Browse Prior Art Database

MOLDED COMPONENTS WITH 3 DIMENSIONAL CIRCUITRY FOR CHARGING/PROGRAMMING

IP.com Disclosure Number: IPCOM000007018D
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2002-Feb-18
Document File: 2 page(s) / 101K

Publishing Venue

Motorola

Related People

Allen Hertz: AUTHOR [+3]

Abstract

To meet customer demands, programmable elec- tronic devices such as pagers, two way radios, cellu- lar telephones, etc., are becoming smaller and more durable. These products require access to the cir- cuitry for testing and programming purposes. The present systems used to access the circuitry enables intrusion of foreign materials such as dust or mois- ture. Intrusion of foreign materials can cause any- thing from aesthetic or cosmetic issues to catastrophic electrical failure. A desired situation would be the ability to access circuitry and maintain a barrier from intrusion of foreign materials without complicating the assembly ofthe product.

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MOTOROLA INC. Technical Developments Volume 20 October 1993

MOLDED COMPONENTS WITH 3 DIMENSIONAL CIRCUITRY

FOR CHARGING/PROGRAMMING

by Allen Hertz, Ari Lima and David Tribbey

  To meet customer demands, programmable elec- tronic devices such as pagers, two way radios, cellu- lar telephones, etc., are becoming smaller and more durable. These products require access to the cir- cuitry for testing and programming purposes. The present systems used to access the circuitry enables intrusion of foreign materials such as dust or mois- ture. Intrusion of foreign materials can cause any- thing from aesthetic or cosmetic issues to catastrophic electrical failure. A desired situation would be the ability to access circuitry and maintain a barrier from intrusion of foreign materials without complicating the assembly ofthe product.

  A recent advance in electronic manufacturing has been the development of three dimensional or molded circuits. Utilization ofthis technology allows for the inclusion of circuitry as well as mechanical components, while simplifying the assembly of the product. Three dimensional circuitry can be applied to product designs to meet the requirements stated above.

  Two methods for accessing the circuitry without exposing the product interior are: through the product housing and through the battery compartment:

  The first proposal would be to access the cir- cuitry through the product housing (Figure 1). The housing would include deposited, preferrably plated, contact pads on the exterior with some fea...