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Flexible printed circuit board and terminal

A flexible printed circuit, flexible circuit board technology, applied in the direction of printed circuit parts, circuits, electrical components, etc., can solve the problems of reduced assembly reliability, flexible printed circuit board tearing, high welding strength requirements, etc., to achieve guaranteed strength and flatness, improve reliability, increase the effect of welding strength

Active Publication Date: 2012-04-18
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this type of device may be affected by external forces, such as: the interface device needs to be plugged and pushed and pulled, so the welding strength of the through-hole soldering end is required to be high
The flexible printed circuit board itself is thinner and has a certain degree of bending flexibility, and the bonding force between the copper foil and the substrate on the flexible printed circuit board is also low. Therefore, the through-hole reflow soldering device is directly assembled on the flexible printed circuit board. After being attached, the flexible printed circuit board can be torn when it is subjected to a very small external force, resulting in reduced assembly reliability of the through-hole reflow soldering device on the flexible printed circuit board

Method used

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  • Flexible printed circuit board and terminal
  • Flexible printed circuit board and terminal
  • Flexible printed circuit board and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment provides a flexible printed circuit board, such as figure 1 As shown: it includes a flexible circuit board layer 1, a reinforcing plate 2 is provided on one side of the flexible circuit board layer, and a through hole is provided on the flexible printed circuit board corresponding to the position of the welding terminal 5 on the through-hole reflow soldering device 4 3. The through hole 3 passes through the flexible circuit board layer 1 and the reinforcement board 2 .

[0016] Since one side of the flexible circuit board layer 1 is provided with a reinforcing plate 2, the strength and flatness of the flexible circuit board layer 1 can be guaranteed. The welding end 5 corresponding to the through-hole reflow soldering device 4 on the flexible printed circuit board is provided with a through hole 3, and the through hole 3 passes through the flexible circuit board layer 1 and the reinforcing plate 2, when the through-hole reflow soldering device 4 is solde...

Embodiment 2

[0020] This embodiment provides a flexible printed circuit board, such as figure 2 As shown, the flexible printed circuit board includes a flexible circuit board layer 6 , and one side of the flexible circuit board layer 6 is provided with a reinforcing plate 7 at a part corresponding to the entire through-hole reflow soldering device 9 . The flexible printed circuit board is provided with a through hole 8 corresponding to the soldering end 10 of the through-hole reflow soldering device 9 , and the through hole 8 passes through the flexible circuit board layer 6 and the reinforcement board 7 . The reinforcing plate 7 must be made of solderable materials, such as: nickel nickel, brass with a tin-plated surface and a tin-plated thickness of 5um or more, tinplate with a tin-plated surface with a tin-plated thickness of 105um, tin-plated surface with a tin-plated thickness of 5um Copper-zinc alloy, tin-plated iron-nickel alloy or stainless steel with nickel-tin plating.

[0021]...

Embodiment 3

[0024] An embodiment of the present invention provides a terminal, the terminal includes a flexible printed circuit board, a reinforcement board is provided on one side of the flexible circuit board layer, and a through-hole reflow soldering device is provided on the flexible printed circuit board. A through hole for soldering at the solder end, and the through hole passes through the flexible circuit board layer and the reinforcement board. The terminal adopts the flexible printed circuit board to realize corresponding functions, and the terminal may be a mobile phone, MP3, notebook computer, liquid crystal display, etc.

[0025] When the through-hole reflow soldering device is assembled on the flexible printed circuit board, the soldering end of the through-hole reflow soldering device is soldered on the through hole of the flexible printed circuit board. The through-hole reflow soldering device is electrically connected to the flexible circuit board layer through the throug...

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PUM

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Abstract

The invention discloses a flexible printed circuit board and a terminal and relates to the technical field of the flexible printed circuit boards; the problem that the welding of a reflow soldering device of a through hole on the flexible printed circuit board has low reliability in the prior art is solved. The flexible printed circuit board comprises a flexible circuit board layer, one side of the flexible circuit board layer is provided with a stiffening plate, and a through hole is arranged on the flexible printed circuit board for welding a welding end on the reflow soldering device of the through hole, and the through hole penetrates through the flexible printed circuit board and the stiffening plate. The invention is mainly applied to the flexible printed circuit board.

Description

technical field [0001] The invention relates to the technical field of flexible printed circuit boards, in particular to a flexible printed circuit board and a terminal. Background technique [0002] Flexible printed circuit boards have the advantages of being bendable and taking up little space, and have been widely used in consumer electronics products that require bending and ultra-thinness, such as folding mobile phones, notebook computers, hinges of sliding mobile phones, and sliding areas. connections, ultra-thin keyboard boards, LCD modules, digital video cameras, etc. [0003] Electronic products that use flexible printed circuit boards to achieve specific functions usually require electronic devices with corresponding functions to be assembled on flexible printed circuit boards. At present, some devices have been assembled on flexible printed circuit boards using surface mount technology, such as most Chip devices, area array devices and board-to-board connector de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/492H05K1/02
Inventor 钟绩臻丁海幸
Owner HUAWEI DEVICE CO LTD