Patent ID: 9152239
Filing Date: 2015-10-06
Classification: G06F,H01H

Abstract:
1. A keyboard safety protection device comprising: a protection layer, a metal dome, and a keyboard printed circuit board, wherein, a key gold finger and a safety processor are arranged on the keyboard printed circuit board, the protection layer is composed of a layer of polyvinylidence fluoride (PVDF) film and a first and second silver slurries, the first and second silver slurries are coated on the surface of the PVDF film, the surfaces of the first and second silver slurries are provided with a first and second thin film layers respectively, the first and second silver slurries are electrically connected with the key gold finger, and the first and second silver slurries are electrically connected with the safety processor through the keyboard printed circuit board to form a safety detection circuit, and wherein, a first contact is disposed on the first silver slurry, a second contact and a third contact are disposed on the second silver slurry, the first contact is passed through the PVDF film and electrically connected with the second contact, an isolation groove is disposed between the second silver slurry and the second contact.