| 摘要 |
<p>The invention is suitable for the safety protection field of electronic devices and provides a keyboard safety protection device for protecting a point of sale (POS) device keyboard area from being attacked. The keyboard safety protection device comprises a protection layer, a metal dome, and a keyboard printed circuit board (PCB), wherein a key goldfinger and a safety processor are arranged on the keyboard PCB, the protection layer is composed of a layer of polyvinylidene fluoride (PVDF) film and a first and a second silver slurries, the first and the second slurries are coated on the surface of the PVDF film, the surfaces of the first and the second silver slurries are provided with a first and a second thin film layers respectively, the first and the second silver slurries are electrically connected with the key goldfinger, and the first and the second silver slurries are electrically connected with the safety processor to form a safety detection circuit through the keyboard PCB. According to the keyboard safety protection device, the problem that sensitive data information of an electronic circuit is stolen can be solved, and the keyboard safety protection device is comprehensive in protection and long in service life.</p> |
