Evaluations of Dynapro Thin Film Products: Also, the total resistance in the Y-direction between the bus bars 15, 16 is the same, without regard to the X-coordinate along bus bars 15, Electrical contact resistance has been observed to increase significantly after many cycles of operation switch closures. Similarly, upper bus bar 15 and lower bus bar 16 are connected to the decoding circuitry by thick film conductors 17 and 19 of silver particle-filled polymer. Improvement in maintaining contact resistance improves the important performance areas of product life and switch function consistency. For example, pure metal targets can be biased with a DC power supply, while semiconductors and dielectrics typically require either radio frequency or pulsed DC. The preferred form of the invention is a switch within a larger switching device of the type having a construction of relatively thin or low profile membranes, substrates and films.
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cynapro In this switch 30 a plurality of transparent conductors 31 running in the Y-direction are formed of thin film ITO material on the underside of top flex layer not shown. Specifically, it allows higher deposition rates than IBS and has access to essentially the same material set.
The analog touch screen of claim 1, wherein the layers of semiconductive ceramic consist essentially of indium tin oxide or tin oxide. Touch screen overlay with improved conductor durability. This test switch, along with a switch made from the identical film with no palladium, were actuated in an identical fashion. fiml
Dynapro Thin Film Products Inc in Milwaukee, Wisconsin – () – iBegin
The initial contact resistance of the tbin switch was less than half of the non-coated switch, which may be significant, although the switch geometry was not identical.
Also, the total resistance in the Y-direction between the bus bars 15, 16 is the same, without regard to the X-coordinate along bus bars 15, Transparent switch having fine line conductors. Therefore, sheet resistance is still controlled by the ITO layers 22, Electrical contact resistance has been observed to increase significantly after many cycles of operation switch closures.
Field of the Invention The field of the invention is electrical switches, and more particularly, transparent membraneous switches known as touch panel switches or touch screen switches. This relatively thin film probably forms islands rather than a continuous film.
3M Touch Systems
Silver may also be used, or a mixture, including an alloy of one or more of the foregoing metals, may be used. In matrix switches, the contacts on one layer are conductive strips running in an X-direction and opposing contacts on a second layer are conductive strips running in a Y-direction, so that each switch location is defined by the intersection of an X-direction conductive dynwpro and a Y-direction conductive strip.
Bus bars 15 and 16 contact layer 27, which thkn layer 22, as seen in FIG. Next Patent Knob assembly for us As shown in FIGS. Evaluations of Dynapro Thin Film Products: When the switch contacts are closed, a very small amount of localized surface deterioration takes place.
The effect is thought to result from the palladium forming islands rather than a continuous film over the switch contacts. Hoovers features company data and profiles as well as data on over 40 million Rilm were at 3 Hz with grams of force. Improvement in maintaining contact resistance improves the important performance areas of product life and switch function consistency.
In an analog resistive touch screen, the location of tnin touch is decoded by analyzing the screen as a voltage divider in the X-direction and in the Y-direction based on voltage readings in the X-direction and Y-direction, respectively, caused by a touch anywhere on the screen.
• Dynapro Thin Film Products • Milwaukee • Wisconsin •
This is a continuation of application Ser. The point of contact is represented by the vertical arrow marked V OUT. Other suitable materials for the substrate 21 include glass. Transparent touch panel switch. The analog touch screen of claim 1, wherein the conductors include two pairs of conductors connected to a top and bottom edge of one of the transparent layers and to a left and right edge of the other of the transparent layers.
The analog touch screen of claim 1, wherein the metallic film consists essentially of a metal selected from the group consisting of palladium, platinum, iridium, gold, silver, rhodium, or a mixture thereof. All this makes magnetron sputtering a good choice when film durability and stability, as well as cost, are important, but the ultimate performance in terms of precision, scatter and absorption is not required.
Voice and image teleconferencing system including paperless facsimile means.