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Hollow-out flexible printed circuit board

A flexible printing and circuit board technology, which is applied in the fields of printed circuit, printed circuit manufacturing, electrical components, etc., can solve the problems that the hard board cannot be flattened, the weight of the product is increased, the AG wire is broken, etc., and the film-to-film pressure screen can be realized Excellent technology, good heat dissipation performance, and the effect of reducing the size

Active Publication Date: 2009-10-07
KUSN YIFUDA ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional PCB board is a hard board, because of its own characteristics that the hard board cannot be bent, so it will inevitably occupy a certain amount of space and increase the weight of the product. The two disadvantages have restricted the development of the product in the direction of thinness and fineness. strategy
In addition, from the perspective of technology, the mobile phone touch screen adopts the process of pressing AG wires to achieve connection. If the hard board is too thick, it cannot be flattened after pressing, and the steps generated are large, and the AG wires will break; in addition, the market The demand for continuous refinement, the general hollow flexible printed circuit board is restricted by the use due to its thickness

Method used

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specific Embodiment approach

[0019] figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; figure 2 It is a schematic side view of an embodiment of the present invention.

[0020] Such as figure 1 and figure 2 As shown, a hollow flexible printed circuit board includes a substrate 1 and a circuit formed thereon. The substrate 1 is pure copper foil. There is a pattern forming a line on the upper surface of the pattern, and the top surface of the pattern is provided with a PI cover film 2 on the upper surface that only exposes the opening 4 of the upper solder joint. The PI cover film 2 on the upper surface is provided with a PI cover film reinforcement 5. Both PI cover films 2, 2' and PI cover film reinforcement 5 contain Adhesive adhesive 3.

[0021] The above-mentioned upper surface and bottom surface PI covering films 2, 2' and PI covering film reinforcement 5 can also be polyester films.

[0022] First, the substrate 1 is cut, the bottom surface is ...

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Abstract

The invention discloses a hollow-out flexible printed circuit board, which comprises a base plate and circuits formed on the base plate. The hollow-out flexible printed circuit board is characterized in that the base plate adopts pure copper foil; a layer of thin polymer film with welding point openings is arranged on the bottom surface of the base plate; patterns forming the circuits are arranged on the upper surface of the base plate; and a thin polymer film with only the welding point openings in the upper layer being exposed is arranged above the patters. The hollow-out flexible printed circuit board can be freely bent, folded, wound, moved and stretched in the three dimensional space randomly, the heat dispersion is good, the flexible printed circuit board can be utilized to reduce the volume, and the light weight, the miniaturization and the slimming can be realized, thereby achieving the advantage of connection integration of element devices and conducting wires, and the product is equal to a single-sided flexible printed circuit board, the thickness is thinner, and the film-to-film screen pressing process is realized.

Description

technical field [0001] The invention relates to a flexible circuit board, in particular to a hollow flexible printed circuit board suitable for a touch screen of a mobile phone. Background technique [0002] As we all know, with the development of science and technology, applied electronic products are gradually developing in the direction of lightness and multi-function, especially with the development of communication technology, mobile phones have become an indispensable part of people's daily life, and people's personalization of mobile phones Requirements continued to increase, and mobile phones with touch screens followed. The traditional PCB board is a hard board, because of its own characteristics that the hard board cannot be bent, so it will inevitably occupy a certain amount of space and increase the weight of the product. The two disadvantages have restricted the development of the product in the direction of thinness and fineness. strategy. In addition, from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/00H05K3/00
Inventor 陆申林彭罗华王恒忠汤彩明耿侠丁毅
Owner KUSN YIFUDA ELECTRONICS
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