Browse Prior Art Database

Planar Electrical Connector

IP.com Disclosure Number: IPCOM000050782D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 3 page(s) / 57K

Publishing Venue

IBM

Related People

Bauman, AH: AUTHOR [+2]

Abstract

Contemporary integrated circuit packages consist of multiple chip cards which are interconnected through printed circuit boards. The cards are connected to the boards by means of densely configured connector packages which require characteristics of wiping action, secure retention, zero insertion force, high connection density, dust tightness and amenability to low-cost fabrication.

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Planar Electrical Connector

Contemporary integrated circuit packages consist of multiple chip cards which are interconnected through printed circuit boards. The cards are connected to the boards by means of densely configured connector packages which require characteristics of wiping action, secure retention, zero insertion force, high connection density, dust tightness and amenability to low-cost fabrication.

An alternative to connecting the cards to the boards by perpendicularly plugging the cards into connectors, which are supported on the board, is to place the cards in a planar arrangement on the boards. Fig. 1 illustrates the basic principle of a planar connector which cards or boards in planar configurations.

The cards or boards 1 are supported by "stiffener" 2 in opposition to clamping beam 3. Stiffener 2 resists the pressure exerted by clamping beam 3 through connector elements 4. The stiffener may be an individual element for each card or board, or it may be integrated into a larger frame spanning co-planar cards or boards. The receiver 5 is used to aid in the registration of the clamping beam relative to the connector elements and also to contain the connector elements. The clamping beam includes projections 3a which register with corresponding grooves or ruts 4a in the connector elements and transmit pressure to respective connector elements during the clamping operation (Fig. 1(b)). The connector element is a shaped elastomer with imbedded wires or, alternatively, a shaped elastomer with alternate conducting and nonconductive layers.

In the released position, the connector elements have the natural shape shown in Fig. 1 (a). Men clamping action begins, these elements deform, as shown in Fig. 1 (b), rotating their contact portions or "nubs" 4b with consequent wiping action relative to pads 6 on the cards or boards 1 through which connections are being made. When clamped, the elastomer is flattened at the card or boa...