is to embed a fiber cable in a printed wiring board and to provide an optical transmitting element and an optical receiving element at both ends of the fiber cable, so that the signal in the apparatus can be transmitted regardless of the signal speed. It is another object of the present invention to provide a fiber cable embedded type printed wiring board capable of transmitting and receiving data and eliminating the complexity of designing a copper wiring pattern corresponding to the signal speed of the printed wiring board.

[0006]

SUMMARY OF THE INVENTION A fiber cable embedded printed wiring board according to the present invention comprises a printed wiring board,
A fiber cable embedded in the printed wiring board, a pair of optical lenses are connected to both ends fixed to the purine <br/> preparative wiring board of the fiber cable, one light Le
Transmission having an optical transmission element disposed in close proximity to a lens
And an optical receiving element arranged in close proximity to the other optical lens
An optical receiver having an optical transmitter and the optical transmitter;
A transmitter mounted on a printed circuit board, and the optical receiver
And a receiver mounted on the printed circuit board
And

Further, fiber cable embedded type printed circuit board of the present invention, a printed wiring board, a fiber cable embedded in the printed circuit board, is connected to one end of the fiber cable is fixed to the printed circuit board Optical transmission element and the other end of the fiber cable
Light receiving element connected to the printed circuit board and fixed to the printed circuit board
And an optical transmitter having the optical transmission element.
A transmission board mounted on a lint wiring board;
An optical receiver having an element is disposed on the printed wiring board.
And an attached receiver .

[0008]

In the fiber cable embedded printed wiring board of the present invention, when the transmitting board converts a high-speed electrical signal into an optical signal by the optical transmitting element of the optical transmitter and emits the optical signal, the optical signal emitted from the optical transmitting element becomes Is input from the optical lens to one end of the fiber cable, and is emitted from the optical lens at the other end through the fiber cable embedded in the printed wiring board.
The optical signal emitted from the optical lens is input to the optical receiving element, converted into an electric signal by the optical receiver, and sent to the receiving board.

Further, in the fiber cable embedded type printed wiring board of the present invention, when the transmitting board converts the high-speed electrical signal into an optical signal by the optical transmitting element of the optical transmitter and emits the same, the light emitted from the optical transmitting element is transmitted. The signal is directly input to one end of the fiber cable, and is directly input to the optical receiving element from the other end through the fiber cable embedded in the printed wiring board. The optical signal input to the optical receiving element is converted into an electric signal by the optical receiver and sent to the receiving board.

[0010]

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view showing a main part of a printed circuit board of a fiber cable embedded type according to a first embodiment of the present invention. The printed circuit board with embedded fiber cable according to the present embodiment includes a backboard printed circuit board (hereinafter simply referred to as a printed circuit board) 1, a fiber cable 2 embedded in the printed circuit board 1, and a fiber cable 2.
An optical transmitter 4 having optical lenses 3a and 3b connected to both ends of the printed circuit board 1 and fixed to the printed wiring board 1, and an optical transmitting element (light emitting element) 4a arranged close to the optical lens 3a
And an optical receiver 5 having an optical receiving element (light receiving element) 5a arranged close to the optical lens 3b, and a transmitting board 6 provided with the optical transmitter 4 and attached to the printed wiring board 1.
And a receiving board 7 provided with the optical receiver 5 and attached to the printed wiring board 1. The fiber cable 2 is configured to include one or a plurality of optical fibers.

Next, the operation of the thus constructed first embodiment of the fiber cable embedded printed circuit board will be described.

The transmission board 6 transmits the high-speed electric signal to the optical transmitter 4
Is converted into an optical signal by the optical transmitting element 4a and emitted.

The optical signal emitted from the optical transmitting element 4a is
The light is input to one end of the fiber cable 2 from the optical lens 3a, and is emitted from the optical lens 3b at the other end through the fiber cable 2 embedded in the printed wiring board 1.

The optical signal emitted from the optical lens 3b is input to the optical receiving element 5a, converted into an electric signal by the optical receiver 5, and sent to the receiving board 7.

As described above, signal transmission from the transmitting board 6 to the receiving board 7 is performed at a high speed by an optical signal. Note that the copper wiring pattern of the printed wiring board 1 can be used for transmission of a signal at a speed that does not require high-speed transmission by the fiber cable 2.

FIG. 2 is a sectional view showing a printed circuit board having a fiber cable embedded type according to a second embodiment of the present invention. The fiber cable embedded type printed wiring board of the present embodiment includes a printed wiring board 1, a fiber cable 2 embedded in the printed wiring board 1, and a fiber cable 2.
, An optical transmitting element 4a connected to one end of the fiber optic cable 2 and fixed to the printed wiring board 1, an optical receiving element 5a connected to the other end of the fiber cable 2 and fixed to the printed wiring board 1, and an optical transmitting element having the optical transmitting element 4a. A transmitting panel 6 for disposing the device 4,
Receiver board 7 in which optical receiver 5 having optical receiving element 5a is arranged
It is composed of Members corresponding to members in the fiber cable embedded type printed wiring board of the first embodiment shown in FIG. 1 are denoted by the same reference numerals.

Next, the operation of the fiber cable embedded type printed wiring board of the second embodiment configured as described above will be described.

The transmission board 6 transmits the high-speed electric signal to the optical transmitter 4
Is converted into an optical signal by the optical transmitting element 4a and emitted.

The optical signal emitted from the optical transmitting element 4a is
The light is directly input to one end of the fiber cable 2, and is directly input to the optical receiving element 5 a from the other end through the fiber cable 2 embedded in the printed wiring board 1.

The optical signal input to the optical receiving element 5a is converted into an electric signal by the optical receiver 5 and sent to the receiving board 7.

As described above, the signal transmission from the transmitting board 6 to the receiving board 7 is performed at a high speed by the optical signal. The transmission of a signal at a speed that does not require high-speed transmission by the fiber cable 2 is performed in the same manner as in the case of the fiber cable embedded type printed wiring board of the first embodiment shown in FIG. Wiring patterns can be used.

[0023]

As described above, according to the present invention, a fiber cable is embedded in a printed wiring board and connected to both ends of the fiber cable and fixed to the printed wiring board.
A pair of optical lenses and one optical lens
An optical transmitter having an optical transmitting element
An optical receiver having an optical receiving element disposed in contact with the optical receiver;
Transmitter with transmitter installed and mounted on printed circuit board
A panel and an optical receiver are installed and attached to a printed circuit board.
With the provision of a receiving board , signals can be transmitted and received within the device regardless of the signal speed, and the complexity of copper wiring pattern design corresponding to the signal speed of the printed wiring board is eliminated. There is an effect that can be.

Further, a fiber cable is embedded in a printed wiring board, and is connected to one end of the fiber cable.
An optical transmitter fixed to a printed circuit board and a fiber cable
Light connected to the other end of the cable and fixed to the printed circuit board
An optical transmitter having an optical transmitting element and a receiving element
The transmitter mounted on the printed circuit board and the optical receiver
Optical receiver installed on a printed circuit board
With the provision of a receiving board , signals can be transmitted and received within the device regardless of the signal speed, and the complexity of copper wiring pattern design corresponding to the signal speed of the printed wiring board is eliminated. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a fiber cable embedded printed wiring board according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a configuration of a fiber cable embedded type printed wiring board according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printed wiring board 2 Fiber cable 3a, 3b Optical lens 4 Optical transmitter 4a Optical transmitting element 5 Optical receiver 5a Optical receiving element 6 Transmitting board 7 Receiving board

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05K 7/02 H05K 7/14 H05K 1/02

Claims (2)

(57) [Claims] 1. A printed wiring board, near the fiber cable embedded in the printed wiring board, a pair of optical lenses are connected to both ends fixed to the printed wiring board of this fiber cable, the one optical lens Optical transmission element
And an optical receiving element arranged in close proximity to the other optical lens.
An optical receiver and the optical transmitter are arranged and attached to the printed circuit board.
The transmitter and the optical receiver are arranged and attached to the printed circuit board.
And a receiving board provided with the fiber cable. 2. A printed wiring board, a fiber cable embedded in the printed wiring board, and the optical transmission element is connected to one end of the fiber cable is fixed to the printed wiring board, the other end of the fiber cable Connected to the print distribution
An optical receiving element fixed to a line substrate, and an optical transmitter having the optical transmitting element,
A transmission board attached to a wiring board, and an optical receiver having the optical receiving element,
A fiber embeddable printed wiring board, comprising: a receiver mounted on the wiring board.