Raychem Limited

Other

Tyco Electronics Corporation

Te Connectivity Corporation

Elo Touchsystems, Inc.

Barry C Mathews

James A Rinde

Miguel A Morales

Yiliang Wu

Joel Christopher Kent

Julian Sean Mullaney

John Seymour Mattis

Corey J McMills

Paul Becker

Michael Andrew Oar

Pradeep Barma

Mark W Ellsworth

Jeff Dolin

Cecilia A Walsh

Leonard Henry Radzilowski

Frank Wasilewski

John A Ross

Orion Jankowski

Robert J Ritter

Drew John Loucks

John R Hughes

Mark W Ellsowrth

Anthony B Idem

Jeffrey A Sampson

Johann D'Hondt

Hans Cordia

A method of forming a conductive trace that includes selecting a substrate, jet dispenser, and conductive ink; measuring the ink's viscosity (V); using Vto select one of criteria (i)-(iv): applying the selected criteria to the dispenser; applying the ink onto the substrate; and drying, curing, or annealing the ink to form the conductive trace having &#x2265;4B adhesion. The criteria (i)-(iv) including:

Jet dispensing electrically conductive inks

An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness R and a reflection density RD, the product R times RD being at least 0.06 &mgr;m, with an adhesion promoting layer positioned between the first surface of the metal electrode and the polymer element. The conductive polymer composition preferably exhibits PTC behavior. In other aspects, electrical devices using more than one adhesion promoting layer, and electrical devices using an adhesion promoting layer in combination with a crosslinking agent are provided. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.

Electrical devices containing conductive polymers

A sealing system for an acoustic touchscreen includes an elongate gel body between the touchscreen and the bezel of a housing onto which the touchscreen is mounted. The elongate gel body forms a seal around the perimeter of the touch-sensitive area of the touchscreen. A stop element controls and limits the amount of compression of the elongate gel body. The resulting seal is highly effective in protecting the unexposed parts of the touchscreen (i.e., areas other than the touch-sensitive area) from contaminants, especially liquid contaminants, at the cost of an acceptably low loss in acoustic signal strength.

Sealing system for acoustic wave touchscreens

A gel material is expanded by first subjecting mixture of a gel precursor material and heat-expandable microspheres to a curing regimen which cures the precursor material into a gel material without expanding the microspheres and then heating to expand the gel material containing the microspheres. In this manner, an intermediate product in the form of a gel which is more handleable than the typically syrupy precursor material is produced. This intermediate product can be manipulated and placed at the intended application location and then expanded.

Method of expanding a gel material

A touch sensor system, including a substrate, capable of propagating surface acoustic waves; and a reflective array formed on said substrate, said reflective array having a plurality of reflective elements, each reflective element reflecting a portion of an incident surface acoustic wave. The reflective array is formed of an organic matrix. The organic matrix is preferably chemically bonded to the substrate, and is preferably a thermoset resin. The resulting reflective arrays are preferably stable under changes in moisture between 0% and 60% RH at temperatures between about 0.degree.-50.degree. C. The organic matrix can also be used in a humidity or chemical sensor.

Organic matrix for acoustic reflector array

Articles including a thin laminar heating element composed of a sintered conductive polymer, and electrodes attached to the heating element so that current flows in the plane of the element. The article can be placed between and in contact with two substrates, and then heated to join the two substrates together. Preferably at least one of the substrates is polymeric and becomes melt-fused to the article.

Methods and devices which make use of conductive polymers to join

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Fremont, CA, United States of America

Barry C Mathews