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Bending-resistant flexible printed circuit board

A flexible printing and flexible circuit technology, applied in the directions of printed circuit components, electrical connection printing components, etc., can solve the problems of breakage and fracture at the incision on both sides, and achieve the advantages of not easy to break, increase the number of bending times, and enhance the bending resistance performance. Effect

Inactive Publication Date: 2010-07-14
浙江近点电子股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] When this kind of traditional flexible circuit board is in use, because the fingers on the front and the fingers on the back are flush, when it is bent, the stress point appears at the opening of the protective film, that is, at the connection end between the finger area on the back and the protective film. The opening has glue flow after lamination, and a cut with height difference is formed at the junction of glue flow and electroplating. When bending, the cuts on both sides are prone to breakage. Generally, it is easy to break after bending once.

Method used

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  • Bending-resistant flexible printed circuit board
  • Bending-resistant flexible printed circuit board
  • Bending-resistant flexible printed circuit board

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Embodiment 1

[0024] Figure 4 to Figure 6 A specific embodiment of the invention is shown in which Figure 4 is a front view of the present invention; Figure 5 yes Figure 4 The schematic diagram of the cross-sectional structure of the bending-resistant flexible printed circuit board shown; Figure 6 yes Figure 4 Reverse view of flex-resistant flexible printed wiring board shown.

[0025] This embodiment is a bending-resistant flexible printed circuit board, including a finger area 1 and a flexible circuit area 2, fingers 10 are provided on the front and back of the finger area 1; The connection line o of the back finger area 12 and the connection line o at the junction of the flexible circuit area 2 are staggered. A protective film 3 is provided on the reverse side of the flexible circuit area 2 , and the outer end of the protective film 3 is in contact with the inner end of the finger area 12 on the reverse side.

[0026] See figure 2 As shown, the outer ends of the finger regi...

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Abstract

The invention discloses a bending-resistant flexible printed circuit board. The bending-resistant flexible printed circuit board comprises a finger area and a flexible circuit area, wherein the front surface and the back surface of the finger area are provided with fingers; and the connecting line at the junction of a front finger area and the flexible circuit area is staggered from that of a back finger area and the flexible circuit area. The shear stress lines on the front surface and the back surface are different during bending the bending-resistant flexible printed circuit board, which enhances the bending resistance.

Description

technical field [0001] The invention belongs to the technical field of flexible circuit board structure design, and in particular relates to a bending-resistant flexible printed circuit board. Background technique [0002] Flexible printed circuit boards (FPC for short) have the advantages of high wiring density, light weight, thin thickness, small wiring space restrictions, and high flexibility. communication products, displays and consumer electronics and other fields. [0003] The flexible circuit board generally includes gold fingers for electrical connection with the outside world. When installed and used, it is generally necessary to bend the flexible circuit board to electrically connect it with the external circuit. In the existing design, the length of the front and back of the gold finger at the finger part is the same. Compared with the rest of the printed circuit area, the gold finger area has obvious differences in hardness and strength, and also has an obvious...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/11H05K1/02
Inventor 金花卢亚兰王峰
Owner 浙江近点电子股份有限公司
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