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Flexible circuit board and mobile terminal

A flexible circuit board, radio frequency line technology, applied in circuit devices, printed circuits, printed circuit components and other directions, can solve the problems affecting the transmission of radio frequency signals, the impedance of radio frequency signals is easily mismatched, and the transmission loss is reduced, so as to improve the transmission quality. , the effect of eliminating transmission loss and improving user experience

Pending Publication Date: 2021-11-23
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of mobile terminals, the demand for flexible circuit boards in foldable mobile phones is getting higher and higher. In the prior art, the impedance of the radio frequency signal of the multilayer flexible circuit board is easily mismatched, resulting in reduced transmission loss and affecting the transmission of radio frequency signals.

Method used

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  • Flexible circuit board and mobile terminal
  • Flexible circuit board and mobile terminal
  • Flexible circuit board and mobile terminal

Examples

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Embodiment Construction

[0017] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application.

[0018] In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of tw...

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PUM

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Abstract

The invention discloses a flexible circuit board and a mobile terminal. The flexible circuit board is provided with a bending area, and comprises a first bonding layer, a substrate and a covering film. A first hollow area is formed on the first bonding layer in the bending area. The substrate is connected with the first bonding layer, the substrate comprises a dielectric layer and a conductive layer connected with the dielectric layer, and a second hollow area is formed on the conductive layer in the bending area. The covering film is connected with the substrate. Thus, due to the arrangement of the second hollow area, transmission loss caused by the fact that air and the like enter the first hollow area when the radio frequency signal is transmitted in the first hollow area can be avoided, and meanwhile, transmission loss caused by different heights of the first hollow area in the bending process can be eliminated, so that the transmission quality of the flexible circuit board is improved, and the user experience is improved.

Description

technical field [0001] The present application relates to the technical field of flexible circuit boards, in particular to a flexible circuit board and a mobile terminal. Background technique [0002] Flexible Printed Circuit (FPC), characterized by light weight, thin thickness, and good bendability, can be widely used in mobile terminals, consumer electronics, automotive electronics, industrial control, medical, aerospace and military, etc. With the development of mobile terminals, the demand for flexible circuit boards in foldable mobile phones is getting higher and higher. In the prior art, the impedance of the radio frequency signal of the multilayer flexible circuit board is easily mismatched, resulting in reduced transmission loss and affecting the transmission of radio frequency signals. Contents of the invention [0003] Embodiments of the present application provide a flexible circuit board and a mobile terminal. [0004] The flexible circuit board provided in th...

Claims

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Application Information

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IPC IPC(8): H05K1/02
CPCH05K1/0253H05K1/025H05K1/0237H05K1/028H05K1/0298
Inventor 庄毅强
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD