Single shot molding method for COB USB/EUSB devices with contact pad ribs
First Claim
1. An Universal-Serial-Bus (USB) device comprising:
- a printed circuit board assembly (PCBA) including;
a printed circuit board (PCB) including a peripheral edge including a front edge portion, the PCB having opposing first and second surfaces,a plurality of metal contact pads disposed on the first surface of the PCB,at least one passive component mounted on the second surface of the PCB; and
at least one integrated circuit (IC) mounted on the second surface of the PCB; and
a single-shot molded housing including a first portion formed on the first surface of the PCB and a second portion formed on the second surface of the PCB such that said at least one passive component and said at least one IC are covered by said second portion,wherein the first portion includes a plurality of elongated ribs, each said elongated rib extending between an associated pair of said plurality of metal contact pads, whereby each metal contact pad of said plurality of metal contact pads is exposed between a corresponding pair of said plurality of elongated ribs,wherein the printed circuit board (PCB) defines a plurality of openings extending between the opposing first and second surfaces and located adjacent to the front edge,wherein the plurality of metal contact pads are located between the front edge portion of the PCB and the plurality of openings, andwherein the PCBA further comprises a plurality of metal contact springs, each metal contact spring extending through a corresponding opening of said plurality of openings such that a contact portion of said each metal contact spring protrudes through said corresponding opening.
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Accused Products
Abstract
A dual-personality extended USB (EUSB) system supports both USB and EUSB memory cards using an extended 9-pin EUSB socket. Each EUSB device 101 includes a PCBA having four standard USB metal contact pads disposed on an upper side of a PCB, and several extended purpose contact springs that extend through openings defined in the PCB. A single-shot molding process is used to form both an upper housing portion on the upper PCB surface that includes ribs extending between adjacent contact pads, and a lower molded housing portion that is formed over passive components and IC dies disposed on the lower PCB surface. The passive components are mounted using SMT methods, and the IC dies are mounted using COB methods. The extended 9-pin EUSB socket includes standard USB contacts and extended use contacts that communicate with the PCBA through the standard USB metal contacts and the contact springs.
190 Citations
14 Claims
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1. An Universal-Serial-Bus (USB) device comprising:
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a printed circuit board assembly (PCBA) including; a printed circuit board (PCB) including a peripheral edge including a front edge portion, the PCB having opposing first and second surfaces, a plurality of metal contact pads disposed on the first surface of the PCB, at least one passive component mounted on the second surface of the PCB; and at least one integrated circuit (IC) mounted on the second surface of the PCB; and a single-shot molded housing including a first portion formed on the first surface of the PCB and a second portion formed on the second surface of the PCB such that said at least one passive component and said at least one IC are covered by said second portion, wherein the first portion includes a plurality of elongated ribs, each said elongated rib extending between an associated pair of said plurality of metal contact pads, whereby each metal contact pad of said plurality of metal contact pads is exposed between a corresponding pair of said plurality of elongated ribs, wherein the printed circuit board (PCB) defines a plurality of openings extending between the opposing first and second surfaces and located adjacent to the front edge, wherein the plurality of metal contact pads are located between the front edge portion of the PCB and the plurality of openings, and wherein the PCBA further comprises a plurality of metal contact springs, each metal contact spring extending through a corresponding opening of said plurality of openings such that a contact portion of said each metal contact spring protrudes through said corresponding opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An assembly comprising:
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a printed circuit board assembly (PCBA) including; a printed circuit board (PCB) including a peripheral edge including a front edge portion, the PCB having opposing first and second surfaces, a plurality of metal contact pads disposed on the first surface of the PCB, at least one passive component mounted on the second surface of the PCB; and at least one integrated circuit (IC) mounted on the second surface of the PCB; a single-shot molded housing including a first portion formed on the first surface of the PCB and a second portion formed on the second surface of the PCB such that said at least one passive component and said at least one IC are covered by said second portion, wherein the first portion includes a plurality of elongated ribs, each said elongated rib extending between an associated pair of said plurality of metal contact pads, whereby each metal contact pad of said plurality of metal contact pads is exposed between a corresponding pair of said plurality of elongated ribs; and a case fixedly connected to the EUSB device such that the fixed metal contacts are accessible through a front opening defined by said case, wherein the printed circuit board (PCB) defines a plurality of openings extending between the opposing first and second surfaces and located adjacent to the front edge, wherein the plurality of metal contact pads are located between the front edge portion of the PCB and the plurality of openings, and wherein the PCBA further comprises a plurality of metal contact springs, each metal contact spring extending through a corresponding opening of said plurality of openings such that a contact portion of said each metal contact spring protrudes through said corresponding opening of said single-shot molded housing.
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Specification