Circuit protection structure and electronic device
A circuit protection and circuit unit technology, applied in the direction of support structure installation, grounding circuit, installation board safety device, etc., can solve problems such as increasing product weight and volume, increasing product extra cost, reducing product competitive advantage, etc. The effect of unit interference, reducing circuit unit interference, and improving product competitiveness
Inactive Publication Date: 2015-08-12
XIAOMI INC
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Problems solved by technology
However, it is difficult to deal with radiated noise because it usually permeates the entire system. In the prior art, for radiated noise, the radiated noise of the system can usually be controlled by adding a shielding conductive mask, but adding a shielding conductive mask will increase the product’s safety. Weight and volume, but also increase the additional cost of the product, reducing the competitive advantage of the product
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[0029] The present disclosure will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present disclosure, and structural, method, or functional changes made by those skilled in the art based on these embodiments are all included in the protection scope of the present disclosure.
[0030] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.
[0031] It should be understood that although the terms first, second, etc. ma...
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The invention discloses a circuit protection structure, and the structure comprises a PCB (printed circuit board) which is provided with a circuit unit and a grounding line frame surrounding the circuit unit; a conductive housing which is provided with a storage cavity for storing the circuit unit; and a conductive binding layer which is disposed between the grounding line frame and the conductive housing, so as to achieve the electrical connection of the grounding line frame with the conductive housing. According to the invention, the circuit unit, which needs to be protected, forms a Faraday cage structure in a combination mode of the conductive housing, the conductive binding layer and the grounding line frame on the PCB, thereby achieving the shielding of electromagnetic radiation so as to eliminate or reduce the electromagnetic interference with the circuit unit. Meanwhile, the arrangement of a shielding conductive face cover cannot cause the increase of the weight and size, thereby improving the competitive edge of a product.
Description
technical field [0001] The present disclosure relates to the technical field of communication circuits, in particular to a circuit protection structure and an electronic device for shielding electromagnetic radiation. Background technique [0002] "Noise" in a circuit generally refers to unwanted electrical signals that distort the purity of the desired signal. There are two ways of noise transmission: conduction and radiation. The former transmits noise from one place to another through conductors, such as: a section of wire, a section of printed circuit, a metal case of equipment, a metal rack of equipment, or components in a circuit etc.; while the latter transmits noise from one place to another by means of air or other dielectric medium. Additionally, conducted noise is usually transformed into radiated noise (ie, electromagnetic radiation) when it encounters a suitable antenna. [0003] Shielding, filtering, ground wire design, and overall layout are several effectiv...
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IPC IPC(8): H05K9/00
CPCH05K9/0032H05K9/0024H04M1/0277H05K7/1417H05K9/0064
Inventor 杨大伟李晖朱丹许春利
Owner XIAOMI INC