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High-speed shielded flat cable

A flat cable, shielded technology, applied in the field of high-speed shielded flat cables, can solve the problem of poor high frequency characteristics, and achieve the effect of reducing the number of cores

Inactive Publication Date: 2011-04-13
OKI ELECTRICAL CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since it is not connected to the shielding member 7' through the ground wire, each balanced pair of shielding members and the analog coaxial cannot be configured, so there is a problem of poor high-frequency characteristics.

Method used

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  • High-speed shielded flat cable
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  • High-speed shielded flat cable

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0037] Such as figure 1 As shown, a high-speed shielded flat cable 1A according to the first embodiment has a signal line S1 whose outer periphery of a conductor 2 is covered with an outer peripheral insulator 4, and a ground wire G1 whose outer periphery of the conductor 2 is covered with a conductive resin 5, and is used for balancing For balanced transmission, two signal lines S1, S1 are arranged side by side in the center, and ground lines G1, G1 are arranged side by side on both sides, thereby forming a basic unit (G1, S1, S1, G1). Then, the basic units are arranged so that one or more of the substrate units are arranged side by side, and the outer peripheral insulators 4 of the adjacent signal lines S1, S1 are bonded or welded together to form the flat cable 6 . In addition, shielding members 7, 7 are closely attached to the upper and lower sides of the flat cable 6, respectively, and the ground wires G1, G1 on both sides are electrically connected to the upper and lower ...

no. 2 approach

[0040] figure 2 is a configuration sectional view of a high-speed shielded flat cable according to a second embodiment of the present invention. Such as figure 2 As shown, the high-speed shielded flat cable 1B of the second embodiment uses the signal line S1 and the ground line G1 having the same structure as the first embodiment, and when used for balanced transmission, two signal lines S1 and S1 are arranged side by side in the center. , and the ground wires G1 and G1 are arranged side by side on both sides thereof, thereby constituting the basic unit. In the basic unit, the outer peripheral insulators 4 of adjacent signal lines S1 , S1 are bonded or welded to each other to form a flat cable 6 . Furthermore, shielding members 7 , 7 are provided on the upper and lower sides of the flat cable 6 in close contact with each other, and the ground wires G1 , G1 on both sides are electrically connected to the upper and lower shielding members 7 , 7 .

[0041] The high-speed shi...

no. 3 approach

[0047] Fig. 3 is a cross-sectional view showing the structure of a high-speed shielded flat cable according to a third embodiment of the present invention. Such as Figure 3A As shown, the high-speed shielded flat cable 1C of the third embodiment has a signal line S1 whose outer periphery of a conductor 2 is covered with an outer peripheral insulator 4 and a ground wire G1 whose outer periphery of the conductor 2 is covered with a conductive resin 5, and is used for unbalanced transmission. In the case of (unbalanced transmission), the ground lines G1 and G2 are arranged in parallel on both sides of the signal line S1 arranged in the center, thereby constituting a basic unit (G1, S1, G1). Further, the basic units are arranged side by side so that one or more of the substrate units are arranged side by side, and the outer peripheral insulators 4 of the adjacent signal lines S1 , S1 are bonded or welded to each other to form the flat cable 6 . In addition, shielding members 7, ...

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Abstract

A high-speed shielded flat cable is provided with a flat cable configured by connecting at least one signal line formed by covering the outer periphery of a conductor with an outer peripheral insulator and plural ground lines each formed by covering the outer periphery of a conductor with a conductive resin in a plane, and shield members closely attached to the top and bottom of the flat cable. The ground lines are disposed on both sides in the width direction of the flat cable and electrically connected to the upper and lower shield members. The flat cable is vertically and laterally insulated from external noise since the ground lines on both sides are electrically connected to the upper and lower shield members, whereby the flat cable is insulated by only the shield members without using a sheathe.

Description

technical field [0001] The present invention relates to a high-speed shielded flat cable capable of handling high-speed transmission. Background technique [0002] At present, the application of flat cables as multi-core, short and high-speed wiring materials used for high-speed wiring in equipment of imaging devices is increasing. Although there are FPC (Flexible Printed Circuit) and FFC (Flexible Flat Cable) as flat cables, the application of flat cables has been considered in consideration of the ease of handling of branching and terminal processing, the reliability of the connector part, and the price. research discussion. Examples of conventional shielded flat cables include those disclosed in Japanese Utility Model Laid-Open No. 5-11217. Contents of the invention [0003] Figure 10 It is a structural cross-sectional view of a conventional shielded flat cable 1'. Such as Figure 10 As shown, the structure of the existing shielded flat cable 1' is that the outer si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/08H01B7/00H01B7/02H01B7/17H01B11/00H01B11/06
CPCH01B7/0861
Inventor 中村政宣长谷川茂巳岩渊昌广
Owner OKI ELECTRICAL CABLE
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