Browse Prior Art Database

Packaging Structure of LCD Module

IP.com Disclosure Number: IPCOM000110517D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 3 page(s) / 78K

Publishing Venue

IBM

Related People

Natsuyama, Y: AUTHOR [+2]

Abstract

Disclosed is a new packaging structure of LCD module which provides a smaller packaging footprint with one concentrated PCB (normally 4 PCBs are needed for the module) while maintaining replaceability of the backlight unit or other faulty units. Also this eliminates complicated soldering process which requires unique soldering machine and tools.

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Packaging Structure of LCD Module

       Disclosed is a new packaging structure of LCD module
which provides a smaller packaging footprint with one concentrated
PCB (normally 4 PCBs are needed for the module) while maintaining
replaceability of the backlight unit or other faulty units.  Also
this eliminates complicated soldering process which requires unique
soldering machine and tools.

      The new packaging structure disclosed herein is as follows.
This utilizes TAB for connector interconnection instead of
conventional soldering interconnection.

      Fig. 1 shows the structure of the TAB for this packaging.  The
spacer is adhered to the rear side of the contact leads to get stable
spring force with the connector.  By this design, conventional
FPC/FFC connector can be used to interconnect between TAB and PCB.

      Fig. 2 shows the LCD cell assembled with above TABs before
folded.  TAB is long enough to be folded with backlight rolled up.

      Fig. 3 shows the final figure of this structure.  One
concentrated PCB is placed to the rear side of the LCD cell with the
backlight unit sandwiched between them.  Then all TABs are folded 180
degrees and the contact leads are inserted to the mating connectors.

      Fig. 4 shows the normal structure with the 180-degree folded
TAB.  All TABs are soldered to the PCBs and then PCBs are
interconnected by cables to each other.  This structure needs a
complicated soldering technique; since the LCD...