Memory card production using prefabricated cover and molded casing portion
First Claim
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1. A method for fabricating a memory card, the method comprising:
- forming a cover defining a plurality of windows and a printed circuit board assembly (PCBA) including a printed circuit board (PCB) substrate having opposing first and second surfaces and opposing front and back edges, wherein the PCBA also includes a plurality of contact pads mounted on the second surface and arranged along the front edge of the PCB substrate;
forming a sub-assembly by mounting the PCBA onto the cover such that at least one contact pad of the plurality of contact pads is exposed through an associated window of the plurality of windows; and
injecting molten plastic onto at least one of the first surface and the second surface of the PCBA such that the molten plastic secures the PCBA to the cover.
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Abstract
Secure-digital (SD) type memory cards are produced using one or more prefabricated cover portions and a molded casing portion. A sub-assembly is formed by mounting a printed circuit board assembly (PCBA) onto the cover portion such that the contact pads of the PCBA are exposed through associated windows defined in the cover. The sub-assembly is placed into a cavity formed in a mold assembly, and molten thermoplastic material is then injected into each cavity of the mold assembly under heat and pressure using known injection molding techniques, thereby forming a molded plastic casing portion that secures the PCBA to the cover and completes the memory card housing.
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Citations
16 Claims
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1. A method for fabricating a memory card, the method comprising:
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forming a cover defining a plurality of windows and a printed circuit board assembly (PCBA) including a printed circuit board (PCB) substrate having opposing first and second surfaces and opposing front and back edges, wherein the PCBA also includes a plurality of contact pads mounted on the second surface and arranged along the front edge of the PCB substrate; forming a sub-assembly by mounting the PCBA onto the cover such that at least one contact pad of the plurality of contact pads is exposed through an associated window of the plurality of windows; and injecting molten plastic onto at least one of the first surface and the second surface of the PCBA such that the molten plastic secures the PCBA to the cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification