Browse Prior Art Database

LIQUID CRYSTAL DISPLAY MODULE CONbjECTlON

IP.com Disclosure Number: IPCOM000007508D
Original Publication Date: 1995-Nov-01
Included in the Prior Art Database: 2002-Apr-02
Document File: 1 page(s) / 58K

Publishing Venue

Motorola

Related People

Scott J. Hanlon: AUTHOR [+2]

Abstract

FIELD OF INVENTION The potential applications for this invention relates in general to all products with electronic dis- plays requiring LCD connection to a printed circuit board. to-board leads from breaking, but failures are still prevalent.

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MOlDROLA Technical Developments

LIQUID CRYSTAL DISPLAY MODULE CONbjECTlON

by Scott J. Hanlon and Jason M. Banks

FIELD OF INVENTION

  The potential applications for this invention relates in general to all products with electronic dis- plays requiring LCD connection to a printed circuit board.

to-board leads from breaking, but failures are still prevalent.

  Therefore, in order to eliminate the broken lead failure mode, it is necessary to redesign the method ofconnection.

BACKGROUND OF THE INVENTION

  The current method of connecting an LCD mod- ule to a printed circuit board (PCB) involves the use of a heat seal and/or flex circuit in order to provide tab to board connection.

  First of all, the process for attaching the heat seal and flex circuit to a PCB involves a hot-bar operation. This in itself is an added cost to the entire LCD module connection process, and in addition, extensive tooling is required to complete the task. In addition, current tab-to-board connections are not the most reliable, failing in both accelerated life tests and in the field.

  A number of attempted solutions, such as kapton tape and other parts which would provide support have been implemented in order to protect the tab-

DESCRI~ION OF THE PREFERRED EMBODIMENT

  The desired situation involves the use ofa micro pin connection, eliminating the use of heat seals and flex circuits. The benefits of a pin connection are as follows:

1. Simplified Z-axis assembly.
2. The ability to connect an LCD modu...