Flexible capacitive touch sensor

H - Electricity – 03 – K

Patent

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Details

H03K 17/96 (2006.01) G06F 3/033 (2006.01) G08C 21/00 (2006.01)

Patent

CA 2444687

A flexible, capacitive touch sensor, and a method of manufacturing a plurality of such touch sensors, are provided. The capacitive touch sensor comprises a thin, flexible, transparent, insulating substrate. A thin, flexible, transparent layer of resistive material is applied to one side of the substrate, and a thin, flexible, transparent, pressure-sensitive layer of adhesive material is applied to the substrate's other side. A releasable sheet may cover this adhesive layer. A plurality of thin, flexible electrodes, electrical leads and conductive areas are applied to the resistive layer. A thin, flexible, transparent layer of protective material protects the touch sensor's active touch area. Compounds may be added to this protective layer to enhance its conductivity and lubricity. A reel-to-reel process for manufacturing a plurality of such capacitive touch sensors also is described.

L'invention concerne un capteur tactile capacitif flexible et un procédé de fabrication d'une pluralité de capteurs tactiles de ce type. Ce capteur tactile capacitif comporte un substrat isolant mince, flexible et transparent. Une fine couche transparente flexible de matériau résistif est appliquée sur un côté du substrat, et une fine couche autocollante, transparente, flexible de matériau adhésif est appliquée sur l'autre côté du substrat. Une feuille amovible peut recouvrir cette couche adhésive. Une pluralité d'électrodes flexibles, minces, de fils électriques et de zones conductrices sont appliqués sur la couche résistive. Une fine couche flexible, transparente, de matériau protecteur protège la zone tactile active du capteur tactile. Des composés peuvent être ajoutés à cette couche protectrice pour améliorer sa conductibilité et son pouvoir lubrifiant. L'invention concerne également un procédé de fabrication bobine à bobine d'une pluralité de capteurs tactiles capacitifs de ce type.

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