Multifunctional card having a static protection

• US 5,031,076 A
• Filed: 12/05/1989
• Issued: 07/09/1991
• Est. Priority Date: 12/06/1988
• Status: Expired due to Term

• Current Assignee: Berg Technology, Inc.
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Kiku, Yutaro
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): SPARKS, DONALD ALAN
• Application Number:
  US07/446,337
• Time in Patent Office: 581 Days
• Field of Search: 361/212, 361/220, 361/395, 361/216, 361/395, 361/399, 361/380, 361/424, 361/390, 361/391, 361/392, 361/394, 361/397, 174/51, 174/35 R, 364/200, 364/222, 364/400, 439/92, 439/108, 439/181, 439/186, 439/94, 439/101, 439/109
• US Class Current: 361/816
• CPC Class Codes: H05K 5/0269 Card housings therefor, e.g. covers, frames, PCB
• CPC Class Codes: H05K 9/0067 Devices for protecting against damage from electrostatic discharge

Abstract

A multifunctional card comprising a substrate having a semiconductor circuit, and a housing, made of an insulating material, for housing the substrate, wherein the housing comprises two pieces of housing halves to be fitted to contain the substrate therein, and a conductive member is arranged in the housing along a seam between the housing halves so as to surround the substrate and to be electrically connected to a ground portion of the substrate.

Claims

1. A multifunctional integrated circuit card adapted for insertion into and withdrawal from an electrical apparatus, said card comprising:

a circuit substrate having a plurality of integrated circuit chips mounted thereon,

a connector mounted along one peripheral edge of said substrate and providing means for electrically connecting the circuit substrate and said integrated circuit chips mounted thereon to an electrical apparatus.

ground pads disposed on said substrate and electrically connected to said connector.

a housing of insulative material enclosing said circuit substrate, said housing formed of a top portion and a bottom portion which join together along a peripheral seam adjacent the periphery of said circuit board, and

a U-shaped conductive member disposed within the joined top and bottom housing portions adjacent said seam, said U-shaped periphery of said circuit substrate except for a portion of said peripheral edge where said connector is mounted, each end of said U-shaped member connected to one of said ground pads.

2. The multifunctional card of claim 1 wherein said U-shaped conductive member is a metal frame.

3. The multifunctional card of claim 1 wherein said U-shaped conductive member is a metal wire.

4. The multifunctional card of claim 1 wherein said U-shaped conductive member is formed of conductive tape bonded to an inner surface of one of said housing portions.