Loading patent…
AssigneePolytronics Technology Corp.
InventorsEdward Fu-Hua Chu, Yun-Ching Ma, David Shau-Chew Wang
Estimating the term…
A PCB comprising a substrate, at least one circuit layer and at least one insulating layer, characterized in that the PCB further comprises at least one embedded functional material such as a PTC, and NTC and ZTC material. If the PTC material is applied in the present invention, a normal resistance of the present invention will be substantially smaller than that of the conventional PTC protection apparatus since the area of the PTC material of the present invention is larger than that of the conventional PTC protection apparatus. Moreover, through an electrically conductive hole, an upper electrode and a lower electrode respectively lying on top and bottom surfaces of the functional material are respectively connected with an apparatus mounted on a surface of the PCB to form a conductive circuit. Thus, at least one over-current protection apparatus which is usually mounted on the surface of the PCB is eliminated, and the surface utilization rate of the PCB is improved.
A printed circuit board (PCB), comprising a substrate, at least one circuit layer and at least one insulating layer, characterized in that the PCB further comprises at least one embedded PTC material layer and an upper electrode and a lower electrode respectively lying on top and bottom surfaces of the at least PTC material layer, and the upper electrode and the lower electrode are electrically connected to an apparatus mounted on a surface of the PCB through an electrically conductive hole to form a conductive circuit.
A printed circuit board (PCB) comprising a substrate, at least one circuit layer and at least one insulating layer, characterized in that the PCB further comprises at least one embedded NTC material layer, an upper electrode and a lower electrode respectively lying on top and bottom surfaces of the NTC material layer and the upper electrode and the lower electrode are electrically connected to an apparatus mounted on a surface of the PCB through an electrically conductive hole for forming a conductive circuit.
A printed circuit board (PCB) comprising a substrate, at least one circuit layer and at least one insulating layer, characterized in that the PCB further comprises at least one embedded ZTC material layer, an upper electrode and a lower electrode respectively lying on top and the bottom surfaces of the ZTC material layer, and the upper electrode and the lower electrode are electrically connected to an apparatus mounted on the surface of the PCB through an electrically conductive hole for forming a conductive circuit.
Dependencies are inferred from the claim text.