Method for restraining electromagnetic radiation of coating conducting membrane on screw

An electromagnetic wave and film technology, applied in the field of electromagnetic wave radiation suppression, can solve the problems of DDR strobe interference that cannot be effectively suppressed, the definition of layer space is narrow, and not suitable, so as to improve the problem of electromagnetic radiation, and the suppression effect is obvious. The effect of increasing efficiency

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An electromagnetic wave and film technology, applied in the field of electromagnetic wave radiation suppression, can solve the problems of DDR strobe interference that cannot be effectively suppressed, the definition of layer space is narrow, and not suitable, so as to improve the problem of electromagnetic radiation, and the suppression effect is obvious. The effect of increasing efficiency

CN101754665AInactive Publication Date: 2010-06-23MSI ELECTRONICS KUN SHAN

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[0025] In order to further explain the technical means and effects that the present invention takes to achieve the intended invention purpose, below in conjunction with the accompanying drawings and preferred embodiments, the method for suppressing electromagnetic radiation based on the screw coated with a conduction film proposed by the present invention is specifically implemented. Ways, methods, steps, features and effects thereof are described in detail below.

[0026] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings. Through the description of the specific implementation mode, a more in-depth and specific understanding of the technical means and effects adopted by the present invention to achieve the intended purpose can be obtained. However, the accompanying drawings are only for reference and description...

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Abstract

The invention relates to a method for restraining the electromagnetic radiation of coating conducting membrane on a screw. The method adopts the step of connecting the screw on a printed circuit board by adopting the coating conducting membrane, so as to directly improve the grounding efficiency of the printed circuit board and realize the restraint to electromagnetic radiation. Accordingly, the method can effectively reduce the Data strobe electromagnetic radiation of a DDR memory, and effectively restrain the electric wave harmful to human body and brought by EMC.

Description

technical field [0001] The invention relates to a method for suppressing electromagnetic wave radiation, in particular to a method for suppressing electromagnetic wave radiation in which a conduction film is coated on a screw. Background technique [0002] The electromagnetic interference of the digital filter (Data strobe) of the double-speed (Double Data Rate, DDR) memory on the printed circuit board is a very common and difficult problem. During the Electromagnetic Compatibility (EMC) test, due to the high speed of the DDR memory The transmission of frequent signals produces strong electromagnetic wave radiation in the high-frequency region near 1GHz. Especially in the era of Vista, the requirements for the speed and capacity of DDR memory are higher, which also highlights the seriousness of this problem. Now the problem of shielding DDR strobe radiation is nothing more than adjusting the capacitance value around the relevant memory and paying attention to the layout of ...

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Application Information

Patent Timeline

23 Jun 2010

Publication

CN101754665A

IPC: H05K9/00; G06F1/18

Inventors: 何志刚