Patent ID: 7391006

Claim:
A fingerprint scanning device comprising: a contact image sensing module for capturing a fingerprint image, said contact image sensing module including a main circuit board, said main circuit board being a composite circuit board, said composite circuit board including a first rigid printed circuit board, a second rigid printed circuit board, a third rigid printed circuit board and at least a flexible printed circuit board, said first, second and third rigid printed circuit boards being electrically connected to said flexible printed circuit board to respectively form a first composite substrate, a second composite substrate and a third composite substrate; a signal conversion controller electrically connected to said contact image sensing module and used to convert said analog fingerprint image to a digital signal; a module controller electrically connected to said contact image sensing module and said signal conversion controller and used to control said contact image sensing module and said signal conversion controller; and an interface controller electrically connected to said signal conversion controller and said module controller and used to control the transmission of said digital signal to a controller in an electronic device.