Electromagnetic shielding structures for shielding components on a substrate

Abstract

Electronic components on a substrate may be shielded using electromagnetic shielding structures. Insulating materials may be used to provide structural support and to help prevent electrical shorting between conductive materials and the components. The shielding structures may include compartments formed using metal fences that surround selected components or by injection molding plastic. The shielding structures may be formed using metal foil wrapped over the components and the substrate. Electronic components may be tested using test posts or traces to identify components that are faulty. The test posts or traces may be deposited on the substrate and may be used to convey test signals between test equipment and the components. After successful testing, the test posts may be permanently shielded. Alternatively, temporary shielding structures may be used to allow testing of individual components before an electronic device is fully assembled.

Description

[0001] This application claims the benefit of US Patent Application No. 13 / 488,382, filed June 4, 2012, and US Patent Application No. 61 / 495,348, filed June 9, 2011, which are hereby incorporated by reference in their entirety. technical field [0002] The present disclosure relates generally to radio frequency interference mitigation, and more particularly to electromagnetic shielding structures that help isolate radio frequency circuits from radio frequency interference. Background technique [0003] Electronic devices such as computers, cellular phones, and other devices often contain circuits that require electromagnetic shielding. For example, some electronic equipment includes radio frequency transceiver circuitry that is susceptible to radio frequency interference. Electronic devices may also include memory and other components that use the clock signal during normal operation. If care is not taken, signals from one circuit may interfere with the normal operation of ...

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Problems solved by technology

This can limit the effectiveness of RF shielding can placement in situations such as where compact shielding is desired

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