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Enhanced Reliability, Zero Insertion Force LGA Socket Utilizing Directional Adhesion Disclosure Number: IPCOM000235423D
Publication Date: 2014-Feb-26
Document File: 2 page(s) / 47K

Publishing Venue

The Prior Art Database


Disclosed is an LGA connector that utilizes directional adhesion.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

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Enhanced Reliability ,


Zero Insertion Force LGA Socket Utilizing Directional Adhesion

Zero Insertion Force LGA Socket Utilizing Directional Adhesion

Geckos are arguably nature's most agile smooth surface climbers. They can run at over 1 meter/second, in any direction, over wet and dry surfaces of varying roughness and of almost any material, with only a few exceptions like graphite and Teflon*. The gecko's prowess is due to a combination of design features that work together to permit rapid, smooth locomotion. Foremost among these features is hierarchical compliance, which helps the gecko conform to rough and undulating surfaces over multiple length scales. The result of this conformability is that the gecko achieves intimate contact with surfaces so that van der Waals' forces produce sufficient adhesion for climbing. The gecko's adhesion is also directional. This characteristic allows the gecko to adhere with negligible preload in the normal direction and to detach with very little pull-off force, an effect that is enhanced by peeling the toes in "digital hyperextension." A typical LGA application functions as follows:

1) The LGA site is protected by a cover to prevent contamination and mechanical damage during processing.

2) The cover is removed and the LGA connector/module assembly is mated to the LGA site via a tool containing a series of alignment features (gross and fine alignment features in the plastic housing). There is a small hand-held tool required to pick up the LGA to help with alignment and placement of the LGA on the board.

a) One s...