Acoustic touch sensor with laminated substrate

Details Acoustic touch sensor with laminated substrate Acoustic touch sensor with laminated substrate

G - Physics

09

G

G09G 5/00 (2006.01) G06F 3/033 (2006.01)

Patent

CA 2426553

The present invention is directed to a multilayer substrate (1) for use in touchscreen and touch sensor applications. The substrate, including a microsheet(3), a polymer sheet(5), and a plate(7) supports the propagation of acoustic waves, including Love waves and Rayleigh-like waves. The microsheet(3) and plate(7) may be fabricated from glass, metal, or other suitable materials depending on the desired application for the touchscreen. The polymer sheet(5) may be fabricated from polystyrene, polyacrylates, polyether sulfones, or polycyclic olefins. The disclosed touchscreen substrates are thin but durable and have increased touch sensitivity with decreased sensitivity to water and other surface contaminants.

L'invention concerne un substrat multicouche, conçu pour des applications d'écran et de capteur tactiles. Ce substrat, comprenant une microfeuille, une feuille polymère et une plaque, supporte la propagation d'ondes acoustiques, notamment des ondes de Love et des ondes de type Rayleigh. La microfeuille et la plaque peuvent être fabriquées à partir de verre, métal ou autre matériau approprié, en fonction de l'application voulue pour l'écran tactile. La feuille polymère peut être fabriquée à partir de polystyrène, polyacrylates, polyéther sulfones ou oléfines polycycliques. Les substrats d'écran tactile décrits sont minces mais durables et possèdent une sensibilité tactile accrue, ainsi qu'une sensibilité moindre à l'eau et à d'autres contaminants de surface.

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