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Flexible printed circuit board and connection structure using the same

A flexible printing and circuit board technology, applied in the directions of printed circuits, printed circuits, printed circuit components, etc., can solve the problems of time required, insufficient wiring, low productivity of mobile phones, etc., and achieve the effect of preventing disconnection

Inactive Publication Date: 2010-01-13
SUMITOMO ELECTRIC PRINTED CIRCUITS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the above-mentioned flexible printed wiring board, there is a problem that the number of wirings is insufficient.
Therefore, two identical flexible printed wiring boards have been discussed, but in the limited space of the rotating hinge part of the mobile phone, it is difficult to arrange the two independent flexible printed wiring boards in a spiral shape for storage. The problem that it takes time to assemble and the productivity of the mobile phone is low

Method used

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  • Flexible printed circuit board and connection structure using the same
  • Flexible printed circuit board and connection structure using the same
  • Flexible printed circuit board and connection structure using the same

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0058] Using a single sided sheet in which copper foil with a thickness of 18 μm is laminated on one side of a polyimide film with a thickness of 12.5 μm as a base film through an epoxy resin adhesive layer with a thickness of 10 μm, the Copper foil patterning is formed on one side of the above-mentioned base film with figure 1 The terminal portions 15a to 15d and the conductor wirings 16a and 16b in planar shape are shown.

[0059] Next, an epoxy resin film with a thickness of 12.5 μm is laminated and bonded to the region of the above-mentioned base film where the conductor wirings 16a, 16b are formed through an epoxy resin adhesive layer with a thickness of 20 μm to form the covering conductor wirings 16a, 16b. The surface layer of 16b is then stamped to produce a figure 2 The precursor of the flexible printed wiring board 1 shown in the planar shape is folded in half along the folding line VL to manufacture figure 1 The flexible printed wiring board 1 shown. In additi...

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PUM

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Abstract

A flexible printed circuit board, wherein a first substrate member (1a) formed by joining connection parts (11) and (12) to each other through a flexible wiring member (101) and a second substrate member (1b) formed by joining connection parts (13) and (14) to each other through a flexible wiring member (102) are integrally joined to each other and a joined member is double-folded along a folding line (VL) and stacked on each other. For use, the joined member is wound on the shaft of a rotating hinge in a spiral state. The flexible wiring member (102) positioned on the outside when wound is increased in length than the flexible wiring member (101) positioned on the inside.

Description

technical field [0001] The present invention relates to a flexible printed wiring board for connecting two circuit components and a connection structure using the flexible printed wiring board. Background technique [0002] Recently, instead of the existing folding mobile phones, mobile phones HP having the following structure are becoming popular, such as Figure 6 As shown, the first main body HP1 configured with the self-control button HP1a and the like and the second main body HP2 configured with the display screen HP2a etc. are connected by a single-axis rotary hinge facing the axis XL in a direction orthogonal to the surface direction of the two main bodies, so that The two main bodies HP1 and HP2 are opened and closed by relatively rotating about the above-mentioned axis XL. [0003] In the mobile phone HP with this structure, in order to electrically connect the two main bodies HP1 and HP2, there is now a connecting member with the following structure, in which dozen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H05K1/00
CPCH05K1/028H05K2201/051H05K2201/055H05K1/02
Inventor 柏木修二永久保尊彦
Owner SUMITOMO ELECTRIC PRINTED CIRCUITS INC