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Flexible printing wiring board, method for manufacturing the same, and flexible printing wiring board for hard disc device

A technology of flexible printing and manufacturing methods, applied in the direction of printed circuit manufacturing, printed circuits, measuring devices, etc., can solve problems such as burrs or dirt, contact of cut-off part terminals, etc., and achieve the effect of simple electrical inspection

Inactive Publication Date: 2013-10-16
SUMITOMO ELECTRIC PRINTED CIRCUITS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for electrical inspection, it is necessary to cut off the plated lead part, and if cutting with a die, etc., terminal contact, burrs, or dirt may occur on the cut part

Method used

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  • Flexible printing wiring board, method for manufacturing the same, and flexible printing wiring board for hard disc device
  • Flexible printing wiring board, method for manufacturing the same, and flexible printing wiring board for hard disc device
  • Flexible printing wiring board, method for manufacturing the same, and flexible printing wiring board for hard disc device

Examples

Experimental program
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Effect test

Embodiment Construction

[0037] figure 1 It is a plan view which shows the flexible printed wiring board sheet 50 in embodiment of this invention. The flexible printed wiring board 10 is a flexible printed wiring board for hard disk devices, and its outline is shown by a rectangular dotted line. exist figure 1 In the flexible printed wiring board sheet 50, the flexible printed wiring board 10 is arranged to be aligned horizontally and vertically parallel to the edge, but it is not necessary to align, but to make the same ends face each other, relative to the sheet or the outer cover insulating layer 3 The edges are arranged obliquely. Moreover, you may arrange|position obliquely with respect to the plating frame 21 demonstrated later. exist figure 1 In , the wiring 11 of the flexible printed wiring board 10 is shown by a single thick line, but in more detail, it is as follows figure 2 As shown, for example, three or more wires are arranged in parallel. The front end portion of the wiring 11 is ...

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PUM

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Abstract

The invention provides a flexible printing wiring board, a method for manufacturing the same, and the flexible printing wiring board for a hard disc device. The problems, like burring, can not occur when the plating lead is cut and can be detected electrically at the state of board. The board comprises a plating frame (21) and a plurality of flexible printing wiring plates (10), and is characterized in that the flexible printing wiring plate comprises a stainless steel foil (1), a base insulating layer (2), a wiring (11), a plating lead part (11k) extending from the wiring and connected with the plating frame, and a housing insulating layer (3) for covering above components, wherein the housing insulating layer covers the plating frame and is distributed on the board, in the plurality of flexible printing wiring plates, the part of the housing insulating layer covering the plating lead part is removed, thus forming the root exposure part (K).

Description

technical field [0001] The present invention relates to a flexible printed wiring board sheet (sheet having multi-flexible printed circuit board) and a manufacturing method thereof, and a flexible printed wiring board sheet for a hard disk device. Background technique [0002] In the wiring board (hereinafter referred to as "head wiring board") and the like that integrate the support body (metal foil) for supporting the magnetic head of the hard disk device and the wiring for signal transmission (hereinafter referred to as "head wiring board"), and the perpendicular magnetic recording method Corresponding to the increase in information density, etc., the density of wiring is also high. The supporting body of the magnetic head wiring board is manufactured using a thin stainless steel plate (foil) through processes such as etching and plating. In the above steps, accidental disconnection or short circuit between fine wirings may occur in the wiring portion. The present situa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H05K3/00G11B5/48G01R31/02
Inventor 下村哲也松冈彻
Owner SUMITOMO ELECTRIC PRINTED CIRCUITS INC