Importance

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Abstract

An active matrix surface pressure input panel comprises a flexible magnetic sheet stacked onto a circuit plate. The circuit plate includes an insulating base plate with first and second groups of intersecting electrode lines and a multiplicity of detection elements formed thereon. Each detection element includes a magnetic sensitive element coupled to the electrode lines and configured to generate an electrical signal corresponding to the distance between the magnetic sensitive elements and respective overlying portions of the magnetic sheet. The electrode lines are coupled to an electrical circuit that determines the relative location of each electrical signal to map an overall surface pressure distribution. With this configuration, the surface pressure input panel exhibits high definition over a relatively large detection area so that complicated surfaces, such as fingerprints, can be accurately detected and reproduced.

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First Claim